LT1307B是Single Cell Micropower 600kHz PWM DC/DC Converters

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LT1307B - LT1307B是Single Cell Micropower 600kHz PWM DC/DC Converters

LT1307B是Linear公司的一款LCD / CCD / OLED 偏置产品，LT1307B是Single Cell Micropower 600kHz PWM DC/DC Converters，本站介绍了LT1307B的封装应用图解、特点和优点、功能等，并给出了与LT1307B相关的凌力尔特元器件型号供参考。

LT1307B - Single Cell Micropower 600kHz PWM DC/DC Converters

LT1307 - Single Cell Micropower 600kHz PWM DC/DC Converters - Linear Technology（凌力尔特）

功能描述

The LT?1307/LT1307B are micropower, fixed frequency DC/DC converters that operate from an input voltage as low as 1V. First in the industry to achieve true current mode PWM performance from a single cell supply, the LT1307 features automatic shifting to power saving Burst Mode operation at light loads. High efficiency is maintained over a broad 100μA to 100mA load range. The LT1307B does not shift into Burst Mode operation at light loads, eliminating low frequency output ripple at the expense of light load efficiency. The devices contain a low-battery detector with a 200mV reference and shut down to less than 5μA. No load quiescent current of the LT1307 is 50μA and the internal NPN power switch handles a 500mA current with a voltage drop of just 295mV.

Unlike competitive devices, large electrolytic capacitors are not required with the LT1307/LT1307B in single cell applications. The high frequency (600kHz) switching allows the use of tiny surface mount multilayer ceramic (MLC) capacitors along with small surface mount inductors. The devices work with just 10μF of output capacitance and require only 1μF of input bypassing.

The LT1307/LT1307B are available in 8-lead MSOP, PDIP and SO packages.

特点

Uses Small Ceramic Capacitors

50µA Quiescent Current (LT1307)

1mA Quiescent Current (LT1307B)

Operates with VIN as Low as 1V

600kHz Fixed Frequency Operation

Starts into Full Load

Low Shutdown Current: 3µA

Low-Battery Detector

3.3V at 75mA from a Single Cell

Automatic Burst Mode® Operation at Light Load (LT1307)

Continuous Switching at Light Load (LT1307B)

Low VCESAT Switch: 295mV at 500mA

应用

Pagers

Cordless Telephones

GPS Receivers

Battery Backup

Portable Electronic Equipment

Glucose Meters

Diagnostic Medical Instrumentation

以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）

器件型号	封装	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量)
LT1307BCMS8	MS-8	C	$3.15	$2.40
LT1307BCMS8#PBF	MS-8	C	$3.15	$2.40
LT1307BCMS8#TR	MS-8	C		$2.46
LT1307BCMS8#TRPBF	MS-8	C		$2.46
LT1307BCS8	SO-8	C	$2.75	$2.05
LT1307BCS8#PBF	SO-8	C	$2.75	$2.05
LT1307BCS8#TR	SO-8	C		$2.11
LT1307BCS8#TRPBF	SO-8	C		$2.11
LT1307BIS8	SO-8	I	$3.50	$2.60
LT1307BIS8#PBF	SO-8	I	$3.50	$2.60
LT1307BIS8#TR	SO-8	I		$2.66
LT1307BIS8#TRPBF	SO-8	I		$2.66
LT1307CMS8	MS-8	C	$3.15	$2.40
LT1307CMS8#PBF	MS-8	C	$3.15	$2.40
LT1307CMS8#TR	MS-8	C		$2.46
LT1307CMS8#TRPBF	MS-8	C		$2.46
LT1307CN8	N-8	C	$2.75	$2.05
LT1307CN8#PBF	N-8	C	$2.75	$2.05
LT1307CS8	SO-8	C	$2.75	$2.05
LT1307CS8#PBF	SO-8	C	$2.75	$2.05
LT1307CS8#TR	SO-8	C		$2.11
LT1307CS8#TRPBF	SO-8	C		$2.11
LT1307IS8	SO-8	I	$3.50	$2.60
LT1307IS8#PBF	SO-8	I	$3.50	$2.60
LT1307IS8#TR	SO-8	I		$2.66
LT1307IS8#TRPBF	SO-8	I		$2.66