LT1370HVIR Datasheet

IC型號(hào)：
LT1370HVIR
PDF描述：
500kHz High Efficiency 6A Switching Regulator
文件大?。?/label>
297.11KB
PDF頁數(shù)：
16頁
芯片廠家：
LINER

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LT1370

500kHz High Efficiency

6A Switching Regulator

FEATURES

DESCRIPTION

The LT

廬

1370 is a monolithic high frequency current mode

switching regulator. It can be operated in all standard

switching configurations including boost, buck, flyback,

forward, inverting and 鈥淐uk.鈥?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 12碌A(chǔ). 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.

Faster Switching with Increased Efficiency

Uses Small Inductors: 4.7碌H

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: 12碌A(chǔ) Typ

Easy External Synchronization

Switch Resistance: 0.065鈩?Typ

APPLICATIONS

Boost Regulators

Laptop Computer Supplies

Multiple Output Flyback Supplies

Inverting Supplies

TYPICAL APPLICATION

5V to 12V Boost Converter

L1*

MBRD835L

OUT

12V

53.6k

鈥?/div>

EFFICIENCY (%)

OFF

S/S

LT1370

0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0

LOAD CURRENT (A)

LT1370 鈥?TA02

C1**

22碌F

25V

GND

0.047碌F

6.19k

0.0047碌F

LT1370 鈥?TA01

C4**

22碌F

25V

脳

*COILTRONICS

UP2-4R7 (4.7碌H)

UP4-100 (10碌H)

**AVX TPSD226M025R0200

鈥?/div>

MAX I

OUT

4.7碌H 1.8A

10碌H 2A

12V Output Efficiency

= 5V

L = 10碌H

數(shù)據(jù)列表
LT1370
標(biāo)準(zhǔn)包裝
50
類別
集成電路 (IC)
家庭
PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器
系列
-
類型
降壓（降壓），升壓（升壓），反相，Cuk，回掃，正向轉(zhuǎn)換器
輸出類型
可調(diào)式
輸出數(shù)
1
輸出電壓
1.25 V ~ 42 V
輸入電壓
2.7 V ~ 25 V
PWM 型
電流模式
頻率 - 開關(guān)
500kHz
電流 - 輸出
6A
同步整流器
無
工作溫度
0°C ~ 70°C
安裝類型
表面貼裝
封裝/外殼
TO-263-8，D²Pak（7 引線+接片），TO-263CA
包裝
管件
供應(yīng)商設(shè)備封裝
D2PAK-7

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