AAT3192/93
Low-Cost, 2-/3-Channel
Charge-Pump LED Drivers
Electrical Characteristics
1
IN = EN = 3.6V; C
IN
= 1µF; C
OUT
= 1µF; C
CP
= 1µF; R
SET
= 14.3kΩ; T
A
=-40°C to 85°C unless otherwise noted.
Typical values are at T
A
= 25°C.
Symbol
Description
Conditions
R
SET
= 10.7kΩ; DATA = 1;
V
IN
- V
F
= 1.5V
R
SET
= 10.7 kΩ; DATA = 1;
V
IN
- V
F
= 1.5V
R
SET
= 10.7kΩ; DATA = 4;
V
IN
- V
F
= 1.5V
R
SET
= 10.7kΩ;
I
D1
= I
D2
= I
D3
= 20mA
Min
Typ
Max
Units
AAT3192/93-3: LED Current Sink Outputs
I
D_(MAX)
ΔI
D_(MAX)
I
D_(DATA4)
V
D_(TH)
D1 - D3 Current Accuracy
D1 - D3 Current Matching
D1 - D3 Current Accuracy
17.6
19.6
±3
0.72
0.9
150
1.1
21.6
mA
%
mA
mV
D1- D3 Charge Pump Mode
Transition Threshold
AAT3192/93-1/-2/-3: EN/SET and S
2
Cwire Control
V
ENH
EN Input High Threshold Voltage
V
ENL
EN Input Low Threshold Voltage
I
EN(LKG)
EN Input Leakage Current
t
EN/SET(OFF)
EN/SET Input OFF Timeout
t
EN/SET(LAT)
EN/SET Input Latch Timeout
t
EN/SET(LOW)
EN/SET Input LOW Time
t
ENSET(H-MIN)
EN/SET Minimum High Time
t
ENSET(H-MAX)
EN/SET Maximum High Time
AAT3192/93-4: EN/PWM Current Control
V
ENH
EN/PWM Input High Threshold Voltage
V
ENL
EN/PWM Input Low Threshold Voltage
I
EN(LKG)
EN/PWM Input Leakage Current
t
PWM(ON)
PWM Control Turn-on Delay
t
EN/PWM
EN/PWM Input OFF Timeout
f
PWM
PWM Control Frequency
1.4
EN/SET = IN = 5V
-1
0.4
1
500
500
75
50
75
1.4
EN/PWM = IN = 5V
-1
2
0.15
Duty Cycle = 80%
1
50
0.4
1
0.3
V
V
μA
µs
µs
µs
ns
µs
V
V
μA
µs
ms
kHz
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 ]
