PRODUCT DATASHEET
AAT2861
TM
ChargePump
Backlight/Flash LED Driver and Multiple LDO Lighting Management Unit
Electrical Characteristics (continued)1
VIN = 3.6V; CIN = COUT = 2.2ꢀF; 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
Linear Regulators
ILDO = 1mA to 200mA; TA = 25°C -1.5
1.5
3.0
%
%
ΔVLDO[A/B/C]
VLDO[A/B/C]
/
LDOA, LDOB, LDOC Output Voltage Tolerance
ILDO = 1mA to 200mA;
-3.0
TA = -40°C to +85°C
ILDO[A/B/C](MAX) LDOA, LDOB, LDOC Load Current
VLDO[A/B/C](DO) LDOA, LDOB, LDOC Dropout Voltage2
200
mA
mV
VLDO[A/B/C] ≥ 3.0V; ILDO = 150mA
75
150
ΔVLDO
LDO*ΔVIN
/
LDOA, LDOB, LDOC Line Regulation
VIN = (VLDO[A/B/C] + 1V) to 5V
ILDO[A/B/C] = 10mA, 1kHz
0.09
%/V
V
PSRR[A/B/C]
ROUT_(DCHG)
EN/SET AS2Cwire and Logic Control
LDOA, LDOB, LDOC Power Supply Rejection Ratio
LDOA, LDOB, LDOC Auto-Discharge Resistance
50
20
dB
Ω
EN/SET, FL_EN, EN_LDOA, EN_LDOB/C Input High
Threshold Voltage
EN/SET, FL_EN, EN_LDOA, EN_LDOB/C Input Low
Threshold Voltage
EN/SET, FL_EN, EN_LDOA, EN_LDOB/C Input Leak-
age Current
VIH
VIL
2.7V ≤ VIN ≤ 5.5V
2.7V ≤ VIN ≤ 5.5V
EN/SET = IN = 5V
1.4
V
V
0.4
1
IIN(LKG)
-1
ꢀA
tEN/SET(OFF)
tEN/SET(LAT)
tEN/SET(LOW)
tENSET(H-MIN)
tENSET(H-MAX)
EN/SET Input OFF Timeout
EN/SET Input Latch Timeout
EN/SET Input LOW Time
EN/SET Minimum High Time
EN/SET Maximum High Time
500
500
75
μs
μs
μs
ns
μs
0.3
50
75
1. The AAT2861 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
2861.2009.02.1.2
5
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
