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| AAT2846 Datasheet, PDF (6/25 Pages) Advanced Analogic Technologies – High Current Charge Pump with Dual LDO for Backlight and Flash Applications | |||
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AAT2846
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
ENS, FEN Logic Control (continued)
tENS(OFF),
tFEN(OFF)
ENS, FEN Off Timeout
tENS(LAT), ENS, FEN Serial Interface
tFEN(LAT) Latch Timeout
Linear Regulators
VFBA, VFBB Feedback Voltage Tolerance
IIN
Ground Pin Current
IOUTA(MAX),
IOUTB(MAX)
VOUTA(DO),
VOUTB(DO)
PSRRA,
PSRRB
VEN_(L)
VEN_(H)
tEN_(DLY)
OUTA, OUTB Maximum Load
Current
OUTA, OUTB Dropout Voltage
OUTA, OUTB Power Supply
Rejection Ratio
ENA, ENB Voltage Low Threshold
ENA, ENB Voltage High Threshold
ENA, ENB Enable Delay
Conditions
IOUT = 1mA to 200mA
ENA = ENB = IN, ENS = AGND
ENA = IN, ENB = AGND or ENA =
AGND, ENB = IN, ENS = AGND
IOUT = 150mA
IOUT = 10mA, CREF = 10nF, 1kHz
REF = Open
Min Typ Max Units
500 µs
500 µs
1.17 1.2 1.23 V
200
150 µA
200
mA
150 300 mV
50
dB
0.4
V
1.4
V
15
µs
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 correlation with statistical process controls.
6
2846.2007.08.1.0
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