MICREL MIC5213 Datasheet

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

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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

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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)

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