參數(shù)資料
型號： AAT3190IKS-T1
廠商： Advanced Analogic Technologies, Inc.
英文描述： Positive/Negative Charge Pump for Voltage Bias
中文描述： 正/負電荷泵電壓偏置
文件頁數(shù)： 8/16頁
文件大?。?/td> 411K
代理商： AAT3190IKS-T1
AAT3190
Positive/Negative Charge Pump for Voltage Bias
8
3190.2005.03.1.0
Functional Block Diagram
Control
UVLO
Band
Gap
Ref.
-
+
-
+
Reference
Oscillator
Over-
Temperature
Protection
DRVP
DRVN
FBP
REF
FBN
GND
IN
EN
Functional Description
Dual Charge Pump Regulators
The AAT3190 provides low-power regulated output
voltages from two individual charge pumps. Using
a single stage, the first charge pump inverts the
supply voltage (V
IN
) and provides a regulated neg-
ative output voltage. The second charge pump dou-
bles V
IN
and provides a regulated positive output
voltage. These outputs use external Schottky
diodes and capacitor multiplier stages (as many as
required) to regulate up to ±25V. Aconstant switch-
ing frequency of 1MHz minimizes the output ripple
and capacitor size.
Negative Charge Pump
During the first half-cycle, the P-channel MOSFET
turns on and the flying capacitor C7 charges to V
IN
minus a diode drop (Figure 1). During the second
half-cycle, the P-channel MOSFET turns off and
the N-channel MOSFET turns on, level shifting C7.
This connects C7 in parallel with the output reser-
voir capacitor C10. If the voltage across C10
minus a diode drop is less than the voltage across
C7, current flows from C7 to C10 until the diode
turns off.
相關(guān)PDF資料
PDF描述
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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AAT3190ITP-T1 制造商:Skyworks Solutions Inc 功能描述:ADJ POS/NEG CHPUMP, 12TSOPJW TR 制造商:Skyworks Solutions Inc 功能描述:IC REG MULTI CONFIG ADJ 12TSOPJW 制造商:Skyworks Solutions Inc 功能描述:LED DRIVER IC
AAT3191IJQ-T1 制造商:SKYWORKS SOLUTIONS INC 功能描述:DESCRIPTION: CHPMP WLED DRIVERS TR
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AAT3192_08 制造商:ANALOGICTECH 制造商全稱:Advanced Analogic Technologies 功能描述:2-Channel Charge-Pump LED Driver
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