LT1612 Просмотр технического описания (PDF) - Linear Technology

Номер в каталоге

Компоненты Описание

Список матч

LT1612

Synchronous, Step-Down 800kHz PWM DC/DC Converter

Linear Technology 

LT1612

TYPICAL APPLICATIONS

VIN

2.7V TO 4.2V

10µF

CERAMIC

Single Li-Ion to 2V Converter

0.1µF

VIN BOOST

SHDN SW

L1

10µH

LT1612

20pF

MODE

FB

VC

GND

1M

30.1k

453k

1%

1%

680pF

C1: TAIYO-YUDEN LMK325BJ106MN

C2: TAIYO-YUDEN LMK325BJ226MN

L1: SUMIDA CD43-100

VOUT

2V

500mA

22µF

CERAMIC

1612 TA02

Transient Response

Li-Ion to 2V Converter Efficiency

85

80

VIN = 2.8V

75

70

VIN = 4.2V

65

VIN = 3.5V

60

55

50

1

10

100

LOAD CURRENT (mA)

1000

1612 TA04

Burst Mode Operation

VOUT 50mV/DIV

VOUT 20mV/DIV

IL 200mA/DIV

LOAD STEP

125mA TO 300mA

VIN = 4V

VOUT = 2V

MODE = HIGH

100µs/DIV

1612 TA03

IL 100mA/DIV

MODE = LOW

5µs/DIV

Inrush Current at Start-Up

VOUT 2V/DIV

INRUSH

CURRENT

200mA/DIV

VSHDN 5V/DIV

0.2ms/DIV

1612 TA06

8

1612 TA05

sn1612 1612fs

Share Link: