AIC2511PM5TB 查看數據表（PDF） - Analog Intergrations

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AIC2511PM5TB

3A STEP-DOWN PWM CONVERTER

Analog Intergrations 

AIC2511

3A STEP-DOWN PWM CONVERTER

FEATURES

Operating Input Voltage From 4.5V to 24V

3.3V, 5V, 12V and Adjustable Output Version

Adjustable Version Output Voltage Range,

1.25V to 24V ± 4% max Over Line and Load

Regulation

Available in TO-263-5, TO-220-5, TO-220B

and TO-252-5 Package

Requires Only 4 External Components.

150KHz Fixed Constant Frequency

Low Power Standby Mode, IQ Typically 80µA

TTL Shutdown Capability.

Current Limit and Thermal Shutdown

Protection.

3A Guaranteed Output Load Current

APPLICATIONS

Fixed Voltage power supply for LCD Monitor

and LCD TV

On-Card Switching regulators

Simple High Efficiency Step-down regulator

GENERAL DESCRIPTION

The AIC2511 series are step-down monolithic

PWM converters for delivering 3A at fixed

voltages of 3.3V, 5.0V, 12V and using an

external divider to adjust output voltage from

1.25V to 24V with excellent line and load

regulation.

Switching frequency up to 150KHz is

achievable thus allowing smaller-sized filter

components. Internal current limit and thermal

shutdown circuits provide protection from

overloads. The internal precise reference

combined with voltage feedback loop provides

optimum output voltage accuracy and fast load

transient response.

TYPICAL APPLICATION CIRCUIT

VIN

+

C1

AIC2511

1

IN

2

OUT

5 ON/OFF

4

FB

GND

3

L1

D1

+

C2

VOUT

CF

R1

C1: electrolyte capacitor 470uF

C2: electrolyte capacitor 220uF

CF:refer to table1

D1: SK54

L1:33uH

R2

R1 short, R2 and CF open for fixed version

Analog Integrations Corporation 3A1, No.1 Li-Hsin Rd. I, Science Park, Hsinchu 300, Taiwan

TEL: 886-3-5772500

FAX: 886-3-5772510 www.analog.com.tw

DS-2511P-02 071607

1

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