参数资料
型号: LT1305CS8#PBF
厂商: Linear Technology
文件页数: 1/8页
文件大小: 0K
描述: IC REG BOOST 5V 0.4A 8SOIC
标准包装: 100
类型: 升压(升压)
输出类型: 固定
输出数: 1
输出电压: 5V
输入电压: 1.8 V ~ 10 V
PWM 型: Burst Mode?
电流 - 输出: 400mA
同步整流器:
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
包装: 管件
供应商设备封装: 8-SOIC
产品目录页面: 1326 (CN2011-ZH PDF)
LT1305
Micropower High Power
DC/DC Converter with
Low-Battery Detector
FEATURE S
D ESCRIPTIO
s
s
s
s
s
s
s
5V at 400mA from 2V Input
Supply Voltage As Low As 1.8V
120 μ A Quiescent Current
Low-Battery Detector
Low V CESAT Switch: 310mV at 2A Typ
Uses Inexpensive Surface Mount Inductors
8-Lead SO Package
The LT ? 1305 is a micropower step-up DC/DC converter
that uses Burst Mode TM operation. Similar to the LT1303,
the LT1305 features a 2A internal low-loss switch and can
deliver up to four times the output power of the LT1303.
Quiescent current is only 120 μ A and the Shutdown pin
further reduces current to 10 μ A. A low-battery detector
provides an open-collector output that goes low when the
input voltage drops below a preset level. The LT1305 is
A PPLICATI
S
available in an 8-pin SO, easing board space requirements.
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
s
s
2-Cell and 3-Cell to 5V Conversion
EL Panel Drivers
Portable Instruments
Burst Mode is a trademark of Linear Technology Corporation
TYPICAL A PPLICATI
2-Cell and 3-Cell to 5V/400mA DC/DC Converter
with Low-Battery Detect
Efficiency
L1
10 μ H
D1
90
316k
1%
V IN
LBI
SW
LBO
100k
LOW BATTERY
GOES LOW AT
V BAT = 2.2V
80
V IN = 4.00V
V IN = 3.00V
2 TO 3
CELLS
+ C1
220 μ F
412k
1%
SHUTDOWN
LT1305
SHDN
GND
FB
PGND
301k
1%
100k
1%
C2
220 μ F
+
V OUT
5V
400mA
70
V IN = 2.00V
V IN = 2.50V
C1, C2: AVX TPSE227010R0100
LT1305 ? TA03
D1: MOTOROLA MBRS130LT3
L1: COILCRAFT D03316-103
60
1
10 100
1000
LOAD CURRENT (mA)
LT1305 ? TA02
1
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