MAX4789-94 Datasheet by Analog Devices Inc./Maxim Integrated

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MAX4789—MAX4794 200mAI250 mA/300mA Current-Limit Switches uh ‘Fwfi n75 w? M maxim Integrated ,,
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General Description
The MAX4789–MAX4794 family of switches feature inter-
nal current limiting to prevent damage to host devices due
to faulty load conditions. These analog switches have a
low 0.2 on-resistance and operate from 2.3V to 5.5V
input voltage range. They are available with guaranteed
200mA, 250mA, and 300mA current limits, making them
ideal for SDIO and other load switching applications.
When the switch is on and a load is connected to the
port, a guaranteed blanking time of 14ms ensures that
the transient voltages settle down. If after this blanking
time the load current is greater than the current limit, the
MAX4789, MAX4791, and MAX4793 enter a latch-off
state where the switch is turned off and FLAG is issued to
the microprocessor. The switch can be turned on again by
cycling the power or the ON pin.
The MAX4790, MAX4792, and MAX4794 have an
autoretry feature where the switch turns off after the
blanking time and then continuously checks to see if the
overload condition is present. The switch remains on
after the overload condition disappears.
The MAX4789–MAX4794 are available in 6-pin 3mm x
3mm TDFN and tiny space-saving 4-pin SOT143 pack-
ages. The MAX4789/MAX4790/MAX4791/MAX4793 are
also available in a tiny 5-pin SOT23 package. For lower
current current-limiting switches, refer to the MAX4785–
MAX4788 data sheet.
Applications
PDAs and Palmtop Devices
Cell Phones
GPS Systems
Handheld Devices
SDIO
Features
Guaranteed Current Limit: 200mA, 250mA, 300mA
Thermal-Shutdown Protection
Reverse Current Protection
0.2 On-Resistance
14ms Guaranteed Blanking Time
FLAG Function (MAX4789/MAX4791/MAX4793)
80µA Supply Current
8µA Latch-Off Current
(MAX4789/MAX4791/MAX4793)
0.01µA Shutdown Current
2.3V to 5.5V Supply Range
Undervoltage Lockout
Fast Current-Limit Response Time (5µs)
TDFN and SOT23/SOT143 Packages
2.3V TO 5.5V
IN
OUT
FLAG
GND
ON
µP
TO SDIO PORT
MAX4789
MAX4791
MAX4793
MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches
19-2663; Rev 4; 5/19
Typical Operating Circuit
Ordering Information and Selector Guide appear at end of
data sheet.
IN, ON, FLAG, OUT to GND ...................................-0.3V to +6V
OUT Short Circuit to GND ................................Internally Limited
Continuous Power Dissipation (TA = +70°C)
4-Pin SOT143 (derate 4.0mW/°C above +70°C) ........320mW
5-Pin SOT23 (derate 7.1mW/°C above +70°C) ..........571mW
6-Pin TDFN (derate 24.4mW/°C above +70°C) .....1951.2mW
Operating Temperature Range ........................... -40°C to +85°C
Junction Temperature ...................................................... +150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PACKAGE TYPE: 4 SOT143
Package Code U4-2
Outline Number 21-0052
PACKAGE TYPE: 5 SOT23
Package Code U5-2
Outline Number
21-0057
PACKAGE TYPE: 6 TDFN
Package Code T633-2
Outline Number
21-0137
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2
MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Absolute Maximum Ratings
Package Information
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
Note 1: All parts are 100% tested at +25°C. Limits across the full temperature range are guaranteed by design and correlation.
Note 2: Latch-off current does not include the current flowing into FLAG.
Note 3: The on time is defined as the time taken for the current through the switch to go from 0mA to full load. The off-time is
defined as the time taken for the current through the switch to go from full load to 0mA.
Note 4: Retry time is typically 7 times the blanking time.
(VIN = 2.3V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VIN = 3.3V, TA = +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Voltage VIN 2.3 5.5 V
Quiescent Current IQVON = VIN, IOUT = 0,
switch on
VIN = +2.3V to +5.0V 80 120 µA
VIN = +5.0V to +5.5V 160
Latch-Off Current (Note 2) ILATCH
VON = VIN, after an overcurrent fault
(MAX4789/MAX4791/MAX4793) 8 15 µA
Shutdown Current ISHDN VON = 0V 0.01 1 µA
Forward Current Limit
MAX4789/MAX4790 200 300
mA
MAX4791/MAX4792 250 375
MAX4793/MAX4794 300 450
Reverse Current Limit
MAX4789/MAX4790 300
mAMAX4791/MAX4792 375
MAX4793/MAX4794 450
Shutdown Reverse Leakage VON = 0, VIN = 3V, VOUT = 5V 100 µA
ON Input Leakage VON = VIN or GND -1 +1 µA
Off Switch Leakage VON = 0V, VOUT = 0V 0.01 1 µA
Undervoltage Lockout UVLO Rising edge 1.8 2.2 V
Undervoltage Lockout Hysteresis 100 mV
On-Resistance RON
TA = +25°C, IOUT = 100mA 0.2 0.4
TA = -40°C to +85°C, IOUT = 100mA 0.5
ON Input Logic High Voltage VIH 2.0 V
ON Input Logic Low Voltage VIL 0.8 V
FLAG Output Logic Low Voltage ISINK = 1mA (MAX4789/MAX4791/MAX4793) 0.4 V
FLAG Output High Leakage
Current
VIN = V FLAG = 5.5V (MAX4789/MAX4791/
MAX4793) 1 µA
Thermal Shutdown 150 °C
Thermal-Shutdown Hysteresis 15 °C
DYNAMIC
Turn-On Time (Note 3) VON from low to high; IOUT = 10mA,
CL = 0.1µF 100 μs
Turn-Off Time (Note 3) VON from high to low; IOUT = 10mA,
CL = 0.1µF 40 ns
Blanking Time tBLANK Overcurrent fault (Figures 2, 3) 14 60 ms
Short-Circuit Current-Limit
Response Time
VON = VIN = 3.3V, short circuit applied to
OUT 5μs
Retry Time (Note 4) tRETRY MAX4790/MAX4792/MAX4794 (Figure 2) 98 420 ms
Maxim Integrated
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MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches
Electrical Characteristics
(VIN = 3.3V, TA = +25°C, unless otherwise noted.)
LATCH-OFF LEAKAGE CURRENT
vs. TEMPERATURE
MAX4789 toc06
TEMPERATURE (°C)
LATCH-OFF LEAKAGE CURRENT (nA)
603510-15
0.001
0.01
0.1
1
10
100
0.0001
-40 85
VIN = 5V
VIN = 3.3V
10
-40 85
1
0.1
0.01
0.001
0.0001
SHUTDOWN LEAKAGE CURRENT
vs. TEMPERATURE
MAX4789 toc05
TEMPERATURE (°C)
SHUTDOWN LEAKAGE CURRENT (nA)
603510-15
VIN = 5V
VIN = 3.3V
100
10
0.001
-40 85
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
0.01
0.1
1
MAX4789 toc04
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT (nA)
603510-15
VIN = 5V
VIN = 3.3V
LATCH-OFF CURRENT
vs. TEMPERATURE
MAX4789 toc03
TEMPERATURE (°C)
LATCH-OFF (µA)
603510-15
1
2
3
4
5
6
7
8
9
10
11
12
13
15
14
0
-40 85
VON = VIN
VIN = 5V
VIN = 3.3V
SUPPLY CURRENT
vs. TEMPERATURE
MAX4789 toc02
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
603510-15
20
40
60
80
100
120
0
-40 85
VON = VIN
VIN = 5V
VIN = 3.3V
QUIESCENT SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX4789 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (µA)
5.55.04.0 4.53.0 3.52.5
10
20
30
40
50
60
70
80
90
100
0
2.0
VON = VIN
Maxim Integrated
4
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MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches
Typical Operating Characteristics
(VIN = 3.3V, TA = +25°C, unless otherwise noted.)
CURRENT-LIMIT RESPONSE
MAX4789 toc12
20µs/div
VIN = VON
1V/div
IOUT
100mA/div
VIN = VON
CIN = 1µF
COUT = 1µF
CURRENT-LIMIT RESPONSE
MAX4789 toc11
40µs/div
VIN
2V/div
VON
2V/div
IOUT
100mA/div
VIN = 3.3V
CIN = 1µF
COUT = 1µF
FLAG-BLANKING TIMEOUT
vs. TEMPERATURE
MAX4789 toc10
TEMPERATURE (°C)
FLAG-BLANKING TIME (ms)
603510-15
25
30
35
40
45
50
20
-40 85
SWITCH TURN-ON/OFF TIMES
vs. TEMPERATURE
MAX4789 toc09
TEMPERATURE (°C)
TURN-ON/OFF TIMES (
µs)
603510-15
0.01
0.1
1
10
100
1000
0.001
-40 85
ILOAD = 10mA
OFF
ON
VIN = 3.3V VIN = 5V
OUTPUT CURRENT
vs. OUTPUT VOLTAGE
MAX4789 toc08
VIN - VOUT (V)
OUTPUT CURRENT (mA)
3.02.72.1 2.40.6 0.9 1.2 1.5 1.80.3
50
100
150
200
250
300
350
400
450
500
0
0 3.3
MAX4793/MAX4794
MAX4789/MAX4790
MAX4791/MAX4792
NORMALIZED ON-RESISTANCE
vs. TEMPERATURE
MAX4789 toc07
TEMPERATURE (°C)
NORMALIZED RON
603510-15
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
-40 85
VIN = 5V
Maxim Integrated
5
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MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches
Typical Operating Characteristics (continued)
(VIN = 3.3V, TA = +25°C, unless otherwise noted.)
FLAG-BLANKING RESPONSE
MAX4789 toc16
4ms/div
FLAG
2V/div
IOUT
100mA/div
VIN
2V/div
VON
2V/div
SWITCH TURN-OFF TIME RESPONSE
MAX4789 toc15
200ns/div
VON
2V/div
IOUT
10mA/div
SWITCH TURN-ON TIME RESPONSE
MAX4789 toc14
100µs/div
VON
1V/div
IOUT
10mA/div
CURRENT-LIMIT RESPONSE
(OUT SHORTED TO GND)
MAX4789 toc13
40µs/div
VIN
2V/div
VOUT
2V/div
IOUT
5A/div
CIN = 1µF
COUT = 1µF
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MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches
Typical Operating Characteristics (continued)
WWI—V
PIN
NAME FUNCTION
TDFN-EP
MAX4789
MAX4791
MAX4793
TDFN-EP
MAX4790
MAX4792
MAX4794
5-SOT23
MAX4789
MAX4791
MAX4793
4-SOT143
MAX4789–
MAX4794
1 4 FLAG
Fault Output. This open-drain output goes low when the device stays in
forward or reverse current limit for more than the blanking time period.
FLAG is high impedance when a fault is not present or when ON is low.
2 2 2 2 GND Ground
3 3 3 3 ON Active-High Switch On Input. A logic high turns the switch on.
4 1, 4 N.C. No Connection. Not internally connected.
5 5 1 4 IN Input. Bypass IN with a 0.1µF ceramic capacitor to ground.
6 6 5 1 OUT Switch Output. Bypass OUT with a 0.1µF ceramic capacitor to ground.
— EP
Exposed paddle. Connect EP to a large ground plane to maximize
thermal performance. EP is not intended as an electrical connection
point. (TDFN Package only.)
GND
FLAG
Pin Configurations continued at end of data sheet.
1 5 OUTIN
MAX4789
MAX4791
MAX4793
SOT23
TOP VIEW
2
3 4ON ON
1 4 INOUT
MAX4789–
MAX4794
SOT143
2 3GND
GND
N.C.
1 OUT
*EP = EXPOSED PAD. CONNECT EP TO GND.
*( ) FOR THE MAX4790, MAX4792, AND MAX4794.
IN
FLAG (N.C.)
MAX4789–
MAX4794
3mm x 3mm TDFN
TOP VIEW
2
3
6
5
4ON *EP
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MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches
Pin Description
Pin Configurations
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Detailed Description
The MAX4789–MAX4794 are forward/reverse current-lim-
ited switches that operate from a 2.3V to 5.5V input volt-
age range and guarantee a 200mA, 250mA, and 300mA
minimum current-limit threshold for different options. The
voltage drop across an internal sense resistor is com-
pared to two reference voltages to indicate a forward or
reverse current-limit fault. When the load current exceeds
the preset current limit for greater than the fault-blanking
time, the switch opens.
The MAX4790, MAX4792, and MAX4794 have an autore-
try function that turns on the switch again after an internal
retry time expires. If the faulty load condition is still pres-
ent after the blanking time, the switch turns off again and
the cycle is repeated. If the faulty load condition is not
present, the switch remains on.
The MAX4789, MAX4791, and MAX4793 do not have the
autoretry option and the switch remains in latch-off mode
until the ON pin or the input power is cycled from high to
low and then high again.
The undervoltage lockout (UVLO) circuit prevents errone-
ous switch operation when the input voltage goes too low
during startup conditions.
Reverse Current Protection
The MAX4789–MAX4794 limit the reverse current (VOUT
to VIN) from exceeding the maximum IREV value. The
switch is shut off and FLAG is asserted (MAX4789/
MAX4791/MAX4793) if the reverse current-limit condition
persists for more than the blanking time. This feature
prevents excessive reverse currents from flowing through
the device.
Switch-On/Off Control
Toggle ON high to enable the current-limited switches.
The switches are continuously on, only if VIN exceeds
the UVLO threshold (typically 2V) and there is no fault.
When a forward/reverse current fault is present or the die
exceeds the thermal-shutdown temperature of +150°C,
OUT is internally disconnected from IN and the supply
current decreases to 8µA (latch off). The switch is now
operating in one of its off states. The switch-off state also
occurs when driving ON low, thus reducing the supply
current (shutdown) to 0.01µA. Table 1 illustrates the
ON/OFF state of the MAX4789–MAX4794 current-limit
switches.
FLAG Indicator
The MAX4789, MAX4791, and MAX4793 feature a
latched fault output, FLAG. Whenever a fault is activat-
ed, it latches FLAG output low and also turns the switch
Figure 1. Functional Diagram
N
BLANKING TIME
CIRCUITRY
REVERSE CURRENT
DETECTOR
FORWARD CURRENT
DETECTOR
N
+2.0V
FLAG
OUT
IN
ON
GND
MAX4789/MAX4791/
MAX4793 ONLY
LOGIC
AUTO-
RETRY
MAX4789–MAX4794
UNDERVOLTAGE
LOCKOUT
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MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches
F‘gure 2, MAX4790/MAX4792/MAX4794 Auloretry Faun
off. FLAG is an open-drain output transistor and requires
an external pullup resistor from FLAG to IN. During
shutdown (ON is low), the pulldown on FLAG output is
released in order to limit power dissipation. FLAG goes
low when any of the following conditions occur:
The die temperature exceeds the thermal-shutdown
temperature limit of +150°C.
The device is in current limit for more than the
fault-blanking period.
VIN is below UVLO threshold.
Autoretry (MAX4790/MAX4792/MAX4794)
When the forward or reverse current-limit threshold is
exceeded, tBLANK timer begins counting (Figure 2). The
timer resets if the overcurrent condition disappears before
tBLANK has elapsed. A retry time delay, tRETRY, is started
immediately after tBLANK has elapsed and during that
time, the switch is latched off. At the end of tRETRY, the
switch is turned on again. If the fault still exists, the cycle
is repeated. If the fault has been removed, the switch
stays on.
The autoretry feature saves system power in the case
of an overcurrent or short-circuit condition. During
tBLANK, when the switch is on, the supply current is
at the current limit. During tRETRY, when the switch
is off, the current through the switch is zero. Instead
of observing the full load current, the switch sees the
equivalent load current times duty cycle or ISUPPLY
= ILOAD 5 tBLANK/(tBLANK + tRETRY). With a typical
tBLANK = 37ms and typical tRETRY = 259ms, the duty
cycle is 12%, which results in an 88% power savings
over the switch being on the entire time. The duty cycle
is consistent across the process and devices.
Latch Off (MAX4789/MAX4791/MAX4793)
When the forward or reverse current-limit threshold is
exceeded, tBLANK timer begins counting. The timer
resets if the overcurrent condition disappears before
tBLANK has elapsed. The switch is shut off if the over-
current condition continues up to the end of the blank-
ON FAULT SWITCH ON/OFF SUPPLY CURRENT MODE
Low X OFF Shutdown
High Undervoltage Lockout OFF Shutdown
High Thermal OFF immediately (tBLANK period does not apply) Latch off
High Current Limit
OFF after tBLANK period has elapsed Latch off
ON during tBLANK period, OFF during tRETRY period for the
MAX4790, MAX4792, and MAX4794; cycle repeats until fault
is removed
See the Autoretry section
ing time. Reset the switch by either toggling ON (Figure 3a)
or cycling the input voltage below UVLO, typically 2V
(Figure 3b).
Fault Blanking
The MAX4789–MAX4794 feature 14ms (min) fault blank-
ing. Fault blanking allows current-limit faults, includ-
ing momentary short-circuit faults that occur when hot
swapping a capacitive load, and also ensures that no
fault is issued during power-up. When a load transient
causes the device to enter current limit, an internal
counter starts. If the load-transient fault persists beyond
the fault-blanking timeout, the MAX4789/MAX4791/
MAX4793 FLAG asserts low. Load-transient faults less
than tBLANK do not cause a FLAG output assertion. Only
current-limit faults are blanked.
A thermal fault and input voltage drops below the UVLO
threshold cause FLAG to assert immediately and do not
wait for the blanking time.
Thermal Shutdown
The MAX4789–MAX4794 have a thermal shutdown fea-
ture to protect the devices from overheating. The switch
turns off and FLAG goes low immediately (no fault blank-
ing) when the junction temperature exceeds +150°C. The
switch turns back on when the device temperature drops
approximately 15°C.
Figure 2. MAX4790/MAX4792/MAX4794 Autoretry Fault
Blanking Diagram
Table 1. MAX4789–MAX4794 Switch Truth Table
LOAD
CURRENT
SWITCH
STATUS
tBLANK
OFF
ON
tRETRY
CURRENT
LIMIT
SHORT
CONDITION
REMOVED
tBLANK tBLANK
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9
MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches
the MAX4789–MAX4794 from tripping erroneously. If the
load capacitance is too large, then current may not have
enough time to charge the capacitance and the device
assumes that there is a faulty load condition. The maxi-
mum capacitive load value that can be driven from OUT
is obtained by the following formula:
FWD_MIN BLANK_MIN
MAX
IN
I t
CV
×
<
Layout and Thermal Dissipation
To optimize the switch response time to output short-cir-
cuit conditions, it is very important to keep all traces as
short as possible to reduce the effect of undesirable
parasitic inductance. Place input and output capacitors
as close as possible to the device (no more than 5mm).
IN and OUT pins must be connected with short traces to
the power bus.
During normal operation, the power dissipation is small
and the package temperature change is minimal. If the
output is continuously shorted to ground at the maximum
supply voltage, the operation of the switches with the
autoretry option does not cause problems because the
total power dissipated during the short is scaled by the
duty cycle:
IN_MAX OUT_MAX BLANK
MAX
V I t
P 302mW
t t
××
= =
+
where VIN = 5.5V, IOUT = 450mA, tBLANK = 14ms, and
tRETRY = 98ms.
Attention must be given to the MAX4789, MAX4791, and
MAX4793 where the latch-off condition must be manually
reset by toggling ON from high to low. If the latch-off time
duration is not sufficiently high, it is possible for the device
to reach the thermal-shutdown threshold and never be
able to turn the device on until it cools down.
Applications Information
Input Capacitor
To limit the input voltage drop during momentary output
short-circuit conditions, connect a capacitor from IN to
GND. A 0.1µF ceramic capacitor is adequate for most
applications; however, higher capacitor values further
reduce the voltage drop at the input and are recommend-
ed for lower voltage applications.
Output Capacitance
Connect a 0.1µF capacitor from OUT to GND. This
capacitor helps prevent inductive parasitics from
pulling OUT negative during turn-off, thus preventing
Figure 3. MAX4789/MAX4791/MAX4793 Latch-Off Fault
Blanking
LOAD
CURRENT
SWITCH
STATUS
ON PIN
VOLTAGE
tBLANK tBLANK
OFF
ON
(a)
(b)
UVLO
LOAD
CURRENT
SWITCH
STATUS
IN PIN
VOLTAGE
OFF
ON
tBLANK tBLANK
FLAG PIN
STATUS
FLAG PIN
STATUS
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MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches
Chip Information
PROCESS: BiCMOS
*EP = Exposed paddle.
/V denotes an automotive qualified part.
denotes a part Not Recommended for New Designs
+Denotes a lead-free/RoHS-compliant package.
PART PIN-
PACKAGE
CURRENT
LIMIT (mA)
FLAG
FUNCTION
AUTO-
RETRY
MAX4789 4 SOT143 200 No No
MAX4789 5 SOT23 200 Yes No
MAX4789 6 TDFN 200 Yes No
MAX4790 4 SOT143 200 No Yes
MAX4790 6 TDFN 200 No Yes
MAX4790 5 SOT23 200 No Yes
MAX4791 4 SOT143 250 No No
MAX4791 5 SOT23 250 Yes No
MAX4791 6 TDFN 250 Yes No
MAX4792 4 SOT143 250 No Yes
MAX4792 6 TDFN 250 No Yes
MAX4793 4 SOT143 300 No No
MAX4793 5 SOT23 300 Yes No
MAX4793 6 TDFN 300 Yes No
MAX4794 4 SOT143 300 No Yes
MAX4794 6 TDFN 300 No Yes
PART TEMP RANGE PIN-
PACKAGE
TOP
MARK
MAX4789EUS+T -40°C to +85°C 4 SOT143 KAFE
MAX4789EUK+T -40°C to +85°C 5 SOT23 AEAC
MAX4789ETT+ -40°C to +85°C 6 TDFN-EP* ABO
MAX4790EUS+T -40°C to +85°C 4 SOT143 KAFF
MAX4790ETT+ -40°C to +85°C 6 TDFN-EP ABP
MAX4791EUS+T -40°C to +85°C 4 SOT143 KAFG
MAX4791EUK+T -40°C to +85°C 5 SOT23 AEAE
MAX4791EUK/V+T-40°C to +85°C 5 SOT23-5 AFGJ
MAX4791ETT+ -40°C to +85°C 6 TDFN-EP* ABQ
MAX4792EUS+T -40°C to +85°C 4 SOT143 KAFH
MAX4792ETT+ -40°C to +85°C 6 TDFN-EP* ABR
MAX4793EUS+T -40°C to +85°C 4 SOT143 KAFI
MAX4793EUK+T -40°C to +85°C 5 SOT23 AEAG
MAX4793ETT+ -40°C to +85°C 6 TDFN-EP* ABS
MAX4794EUS+T -40°C to +85°C 4 SOT143 KAFJ
MAX4794ETT+ -40°C to +85°C 6 TDFN-EP* ABT
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11
MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches
Selector Guide Ordering Information
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
2 2/05 Changed package description
3 10/08 Changed Ordering Information and Package Information. 1, 8–11
4 5/19 Updated MAX4791EUK/V+T as Not Recommended for New Designs 9
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2019 Maxim Integrated Products, Inc.
12
MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches
Revision History
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IC SW CURRENT LIMIT 200MA SOT23-
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ANALOG CIRCUIT, 1 FUNC, BICMOS,
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Unit Price: 0