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AAT2860 Datasheet, PDF (4/23 Pages) Advanced Analogic Technologies – Backlight/Flash LED Driver and Multiple LDO Lighting Management Unit
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PRODUCT DATASHEET
AAT2860
ChargePumpTM Backlight/Flash LED Driver and Multiple LDO Lighting Management Unit
Electrical Characteristics1
VIN = 3.6V; CIN = 4.7µF; COUT = CLDO(A, B, C) = 2.2μF; C1 = C2 = 1µF; TA = -40°C to +85°C, unless otherwise noted.
Typical values are TA = 25°C.
Symbol Description
VIN
IN Operating Voltage Range
IIN
IN Operating Current
IIN(SHDN) IN Shutdown Current
TSD
Over-Temperature Shutdown Threshold
TSD(HYS) Over-Temperature Shutdown Hysteresis
Charge Pump Section
VIN(TH_H, BL)
BL1-BL7 Charge Pump Mode Transition
Hysteresis
VIN(TH_H, FL)
FL1-FL2 Charge Pump Mode Transition
Hysteresis
fOSC
Charge Pump Oscillator Frequency
tCP(SS) Charge Pump Soft-start Time
BL1-BL5, BL6/FL1, BL7/FL2 LED Drivers
tLED(SU) LED Output Current Start-up Time
IBLx
IBL_(DAT-
A7DH)
ΔI(BLx)/
IBL(AVG)
VBL_(TH)
BL1-BL7 Current Accuracy
BL1-BL7 Current Accuracy
BL1-BL7 Current Matching2
BL1-BL7 Charge Pump Transition Threshold
tFADE
BL1-BL7 Automatic Fade Out Timer
IFL[1/2] FL1, FL2 Current Accuracy, -4 Option
IFL[1/2] FL1, FL2 Current Accuracy, -4 Option
IFL2
FL2 Current Accuracy, -2 and -3 Options
IFL2
FL2 Current Accuracy, -2 and -3 Options
Conditions
LED_SEL = IN, LDO_SEL = FL_LVL =
AGND; ADDR = 02H, DATA = 4CH
2X Mode; LED_SEL = IN, FL_LVL = LDO_
SEL = AGND; BL1-BL7 = OPEN
2X Mode; LED_SEL = IN, FL_LVL = IN;
LDO_SEL = AGND; FL1-FL2 = OPEN
LED_SEL = FL_LVL = AGND, LDO_SEL =
IN; ADDR = 01H; DATA = 0EH; No Load
LED_SEL, LDO_SEL, FL_LVL = AGND
LED_SEL = IN, ADDR = 02H, DATA = 6CH;
FL_LVL = AGND, LDO_SEL = AGND
TA = 25°C
TA = 25°C
OUT: 0V to IN
LED_SEL = IN, ADDR=02H, DATA=6CH;
VIN – VF = 1V; FL_LVL = LDO_SEL = AGND
LED_SEL = IN, ADDR=02H, DATA=7DH;
VIN – VF = 1V; FL_LVL = LDO_SEL = AGND
LED_SEL = IN, ADDR=02H, DATA=6CH;
VIN – VF = 1V; FL_LVL = LDO_SEL = AGND
LED_SEL = IN, ADDR=02H, DATA=60H,
VIN – VF = 1V; FL_LVL = LDO_SEL = AGND
LED_SEL = IN, ADDR=02H, DATA=6CH;
VIN – VF = 1V; FL_LVL = LDO_SEL = AGND
LED_SEL = FL_LVL = IN, ADDR=04H,
DATA=03H; VIN - VF = 1V, LDO_SEL =
AGND
LED_SEL = FL_LVL = IN, ADDR = 04H,
DATA=60H; VIN - VF = 1V, LDO_SEL =
AGND
LED_SEL = FL_LVL = IN, ADDR = 04H,
DATA=03H; VIN - VF = 1V, LDO_SEL=
AGND
LED_SEL = FL_LVL = IN, ADDR = 04H,
DATA=60H; VIN - VF = 1V, LDO_SEL =
AGND
Min Typ Max Units
2.7
5.5
V
0.65 mA
5.5
mA
5.5
mA
220
µA
1.0
µA
140
˚C
15
˚C
0.15
1
1
100
V
V
MHz
µs
20
µs
27 30 33
mA
2.55 3 3.45 mA
3
%
0.18
V
1
s
270 300 330 mA
54 60 66
mA
540 600 660 mA
108 120 132 mA
1. The AAT2860 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.
2. Current matching is defined as the deviation of any sink/channel current from the average of all active channels.
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2860.2008.05.1.0
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