AAT2848 Datasheet, PDF (5/19 Pages) Advanced Analogic Technologies – High-Current Charge Pump For Backlight Display and Flash Applications

ChargePump^TM
PRODUCT DATASHEET
AAT2848
High-Current Charge Pump For Backlight Display and Flash Applications
Electrical Characteristics¹
V_IN = 3.6V; C_IN = 4.7μF; C_OUT = 2.2μF; C1 = C2 = 1μF; R_BSET = 15kΩ; R_FSET = 14.3kΩ; C_FLTMR = 0.33μF; C_FADE = 47nF;
T_A = -40°C to +85°C, unless otherwise noted. Typical values are T_A = 25°C.
Symbol Description
BENS and FENS Logic Control
V_BENS(L),
V_FENS(L)
V_BENS(H),
V_FENS(H)
I_BENS, I_FENS
BENS, FENS Input Low Threshold Voltage
BENS, FENS Input High Threshold Voltage
BENS, FENS Input Leakage Current
t_FADE
Automatic Fade-In/Out Timer
t_FLASH
t_BENS(LOW),
t_FENS(LOW)
t , _{BENS(HI_MIN)}
t_{FENS(HI_MIN)}
t , _{BENS(HI_MAX)}
t_{FENS(HI_MAX)}
t_BENS(OFF),
t_FENS(OFF)
t_BENS(LAT),
t_FENS(LAT)
Automatic Flash Disable Time
BENS, FENS Low Time
Minimum BENS, FENS High Time
Maximum BENS, FENS High Time
BENS, FENS Off Timeout
BENS, FENS Latch Timeout
Conditions
V_BENS = V_FENS = V_IN = 5V
BENS Transition High-to-Low or Low-to-
High; DATA1
FENS Transition Low-to-High
Min Typ Max Units
0.4
V
1.4
V
-1
1
μA
2.7
s
1.3
s
0.3
75
μs
50
ns
75
μs
500
μs
500
μs
2848.2008.05.1.0
www.analogictech.com
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