SI9176 Datasheet, PDF (11/12 Pages) Vishay Siliconix – High Performance Step-Down DC-DC Converter With Adjustable Output Voltage

New Product
Si9176
Vishay Siliconix
TYPICAL START-UP AND SHUTDOWN TRANSIENT WAVEFORMS (V_IN = 3.6 V, V_OUT = 1.9 V)
Start-Up, R_LOAD = 4 Ω
Start-Up, V_IN = V_SD = 3.6 V, R_LOAD = 4 Ω
V_SD, 1 V/div
V_IN, V_SD, 1 V/div
V_OUT, 500 mV/div
V_OUT, 500 mV/div
20 mS/div
Shutdown, R_LOAD = 4 Ω
V_SD, 1 V/div
20 mS/div
Enable Switching, R_LOAD = 4 Ω
V_SD 1 V/div
200 mS/div
V_OUT, 500 mV/div
TYPICAL MODE SWITCH TRANSIENT WAVEFORM
Output Transient At Mode Switch, I_LOAD = 30 mA
20 mS/div
V_OUT
(AC-Coupled)
200 mV/div
Mode Pin
1 V/div
V_OUT, 500 mV/div
Document Number: 71753
S-21825—Rev. A, 07-Oct-02
100 mS/div
www.vishay.com
11