PRODUCT DATASHEET
AAT2846
ChargePumpTM High Current Charge Pump with Dual LDO for Backlight and Flash Applications
Electrical Characteristics1
VIN = 3.6V; CIN = 4.7µF; COUT = 2.2µF; C1 = C2 = 1µF; RFSET = 280kΩ; TA = -40°C to +85°C, unless otherwise noted.
Typical values are TA = 25°C.
Symbol Description
Linear Regulators
Conditions
Min
Typ
Max
Units
IOUT = 1mA to 200mA
ENA = ENB = IN, ENS = AGND
1.17
1.2
1.23
200
V
VFBA, VFBB Feedback Voltage Tolerance
IOUTA(MAX)
IOUTB(MAX)
VOUTA(DO)
VOUTB(DO)
PSRRA,
PSRRB
,
OUTA, OUTB Maximum Load Current
OUTA, OUTB Dropout Voltage
200
mA
mV
dB
,
IOUT = 150mA
150
50
300
0.4
OUTA, OUTB Power Supply Rejection Ratio
IOUT = 10mA, CREF = 10nF, 1kHz
VEN
ENA, ENB Voltage Low Threshold
ENA, ENB Voltage High Threshold
ENA, ENB Enable Delay
V
V
µs
_
(L)
VEN
tEN
1.4
_
(H)
REF = Open
15
_
(DLY)
1. The AAT2846 is guaranteed to meet performance specifications over the -40°C to +85°C operating temperature range and is assured by design, characterization, and correla-
tion with statistical process controls.
w w w . a n a l o g i c t e c h . c o m
2846.2008.03.1.1
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ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
