PRODUCT DATASHEET
AAT3195
ChargePump
TM
4-Channel Charge-Pump LED Driver
Electrical Characteristics
IN = EN = 3.6V; C
IN
= 1μF; C
OUT
= 1μF; C
CP
= 1μF; 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/SET or EN/PWM = IN; VD1 = VD2 = VD3
= VD4 = IN, excluding ID1-ID4
EN/SET or EN/PWM = IN; ID1 = ID2 = ID3 =
ID4 = FS, excluding ID1-ID4; V
IN
– V
F
= 1.5V
Operating, ID1 = ID2 = ID3 = ID4 = FS; D1,
D2, D3 and D4 = OPEN
IN = 5.5V; EN/SET or EN/PWM = GND
150
0.9
225
150
150
27
18
30
20
±3
1.672
1.144
1.9
1.3
2.4
250
170
2.128
1.456
33
22
Typ
Max
5.5
0.6
3.5
7
1
Units
V
mA
mA
mA
μA
mA
MHz
mV
mV
μs
mA
mA
%
mA
mA
mA
mV
mV
AAT3195-1/-2/-3 Input Power Supply
Input Voltage Range
IN
I
IN
Input Operating Current
I
IN(SHDN)
Input Shutdown Current
Charge Pump Section
I
OUT
Maximum Output Current
f
OSC
Charge Pump Oscillator Frequency
Charge Pump Mode Hysteresis
(AAT3195-1 only)
V
IN_(TH)
Charge Pump Mode Hysteresis
(AAT3195-2 only)
t
OUT
Output Start-Up Time
AAT3195-1/-2/-3: LED Current Sink Outputs
D1 – D4 Current Accuracy
(AAT3195-1 only)
I
D_(MAX)
D1 – D4 Current Accuracy
(AAT3195-2 only)
ΔI
D_(MAX)
I
D_(DATA30)
D1 – D4 Current Matching
D1 – D4 Current Accuracy
(AAT3195-1 only)
D1 – D4 Current Accuracy
(AAT3195-2 only)
D1 – D4 Current Accuracy
(AAT3195-3 only)
D1- D4 Charge Pump Mode Transition
Threshold (AAT3195-1 only)
D1- D4 Charge Pump Mode Transition
Threshold (AAT3195-3 only)
0.65
ID1 = ID2 = ID3 = ID4 = 30mA
ID1 = ID2 = ID3 = ID4 = 20mA
EN/SET or EN/PWM
≥
V
ENH
DATA = 1; V
IN
- V
F
= 1.5V
DATA = 1; V
IN
- V
F
= 1.5V
DATA = 1; V
IN
- V
F
= 1.5V
DATA = 30; V
IN
- V
F
= 1.5V
DATA = 30; V
IN
- V
F
= 1.5V
DC = 10%; f
PWM
= 10kHz; V
IN
- V
F
= 1.5V
ID1 = ID2 = ID3 = ID4 = 30mA
ID1 = ID2 = ID3 = ID4 = 20mA
1.15
I
D_(10%)
V
D_(TH)
4
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3195.2009.06.1.3
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