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

The LT®1676 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

典型应用

应用

Automotive DC/DC Converters
Telecom 48V Step-Down Converters
Cellular Phone Battery Charger Accessories
IEEE 1394 Step-Down Converters

封装信息

**Order Information 订购型号**
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#PBF	N-8	C	$3.15	$2.60
LT1676CS8#PBF	SO-8	C	$3.25	$2.65
LT1676CS8#TRPBF	SO-8	C		$2.71
LT1676IN8#PBF	N-8	I	$3.70	$3.00
LT1676IS8#PBF	SO-8	I	$3.85	$3.15
LT1676IS8#TRPBF	SO-8	I		$3.21

演示电路板


器件型号	描述	价格
DC204A-A	LT1676CS8 \| High Voltage, High Eff., Step Down Switching Regulator, 7V to 60Vin, 3.3V and 5V @ 0.5A Out (thru-hole input cap)	$75.00