AAT3192/93
Low-Cost, 2-/3-Channel
Charge-Pump LED Drivers
1
Electrical Characteristics
IN = EN = 3.6V; CIN = 1µF; COUT = 1µF; CCP = 1µF; 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
AAT3192/93-3: LED Current Sink Outputs
R
SET = 10.7kΩ; DATA = 1;
VIN - VF = 1.5V
SET = 10.7 kΩ; DATA = 1;
VIN - VF = 1.5V
SET = 10.7kΩ; DATA = 4;
ID_(MAX)
ΔID_(MAX)
ID_(DATA4)
VD_(TH)
D1 - D3 Current Accuracy
D1 - D3 Current Matching
17.6
19.6
3
21.6
1.1
mA
ꢀ
R
R
D1 - D3 Current Accuracy
D1- D3 Charge Pump Mode
0.72
0.9
150
mA
mV
VIN - VF = 1.5V
RSET = 10.7kΩ;
ID1 = ID2 = ID3 = 20mA
Transition Threshold
2
AAT3192/93-1/-2/-3: EN/SET and S Cwire Control
VENH
VENL
IEN(LKG)
EN Input High Threshold Voltage
EN Input Low Threshold Voltage
EN Input Leakage Current
1.4
-1
V
V
0.4
1
500
500
75
EN/SET = IN = 5V
μA
µs
µs
µs
ns
µs
tEN/SET(OFF) EN/SET Input OFF Timeout
tEN/SET(LAT) EN/SET Input Latch Timeout
tEN/SET(LOW) EN/SET Input LOW Time
tENSET(H-MIN) EN/SET Minimum High Time
tENSET(H-MAX) EN/SET Maximum High Time
AAT3192/93-4: EN/PWM Current Control
0.3
50
75
VENH
VENL
IEN(LKG)
tPWM(ON)
tEN/PWM
fPWM
EN/PWM Input High Threshold Voltage
EN/PWM Input Low Threshold Voltage
EN/PWM Input Leakage Current
PWM Control Turn-on Delay
EN/PWM Input OFF Timeout
PWM Control Frequency
1.4
-1
V
V
μA
µs
ms
kHz
0.4
1
EN/PWM = IN = 5V
Duty Cycle = 80ꢀ
2
0.15
1
50
1. The AAT3192/93 are guaranteed to meet performance specification over the -40°C to 85°C operating temperature range and are
assured by design, characterization and correlation with statistical process controls.
3193.2007.05.1.0
5
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
