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LR2596 Datasheet, PDF (1/7 Pages) Leshan Radio Company – 150KHz, 3A PWM Buck DC/DC Converter TTL shutdown capability | |||
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LESHAN RADIO COMPANY, LTD.
LR2596
150KHz, 3A PWM Buck DC/DC Converter
LR2596 Series
Description
The LR2596 is Monolithic IC that design for a step-down DC/DC Converter, and own
the ability of driving a 3A load without additional transistor component. The output
version included 3.3V, 5V, 12V and an adjustable type. It operates at a switching
frequency of 150KHz thus allowing smaller sized filter components than what would
be needed with lower frequency switching regulators. Other features include a
guaranteed ±4% tolerance on output voltage under specified input voltage and
output load conditions, and ±15% on the oscillator frequency. Regarding protected
function, thermal shutdown is to prevent over temperature operating from damage,
and current limit is against over current operating of the output switch.
Features
⢠3.3V, 5V, 12V and adjustable
⢠Adjustable version output voltage range: 1.4-37V
⢠±4% max over line and load conditions
⢠150KHz ±15% fixed switching frequency
⢠TTL shutdown capability
⢠Operating voltage can be up to 40V
⢠Output load current: 3A
⢠TO220-5L and TO263-5L packages
⢠Low power standby mode
⢠Thermal-shuntdown and current-limit protection
⢠High efficiency
⢠Built-in switching a transistor on chip, requires only 4 external components
Applications
⢠Simple High-efficiency step-down regulator
⢠Positive to negative converter
⢠On-card switching regulators
Connection Diagrams
TO220-5L
Side
View
Top
View
Metal Tab GND
Pins 1,3,5
Pins 2,4
5 - On/Off
4 - Feed Back
3 - Ground
2 - Output
1 - VIN
TO263-5L
Side
View
Top
View
Metal Tab GND
12345
5 - On/Off
4 - Feed Back
3 - Ground
2 - Output
1 - VIN
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