PRODUCT DATASHEET
AAT3103
ChargePumpTM
3-Channel Charge-Pump LED Driver
Electrical Characteristics1
IN = EN = 3.6V; CIN = 1ꢀF; COUT = 1ꢀF; CCP = 1ꢀF; RSET = 14.3kΩ; TA=-40°C to 85°C unless otherwise noted. Typical
values are at TA = 25°C.
Symbol Description
Input Power Supply
Conditions
Min Typ Max Units
IN
Input Voltage Range
2.7
5.5
10
V
IN = 5.5V; EN = IN; VD1 = VD2 = VD3 = 0V
IN = 5.5V; EN = IN; ID1 = ID2 = ID3 = FS,
excluding ID1-ID3; VD1 = VD2 = VD3 = IN – 1.5V
Operating, ID1 = ID2 = ID3 = OPEN
EN/SET or EN/PWM = GND
7.4
1.9
4
IIN
Input Operating Current
Input Shutdown Current
3
mA
μA
6.8
1
IIN(SHDN)
Charge Pump Section
IOUT
fOSC
VIN_(TH)
tOUT
OUT Maximum Output Current
100
0.9
325
150
mA
MHz
mV
μs
Charge Pump Oscillator Frequency
Charge Pump Mode Hysteresis
LED Output Current Start-up Time
0.65
18
1.4
ID1 = ID2 = ID3 = 20mA
EN/SET or EN/PWM = IN
AAT3103-1/-2/-4: LED Current Source Outputs
ID_(MAX)
ΔID_(MAX)
D1 - D3 Current Accuracy
D1 - D3 Current Matching
DATA = 1; VIN – VF = 1.5V.
DATA = 1; VIN – VF = 1.5V
20
±3
22
mA
%
D1 - D3 Current Accuracy
(AAT3103-1 only)
D1 - D3 Current Accuracy
(AAT3103-2 only)
D1 - D3 Current Accuracy
(AAT3103-4 only)
D1- D3 Charge Pump Mode
Transition Threshold
ID_(DATA15)
ID_(DATA8)
ID_(10%)
DATA = 15; VIN – VF = 1.5V
DATA = 8; VIN – VF = 1.5V
DC = 10%; VIN – VF = 1.5V
ID1 = ID2 = ID3 = 20mA
1.0
1.0
1.34
1.34
2.5
1.61
1.61
mA
mA
mA
VD_(TH)
VSET
280
mV
V
RSET Pin Voltage
1.14
1.4
-1
1.18
1.22
AAT3103-1/-2: EN/SET and S2Cwire Control
VENH
VENL
IEN(LKG)
tEN/SET(OFF)
tEN/SET(LAT)
EN/SET Input High Threshold Voltage
EN/SET Input Low Threshold Voltage
EN/SET Input Leakage Current
EN/SET Input OFF Timeout
V
V
0.4
1
500
500
75
EN/SET = IN = 5V
μA
ꢀs
ꢀs
ꢀs
ns
ꢀs
EN/SET Input Latch Timeout
tEN/SET(LOW) EN/SET Input Low Time
0.3
tENSET(H-MIN) EN/SET Minimum High Time
tENSET(H-MAX) EN/SET Maximum High Time
AAT3103-4: EN/PWM Current Control
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
ꢀs
ms
kHz
0.4
1
EN/PWM = IN = 5V
Duty cycle = 80%
110
0.15
1
50
1. The AAT3103 is guaranteed to meet performance specifications over the -40°C to 85°C operating temperature range and is assured by design, characterization and correlation
with statistical process controls.
w w w . a n a l o g i c t e c h . c o m
4
3103.2008.03.1.0
AAT [ ADVANCED ANALOG TECHNOLOGY, INC. ]
