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
AAT3192-3: LED Current Sink Outputs
ID_(MAX)
ΔID_(MAX)
ID_(DATA4)
D1 - D2 Current Accuracy
D1 - D2 Current Matching
D1 - D2 Current Accuracy
RSET = 11.5kΩ; DATA = 1; VIN - VF = 1.5V
RSET = 11.5kΩ; DATA = 1; VIN - VF = 1.5V
RSET = 11.5kΩ; DATA = 4; VIN - VF = 1.5V
18
20
±3
0.9
22
mA
%
mA
0.72
1.1
D1 - D2 Charge Pump Mode Transition
Threshold
VD_(TH)
RSET = 11.5kΩ; ID1 = ID2 = 20mA
125
mV
AAT3192-1/-2/-3: EN/SET and S2Cwire Control
VENH
VENL
IEN(LKG)
tEN/SET(OFF)
tEN/SET(LAT)
tEN/SET(LOW)
tENSET(H-MIN)
tENSET(H-MAX)
EN Input High Threshold Voltage
EN Input Low Threshold Voltage
EN Input Leakage Current
EN/SET Input OFF Timeout
EN/SET Input Latch Timeout
EN/SET Input LOW Time
1.4
-1
V
V
0.4
1
500
500
75
EN/SET = IN = 5V
μA
ꢀs
ꢀs
ꢀs
ns
ꢀs
0.3
EN/SET Minimum High Time
EN/SET Maximum High Time
50
75
AAT3192-4: EN/PWM Current Control
VENH
VENL
IEN(LKG)
tPWM(ON)
tEN/PWM
fPWM
EN/PWM Input High Threshold Voltage
1.4
-1
V
V
μA
ꢀs
ms
kHz
EN/PWM Input Low Threshold Voltage
EN/PWM Input Leakage Current
PWM Control Turn-on Delay
EN/PWM Input OFF Timeout
PWM Control Frequency
0.4
1
EN/PWM = IN = 5V
Duty Cycle = 80%
2
0.15
1
50
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
3192.2008.07.1.3
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
