MIC5213 Datasheet by Microchip Technology

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August 2004 1 MIC5213
MIC5213 Micrel
General Description
The MIC5213 is a µCap 80mA linear voltage regulator in the
Teeny™ SC-70 package. Featuring half the footprint of the
standard SOT-23 package, this Teeny™ SC-70 regulator
has very low dropout voltage (typically 20mV at light loads
and 300mV at 80mA) and very low ground current (225µA at
20mA output). It also offers better than 3% initial accuracy
and includes a logic-compatible enable input.
The µCap regulator design is optimized to work with low-
value, low-cost ceramic capacitors. The outputs typically
require only 0.47µF of output capacitance for stability.
Designed especially for hand-held, battery-powered devices,
the MIC5213 can be controlled by a CMOS or TTL compatible
logic signal. When disabled, power consumption drops nearly
to zero. If on-off control is not required, the enable pin may be
tied to the input for 3-terminal operation. The ground current
of the MIC5213 increases only slightly in dropout, further
prolonging battery life. Key MIC5213 features include current
limiting, overtemperature shutdown, and protection against
reversed battery.
The MIC5213 is available in 2.5V, 2.6V, 2.7V, 2.8V, 3.0V,
3.3V, 3.6V, and 5.0V fixed voltages. Other voltages are
available; contact Micrel for details.
Typical Applications
15
2
34
0.47µF
V
OUT
Enable
Shutdown
LAx
Regulator Circuit
Ordering Information
Part Number Marking Voltage Junction Temp. Range Package
Standard Pb-Free Standard Pb-Free
MIC5213-2.5BC5 MIC5213-2.5YC5 LAM LAM 2.5V 40°C to +125°C SC-70-5
MIC5213-2.6BC5 MIC5213-2.6YC5 LAQ LAQ 2.6V 40°C to +125°C SC-70-5
MIC5213-2.7BC5 MIC5213-2.7YC5 LAL LAL 2.7V 40°C to +125°C SC-70-5
MIC5213-2.8BC5 MIC5213-2.8YC5 LAJ LAJ 2.8V 40°C to +125°C SC-70-5
MIC5213-3.0BC5 MIC5213-3.0YC5 LAG LAG 3.0V 40°C to +125°C SC-70-5
MIC5213-3.3BC5 MIC5213-3.3YC5 LAE LAE 3.3V 40°C to +125°C SC-70-5
MIC5213-3.6BC5 MIC5213-3.6YC5 LAD LAD 3.6V 40°C to +125°C SC-70-5
MIC5213-5.0BC5 MIC5213-5.0YC5 LAB LAB 5.0V 40°C to +125°C SC-70-5
Other voltages available. Contact Micrel for details.
Features
Teeny SC-70 package
Wide selection of output voltages
Guaranteed 80mA output
Low quiescent current
Low dropout voltage
Tight load and line regulation
Low temperature coefficient
Current and thermal limiting
Reversed input polarity protection
Zero off-mode current
Logic-controlled shutdown
Stability with low ESR ceramic capacitors
Applications
Cellular telephones
Laptop, notebook, and palmtop computers
Battery-powered equipment
Bar code scanners
SMPS post-regulator/dc-to-dc modules
High-efficiency linear power supplies
MIC5213
Teeny™ SC-70 µCap Low-Dropout Regulator
Final Information
Teeny is a trademark of Micrel, Inc.
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000• http://www.micrel.com
MIC5213 2 August 2004
MIC5213 Micrel
Absolute Maximum Ratings (Note 1)
Input Supply Voltage (VIN) ............................ 20V to +20V
Enable Input Voltage (VEN) ........................... 20V to +20V
Power Dissipation (PD) ............................ Internally Limited
Storage Temperature Range (TS) ............ 60°C to +150°C
Lead Temperature (Soldering, 5 sec.) ...................... 260°C
ESD, Note 3
Operating Ratings (Note 2)
Input Voltage (VIN) ........................................... 2.5V to 16V
Enable Input Voltage (VEN) .................................. 0V to VIN
Junction Temperature Range................... 40°C to +125°C
Thermal Resistance JA)......................................... Note 4
Pin Configuration
EN
INOUT
GND
LAx
13
45
2
NC
SC-70-5 (C5)
Pin Description
Pin Number Pin Name Pin Function
1 EN Enable (Input): TTL/CMOS compatible control input. Logic high = enabled;
logic low or open = shutdown.
2 NC Not internally connected.
3 GND Ground
4 OUT Regulator Output
5 IN Supply Input
August 2004 3 MIC5213
MIC5213 Micrel
Electrical Characteristics
VIN = VOUT + 1V; IL = 1mA; CL = 0.47µF; VEN 2.0V; TJ = 25°C, bold values indicate 40°C TJ +125°C; unless noted.
Symbol Parameter Conditions Min Typ Max Units
VOOutput Voltage Accuracy 33%
44%
VO/T Output Voltage Temp. Coefficient Note 5 50 200 ppm/°C
VO/VOLine Regulation VIN = VOUT + 1V to 16V 0.008 0.3 %
0.5 %
VO/VOLoad Regulation IL = 0.1mA to 80mA, Note 6 0.08 0.3 %
0.5 %
VINVODropout Voltage, Note 7 IL = 100µA20mV
IL = 20mA 200 350 mV
IL = 50mA 250 mV
IL = 80mA 280 600 mV
IQQuiescent Current VEN 0.4V (shutdown) 0.01 10 µA
IGND Ground Pin Current, Note 8 IL = 100µA, VEN 2.0V (active) 180 µA
IL = 20mA, VEN 2.0V (active) 225 750 µA
IL = 50mA, VEN 2.0V (active) 850 µA
IL = 80mA, VEN 2.0V (active) 1800 3000 µA
IGNDDO Ground Pin Current in Dropout VIN = VOUT(nominal) 0.5V, Note 8 200 300 µA
ILIMIT Current Limit VOUT = 0V 180 250 mA
VO/PDThermal Regulation Note 9 0.05 %/W
Enable Input
VIL Enable Input Voltage Level Logic Low (off) 0.6 V
VIH Logic High (on) 2.0 V
IIL Enable Input Current VIL 0.6V 0.01 1 µA
IIH VIH 2.0V 8 50 µA
Note 1. Exceeding the absolute maximum rating may damage the device.
Note 2. The device is not guaranteed to function outside its operating rating.
Note 3. Devices are ESD sensitive. Handling precautions recommended.
Note 4. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(max), the junction-to-ambient thermal
resistance, θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using:
PD(max) = (TJ(max) TA) ÷ θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator
will go into thermal shutdown. θJA of the SC-70-5 is 450°C/W, mounted on a PC board.
Note 5. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
Note 6. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in output voltage due to heating effects
are covered by the thermal regulation specification.
Note 7. Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1V
differential.
Note 8. Ground pin current is the regulator quiescent current plus pass transistor base current. The total current drawn from the supply is the sum of
the load current plus the ground pin current.
Note 9. Thermal regulation is defined as the change in output voltage at a time t after a change in power dissipation is applied, excluding load or line
regulation effects. Specifications are for an 80mA load pulse at VIN = 16V for t = 10ms.
MIC5213 4 August 2004
MIC5213 Micrel
1
10
100
1000
0.01 0.1 1 10 100
DROPOUT VOLTAGE (mV)
OUTPUT CURRENT (mA)
Dropout Voltage
vs. Output Current
CIN = 10µF
COUT = 1µF
0
100
200
300
400
-60 -30 0 30 60 90 120 150
DROPOUT VOLTAGE (mV)
TEMPERATURE (°C)
Dropout Voltage
vs. Temperature
C
IN
= 10µF
C
OUT
= 1µF
I
L
= 100µA
I
L
= 1mA
I
L
= 80mA
0
1
2
3
4
01234567
OUTPUT VOLTAGE (V)
SUPPLY VOLTAGE (V)
Dropout
Characteristics
I
L
= 80mA
I
L
= 100µA
C
IN
= 10µF
C
OUT
= 1µF
0
500
1000
1500
2000
0 1020304050607080
GROUND CURRENT (µA)
OUTPUT CURRENT (mA)
Ground Current
vs. Output Current
VIN = VOUT + 1V
0.0
0.5
1.0
1.5
2.0
01234567
GROUND CURRENT (mA)
SUPPLY VOLTAGE (V)
Ground Current
vs. Supply Voltage
I
L
= 50mA
I
L
= 100µAV
OUT
= 3.3V
0.0
0.5
1.0
1.5
2.0
2.5
3.0
-60 -30 0 30 60 90 120 150
GROUND CURRENT (mA)
TEMPERATURE (°C)
Ground Current
vs. Temperature
I
L
= 50mA
I
L
= 100µA
C
IN
= 10µF
C
OUT
= 1µF
I
L
= 80mA
Typical Characteristics
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0 50 100 150 200
OUTPUT VOLTAGE (V)
OUTPUT CURRENT (mA)
C
IN
= 10µF
C
OUT
= 1µF
Output Voltage
vs. Output Current
0
20
40
60
80
100
120
140
160
01234567
SHORT CIRCUIT CURRENT (mA)
INPUT VOLTAGE (V)
Short Circuit Current
vs. Input Voltage
CIN = 10µF
COUT = 1µF
-60
-40
-20
0
20
40
60
OUTPUT (mV)
-50
0
50
100
-2 0246810121416
LOAD (mA)
TIME (ms)
Thermal Regulation
(3.3V Version)
CL = 1µF
2.4
2.6
2.8
3.0
3.2
3.4
3.6
3.8
4.0
-60 -30 0 30 60 90 120 150
OUTPUT VOLTAGE (V)
TEMPERATURE (°C)
Output Voltage
vs. Temperature
C
IN
= 10µF
C
OUT
= 1µF
CURVES APPLICABLE
AT 100µA AND 50mA
3 DEVICES
HI / AVG / LO
100
120
140
160
180
200
-60 -30 0 30 60 90 120 150
OUTPUT CURRENT (mA)
TEMPERATURE (°C)
Short Circuit Current
vs. Temperature
CIN = 10µF
COUT = 1µF
3.3
3.4
3.5
-60 -30 0 30 60 90 120 150
MIN. SUPPLY VOLTAGE (V)
TEMPERATURE (°C)
Minimum Supply Voltage
vs. Temperature
IL = 1mA
VOUT = 3.3V
CIN = 10µF
COUT = 1µF
August 2004 5 MIC5213
MIC5213 Micrel
OUTPUT (mV)
-50
0
50
100
-1 012345678
OUTPUT (mA)
TIME (ms)
Load Transient
C
OUT
= 1µF
V
IN
= V
OUT
+ 1
0
40
-40
-50
0
50
100
-5 0 5 10 15 20
OUTPUT (mA)
TIME (ms)
-200
-100
0
100
OUTPUT (mV)
Load Transient
C
OUT
= 10µF
V
IN
= V
OUT
+ 1
-2
-1
0
1
2
3
OUTPUT (V)
2
4
6
8
-0.2 0.0 0.2 0.4 0.6 0.8 1.0
INPUT (V)
TIME (ms)
Line Transient
C
L
= 1µF
I
L
= 1mA
-1
0
1
2
OUTPUT (V)
2
4
6
8
-0.2 0.0 0.2 0.4 0.6 0.8 1.0
INPUT (V)
TIME (ms)
Line Transient
CL = 11µF
IL = 1mA
0
20
40
60
80
100
10x10
0
100x10
0
1x10
3
10x10
3
100x10
3
1x10
6
RIPPLE VOLTAGE (dB)
FREQUENCY (Hz)
Ripple Voltage
vs. Frequency
I
L
= 1mA
C
L
= 1µF
V
IN
= V
OUT
+ 1
0
20
40
60
80
100
10x10
0
100x10
0
1x10
3
10x10
3
100x10
3
1x10
6
RIPPLE VOLTAGE (dB)
FREQUENCY (Hz)
Ripple Voltage
vs. Frequency
I
L
= 50mA
C
L
= 1µF
V
IN
= V
OUT
+ 1
0
20
40
60
80
100
10x10
0
100x10
0
1x10
3
10x10
3
100x10
3
1x10
6
RIPPLE VOLTAGE (dB)
FREQUENCY (Hz)
Ripple Voltage
vs. Frequency
I
L
= 100µA
C
L
= 1µF
V
IN
= V
OUT
+ 1
MIC5213 6 August 2004
MIC5213 Micrel
0.01
0.1
1
10
100
1000
1x10
0
10x10
0
100x10
0
1x10
3
10x10
3
100x10
3
1x10
6
OUTPUT IMPEDANCE ()
FREQUENCY (Hz)
Output Impedance
I
L
= 100µA
I
L
= 1mA
I
L
= 100mA
-1
0
1
2
3
4
5
OUTPUT (V)
-2
0
2
4
-0.2 0.0 0.2 0.4 0.6 0.8 1.0
ENABLE (V)
TIME (ms)
Enable Characteristics
(3.3V Version)
C
L
= 1µF
I
L
= 100µA
-1.0
0.0
1.0
2.0
3.0
4.0
OUTPUT (V)
-2
0
2
4
-2 0246810
ENABLE (V)
TIME (µs)
Enable Characteristics
(3.3V Version)
C
L
= 1µF
I
L
= 100µA
0.50
0.75
1.00
1.25
1.50
-60 -30 0 30 60 90 120 150
ENABLE VOLTAGE (mV)
TEMPERATURE (°C)
Enable Voltage
vs. Temperature
C
IN
= 10µF
C
OUT
= 1µF
I
L
= 1mA
V
ON
V
OFF
0
10
20
30
40
-60 -30 0 30 60 90 120 150
ENABLE CURRENT (µA)
TEMPERATURE (°C)
Enable Current
vs. Temperature
CIN = 10µF
COUT = 1µF
IL = 1mA
VEN = 5V
VEN = 2V
n:
August 2004 7 MIC5213
MIC5213 Micrel
Applications Information
Input Capacitor
A 0.1µF capacitor should be placed from IN to GND if there
is more than 10 inches of wire between the input and the ac
filter capacitor or when a battery is used as the input.
Output Capacitor
Typical PNP-based regulators require an output capacitor to
prevent oscillation. The MIC5213 is ultrastable, requiring only
0.47µF of output capacitance for stability. The regulator is
stable with all types of capacitors, including the tiny, low-ESR
ceramic chip capacitors. The output capacitor value can be
increased without limit to improve transient response.
No-Load Stability
The MIC5213 will remain stable and in regulation with no load
(other than the internal voltage divider) unlike many other
voltage regulators. This is especially important in CMOS
RAM keep-alive applications.
Enable Input
The MIC5213 features nearly zero off-mode current. When
EN (enable input) is held below 0.6V, all internal circuitry is
powered off. Pulling EN high (over 2.0V) re-enables the
device and allows operation. When EN is held low, the
regulator typically draws only 10nA of current. While the logic
threshold is TTL/CMOS compatible, EN may be pulled as
high as 20V, independent of VIN.
Thermal Behavior
The MIC5213 is designed to provide 80mA of continuous
current in a very small profile package. Maximum power
dissipation can be calculated based on the output current and
the voltage drop across the part. To determine the maximum
power dissipation of the package, use the junction-to-ambi-
ent thermal resistance of the device and the following basic
equation:
PTT
D(max) J(max) A
JA
=
θ
TJ(max) is the maximum junction temperature of the die,
125°C, and TA is the maximum ambient temperature. θJA is
the junction-to-ambient thermal resistance ambient of the
regulator. The θJA of the MIC5213 is 450°C/W.
The actual power dissipation of the regulator circuit can be
determined using one simple equation.
PD = (VIN VOUT) IOUT + VIN × IGND
Substituting PD(max), determined above, for PD and solving
for the operating conditions that are critical to the application
will give the maximum operating conditions for the regulator
circuit. For example, if we are operating the MIC5213-3.0BC5
at room temperature, with a minimum footprint layout, we can
determine the maximum input voltage for a set output current.
P125 25
450 C / W
D(max)
=
°
P 222mW
D(max) =
To prevent the device from entering thermal shutdown,
maximum power dissipation cannot be exceeded. Using the
output voltage of 3.0V, and an output current of 80mA, we can
determine the maximum input voltage. Ground current, maxi-
mum of 3mA for 80mA of output current, can be taken from
the Electrical Characteristics section of the data sheet.
222mW = (VIN 3.0V) 80mA + VIN × 3mA
222mW = (80mA × VIN + 3mA × VIN) 240mW
462mW = 83mA × VIN
VIN = 5.57V max.
Therefore, a 3.0V application at 80mA of output current can
accept a maximum input voltage of 5.6V in an SC-70-5
package. For a full discussion of heat sinking and thermal
effects on voltage regulators, refer to Regulator Thermals
section of Micrels
Designing with Low-Dropout Voltage Regu-
lators
handbook.
Fixed Voltage Regulator
The MIC5213 is ideal for general-purpose voltage regulation
in any handheld device. Applications that are tight for space
can easily use the Teeny SC-70 regulator which occupies
half the space of a SOT-23-5 regulator. The MIC5203 offers
a smaller system solution, only requiring a small multilayer
ceramic capacitor for stability.
MIC5213-x.x
IN OUT
GND 0.47µF
V
OUT
3.0V
3.6V
Li-Ion
Cell
EN
Figure 1. Single-Cell Regulator
flfifi U‘tl,
MIC5213 8 August 2004
MIC5213 Micrel
Package Information
0.30 (0.012)
0.10 (0.004)
2.20 (0.087)
1.80 (0.071)
2.40 (0.094)
1.80 (0.071)
1.35 (0.053)
1.15 (0.045)
0.65 (0.0256) BSC
1.00 (0.039)
0.80 (0.032)
0.10 (0.004)
0.00 (0.000)
DIMENSIONS:
MM (INCH)
0.30 (0.012)
0.15 (0.006)
0.18 (0.007)
0.10 (0.004)
1.10 (0.043)
0.80 (0.032)
SC-70-5 (C5)
MICREL, INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or
other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel, Inc.
© 2004 Micrel, Incorporated

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