PRODUCT DATASHEET
AAT3192
TM
ChargePump
2-Channel Charge-Pump LED Driver
Electrical Characteristics1
IN = EN = 3.6V; CIN = 1ꢀF; COUT = 1ꢀF; CCP = 1ꢀF; RSET = 14.3kΩ; TA =-40°C to 85°C unless otherwise noted. Typical
values are at TA = 25°C.
Symbol
Description
Conditions
Min Typ Max Units
AAT3192-1/2/3/4 Input Power Supply
IN
Input Voltage Range
2.7
5.5
2.5
V
EN/SET or EN/PWM = IN; VD1 = VD2 = IN,
excluding ID1-ID2
IIN
Input Operating Current
EN/SET or EN/PWM = IN; ID1 = ID2 = FS,
excluding ID1-ID2; VIN – VF = 1.5V
Operating, ID1 = ID2 = FS; D1 and D2 = OPEN
IN = 5.5V; EN/SET or EN/PWM = GND
mA
μA
2.5
7.0
1
IIN(SHDN)
Input Shutdown Current
Charge Pump Section
IOUT
fOSC
OUT Maximum Output Current
100
0.9
mA
MHz
Charge Pump Oscillator Frequency
Charge Pump Mode Hysteresis
Output Start-Up Time
0.65
18
1.15
250
ID1 = ID2 = 20mA; Excluding AAT3192-4,
PWM Option
EN/SET or EN/PWM = IN
VIN_(TH)
tOUT
115
150
mV
μs
AAT3192-1/-2/-4: LED Current Sink Outputs
ID_(MAX)
ΔID_(MAX)
D1 - D2 Current Accuracy
D1 - D2 Current Matching
DATA = 1; VIN - VF = 1.5V
DATA = 1; VIN - VF = 1.5V
20
±3
22
mA
%
D1 - D2 Current Accuracy
(AAT3192-1 only)
D1 - D2 Current Accuracy
(AAT3192-2 only)
D1 - D2 Current Accuracy
(AAT3192-4 only)
D1 - D2 Charge Pump Mode
Transition Threshold
ID_(DATA15)
ID_(DATA8)
ID_(10%)
VD_(TH)
DATA = 15; VIN - VF = 1.5V
DATA = 8; VIN - VF = 1.5V
DC = 10%; fPWM = 10kHz; VIN - VF = 1.5V
ID1 = ID2 = 20mA
1.0
1.0
1.3
1.3
2.4
125
1.56
1.56
mA
mA
mA
mV
1. The AAT3192 is guaranteed to meet performance specification over the -40°C to 85°C operating temperature range and is assured by design, characterization and correlation
with statistical process controls.
w w w . a n a l o g i c t e c h . c o m
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3192.2008.07.1.3
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
