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參數(shù)資料
| 型號： | AT9933LG-G |
| 廠商： | SUPERTEX INC |
| 元件分類： | 穩(wěn)壓器 |
| 中文描述： | SWITCHING CONTROLLER, PDSO8 |
| 封裝： | 4.90 X 3.90 MM, 1.75 MM HEIGHT, 1.27 MM PITCH, GREEN, MS-012AA, SOIC-8 |
| 文件頁數(shù)： | 4/9頁 |
| 文件大?。?/td> | 505K |
| 代理商： | AT9933LG-G |
4
AT9933
Supertex inc.
●
1235 Bordeaux Drive, Sunnyvale, CA 94089
●
Tel: 408-222-8888
●
www.supertex.com
Pin Description
Pin Number
Name
Description
1
VIN
This pin is the input of a 8.0 - 75V voltage regulator.
2
CS1
These pins are used to sense the input and output currents of the boost-buck converter.
They are the non-inverting inputs of the internal comparators.
7
CS2
3
GND
Ground return for all the internal circuitry. This pin must be electrically connected to the
ground of the power train.
4
GATE
This pin is the output gate driver for an external N-channel power MOSFET.
5
PWMD
When this pin is left open or pulled to GND, the gate driver is disabled. Pulling the pin to
a voltage greater than 2.0V will enable the gate drive output.
This is a power supply pin for all internal circuits. It must be bypassed to GND with a low
ESR capacitor greater than 0.1μF.
This pin provides accurate reference voltage. It must be bypassed with a 0.01 - 0.1μF
capacitor to GND.
6
VDD
8
REF
Block Diagram
Regulator
7.5V
VIN
CS1
CS2
PWMD
GATE
VDD
REF
GND
1.25V
AT9933
Input Comparator
Output Comparator
0mV
100mV
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