Datasheet > LT1301C

LT1301C

更新时间： 2024-11-20 22:51:51

品牌	Logo	应用领域
凌特 - Linear		转换器闪存
页数	文件大小	规格书
12页	287K
描述
Micropower High Efficiency 5V/12V Step-Up DC/DC Converter for Flash Memory

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LT1301C 数据手册

LT1301

Micropower High Efficiency

5V/12V Step-Up DC/DC

Converter for Flash Memory

DESCRIPTION

FEATURES

■

12V at 120mA from 5V or 3.3V Supply

TheLT1301isamicropowerstep-upDC/DCconverterthat

utilizes Burst Mode™ operation. The device can deliver 5V

or 12V from a two-cell battery input. It features program-

mable 5V or 12V output via a logic-controlled input, no-

loadquiescentcurrentof120µAandashutdownpinwhich

reducessupplycurrentto10µA.Theon-chippowerswitch

has a low 170mV saturation voltage at a switch current of

1A, a four-fold reduction over prior designs. A 155kHz

internal oscillator allows the use of extremely small sur-

facemountinductorsandcapacitors.Operationisguaran-

teedat1.8Vinput. Thisallowsmoreenergytobeextracted

fromthebattery, increasingoperatinglife. TheI_LIMpincan

be used for soft start or to program peak switch current

with a single resistor allowing the use of even smaller

inductors in lighter load applications. The LT1301 is

available in an 8-lead SOIC package, minimizing board

space requirements. For a selectable 3.3V/5V step-up

converter, please see the LT1300. For higher output

power, see the LT1302.

■

Supply Voltage as Low as 1.8V

■

Better High Current Efficiency Than CMOS

Up to 89% Efficiency

120µA Quiescent Current

■

Shutdown to 10µA

■

Programmable 5V or 12V Output

■

Low V_CESATSwitch: 170mV at 1A Typical

■

I_LIMPin Programs Peak Switch Current

■

Uses Inexpensive Surface Mount Inductors

■

8-Lead DIP or SOIC Package

APPLICATIONS

■

Flash Memory V_PPGenerator

■

Palmtop Computers

■

Portable Instruments

■

Bar-Code Scanners

■

Personal Digital Assistants

PCMCIA Cards

■

Burst Mode is a trademark of Linear Technology Corporation.

TYPICAL APPLICATIONS N

Output Voltage

Efficiency

33µH

3.3V

12V

OUTPUT

12V

V_OUT

2V/DIV

= 5V

SELECT

SENSE

= 3.3V

LT1301

47µF

33µF

20V

0.1µF*

SHDN

PGND

N/C

SHUTDOWN

LIM

GND

SHUTDOWN

10V/DIV

1ms/DIV

LT1301 TAO1

*REQUIRED FOR 5V OUTPUT

_IN= 5V, V_OUT= 12V

LT1301 F1

LOAD = 100Ω

L1 = COILCRAFT DO3316-333

OR SUMIDA CD73-330KC

D1 = 1N5817 OR MOTOROLA

MBRS130LT3

LOAD CURRENT (mA)

100

300

C1 = AVX TPSD476M016R0100

OR SANYO OS-CON 165A47M

C2 = AVX TPSD336M020R0100

OR SANYO OS-CON 205A33M

LT1301 TA2

LT1300 F2

Figure 1. 3.3V/5V to 12V Step-Up Converter

12 3 4 5 6 7...12

中文翻译

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与LT1301C相关器件

型号	品牌	获取价格	描述	数据表
LT1301CN8	Linear	获取价格	Micropower High Efficiency 5V/12V Step-Up DC/DC Converter for Flash Memory
LT1301CN8#PBF	Linear	获取价格	暂无描述
LT1301CN8-12	Linear	获取价格	IC 1 A SWITCHING REGULATOR, PDIP8, PLASTIC, DIP-8, Switching Regulator or Controller
LT1301CN8-5	Linear	获取价格	IC 1 A SWITCHING REGULATOR, PDIP8, PLASTIC, DIP-8, Switching Regulator or Controller
LT1301CS8	Linear	获取价格	Micropower High Efficiency 5V/12V Step-Up DC/DC Converter for Flash Memory
LT1301CS8#PBF	Linear	获取价格	LT1301 - Micropower High Efficiency 5V/12V Step-Up DC/DC Converter for Flash Memory; Packa
LT1301CS8#TR	Linear	获取价格	LT1301 - Micropower High Efficiency 5V/12V Step-Up DC/DC Converter for Flash Memory; Packa
LT1301CS8-12	Linear	获取价格	IC 1 A SWITCHING REGULATOR, PDSO8, 0.150 INCH, PLASTIC, SO-8, Switching Regulator or Contr
LT1301I	Linear	获取价格	Micropower High Efficiency 5V/12V Step-Up DC/DC Converter for Flash Memory
LT1301IN8	Linear	获取价格	LT1301 - Micropower High Efficiency 5V/12V Step-Up DC/DC Converter for Flash Memory; Packa

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