LT1317是Micropower, 600kHz PWM DC/DC Converters

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LT1317 - LT1317是Micropower, 600kHz PWM DC/DC Converters

LT1317是Linear公司的一款LCD / CCD / OLED 偏置产品，LT1317是Micropower, 600kHz PWM DC/DC Converters，本站介绍了LT1317的封装应用图解、特点和优点、功能等，并给出了与LT1317相关的凌力尔特元器件型号供参考。

LT1317 - Micropower, 600kHz PWM DC/DC Converters

LT1317 - Micropower, 600kHz PWM DC/DC Converters - Linear Technology（凌力尔特）

功能描述

The LT?1317/LT1317B are micropower, fixed frequency step-up DC/DC converters that operate over a wide input voltage range of 1.5V to 12V. The LT1317 features automatic shifting to power saving Burst Mode’ operation at light loads. High efficiency is maintained over a broad 300μA to 200mA load range. Peak switch current during Burst Mode operation is kept below 250mA for most operating conditions which results in low output ripple voltage, even at high input voltages. The LT1317B does not shift into Burst Mode operation at light loads, eliminating low frequency output ripple at the expense of light load efficiency.The LT1317/LT1317B contain an internal low-battery detector with a 200mV reference that stays alive when the device goes into shutdown.No-load quiescent current of the LT1317 is 100μA and shuts down to 30μA. The internal NPN power switch handles a 500mA current with a voltage drop of just 300mV.The LT1317/LT1317B are available in MS8 and SO-8 packages.

特点

100µA Quiescent Current

Operates with VIN as Low as 1.5V

600kHz Fixed Frequency Operation

Starts into Full Load

Low-Battery Detector Active in Shutdown

Automatic Burst Mode Operation at Light Load (LT1317)

Continuous Switching at Light Loads (LT1317B)

Low VCESAT Switch: 300mV at 500mA

Pin for Pin Compatible with the LT1307/LT1307B

应用

Cellular Telephones

Cordless Telephones

Pagers

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)
LT1317BCMS8	MS-8	C	$2.75	$2.45
LT1317BCMS8#PBF	MS-8	C	$2.75	$2.45
LT1317BCMS8#TR	MS-8	C		$2.51
LT1317BCMS8#TRPBF	MS-8	C		$2.51
LT1317BCS8	SO-8	C	$2.45	$2.25
LT1317BCS8#PBF	SO-8	C	$2.45	$2.25
LT1317BCS8#TR	SO-8	C		$2.31
LT1317BCS8#TRPBF	SO-8	C		$2.31
LT1317BIS8	SO-8	I	$3.30	$2.80
LT1317BIS8#PBF	SO-8	I	$3.30	$2.80
LT1317BIS8#TR	SO-8	I		$2.86
LT1317BIS8#TRPBF	SO-8	I		$2.86
LT1317CMS8	MS-8	C	$2.75	$2.45
LT1317CMS8#PBF	MS-8	C	$2.75	$2.45
LT1317CMS8#TR	MS-8	C		$2.51
LT1317CMS8#TRPBF	MS-8	C		$2.51
LT1317CS8	SO-8	C	$2.45	$2.25
LT1317CS8#PBF	SO-8	C	$2.45	$2.25
LT1317CS8#TR	SO-8	C		$2.31
LT1317CS8#TRPBF	SO-8	C		$2.31
LT1317IS8	SO-8	I	$3.10	$2.80
LT1317IS8#PBF	SO-8	I	$3.10	$2.80
LT1317IS8#TR	SO-8	I		$2.86
LT1317IS8#TRPBF	SO-8	I		$2.86