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

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

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.

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

Pagers

Cordless Telephones

GPS Receivers

Battery Backup

Portable Electronic Equipment

Glucose Meters

Diagnostic Medical Instrumentation

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

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