LT1370IRTRPBF Linear Technology Corporation, LT1370IRTRPBF Datasheet

LT1370IRTRPBF

Manufacturer Part Number

LT1370IRTRPBF

Description

TO263

Manufacturer

Linear Technology Corporation

Datasheets

1.LT1370IRTRPBF.pdf (16 pages)

2.LT1370IRTRPBF.pdf (16 pages)

Specifications of LT1370IRTRPBF

Date_code

07+

Current page: 1 of 16
Download datasheet (174Kb)

APPLICATIONS

FEATURES

■

TYPICAL

■

Faster Switching with Increased Efficiency

Uses Small Inductors: 4.7µH

All Surface Mount Components

Low Minimum Supply Voltage: 2.7V

Quiescent Current: 4.5mA Typ

Current Limited Power Switch: 6A

Regulates Positive or Negative Outputs

Shutdown Supply Current: 12µA Typ

Easy External Synchronization

Switch Resistance: 0.065Ω Typ

Boost Regulators

Laptop Computer Supplies

Multiple Output Flyback Supplies

Inverting Supplies

OFF

C1**

22µF

25V

APPLICATION

S/S

GND

0.047µF

LT1370

5V to 12V Boost Converter

L1*

MBRD835L

0.0047µF

LT1370 • TA01

53.6k

6.19k

C4**

22µF

25V

× 2

12V

OUT

†

MAX I

COILTRONICS

UP2-4R7 (4.7µH)

UP4-100 (10µH)

AVX TPSD226M025R0200

4.7µH

10µH

OUT

1.8A

OUT

DESCRIPTION

The LT

switching regulator. It can be operated in all standard

switching configurations including boost, buck, flyback,

forward, inverting and “Cuk.” A 6A high efficiency switch

is included on the die, along with all oscillator, control and

protection circuitry.

The LT1370 typically consumes only 4.5mA quiescent

current and has higher efficiency than previous parts.

High frequency switching allows for very small inductors

to be used.

New design techniques increase flexibility and maintain

ease of use. Switching is easily synchronized to an exter-

nal logic level source. A logic low on the Shutdown pin

reduces supply current to 12µA. Unique error amplifier

circuitry can regulate positive or negative output voltage

while maintaining simple frequency compensation tech-

niques. Nonlinear error amplifier transconductance

reduces output overshoot on start-up or overload recov-

ery. Oscillator frequency shifting protects external com-

ponents during overload conditions.

, LTC and LT are registered trademarks of Linear Technology Corporation.

1370 is a monolithic high frequency current mode

6A Switching Regulator

500kHz High Efficiency

L = 10µH

0.2 0.4 0.6 0.8

= 5V

12V Output Efficiency

LOAD CURRENT (A)

1.0 1.2 1.4 1.6 1.8

LT1370

LT1370 • TA02

sn1370 1370fs

2.0

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