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AAT2820IXN-5.0-T1
EEWorld咨询电话:82357002,82350740-8068 邮件咨询:datasheet@eeworld.com.cn
器件描述:Triple-Output Charge Pump Regulator
器件厂商:ANALOGICTECH [Advanced Analogic Technologies]
厂商主页:http://www.analogictech.com/
文件大小:437.39KB
文件页数:18
PDF阅读:AAT2820IXN-5.0-T1.pdf  (点击阅读器件资料)

摘要:
AAT2820
Triple-Output Charge Pump Regulator
2820.2006.04.1.4 1
ChargePump
?
General Description
The AAT2820 is a member of AnalogicTech's Total
Power Management IC? (TPMIC?) product fam-
ily. It is a triple output charge pump targeted for
active matrix thin-film transistor (TFT), liquid crys-
tal displays (LCDs), and CCD camera bias for sys-
tems operating with lithium-ion/polymer batteries.
The device generates three regulated output volt-
ages for turn-on gate drive bias (V
POS
), turn-off
gate voltage bias (V
NEG
), and logic voltage.
The V
POS
and V
NEG
output voltages are independ-
ently regulated. Both outputs use external diode
and capacitor multiplier stages (as many stages as
required) to regulate output voltages up to +25V
and -25V. An additional regulated output voltage is
provided for biasing the display module. Built-in
soft-start circuitry prevents excessive inrush current
during start-up. A high switching frequency enables
the use of very small external capacitors. A low
shutdown feature disconnects the load from V
IN
and
reduces quiescent current to less than 0.1?A.
The AAT2820 is available in a Pb-free TDFN44-16
package and is specified over the -40°C to +85°C
operating temperature range.
Features
? V
IN
Range: 2.7V to 5.5V
? 5V Regulated Output Voltage
? Two Adjustable Regulated Output Voltages:
V
POS
and V
NEG
— Positive Charge Pump Up to +25V
— Negative Charge Pump Down to -25V
— Optional Power-Up Sequence with
AAT2820-1
? Internal Power MOSFETs
? <1?A of Shutdown Current
? Internally Controlled Soft Start
? Fast Transient Response
? Ultra-Thin Solution (No Inductors)
? 16-Pin TDFN44 Package
? Temperature Range: -40°C to +85°C
Applications
? CCD Cameras
? Hand-Held Instruments
? Passive-Matrix Displays
? Personal Digital Assistants (PDAs)
? TFT Active-Matrix LCDs
Typical Application
V
POS
C
IN
V
IN
C
FLY
IN
C+ C-
DRVP
FBP
GND
FBN
REF
DRVN
C
OUT
AAT2820
V
NEG
V
OUT
OUT
EN
EN/PN
Enable (Positive and
Negative Output)
Enable

相关器件:AAT2820IXN-5.0-1-T1 AAT2820

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