Datasheet MIC5213 Datasheet (MICREL)

MIC5213 Micrel

MIC5213

Teeny™ SC-70 µCap Low-Dropout Regulator

Advance Information

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 low­value, 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, 2.8V, 3.0V, 3.3V, and 3.6V
fixed voltages. Other voltages are 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

Typical Applications

Ordering Information

Part Number Marking Voltage Junction Temp. Range Package

MIC5213-2.5BC5 LAM 2.5V –40°C to +125°C SC-70-5
MIC5213-2.8BC5 LAJ 2.8V –40°C to +125°C SC-70-5
MIC5213-3.0BC5 LAG 3.0V –40°C to +125°C SC-70-5
MIC5213-3.3BC5 LAE 3.3V –40°C to +125°C SC-70-5
MIC5213-3.6BC5 LAD 3.6V –40°C to +125°C SC-70-5

Other voltages available. Contact Micrel for details.

Enable

Shutdown

15

LAx

2
34

Regulator Circuit

V

OUT

0.47µF

Teeny is a trademark of Micrel, Inc.

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 [phone] • fax + 1 [phone] • http://www.micrel.com

June 2000 1 MIC5213

MIC5213 Micrel

Pin Configuration

Pin Description

Pin Number Pin Name Pin Function

1 EN Enable (Input): TTL/CMOS compatible control input. Logic high = enabled;

2 NC not internally connected
3 GND Ground
4 OUT Regulator Output
5 IN Supply Input

NC

2

EN

13

GND

LAx

45

INOUT

SC-70-5 (C5)

logic low or open = shutdown.

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

Operating Ratings (Note 2)

Input Voltage (VIN) ........................................... 2.5V to 16V

Enable Input Voltage (VEN) .................................. 0V to V

Junction Temperature Range...................–40°C to +125°C

Thermal Resistance (θJA)......................................... Note 4

IN

Lead Temperature (Soldering, 5 sec.) ...................... 260°C

ESD, Note 3

MIC5213 2 June 2000

MIC5213 Micrel

Electrical Characteristics

VIN = V

Symbol Parameter Conditions Min Typ Max Units

V

O

∆VO/∆T Output Voltage Temp. Coefficient Note 5 50 200 ppm/°C
∆V

O/VO

∆V

O/VO

VIN–V

I

Q

I

GND

I

GNDDO

I

LIMIT

∆VO/∆P

Enable Input

V

IL

V

IH

I

IL

I

IH

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, T

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

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

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

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

+ 1V; IL = 1mA; CL = 0.47µF; V

OUT

≥ 2.0V; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C; unless noted.

EN

Output Voltage Accuracy –33%

–44%

Line Regulation VIN = V

+ 1V to 16V 0.008 0.3 %

OUT

0.5 %

Load Regulation IL = 0.1mA to 80mA, Note 6 0.08 0.3 %

0.5 %

O

Dropout Voltage, Note 7 IL = 100µA20mV

IL = 20mA 200 350 mV
IL = 50mA 250 mV

IL = 80mA 300 600 mV
Quiescent Current VEN ≤ 0.4V (shutdown) 0.01 10 µA
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
Ground Pin Current at Dropout VIN = V
Current Limit V

D

Thermal Regulation Note 9 0.05 %/W

OUT(nominal)

= 0V 180 250 mA

OUT

– 0.5V, Note 8 200 300 µA

Enable Input Voltage Level logic Low (off) 0.6 V

logic high (on) 2.0 V
Enable Input Current VIL ≤ 0.6V 0.01 1 µA

VIH ≥ 2.0V 15 50 µA

, the junction-to-ambient thermal
resistance, θJA, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperature is calculated using:
P

= (T

D(max)

will go into thermal shutdown. θJA of the SC-70-5 is 450°C/W, mounted on a PC board.

are covered by the thermal regulation specification.

differential.

the load current plus the ground pin current.

regulation effects. Specifications are for an 80mA load pulse at VIN = 16V for t = 10ms.

– TA) ÷ θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator

J(max)

J(max)

June 2000 3 MIC5213

MIC5213 Micrel

Typical Characteristics

Dropout Voltage

1000

DROPOUT VOLTAGE (mV)

vs. Output Current

CIN = 10µF
C

= 1µF

OUT

100

10

1

0.01 0.1 1 10 100

OUTPUT CURRENT (mA)

Ground Current

2000

1500

1000

GROUND CURRENT (µA)

vs. Output Current

500

VIN = V

0

0 1020304050607080

OUTPUT CURRENT (mA)

OUT

+ 1V

Dropout Voltage

400

300

200

100

DROPOUT VOLTAGE (mV)

vs. Temperature

CIN = 10µF
C

= 1µF

OUT

IL = 80mA

IL = 1mA

0

-60 -30 0 30 60 90 120 150

TEMPERATURE (°C)

IL = 100µA

Ground Current

vs. Supply Voltage

2.0

1.5
IL = 100µA

1.0

0.5

GROUND CURRENT (mA)

0.0

01234567

IL = 50mA

V

= 3.3V

OUT

SUPPLY VOLTAGE (V)

Dropout

Characteristics

4

IL = 100µA

3

2

1

OUTPUT VOLTAGE (V)

0

01234567

IL = 80mA

CIN = 10µF
C

= 1µF

OUT

SUPPLY VOLTAGE (V)

Ground Current

3.0

2.5

2.0

1.5

1.0

0.5

GROUND CURRENT (mA)

0.0

vs. Temperature

CIN = 10µF
C

= 1µF

OUT

-60 -30 0 30 60 90 120 150

TEMPERATURE (°C)

IL = 80mA

IL = 50mA

IL = 100µA

Output Voltage

vs. Output Current

4.0

3.5

3.0

2.5

CIN = 10µF
C

2.0

1.5

1.0

OUTPUT VOLTAGE (V)

0.5

0.0

= 1µF

OUT

0 50 100 150 200

OUTPUT CURRENT (mA)

Output Voltage

4.0

3.8

3.6

3.4

3.2

3.0

2.8

OUTPUT VOLTAGE (V)

2.6

2.4

vs. Temperature

CIN = 10µF
C

= 1µF

OUT

3 DEVICES

HI / AVG / LO

CURVES APPLICABLE

AT 100µA AND 50mA

-60 -30 0 30 60 90 120 150

TEMPERATURE (°C)

Short Circuit Current

160
140
120
100

SHORT CIRCUIT CURRENT (mA)

vs. Input Voltage

80
60
40
20

0

01234567

INPUT VOLTAGE (V)

CIN = 10µF
C

= 1µF

OUT

Short Circuit Current

200

180

160

140

120

OUTPUT CURRENT (mA)

100

vs. Temperature

CIN = 10µF
C

= 1µF

OUT

-60 -30 0 30 60 90 120 150

TEMPERATURE (°C)

Thermal Regulation

60
40
20

-20

-40

∆ OUTPUT (mV)

-60

100

50

LOAD (mA)

-50

(3.3V Version)

0

0

CL = 1µF

-2 0 2 4 6 8 10 12 14 16

TIME (ms)

Minimum Supply Voltage

3.5

3.4

MIN. SUPPLY VOLTAGE (V)

3.3

vs. Temperature

IL = 1mA

V

= 3.3V

OUT

CIN = 10µF
C

= 1µF

OUT

-60 -30 0 30 60 90 120 150

TEMPERATURE (°C)

MIC5213 4 June 2000

MIC5213 Micrel

-400

-200

0

200

∆ OUTPUT (mV)

-50

0

50

100

-1 012345678

OUTPUT (mA)

TIME (ms)

-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)

0

20

40

60

80

100

10x10

0

100x10

0

1x10

3

10x10

3

100x10

3

1x10

6

RIPPLE VOLTAGE (dB)

FREQUENCY (Hz)

Load Transient

C

= 1µF

OUT

V

= V

IN

Line Transient

CL = 1µF
I

= 1mA

L

OUT

+ 1

100

Load Transient

0

C

= 10µF

-100

∆ OUTPUT (mV)

100

-200

OUT

V

= V

IN

OUT

50

0

OUTPUT (mA)

-50

-5 0 5 10 15 20

2

1

TIME (ms)

Line Transient

CL = 11µF
I

= 1mA

L

0

∆ OUTPUT (V)

8

-1

6

4

INPUT (V)

2

-0.2 0.0 0.2 0.4 0.6 0.8 1.0

TIME (ms)

+ 1

100

80

60

40

20

RIPPLE VOLTAGE (dB)

0

0

10x10

June 2000 5 MIC5213

Ripple Voltage

vs. Frequency

IL = 100µA
C

= 1µF

L

V

= V

+ 1

IN

OUT

0

3

1x10

100x10

FREQUENCY (Hz)

3

10x10

3

100x10

6

1x10

Ripple Voltage

vs. Frequency

IL = 1mA
C

= 1µF

L

V

= V

+ 1

IN

OUT

Ripple Voltage

0

IL = 50mA
C
V

0

10x10

vs. Frequency

= 1µF

L

= V

+ 1

IN

OUT

0

3

1x10

100x10

FREQUENCY (Hz)

100

80

60

40

20

RIPPLE VOLTAGE (dB)

3

10x10

3

100x10

6

1x10

MIC5213 Micrel

1000

100

0.1

OUTPUT IMPEDANCE (Ω)

0.01

Output Impedance

IL = 100µA

10

IL = 1mA

1

0

0

1x10

10x10

FREQUENCY (Hz)

0

100x10

IL = 100mA

3

3

1x10

10x10

3

100x10

6

1x10

Enable Characteristics

(3.3V Version)

5
4
3
2
1
0

OUTPUT (V)

4

-1

CL = 1µF
I

= 100µA

L

2

0

ENABLE (V)

-2

-0.2 0.0 0.2 0.4 0.6 0.8 1.0

TIME (ms)

Enable Voltage

1.50

1.25

1.00

0.75

ENABLE VOLTAGE (mV)

0.50

vs. Temperature

CIN = 10µF
C

= 1µF

OUT

I

= 1mA

L

V

OFF

ON

V

-60 -30 0 30 60 90 120 150

TEMPERATURE (°C)

Enable Characteristics

4.0

3.0

2.0

1.0

0.0

OUTPUT (V)

-1.0

ENABLE (V)

(3.3V Version)

CL = 1µF
I

= 100µA

4

2

0

-2

-2 0246810

L

TIME (µs)

Enable Current

vs. Temperature

40

30

20

10

ENABLE CURRENT (µA)

0

-60 -30 0 30 60 90 120 150

TEMPERATURE (°C)

VEN = 2V

CIN = 10µF
C

= 1µF

OUT

I

= 1mA

L

VEN = 5V

MIC5213 6 June 2000

MIC5213 Micrel

P

125 25

450 C/W

D(max)

=

−

°

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 packages. 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-ambi­ent thermal resistance of the device and the following basic
equation:

TT

T

J(max)

P

=

D(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.

−

J(max) A

θ

JA

The actual power dissipation of the regulator circuit can be
determined using one simple equation.

= (VIN – V

P

D

Substituting P

D(max)

) I

OUT

+ VIN × I

GND

OUT

, 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.

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, maxi­mum 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 × V

IN

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 Micrel’s

lators

handbook.

Designing with Low-Dropout Voltage Regu-

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.

V

OUT

3.0V

0.47µF

3.6V

Li-Ion

Cell

MIC5213-x.x

IN OUT
EN

GND

Figure 1. Single-Cell Regulator

June 2000 7 MIC5213

MIC5213 Micrel

Package Information

0.65 (0.0256) BSC

2.20 (0.087)

1.80 (0.071)

0.30 (0.012)

0.15 (0.006)

1.35 (0.053)

1.15 (0.045)

1.00 (0.039)

0.80 (0.032)

0.10 (0.004)

0.00 (0.000)

SC-70-5 (C5)

2.40 (0.094)

1.80 (0.071)

1.10 (0.043)

0.80 (0.032)

DIMENSIONS:

MM (INCH)

0.18 (0.007)

0.10 (0.004)

0.30 (0.012)

0.10 (0.004)

MICREL INC. 1849 FORTUNE DRIVE SAN JOSE, CA 95131 USA

TEL + 1 [phone] FAX + 1 [phone] 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.

© 2000 Micrel Incorporated

MIC5213 8 June 2000