SI786 Datasheet, PDF (5/14 Pages) Vishay Siliconix – Dual-Output Power-Supply Controller

Si786
Vishay Siliconix
TYPICAL CHARACTERISTICS (25_C UNLESS NOTED)
Shutdown Supply Current vs. Supply Voltage
100
1.0
SHDN = 0 V
0.8
75
0.6
50
0.4
25
0.2
Minimum V_IN to V_OUT Differential
vs. 5-V Output Current
5-V Output
Still Regulating
300 kHz
200 kHz
0
0
6
12
18
24
30
Supply Voltage (V)
0.0
0.001
0.01
0.1
1
10
5-V Output Current (A)
1000.0
Switching Frequency vs. Load Current
SYNC = REF (300 kHz)
ON₃ = ON₅ = 5 V
100.0
Pulse-Skipping Waveforms
10.0
5 V, V+ = 30 V
5 V, V+ = 7.5 V
1.0
3.3 V, V+ = 7.5 V
0.1
0.1
1
10
100
Load Current (mA)
1000
Pulse-Width Modulation Mode Waveforms
5-V Output
50 mV/div
LX 10 V/div
200 mS/div
I_Load = 100 mA
V_IN = 10 V
Document Number: 70189
S-40807—Rev. J, 26-Apr-04
2 V/div
500 ns/div
5-V Output Current = 1 A
V_IN = 16 V
5-V Output
50 mV/div
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