PRODUCT DATASHEET
AAT2860
TM
ChargePump
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
Conditions
Min Typ Max Units
LDO Regulators
ILDO = 1mA to 300mA; TA = 25°C
-1.5
-3
+1.5
+3
%
%
ΔVLDO[A/B/C]
VLDO[A/B/C]
/
LDOA, LDOB, LDOC Output
Voltage Tolerance
I
LDO = 1mA to 300mA; TA = -40°C to +85°C
LDOA, LDOB, LDOC Maximum
Load Current
LDOA, LDOB, LDOC Dropout
Voltage2
ILDO[A/B/C](MAX)
300
mA
mV
%/V
dB
VLDO[A/B/C](DO)
∆VLDO
VLDO[A/B/C] ≥ 2.7V; ILDO = 150mA
VIN = (VLDO[A/B/C] + 1V) to 5V
ILDO[A/B/C] =10mA, 1kHz
75
0.09
40
150
/
Line Regulation
VLDO*∆VIN
LDOA, LDOB, LDOC Power
Supply Rejection Ratio
PSRR[A/B/C]
LDOA, LDOB, LDOC Auto-
Discharge Resistance
RLDO_(DCHG)
20
Ω
I2C Logic and Control Interface
SDA, SCL, LED_SEL, FL_LVL,
LDO_SEL Input Low Threshold
SDA, SCL, LED_SEL, FL_LVL,
LDO_SEL Input High Threshold
SDA, SCL, LED_SEL, FL_LVL,
VIL
VIH
IIN
2.7V ≤ VIN ≤ 5.5V
0.4
V
V
2.7V ≤ VIN ≤ 5.5V
1.4
-1
SDA = SCL = LED_SEL = FL_LVL = LDO_SEL = 5V
1
µA
LDO_SEL Input Leakage Current
fSCL
tLOW
tHIGH
tHD_STA
tSU_STA
tSU_DAT
tHD_DAT
tSU_STO
SCL Clock Frequency
SCL Clock Low Period
SCL Clock High Period
Hold Time START Condition
Setup Time for Repeat START
SDA Data Setup Time
SDA Data HOLD Time
Setup Time for STOP Condition
0
400
kHz
µs
µs
µs
µs
ns
µs
µs
1.3
0.6
0.6
0.6
500
0.5
0.6
Bus Free Time Between STOP
and START Conditions
tBUF
1.3
µs
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. VDO[A/B/C] is defined as VIN – LDO[A/B/C] when LDO[A/B/C] is 98% of nominal.
w w w . a n a l o g i c t e c h . c o m
2860.2008.05.1.0
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