PRODUCT DATASHEET
AAT2860
ChargePump
TM
Backlight/Flash LED Driver and Multiple LDO Lighting Management Unit
Electrical Characteristics
1
V
IN
= 3.6V; C
IN
= 4.7µF; C
OUT
= C
LDO(A, B, C)
= 2.2μF; C1 = C2 = 1µF; T
A
= -40°C to +85°C, unless otherwise noted.
Typical values are T
A
= 25°C.
Symbol
V
IN
Description
IN Operating Voltage Range
Conditions
LED_SEL = IN, LDO_SEL = FL_LVL =
AGND; ADDR = 02
H
, DATA = 4C
H
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 = 01
H
; DATA = 0E
H
; No Load
LED_SEL, LDO_SEL, FL_LVL = AGND
Min
2.7
Typ
Max
5.5
0.65
5.5
5.5
220
1.0
Units
V
mA
mA
mA
µA
µA
˚C
˚C
V
V
MHz
µs
µs
I
IN
IN Operating Current
I
IN(SHDN)
IN Shutdown Current
Over-Temperature Shutdown Threshold
T
SD
T
SD(HYS)
Over-Temperature Shutdown Hysteresis
Charge Pump Section
BL1-BL7 Charge Pump Mode Transition
V
IN(TH_H, BL)
Hysteresis
FL1-FL2 Charge Pump Mode Transition
V
IN(TH_H, FL)
Hysteresis
Charge Pump Oscillator Frequency
f
OSC
t
CP(SS)
Charge Pump Soft-start Time
BL1-BL5, BL6/FL1, BL7/FL2 LED Drivers
t
LED(SU)
I
BLx
I
BL_(DAT-
A7DH)
140
15
LED_SEL = IN, ADDR = 02
H
, DATA = 6C
H
;
FL_LVL = AGND, LDO_SEL = AGND
0.15
1
T
A
= 25°C
T
A
= 25°C
OUT: 0V to IN
LED_SEL = IN, ADDR=02
H
, DATA=6C
H
;
V
IN
– V
F
= 1V; FL_LVL = LDO_SEL = AGND
LED_SEL = IN, ADDR=02
H
, DATA=7D
H
;
V
IN
– V
F
= 1V; FL_LVL = LDO_SEL = AGND
LED_SEL = IN, ADDR=02
H
, DATA=6C
H
;
V
IN
– V
F
= 1V; FL_LVL = LDO_SEL = AGND
LED_SEL = IN, ADDR=02
H
, DATA=60
H
,
V
IN
– V
F
= 1V; FL_LVL = LDO_SEL = AGND
LED_SEL = IN, ADDR=02
H
, DATA=6C
H
;
V
IN
– V
F
= 1V; FL_LVL = LDO_SEL = AGND
LED_SEL = FL_LVL = IN, ADDR=04H,
DATA=03H; V
IN
- V
F
= 1V, LDO_SEL =
AGND
LED_SEL = FL_LVL = IN, ADDR = 04H,
DATA=60H; V
IN
- V
F
= 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
27
2.55
1
100
20
30
3
3
0.18
1
270
300
330
33
3.45
LED Output Current Start-up Time
BL1-BL7 Current Accuracy
BL1-BL7 Current Accuracy
BL1-BL7 Current Matching
2
BL1-BL7 Charge Pump Transition Threshold
BL1-BL7 Automatic Fade Out Timer
FL1, FL2 Current Accuracy, -4 Option
mA
mA
%
V
s
mA
ΔI
(BLx)
/
I
BL(AVG)
V
BL_(TH)
t
FADE
I
FL[1/2]
I
FL[1/2]
FL1, FL2 Current Accuracy, -4 Option
54
60
66
mA
I
FL2
I
FL2
FL2 Current Accuracy, -2 and -3 Options
540
600
660
mA
FL2 Current Accuracy, -2 and -3 Options
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.
4
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