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參數資料
| 型號： | BGV503 |
| 英文描述： | ?Negative Voltage Generator IC. Vout = -2.1 ... -5 V. Iout.max = 5 mA. TSSOP-10 ? |
| 中文描述： | ？負電壓發(fā)生器芯片。輸出電壓\u003d -2.1 ... -5五，輸出電流。最大值\u003d 5毫安。采用TSSOP - 10？ |
| 文件頁數： | 7/11頁 |
| 文件大小： | 102K |
| 代理商： | BGV503 |
BGV503
Data sheet
7
2001-11-09 2002-11-11
Preliminary
Functional Block Diagram
The BGV503 is a charge pump based negative voltage generator. The supply voltage
(
V
CC
) is inverted and applied to the output NV
The BGV503 consists of an internal oscillator, a switching control circuit, the internal
charge pump switches and a drain current regulator.
The switching frequency (clk) of the charge-pump is determined by the integrated
oscillator and is between 100 kHz and 400 kHz. It is possible to stop the operating of the
BGV503 by connecting V
DISQ
to a voltage lower than 1 V (shutdown mode). The
switching control circuit ensures that the internal MOS-switches of the charge-pump
operate at the correct time. The regulator consists of two transistors and two internal
resistors. It can be used to control the biasing of Power amplifiers or GaAs-FET
amplifiers (see Figure 3).
Figure 2
Block Diagram of the Negative Voltage Generator
!
!
"
#
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