AAT3103 Datasheet, PDF (4/17 Pages) Advanced Analog Technology, Inc. – 3-Channel Charge-Pump LED Driver

ChargePump^TM
PRODUCT DATASHEET
AAT3103
3-Channel Charge-Pump LED Driver
Electrical Characteristics¹
IN = EN = 3.6V; C_IN = 1μF; C_OUT = 1μF; C_CP = 1μF; R_SET = 14.3kΩ; T_A=-40°C to 85°C unless otherwise noted. Typical
values are at T_A = 25°C.
Symbol Description
Conditions
Input Power Supply
IN
Input Voltage Range
I_IN
Input Operating Current
I_IN(SHDN) Input Shutdown Current
Charge Pump Section
IN = 5.5V; EN = IN; V_D1 = V_D2 = V_D3 = 0V
IN = 5.5V; EN = IN; I_D1 = I_D2 = I_D3 = FS,
excluding I_D1-I_D3; V_D1 = V_D2 = V_D3 = IN – 1.5V
Operating, I_D1 = I_D2 = I_D3 = OPEN
EN/SET or EN/PWM = GND
I_OUT
OUT Maximum Output Current
f_OSC
Charge Pump Oscillator Frequency
V_{IN_(TH)} Charge Pump Mode Hysteresis
I_D1 = I_D2 = I_D3 = 20mA
t_OUT
LED Output Current Start-up Time
EN/SET or EN/PWM = IN
AAT3103-1/-2/-4: LED Current Source Outputs
I_{D_(MAX)}
ΔI_{D_(MAX)}
I_{D_(DATA15)}
D1 - D3 Current Accuracy
D1 - D3 Current Matching
D1 - D3 Current Accuracy
(AAT3103-1 only)
DATA = 1; V_IN – V_F = 1.5V.
DATA = 1; V_IN – V_F = 1.5V
DATA = 15; V_IN – V_F = 1.5V
I_{D_(DATA8)}
D1 - D3 Current Accuracy
(AAT3103-2 only)
DATA = 8; V_IN – V_F = 1.5V
I_{D_(10%)}
D1 - D3 Current Accuracy
(AAT3103-4 only)
DC = 10%; V_IN – V_F = 1.5V
V_{D_(TH)}
D1- D3 Charge Pump Mode
Transition Threshold
I_D1 = I_D2 = I_D3 = 20mA
V_SET
R_SET Pin Voltage
AAT3103-1/-2: EN/SET and S²Cwire Control
V_ENH
EN/SET Input High Threshold Voltage
V_ENL
EN/SET Input Low Threshold Voltage
I_EN(LKG) EN/SET Input Leakage Current
t_EN/SET(OFF) EN/SET Input OFF Timeout
t_EN/SET(LAT) EN/SET Input Latch Timeout
t_EN/SET(LOW) EN/SET Input Low Time
t_ENSET(H-MIN) EN/SET Minimum High Time
t_ENSET(H-MAX) EN/SET Maximum High Time
AAT3103-4: EN/PWM Current Control
EN/SET = IN = 5V
V_ENH
V_ENL
I_EN(LKG)
t_PWM(ON)
t_EN/PWM
f_PWM
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
EN/PWM = IN = 5V
Duty cycle = 80%
Min
2.7
0.65
18
1.0
1.0
1.14
1.4
-1
0.3
1.4
-1
0.15
Typ
7.4
1.9
4
100
0.9
325
150
20
±3
1.34
1.34
2.5
280
1.18
50
110
Max
5.5
10
3
6.8
1
1.4
22
1.61
1.61
1.22
0.4
1
500
500
75
75
0.4
1
1
50
Units
V
mA
μA
mA
MHz
mV
μs
mA
%
mA
mA
mA
mV
V
V
V
μA
μs
μs
μs
ns
μs
V
V
μA
μs
ms
kHz
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.
4
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3103.2008.03.1.0