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參數(shù)資料
| 型號： | LV5254LG |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PBGA24 |
| 封裝： | 3 X 3 MM, FLGA-24 |
| 文件頁數(shù)： | 12/14頁 |
| 文件大?。?/td> | 136K |
| 代理商： | LV5254LG |
LV5254LG
No.A0584-7/14
Recommended Power On and Off Sequences
(1) Apply the VDD voltage to the SVDD and PVDD pins.
(2) If VS mode is used, apply the VS voltage. If external setting mode is used, apply the external reference voltage.
(3) Start pre-charging the flying capacitor with a high-level input to the STBY pin.
(4) Start charging the pump-up capacitor with the charge pump sub-driver (soft start).
(5) Switch to the charge pump driver. This starts charging of the pump-up capacitor by the main driver.
(6) Regulator output starts.
(7) Stop IC drive by applying a low-level input to the STBY pin to start VOUT output discharge operation by the internal
discharge transistor. (This operates when the STBY pin is low.)
(8) If VS mode is used, shut down the VS voltage, and if external setting mode is used, shut down the external reference
voltage.
(9) Shut down the VDD voltage.
SVDD (pin 9)
PVDD (pin 11)
VDD
-VDD
VOUT
STBY (pin 2)
CP CLK (1MHz)
CP output
C2 (pin 18)
Regulator output
VOUT (pin 21)
VS (pin 23) : VS mode
or
VREF_ext
(external reference voltage)
External setting mode
tpre :
0.5ms
tsoft :
2ms
tregon :
3.5ms
ton :
1ms
(1)
(2)
(3) (4)
(5)
(6)
(7)
(8) (9)
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| LV5254LG-MPB-E | 制造商:ON Semiconductor 功能描述:INVERT CHARGE PUMP - Trays |
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