产品
UMW LM2596HVS-12
友台代理商 UMW LM2596HVS-12 DC-DC芯片 TO263-5
商品名称：DC-DC芯片
包装：卷装/500/盘
封装形式：TO263-5
The LM2596 /LM2596HV series of requlators are monolithicintegrated circuits that provide all the active functions for astep-down (buck)switching regulator, capable of driving a 3Aload with excellent line and load requlation. These devicesare available in fixed output voltages of 3.3V. 5V. 12V. and aradjustable output version.
Requiring a minimum number of external components, theseregulators are simple to use and include internal frequencycompensationt,and a fixed-frequency oscillator.
The LM2596 /LM2596HV series operates at a switchingfrequency of150 kHz thus allowing smaller sized filter com.pontents than what would be needed with lower frequencyswitching regulators. Available in a standard 5-lead TO-220package with several different lead bend options. and a5-lesd TO-262 surface mount package.
A standard series of inductors are available from severadifferent manufacturers optimized for use with the LM2596series. This feature greatly simplifies the design oswitch-mode power supplies.
Other features include a quaranteed +4% tolerance on out-put voltage under specified input voltage and output loadconditions, and +15% on the oscillator frequency. Externalshutdown is included, featuring typically 80 μA standby cur-rent. Self protection features include a two stage frequencyreducing current limit for the output switch and an overtemperature shutdown for complete protection under faultconditions.
Features
3.3V. 5V. 12V, and adjustable output versions
Adjustable version output voltage range, 1.2V to 37V
(57V for HV version)±4% max over line and load conditions
Available in To-220 and TO-263,T0-220B packages
Guaranteed 3A output load current
Input voltage range up to 40V
Requires only 4 external components
Excellent line and load regulation specifications
150 kHz fixed frequency internal oscillator
TTL shutdown capability
Low power standby mode, lo typically 80 μA
High efficiency
Uses readily available standard inductors
Thermal shutdown and current limit protection
Applications
Simple high-efficiency step-down (buck)regulator
mOn-card switching regulatorsPositive to negative converte!
Note: tPatent Number 5.382.918.
