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LT1305CS8 Datasheet

  • LT1305CS8

  • Micropower High Power DC/DC Converter with Low-Battery Detec...

  • 8頁

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LT1305
Micropower High Power
DC/DC Converter with
Low-Battery Detector
FEATURES
s
s
s
s
s
s
s
DESCRIPTIO
5V at 400mA from 2V Input
Supply Voltage As Low As 1.8V
120碌A(chǔ) Quiescent Current
Low-Battery Detector
Low V
CESAT
Switch: 310mV at 2A Typ
Uses Inexpensive Surface Mount Inductors
8-Lead SO Package
The LT
廬
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碌A(chǔ) and the Shutdown pin
further reduces current to 10碌A(chǔ). A low-battery detector
provides an open-collector output that goes low when the
input voltage drops below a preset level. The LT1305 is
available in an 8-pin SO, easing board space requirements.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a trademark of Linear Technology Corporation
APPLICATI
s
s
s
S
2-Cell and 3-Cell to 5V Conversion
EL Panel Drivers
Portable Instruments
TYPICAL APPLICATI
2-Cell and 3-Cell to 5V/400mA DC/DC Converter
with Low-Battery Detect
L1
10碌H
316k
1%
2 TO 3
CELLS
90
D1
LOW BATTERY
GOES LOW AT
V
BAT
= 2.2V
V
IN
= 4.00V
EFFICIENCY (%)
V
IN
LBI
LT1305
SHDN
GND
SW
LBO
100k
301k
1%
+
C1
220碌F
412k
1%
SHUTDOWN
FB
PGND
C2
100k
220碌F
1%
+
V
OUT
5V
400mA
C1, C2: AVX TPSE227010R0100
D1: MOTOROLA MBRS130LT3
L1: COILCRAFT D03316-103
LT1305 鈥?TA03
U
Efficiency
80
V
IN
= 3.00V
V
IN
= 2.00V
V
IN
= 2.50V
70
60
1
10
100
LOAD CURRENT (mA)
1000
LT1305 鈥?TA02
UO
UO
1

LT1305CS8 產(chǎn)品屬性

  • LT1305

  • 100

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器

  • -

  • 升壓（升壓）

  • 固定

  • 1

  • 5V

  • 1.8 V ~ 10 V

  • Burst Mode?

  • -

  • 400mA

  • 無

  • 0°C ~ 70°C

  • 表面貼裝

  • 8-SOIC（0.154"，3.90mm 寬）

  • 管件

  • 8-SOIC

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