SGM3133 Datasheet, PDF (4/13 Pages) SG Micro Corp – Driver with Low Dropout Current Source

SGM3133
4-Channel Charge Pump White LED Driver
with Low Dropout Current Source
ELECTRICAL CHARACTERISTICS
(V_IN = 2.7V to 5.5V, C_IN = C_OUT = C1 = C2 = 1μF, T_A = 25℃, unless otherwise specification.)
PARAMETER
SYMBOL
CONDITIONS
MIN
Input
Input Supply Voltage
V_IN
2.7
Under-Voltage Lockout Threshold
VIN Rising
1.8
Under-Voltage Lockout Hysteresis
Quiescent Power Supply Current
Shutdown Current
I_Q
IQ
I_SHDN
1× Mode, V_IN = 4V
1.5× Mode, VIN = 3.3V
V_EN = 0.4V
1× Mode to 1.5× Mode Transition
Voltage (VIN falling)
V_{TS_×1.5}
V_F = 3.25V, I_OUT = 80mA,
ILEDx = 20mA
Hysteresis of Mode Transition
Output
Output Current
ILEDx
VIN = 3.5V, 100% Setting
18
Current Matching
V_IN = 3.5V, 100% Setting
-3
EN/SET Logic
Threshold
Logic-High Voltage
VIH
1.5
Logic-Low Voltage
V_IL
Low Time for Dimming
TLO
0.5
High Time for Dimming
THI
0.5
EN/SET
Current
High Current
Low Current
I_IH
V_IH = V_IN
IIL
VIL = GND
Low Time for Shutdown
T_SHDN
PWM Dimming
Frequency
Oscillator Frequency
fOSC
TYP
2.2
100
0.3
1
0.1
3.45
250
20
1
0.01
0.01
1.5
1000
MAX
5.5
2.5
1
2
10
22
3
0.4
500
1
1
UNITS
V
V
mV
mA
mA
μA
V
mV
mA
%
V
V
μs
μs
μA
μA
ms
kHz
SG Micro Corp
www.sg-micro.com
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