AAT3104 Datasheet, PDF (4/15 Pages) Advanced Analogic Technologies – Low Cost 1x/2x 4 Channel Charge Pump WLED Driver

ChargePump^TM
PRODUCT DATASHEET
AAT3104178
Low Cost 1x/2x 4 Channel Charge Pump WLED Driver
Electrical Characteristics¹
IN = EN = 3.6V, C_IN = 1μF, C_OUT = 1μF, C₁ = 1μF, T_A = -40°C to 85°C unless otherwise noted. Typical values are at T_A
= 25°C.
Symbol Description
Input Power Supply
V_IN
Input Voltage Range
I_q
Quiescent Current
I_IN
No Load Operating Current
I_IN(SHDN) Input Shutdown Current
Charge Pump Section
I_OUT
OUT Maximum Output Current
V_OUT
Charge Pump Output Voltage
f_OSC
Charge Pump Oscillator Frequency
V_{IN_(TH)} Charge Pump Mode Hysteresis
t_OUT
LED Output Current Start-up Time
AAT3104-1/-2: LED Current Source Outputs
I_{D_(MAX)}
D1 – D4 Current Accuracy
(AAT3104-1 only)
I_{D_(MAX)}
D1 – D4 Current Accuracy
(AAT3104-2 only)
ΔI_{D_(MAX)}
I_{D_(DATA15)}
D1 – D4 Current Matching
D1 – D4 Current Accuracy
(AAT3104-1 only)
I_{D_(DATA29)}
D1 – D4 Current Accuracy
(AAT3104-2 only)
V_{D_(TH)}
D1- D4 Charge Pump Mode Transition
Threshold
AAT3104-1/-2: EN/SET and S²Cwire Control
V_ENH
V_ENL
I_EN(LKG)
t_EN/SET(OFF)
t_EN/SET(LAT)
t_EN/SET(LOW)
t_ENSET(H-MIN)
t_ENSET(H-MAX)
EN/SET Input High Threshold Voltage
EN/SET Input Low Threshold Voltage
EN/SET Input Leakage Current
EN/SET Input OFF Timeout
EN/SET Input Latch Timeout
EN/SET Input Low Time
EN/SET Minimum High Time
EN/SET Maximum High Time
Conditions
Min Typ Max
2.7
5.5
IN = 5.5V, EN = IN, V_D1 = V_D2 = V_D3 = 0V
6
IN = 5.5V, EN = IN, I_D1 = I_D2 = I_D3 = I_D4
= FS, V_D1 = V_D2 = V_D3 = V_D4 = IN – 1.5V,
3.5
Exclude I_DN current, 1x mode
Operating, I_D1 = I_D2 = I_D3 = I_D4 = OPEN,
2x mode
6
EN/SET = GND
1
When charge pump is on
I_D1 = I_D2 = I_D3 = I_D4 =30mA
EN/SET =IN
150
5
0.6 0.8 1.05
150 250
190
DATA = 1, V_IN – V_F = 1.5V
27 30
33
DATA = 1, V_IN – V_F = 1.5V
DATA = 1, V_IN – V_F = 1.5V
DATA = 15, V_IN – V_F = 1.5V
28 31
34
-3
+3
1.6 2.0 2.4
DATA = 29, V_IN – V_F = 1.5V
1.6 2.0 2.4
I_D1 = I_D2 = I_D3 = I_D4 = 30mA, V_IN – V_D1 is
measured
I_D1 = I_D2 = I_D3 = I_D4 = 20mA, V_IN – V_D1 is
measured
380
350
EN/SET = IN = 5V
1.4
0.4
-1
1
500
500
0.3
75
50
75
Units
V
mA
mA
mA
μA
mA
V
MHz
mV
μs
mA
mA
%
mA
mA
mV
mV
V
V
μA
μs
μs
μs
ns
μs
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.
4
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3104.2008.09.1.0