LT1676是Wide Input Range, High Efficiency, Step-Down Switching Regulator

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LT1676 - LT1676是Wide Input Range, High Efficiency, Step-Down Switching Regulator

LT1676是Linear公司的一款内部开关电源降压产品，LT1676是Wide Input Range, High Efficiency, Step-Down Switching Regulator，本站介绍了LT1676的封装应用图解、特点和优点、功能等，并给出了与LT1676相关的凌力尔特元器件型号供参考。

LT1676 - Wide Input Range, High Efficiency, Step-Down Switching Regulator

LT1676 - Wide Input Range, High Efficiency, Step-Down Switching Regulator - Linear Technology（凌力尔特）

功能描述

The LT1676 is a wide input range, high efficiency Buck (step-down) switching regulator. The monolithic die includes all oscillator, control and protection circuitry. The part can accept input voltages as high as 60V and contains an output switch rated at 700mA peak current. Current mode control offers excellent dynamic input supply rejection and short-circuit protection. The LT1676 contains several features to enhance efficiency. The internal control circuitry is normally powered via the VCC pin, thereby minimizing power drawn directly from the VIN supply (see Applications Information). The action of the LT1676 switch circuitry is also load dependent. At medium to high loads, the output switch circuitry maintains high rise time for good efficiency. At light loads, rise time is deliberately reduced to avoid pulse skipping behavior. The available SO-8 package and 100kHz switching frequency allow for minimal PC board area requirements.

特点

Wide Input Range: 7.4V to 60V

700mA Peak Switch Current Rating

Adaptive Switch Drive Maintains Efficiency at High

Load Without Pulse Skipping at Light Load

True Current Mode Control

100kHz Fixed Operating Frequency

Synchronizable to 250kHz

Low Supply Current in Shutdown: 30μA

Available in 8-Pin SO and PDIP Packages

应用

Automotive DC/DC Converters

Telecom 48V Step-Down Converters

Cellular Phone Battery Charger Accessories

IEEE 1394 Step-Down Converters

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)
LT1676CN8	N-8	C	$3.15	$2.60
LT1676CN8#PBF	N-8	C	$3.15	$2.60
LT1676CS8	SO-8	C	$3.25	$2.65
LT1676CS8#PBF	SO-8	C	$3.25	$2.65
LT1676CS8#TR	SO-8	C		$2.71
LT1676CS8#TRPBF	SO-8	C		$2.71
LT1676IN8	N-8	I	$3.70	$3.00
LT1676IN8#PBF	N-8	I	$3.70	$3.00
LT1676IS8	SO-8	I	$3.85	$3.15
LT1676IS8#PBF	SO-8	I	$3.85	$3.15
LT1676IS8#TR	SO-8	I		$3.21
LT1676IS8#TRPBF	SO-8	I		$3.21