SGM3727 Datasheet, PDF (4/13 Pages) SG Micro Corp – High Efficiency 38V Step-Up WLED Driver

SGM3727
High Efficiency,
38V Step-Up WLED Driver
ELECTRICAL CHARACTERISTICS
(V_IN = 3.3V, V_EN = 2.8V, T_A = 25℃, unless otherwise specified.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
Input Voltage
V_IN
Power Switch Voltage Rating
2.8
5.0
V
38
V
Under-Voltage Lockout Threshold
Under-Voltage Lockout Hysteresis
VUVLO
VIN Rising
2.1
2.2
2.45
V
70
mV
Supply Current
Not Switching
Switching
0.045
0.08
mA
0.12
0.16
mA
Supply Current in Shutdown
Maximum On Time
Minimum Off Time
RSET Voltage
Switch Current Limit
Switch On Resistance
LED Switch On Resistance
Switch Leakage Current
Over-Voltage Protection Threshold
OVP Input Current
EN/SET Input Current
ISHDN
EN/SET = GND
0.2
1
µA
t_ON
V_IN = 3.5V
5
6.2
7.5
µs
t_OFF
300
420
550
ns
VRSET
300
314
330
mV
I_LIM
750
1000
1250
mA
R_DS(ON)
V_IN = 3.3V
0.5
1
Ω
VIN = 3.3V (from FB to RSET)
2.2
Ω
VSW = 38V, EN/SET = GND
0.1
µA
V_OVP Rising
1.1
1.24
1.31
V
V_OVP = 1.5V
1
300
nA
VEN = 0V or 2.8V
0.1
1
µA
Thermal Shutdown Temperature
155
℃
Thermal Shutdown Hysteresis
25
℃
EN/SET LOGIC
EN Low Time for Shutdown
EN Low Time for Dimming
EN High Time for Dimming
EN Threshold
Logic-High Voltage
Logic-Low Voltage
T_SHDN
TIL
T_IH
V_IH
VIL
3
ms
0.5
500
μs
0.5
μs
1.5
V
0.5
V
SG Micro Corp
4
www.sg-micro.com