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| AAT2842 Datasheet, PDF (6/21 Pages) Advanced Analogic Technologies – High-Current Charge Pump with S2Cwire™ Control and Dual LDO for Backlight and Flash | |||
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AAT2842
High-Current Charge Pump with S2Cwireâ¢
Control and Dual LDO for Backlight and Flash
Electrical Characteristics1
VIN = 3.6V; CIN = 4.7µF; COUT = 2.2µF; C1 = C2 = 1.0µF; TA = -40°C to +85°C, unless otherwise noted. Typical
values are at TA = 25°C.
Symbol Description
Enable/Set
VBENS(L),
VFENS(L)
VBENS(H),
VFENS(H)
TBENS(L),
TFENS(L)
TBENS(H-MIN),
TFENS(H-MIN)
TBENS(H-MAX),
TFENS(H-MAX)
TBENS(OFF),
TFENS(OFF)
TBENS(LAT),
TFENS(LAT)
IBENS, IFENS
BENS, FENS Low Threshold
BENS, FENS High Threshold
BENS, FENS Low Time
BENS, FENS Minimum
High Time
BENS, FENS Maximum
High Time
BENS, FENS Off Timeout
BENS, FENS Latch Timeout
BENS, FENS Input Leakage
Current
Linear Regulators
VFBA, VFBB
IIN
IOUTA(MAX),
IOUTB(MAX)
VOUTA(DO),
VOUTB(DO)
VENL(L)
FB Voltage Tolerance
IN Operating Current
OUTA, OUTB Maximum Load
Current
OUTA, OUTB Dropout Voltage
ENL Enable Low Voltage
Threshold
VENL(H)
ENL Enable High Voltage
Threshold
tENL(DLY)
ROUTA(DCHG),
ROUTA(DCHG)
PSRRA,
PSRRB
ENL Enable Delay
OUTA, OUTB Auto-Discharge
Resistance
OUTA, OUTB Power Supply
Rejection Ratio
Conditions
VBENS or VFENS = VIN = 5V
IOUT = 1mA to 200mA
ENL = IN, BENS = FENS = AGND
IOUT = 150mA
REF = Open
IOUT =10mA, CREF = 10nF, 1kHz
Min Typ Max Units
0.4
V
1.4
V
0.3
75
µs
50
ns
75
µs
500
µs
500
µs
-1
1
µA
1.17 1.2 1.23
V
85 150
µA
200
mA
150 300 mV
0.4
V
1.4
V
15
µs
20
Ω
50
dB
1. The AAT2842 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
2842.2006.10.1.0
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