High Efficiency Synchronous, Step Down Controller - Semtech Corporation

The SC4602A SC4602B is a voltage mode step down (buck) regu- lator controller that provides accurate high efficiency power conversion from an input supply range of 2.75V to 5.5V. A high level of integration reduces external com- ponent count and makes it suitable for low voltage appli- cations where cost, size and efficiency are critical. The SC4602A B drives external complementary power MOSFETs; P-channel on the high side and N-channel on the low side. The use of high side P-Channel MOSFET eliminates the need for an external Charge Pump and simplifies the high side Gate driver. Non-overlap protec- tion is provided for the Gate drive signals to prevent shoot through of the MOSFET pair. 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 mode of op- eration is activated as the SYNC/SLEEP pin is driven by an external Clock The quiescent supply current in sleep mode is typically lower than 10A. A soft start (2.4ms for the SC4602A and 1.2ms for the SC4602B is internally provided to prevent output voltage overshoot during start- up. A 100% maximum duty cycle allows the SC4602A B to operate as a low dropout Regulator in the event of a low battery condition. The SC4602A B has fixed switch- ing frequency (300KHz for the SC4602A and 550KHz for the SC4602B . By Semtech Corporation
SC4602A 's PackagesSC4602A 's pdf datasheet

SC4602A Pinout, Pinouts
SC4602A pinout,Pin out
This is one package pinout of SC4602A,If you need more pinouts please download SC4602A's pdf datasheet.

SC4602A Application circuits
SC4602A circuits
This is one application circuit of SC4602A,If you need more circuits,please download SC4602A's pdf datasheet.

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