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 POWER SUPPLY ICs
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High-speed transient response Step-down DC/DC Converter
Monolithic IC MM3543
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[Outline]
This is a Synchronous Step-down DC/DC converter IC with integrated Power MOS FET.
Wide voltage input range (4.5 to 20 V) ensures the operation at the maximum output current of 3A min.
The integrated low ON resistor power transistor achieves high efficiency, space saving, and cost reduction.

[Features]
1. 
High-speed transient response achieved by current mode control.
2. 
Safety by latch protection circuit when over-current and short-circuited
3. 
The decrease of the constant of parts in the surrounding is possible according to making to the high frequency.
4. 
Electrical characteristics
· Input Voltage Range : 4.5V ~ 20V
· Output Voltage Range : 0.8V ~ 16V
· Reference Voltage accuracy : 1%
· Maximum Output Current : 3A
· Oscillation Frequency : 500kHz (Typ.)
· Soft Start Function
· Shut Down Function (CEpin)
· Timer latch time : 1ms (Typ.)


[Package]


[Applications]
1. TVs
2. DVD Recorders
3. Blu-ray player


[Pin Assignment]

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HSOP-8C
(TOP VIEW)
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1
BS
2
VIN
3
SW
4
GND
5
FB
6
COMP
7
CE
8
SS


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[NOTE]
-Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
-The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
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