PRODUCT DATASHEET
AAT3104178
TM
ChargePump
Low Cost 1x/2x 4 Channel Charge Pump WLED Driver
Electrical Characteristics1
IN = EN = 3.6V, CIN = 1ꢀF, COUT = 1ꢀF, C1 = 1ꢀF, 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
VIN
Iq
Input Voltage Range
Quiescent Current
2.7
5.5
V
mA
IN = 5.5V, EN = IN, VD1 = VD2 = VD3 = 0V
6
IN = 5.5V, EN = IN, ID1 = ID2 = ID3 = ID4
= FS, VD1 = VD2 = VD3 = VD4 = IN – 1.5V,
Exclude IDN current, 1x mode
Operating, ID1 = ID2 = ID3 = ID4 = OPEN,
2x mode
3.5
mA
IIN
No Load Operating Current
Input Shutdown Current
6
mA
IIN(SHDN)
EN/SET = GND
1
μA
Charge Pump Section
IOUT
VOUT
OUT Maximum Output Current
Charge Pump Output Voltage
150
5
mA
V
When charge pump is on
fOSC
VIN_(TH)
tOUT
Charge Pump Oscillator Frequency
Charge Pump Mode Hysteresis
LED Output Current Start-up Time
0.6
27
0.8
150
190
1.05
250
MHz
mV
μs
ID1 = ID2 = ID3 = ID4 =30mA
EN/SET =IN
AAT3104-1/-2: LED Current Source Outputs
D1 – D4 Current Accuracy
(AAT3104-1 only)
D1 – D4 Current Accuracy
(AAT3104-2 only)
D1 – D4 Current Matching
D1 – D4 Current Accuracy
(AAT3104-1 only)
D1 – D4 Current Accuracy
(AAT3104-2 only)
ID_(MAX)
DATA = 1, VIN – VF = 1.5V
30
31
33
mA
ID_(MAX)
DATA = 1, VIN – VF = 1.5V
DATA = 1, VIN – VF = 1.5V
DATA = 15, VIN – VF = 1.5V
28
-3
34
+3
2.4
mA
%
ΔID_(MAX)
ID_(DATA15)
1.6
2.0
2.0
mA
ID_(DATA29)
DATA = 29, VIN – VF = 1.5V
1.6
2.4
mA
mV
mV
ID1 = ID2 = ID3 = ID4 = 30mA, VIN – VD1 is
measured
ID1 = ID2 = ID3 = ID4 = 20mA, VIN – VD1 is
measured
380
350
D1- D4 Charge Pump Mode Transition
Threshold
VD_(TH)
AAT3104-1/-2: EN/SET and S2Cwire Control
VENH
VENL
IEN(LKG)
EN/SET Input High Threshold Voltage
EN/SET Input Low Threshold Voltage
EN/SET Input Leakage Current
1.4
-1
V
V
0.4
1
500
500
75
EN/SET = IN = 5V
μA
ꢀs
ꢀs
ꢀs
ns
ꢀs
tEN/SET(OFF) EN/SET Input OFF Timeout
tEN/SET(LAT) EN/SET Input Latch Timeout
tEN/SET(LOW) EN/SET Input Low Time
tENSET(H-MIN) EN/SET Minimum High Time
tENSET(H-MAX) EN/SET Maximum High Time
0.3
50
75
1. The AAT3104 is 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.
w w w . a n a l o g i c t e c h . c o m
4
3104.2008.09.1.0
ANALOGICTECH [ ADVANCED ANALOGIC TECHNOLOGIES ]
