MICREL MIC5236-3.3BMM, MIC5236-5.0BM, MIC5236-5.0BMM, MIC5236-3.0BMM, MIC5236-3.0BM Datasheet

MIC5236 Micrel

C

OUT

V

OUT

3.0V/150mA

V

IN

5V

V

ERR

IN

MIC5236

EN

47k

OUT

GND

ERR

MIC5236

Low Quiescent Current µCap LDO Regulator

Preliminary Information

General Description

The MIC5236 is a low quiescent current, µCap low-dropout
regulator. With a maximum operating input voltage of 30V
and a quiescent current of 20µA, it is ideal for supplying keep­alive power in systems with high-voltage batteries.

Capable of 150mA output, the MIC5236 has a dropout
voltage of only 300mV. It can also survive an input transient
of –20V to +60V.

As a µCap LDO, the MIC5236 is stable with either a ceramic
or a tantalum output capacitor. It only requires a 1.0µF output
capacitor for stability.

The MIC5236 includes a logic compatible enable input and an
undervoltage error flag indicator. Other features of the
MIC5236 include thermal shutdown, current-limit, overvolt­age shutdown, load-dump protection, reverse leakage pro­tections, and reverse battery protection.

Available in the thermally enhanced SOP-8 and MSOP-8, the
MIC5236 comes in fixed 2.5V, 3.0V, 3.3V, 5.0V, and adjust­able voltages. For other output voltages, contact Micrel.

Features

• Ultra-low quiescent current (IQ = 20µA @IO = 100µA)

• Wide input range: 2.3V to 30V

• Low dropout:

230mV @50mA;
300mV @150mA

• Fixed 2.5V, 3.0V, 3.3V, 5.0V, and Adjustable outputs

• ±1.0% initial output accuracy

• Stable with ceramic or tantalum output capacitor

• Load dump protection: –20V to +60V input transient

survivability

• Logic compatible enable input

• Low output flag indicator

• Overcurrent protection

• Thermal shutdown

• Reverse-leakage protection

• Reverse-battery protection

• High-power SOP-8 and MSOP-8

Applications

• Keep-alive supply in notebook and
portable personal computers

• Logic supply from high-voltage batteries

• Automotive electronics

• Battery-powered systems

Typical Application

V

30V

IN

MIC5236

IN

EN

GND

OUT

ERR

Regulator with Low IO and Low I

November 2000 1 MIC5236

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

V

5V

IN

V

OUT

3.0V/100µA
I

= 20µA

GND

Q

MIC5236

IN

EN

OUT

ADJ

GND

Regulator with Adjustable Output

Regulator with Error Output

V

OUT

3.0V/150mA

MIC5236 Micrel

Ordering Information

Part Number * Voltage Junction Temp. Range Package

MIC5236-5.0BM 5.0V –40°C to +125°C 8-lead SOIC
MIC5236-5.0BMM 5.0V –40°C to +125°C 8-lead MSOP
MIC5236-3.3BM 3.3V –40°C to +125°C 8-lead SOIC
MIC5236-3.3BMM 3.3V –40°C to +125°C 8-lead MSOP
MIC5236-3.0BM 3.0V –40°C to +125°C 8-lead SOIC
MIC5236-3.0BMM 3.0V –40°C to +125°C 8-lead MSOP
MIC5236-2.5BM 2.5V –40°C to +125°C 8-lead SOIC
MIC5236-2.5BMM 2.5V –40°C to +125°C 8-lead MSOP
MIC5236BM ADJ –40°C to +125°C 8-lead SOIC
MIC5236BMM ADJ –40°C to +125°C 8-lead MSOP

*Conta5ct factory regarding availablity for voltages not listed

Pin Configuration

ERR

IN

OUT

EN

1
2
3
4

8-Pin SOIC (M)

8-Pin MSOP (MM)

8 GND

GND

7

GND

6

GND

5

ADJ

IN

OUT

EN

1
2
3
4

8-Pin SOIC (M)

8-Pin MSOP (MM)

Pin Description

Pin Number Pin Number Pin Name Pin Function

1 /ERR Error (Output): Open-collector output is active low when the output is out of

regulation due to insufficient input voltage or excessive load. An external

pull-up resistor is required.
1 ADJ Adjustable Feedback Input. Connect to voltage divider network.
2 2 IN Power supply input.
3 3 OUT Regulated Output
4 4 EN Enable (Input): Logic low = shutdown; logic high = enabled.

5–85–8 GND Ground: Pins 5, 6, 7, and 8 are internally connected in common via the

leadframe.

8 GND

GND

7

GND

6

GND

5

MIC5236 2 November 2000

MIC5236 Micrel

Absolute Maximum Ratings (Note 1)

Supply Voltage (V
Power Dissipation (P
Junction Temperature (T

Storage Temperature (TS) ....................... –65°C to +150°C

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

), Note 3 ........................ –20V to +60V

IN

), Note 4 ............... Internally Limited

D

) ......................................+150°C

J

Operating Ratings (Note 2)

Supply Voltage (V
Junction Temperature (T
Package Thermal Resistance

MSOP (θ

JA

SOIC (θJA)...........................................................63°C/W

) ................................... + 2.3V to +30V

IN

) .......................–40°C to +125°C

J

) .........................................................80°C/W

ESD Rating, Note 5

Electrical Characteristics

VIN = 6.0V; VEN = 2.0V; C

Symbol Parameter Conditions Min Typ Max Units

V

OUT

/∆T Output Voltage Note 6 50 ppm/°C

∆V

OUT

∆V

OUT/VOUT

∆V

OUT/VOUT

Output Voltage Accuracy variation from nominal V

Temperature Coefficient
Line Regulation VIN = V

Load Regulation I

∆V Dropout Voltage, Note 8 I

I

GND

I

GND(SHDN)

I

SC

e

n

Ground Pin Current VEN ≥ 2.0V, I

Ground Pin in Shutdown VEN ≤ 0.6V, V
Short Circuit Current V
Output Noise 10Hz to 100kHz, V

/ERR Output

V

/ERR

Low Threshold % of V
High Threshold % of V

V

OL

I

LEAK

/ERR Output Low Voltage VIN = V

/ERR Output Leakage VOH = 30V 0.1 1 µA

Enable Input

V

IL

V

IH

Input Low Voltage regulator off 0.6 V
Input High Voltage regulator on 2.0 V

= 4.7µF, I

OUT

= 100µA; TJ = 25°C, bold values indicate –40°C ≤ TJ ≤ +125°C; unless noted.

OUT

OUT

+ 1V to 30V 0.2 0.5 %

OUT

= 100µA to 50mA, Note 7 0.15 0.3 %

OUT

I

= 100µA to 150mA, Note 7 0.3 0.6 %

OUT

= 100µA50100 mV

OUT

I

= 50mA 230 400 mV

OUT

I

= 100mA 270 mV

OUT

I

= 150mA 300 500 mV

OUT

= 100µA2030 µA

OUT

VEN ≥ 2.0V, I
VEN ≥ 2.0V, I
V

≥ 2.0V, I

EN

= 0V 260 350 mA

OUT

OUT
OUT

OUT(nom)

= 50mA 0.5 0.8 mA

OUT

= 100mA 1.5 mA

OUT

= 150mA 2.8 4.0 mA

OUT

= 30V 0.1 1 µA

IN

= 3.0V, CL = 1.0µF 160 µVrms

OUT

– 0.12V

, IOL = 200µA 150 250 mV

OUT

–11%

–2+2%

90 94 %

1.0 %

0.5 %

1.0 %

5.0 mA

95 98 %

400 mV

2 µA

November 2000 3 MIC5236

MIC5236 Micrel

Symbol Parameter Conditions Min Typ Max Units

I

IN

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: The absolute maximum positive supply voltage (60V) must be of limited duration (≤100ms) and duty cycle (≤1%). The maximum continuous

Note 4: The maximum allowable power dissipation of any T

Note 5. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
Note 6: Output voltage temperature coefficient is defined as the worst-case voltage change divided by the total temperature range.
Note 7: Regulation is measured at constant junction temperature using pulse testing with a low duty-cycle. Changes in output voltage due to heating

Note 8: Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at 1.0V

Enable Input Current VEN = 0.6V, regulator off 0.01 1.0 µA

2.0 µA

V

= 2.0V, regulator on 0.15 1.0 µA

EN

2.0 µA

V

= 30V, regulator on 0.5 2.5 µA

EN

supply voltage is 30V.

(ambient temperature) is P
allowable power dissipation will result in excessive die termperature, and the regulator will go into thermal shutdown. The θ
MIC5236-x.xBM (all versions) is 63°C/W, and the MIC5236-x.xBMM (all versions) is 80°C/W, mounted on a PC board (see “Thermal Charac­teristics” for further details).

effects are covered by the specification for thermal regulation.

differential.

A

D(max)

= (T

– TA) ÷ θJA. Exceeding the maximum

J(max)

5.0 µA

of the

JA

MIC5236 4 November 2000