PRODUCT DATASHEET
AAT3195
TM
ChargePump
4-Channel Charge-Pump LED Driver
Electrical Characteristics
IN = EN = 3.6V; CIN = 1ꢀF; COUT = 1ꢀF; CCP = 1ꢀF; TA = -40°C to 85°C unless otherwise noted. Typical values are at
TA = 25°C.
Symbol Description
Conditions
Min
Typ Max Units
AAT3195-1/-2/-3 Input Power Supply
IN
Input Voltage Range
2.7
5.5
0.6
V
EN/SET or EN/PWM = IN; VD1 = VD2 = VD3
= VD4 = IN, excluding ID1-ID4
mA
EN/SET or EN/PWM = IN; ID1 = ID2 = ID3 =
ID4 = FS, excluding ID1-ID4; VIN – VF = 1.5V
Operating, ID1 = ID2 = ID3 = ID4 = FS; D1,
D2, D3 and D4 = OPEN
IIN
Input Operating Current
Input Shutdown Current
3.5
mA
7
1
mA
IIN(SHDN)
IN = 5.5V; EN/SET or EN/PWM = GND
μA
Charge Pump Section
IOUT
fOSC
Maximum Output Current
Charge Pump Oscillator Frequency
150
0.9
mA
MHz
0.65
1.15
Charge Pump Mode Hysteresis
(AAT3195-1 only)
Charge Pump Mode Hysteresis
(AAT3195-2 only)
ID1 = ID2 = ID3 = ID4 = 30mA
225
mV
VIN_(TH)
ID1 = ID2 = ID3 = ID4 = 20mA
150
150
mV
tOUT
Output Start-Up Time
EN/SET or EN/PWM ≥ VENH
μs
AAT3195-1/-2/-3: LED Current Sink Outputs
D1 – D4 Current Accuracy
(AAT3195-1 only)
D1 – D4 Current Accuracy
(AAT3195-2 only)
DATA = 1; VIN - VF = 1.5V
27
18
30
33
22
mA
ID_(MAX)
DATA = 1; VIN - VF = 1.5V
DATA = 1; VIN - VF = 1.5V
DATA = 30; VIN - VF = 1.5V
20
±3
1.9
mA
%
ΔID_(MAX)
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)
1.672
1.144
2.128
1.456
mA
ID_(DATA30)
DATA = 30; VIN - VF = 1.5V
1.3
2.4
mA
mA
mV
mV
ID_(10%)
DC = 10%; fPWM = 10kHz; VIN - VF = 1.5V
ID1 = ID2 = ID3 = ID4 = 30mA
ID1 = ID2 = ID3 = ID4 = 20mA
250
170
VD_(TH)
D1- D4 Charge Pump Mode Transition
Threshold (AAT3195-3 only)
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4
3195.2009.06.1.3
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