HT7466 查看數據表（PDF） - Holtek Semiconductor
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HT7466 Datasheet PDF : 9 Pages
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Block Diagram
HT7466
Pin Assignment
SS 1
BS 2
V IN 3
SW
4
8 EN
7 COM P
6 FB
5 GND
H T7466
8 S O P -A
Pin Description
Pin No. Pin Name
Description
Soft-start input.
1
SS If the soft start function is to be used then an external capacitor should be connected between
this pin and ground. If the soft start function is not required the pin should be left open.
Internal power NMOS gate drive boost input.
2
BS A 10nF or greater value capacitor should be connected from SW to BS for additional Power
NMOS gate driving purposes.
Power supply input.
3
VIN The input supply pin for the device, VIN, is connected to a supply voltage between 4.75V to
24V.
4
SW
Power switching output.
The internal power MOS drain is connected to the inductor, diode and VIN.
5
GND
Ground.
Device ground voltage reference.
6
FB
Feedback pin.
The feedback pin is connected to an external resistor divider to measure the output voltage.
Error amplifier output.
7
COMP Used for compensation of the regulation control loop. Connect a series RC network from
COMP to GND to compensate the regulation control loop. The COMP pin value is 1.222V.
Enable input.
8
EN This pin is set high to turn on the regulator and low to turn it off. The pin should be left
unconnected if not used.
Rev. 1.00
2
September 02, 2011
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