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SC4603

Semtech Corporation
Part Number SC4603
Manufacturer Semtech Corporation
Description High Efficiency Synchronous Buck
Published Nov 17, 2008
Detailed Description Very Low Input, MHz Operation, High Efficiency Synchronous Buck POWER MANAGEMENT Description The SC4603 is a voltage mod...
Datasheet PDF File SC4603 PDF File

SC4603
SC4603

Overview
Very Low Input, MHz Operation, High Efficiency Synchronous Buck POWER MANAGEMENT Description The SC4603 is a voltage mode step down (buck) regulator controller that provides accurate high efficiency power conversion from input supply range 2.
25V to 5.
5V.
A high level of integration reduces external component count and makes it suitable for low voltage applications where cost, size and efficiency are critical.
The SC4603 drives external complementary power MOSFETs; P-channel on the high side and N-channel on www.
DataSheet4U.
com the low side.
The use of high side P-channel MOSFETs eliminates the need for an external charge pump and simplifies the high side gate driver.
Non-overlap protection is provided for the gate drive signals to prevent shoot through of the MOSFET pair.
The voltage drop across the P-channel MOSFET during its conduction is sensed for lossless short circuit current limiting.
A low power sleep mode can be achieved by forcing the SYNC/SLEEP pin below 0.
8V.
A synchronous ...


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