SI9176 Datasheet, PDF (10/12 Pages) Vishay Siliconix – High Performance Step-Down DC-DC Converter With Adjustable Output Voltage

Si9176
Vishay Siliconix
New Product
TYPICAL WAVEFORMS (V_IN = 3.6 V, V_OUT = 1.9 V)
PWM Mode Heavy-Load Switching Waveforms,
I_OUT = 600 mA, MODE = HIGH
PWM Mode Medium-Load Switching Waveforms,
I_OUT = 300 mA, MODE = HIGH
V_LX, 5 V/div
Inductor Current
500 mA/div
V_LX, 5 V/div
Inductor Current
500 mA/div
V_OUT
(AC-Coupled)
10 mV/div
200 nS/div
PWM Mode Light-Load Switching Waveforms,
I_OUT = 0 mA, MODE = HIGH
V_OUT
(AC-Coupled)
10 mV/div
200 nS/div
PSM Mode Light-Load Switching Waveforms,
I_OUT = 150 mA, MODE = OPEN
V_LX, 5 V/div
V_LX, 5 V/div
200 nS/div
Inductor Current
200 mA/div
V_OUT
(AC-Coupled)
10 mV/div
PSM Mode Light-Load Switching Waveforms,
I_OUT = 30 mA, MODE = OPEN
1.0 mS/div
Inductor Current
200 mA/div
V_OUT
(AC-Coupled)
100 mV/div
www.vishay.com
10
2.0 mS/div
V_LX, 5 V/div
Inductor Current
200 mA/div
V_OUT
(AC-Coupled)
100 mV/div
Document Number: 71753
S-21825—Rev. A, 07-Oct-02