MIC5233BM5 Micrel Semiconductor, MIC5233BM5 Datasheet

MIC5233BM5

Manufacturer Part Number

MIC5233BM5

Description

Manufacturer

Micrel Semiconductor

Datasheet

1.MIC5233BM5.pdf (9 pages)

Specifications of MIC5233BM5

0210

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

MIC5233BM5

Manufacturer:

MICREL

Quantity:

4 322

Current page: 1 of 9
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General Description

The MIC5233 is a 100mA highly accurate, low dropout

regulator with high input voltage and ultra-low ground current.

This combination of high voltage and low ground current

makes the MIC5233 ideal for multi-cell Li-Ion battery

systems.

A µCap LDO design, the MIC5233 is stable with either

ceramic or tantalum output capacitor. It only requires a 2.2µF

capacitor for stability.

Features of the MIC5233 include enable input, thermal shut-

down, current limit, reverse battery protection, and

reverse leakage protection.

Available in fixed and adjustable output voltage versions, the

MIC5233 is offered in the IttyBitty™ SOT-23-5 package with

a junction temperature range of –40°C to +125°C.

Typical Application

IttyBitty is a trademark of Micrel, Inc.

February 2005

MIC5233

Ordering Information

Part Number

MIC5233-1.8BM5

MIC5233-2.5BM5

MIC5233-3.0BM5

MIC5233-3.3BM5

MIC5233-5.0BM5

MIC5233BM5

Ultra-Low Current Adjustable Regulator Application

Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

=1.0µF

Standard

OFF ON

MIC5233BM5

Marking

L3AA

L318

L325

L330

L333

L350

ceramic

GND

Part Number

MIC5233-1.8YM5

MIC5233-2.5YM5

MIC5233-3.0YM5

MIC5233-3.3YM5

MIC5233-5.0YM5

MIC5233YM5

OUT

=18µA

=2.2µF

Pb-Free

Marking

Features

• Wide input voltage range: 2.3V to 36V

• Ultra low ground current: 18µA

• Low dropout voltage of 270mV at 100mA

• High output accuracy of ±2.0% over temperature

• µCap: stable with ceramic or tantalum capacitors

• Excellent line and load regulation specifications

• Zero shutdown current

• Reverse battery protection

• Reverse leakage protection

• Thermal shutdown and current limit protection

• IttyBitty™ SOT-23-5 package

Applications

• Keep-alive supply in notebook and portable computers

• USB power supply

• Logic supply for high-voltage batteries

• Automotive electronics

• Battery powered systems

• 3-4 cell Li-Ion battery input range

L3AA

L318

L325

L330

L333

L350

High Input Voltage, Low IQ

Voltage

Ground Current vs. Input Voltage

1.8V

2.5V

3.0V

3.3V

5.0V

ADJ.

OUT

MIC5233

8 12 16 20 24 28 32 36 40

OUT

INPUT VOLTAGE (V)

= 1mA

–40°C to +125°C

= 10µA

Temp Range

Junction

OUT

Cap LDO Regulator

= 100µA

SOT-23-5

Package

Micrel, Inc.

MIC5233

Related parts for MIC5233BM5

MIC5233BM5 Summary of contents

Page 1

... Part Number Marking MIC5233-1.8BM5 L318 MIC5233-2.5BM5 L325 MIC5233-3.0BM5 L330 MIC5233-3.3BM5 L333 MIC5233-5.0BM5 L350 MIC5233BM5 L3AA Typical Application MIC5233BM5 =1.0µ OFF ON EN Ultra-Low Current Adjustable Regulator Application IttyBitty is a trademark of Micrel, Inc. Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com ...

Page 2

MIC5233 Pin Configuration Pin Description SOT-23-5 Pin Name GND (fixed) ADJ (ADJ.) 5 OUT MIC5233 EN GND L3xx OUT ADJ. SOT-23-5 Pin Function Supply Input. ...

Page 3

MIC5233 Absolute Maximum Ratings Input Supply Voltage ....................................... –20V to 38V Enable Input Voltage ...................................... –0.3V to 38V Power Dissipation .................................... Internally Limited Junction Temperature .............................. –40°C to +125°C Storage Temperature ............................... –65°C to +150°C ESD Rating, Note 3 Electrical ...

Page 4

MIC5233 Typical Characteristics Power Supply Rejection Ratio 100mA OUT 0.01 0 100 1000 FREQUENCY (kHz) Dropout Characteristics 3.5 3 100µA LOAD 2 50mA LOAD ...

Page 5

MIC5233 Input Current vs. Supply Voltage 120 100 30Ω 40 LOAD 20 0 -20 - SUPPLY VOLTAGE (V) February 2005 Output Voltage vs. Temperature 3. 100µA LOAD 3.04 ...

Page 6

MIC5233 Functional Diagrams MIC5233 ENABLE V REF GND Block Diagram – Fixed Output Voltage ENABLE V REF GND Block Diagram – Adjustable Output Voltage 6 Micrel, Inc. OUT R1 R2 OUT R1 ADJ R2 February 2005 ...

Page 7

MIC5233 Applications Information Enable/Shutdown The MIC5233 comes with an active-high enable pin that allows the regulator to be disabled. Forcing the enable pin low disables the regulator and sends it into a “zero” off-mode- current state. In this state, current ...

Page 8

... MIC5233 Adjustable Regulator Application The MIC5233BM5 can be adjusted from 1.24V to 20V by using two external resistors (Figure 1). The resistors set the output voltage based on the following equation:         OUT REF R    ...

Page 9

MIC5233 Package Information 1.90 (0.075) REF 0.95 (0.037) REF 3.02 (0.119) 2.80 (0.110) 0.50 (0.020) 0.35 (0.014) MICREL INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA + 1 (408) 944-0800 TEL This information furnished by Micrel in this data ...

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