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Haoyu

HYM2596 Datasheet Preview

HYM2596 Datasheet

Simple Switcher Power Converter 150KHz 3A Step-Down Voltage Regulator

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HYM2596
HYM2596
Simple Switcher Power Converter 150KHz
3A Step-Down Voltwawgwe.DaRtaeSgheuetl4aUt.ocorm
Data Sheet
Features
Output Voltage: 3.3V, 5V, 12V and Adjustable
Output Version
Adjustable Version Output Voltage Range, 1.23V
to 37V±4%
150 KHz ±15% Fixed Switching Frequency
Voltage Mode Non-Synchronous PWM Control
Thermal-Shutdown and Current-Limit Protection
ON/OFF Shutdown Control Input
Operating Voltage Can be Up to 40V
Output Load Current: 3A
TO220-5L TO220-5L(R) and TO263-5L Packages
Low Power Standby Mode
Built-In Switching Transistor on Chip
Applications
Simple High-efficiency Step-Down Regulator
On-card Switching Regulators
Positive to Negative Converter
General Description
The HYM2596 series are monolithic IC that design
for a step-down DC/DC converter, and own the
ability of driving a 3A load without additional
transistor component. Due to reducing the number
of external component, the board space can be
saved easily. The external shutdown function can be
controlled by logic level and then come into standby
mode. The internal compensation makes feedback
control have good line and load regulation without
external design. 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. The
HYM2596 series operates at a switching frequency
of 150 KHz thus allowing smaller sized filter
components than what would be needed with lower
frequency switching regulators. Other features
include a guaranteed 14% tolerance on output
voltage under specified input voltage and output
load conditions, and ±15% on the oscillator
frequency. The output version included fixed 3.3V,
5V, 12V, and an adjustable type. The packages are
available in a standard 5-lead TO-220 package and
a 5-lead TO-263.
Block Diagram and Pin Diagram
Pin Assignment
-1-




Haoyu

HYM2596 Datasheet Preview

HYM2596 Datasheet

Simple Switcher Power Converter 150KHz 3A Step-Down Voltage Regulator

No Preview Available !

HYM2596
Block Diagram
www.DataSheet4U.com
Pin Description
Pin Number
1
2
3
4
5
Symbol
+VIN
Output
GND
Feedback
Description
This is the positive input supply for the IC switching regulator. A suitable input
bypass capacitor must be present at this pin to minimize voltage transients
and to supply the switching currents needed by the regulator.
Internal switch. The voltage at this pin switches between (+VIN-VSAT) and
approximately 0.5V, with a duty cycle of approximately VOUT/VIN. To
minimize coupling to sensitive circuitry, the PC board copper area connected
to this pin should be kept to a minimum.
Circuit ground.
Senses the regulated output voltage to complete the feedback loop.
Pulling this pin below a threshold voltage of approximately 1.3V turns the
regulator on, and pulling this pin above 1.3V (up to a maximum of 25V) shuts
the regulator down. If this shutdown feature is not needed, the ON /OFF pin
can be wired to the ground pin or it can be left open, in either case the
regulator will be in the ON condition.
-2-


Part Number HYM2596
Description Simple Switcher Power Converter 150KHz 3A Step-Down Voltage Regulator
Maker Haoyu
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HYM2596 Datasheet PDF





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