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
Min
2.7
EN = IN, I
D1
= I
D2
= I
D3
=
OFF (WLED Test Mode)
EN = IN, I
D1
= I
D2
= I
D3
= FS
Operating, I
D1
= I
D2
= I
D3
=
OPEN; IN = 5V
EN/SET or EN/PWM = GND
100
0.9
115
150
19.6
±3
1.3
1.3
2.5
150
Typ
Max
5.5
5
1.5
4.5
1
Units
V
mA
mA
mA
μA
mA
MHz
mV
μs
mA
%
mA
mA
mA
mV
Input Power Supply
IN
Input Voltage Range
I
IN
Input Operating Current
I
IN(SHDN)
Input Shutdown Current
Charge Pump Section
I
OUT
OUT Maximum Output Current
f
OSC
Charge Pump Oscillator Frequency
V
IN_(TH)
Charge Pump Mode Hysteresis
t
OUT
Output Start-Up Time
AAT3192/93-1/-2/-4: LED Current Sink Outputs
I
D_(MAX)
D1 - D3 Current Accuracy
ΔI
D_(MAX)
D1 - D3 Current Matching
D1 - D3 Current Accuracy
I
D_(DATA15)
(AAT3192/93-1 only)
D1 - D3 Current Accuracy
I
D_(DATA8)
(AAT3192/93-2 only)
D1 - D3 Current Accuracy
I
D_(10%)
(AAT3192/93-4 only)
D1- D3 Charge Pump Mode
V
D_(TH)
Transition Threshold
0.65
I
D1
= I
D2
= I
D3
= 20mA
EN/SET or EN/PWM = IN
DATA = 1; V
IN
- V
F
= 1.5V
DATA = 1; V
IN
- V
F
= 1.5V
DATA = 15; V
IN
- V
F
= 1.5V
DATA = 8; V
IN
- V
F
= 1.5V
DC = 10%; V
IN
- V
F
= 1.5V
I
D1
= I
D2
= I
D3
= 20mA
17.6
1.15
250
21.6
1.0
1.0
1.56
1.56
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.
4
3193.2007.05.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
