SGM3735 Datasheet, PDF (5/13 Pages) SG Micro Corp – 38V Step-Up LED Driver

SGM3735
38V Step-Up LED Driver
TYPICAL PERFORMANCE CHARACTERISTICS
T_A = +25℃, L = 10μH, C_IN = 10μF, C_OUT = 0.47μF, unless otherwise noted.
Feedback Voltage vs. Temperature
215
210 ^{VIN = 3.6V}
205
200
195
190
185
-50 -25
0
25 50
Temperature (℃)
75 100
215
210
205
200
195
190
185
2.5
Feedback Voltage vs. Input Voltage
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Efficiency vs. Input Voltage
90
I_LED = 20mA, L = 10μH
88
86
84
82
10 LEDs
80
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Efficiency vs. Input Voltage
90
I_LED = 20mA, L = 22μH
88
86
84
82
10 LEDs
80
2.5
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Efficiency vs. Output Current
100
V_IN = 3.6V, L = 10μH
90
80
70
60
50
0
10 LEDs
5
10 15 20 25 30
Output Current (mA)
Switching Waveform
V_SW
AC Coupled
V_OUT
I_L
V_IN = 3.6V, I_LED = 20mA, L=10μH, 8 LEDs
Time (1μs/div)
5
SG Micro Corp
www.sg-micro.com