MIC26950 Datasheet, PDF (3/27 Pages) Micrel Semiconductor – 12A Hyper Speed Control Synchronous DC-DC Buck Regulator

Micrel, Inc.
MIC26950
Pin Description (Continued)
Pin
Number
20
4, 9, 10,
11, 12
23
1, 3, 28
Pin Name
BST
SW
VIN
NC
Pin Function
Boost (Output): Bootstrapped voltage to the high-side N-channel internal MOSFET driver. A Schottky
diode is connected between the VDD pin and the BST pin. A boost capacitor of 0.1μF is connected
between the BST pin and the SW pin.
Switch Node (Output): Internal connection for the high-side MOSFET source and low-side MOSFET
drain.
Power Supply Voltage (Input): Requires bypass capacitor to SGND.
No Connect.
September 2010
3
M9999-091710-C