SI91871_05 Datasheet, PDF (8/10 Pages) Vishay Siliconix – 300-mA Ultra Low-Noise LDO Regulator With Discharge Option

Si91871
Vishay Siliconix
TYPICAL WAVEFORMS
Output Noise
V_OUT
200 mV/div
Noise Spectrum
10
mVń ^ǸHz
4 ms/div
V_IN = 4 V
V_OUT = 3 V
I_OUT = 150 mA
C_NOISE = 0.01 mF
BW = 10 Hz to 100 kHz
FUNCTIONAL BLOCK DIAGRAM
0.01
10 Hz
V_IN = 4 V
V_OUT = 3 V
I_LOAD = 150 mA
C_NOISE = 0.01 mF
1 MHz
V_IN
Reverse Polarity
Protection
Reference
Si91871
−
+
Thermal
Sensor
Current
Limit
SD
Shutdown
Control
BP
V_OUT
www.vishay.com
8
GND
Document Number: 72012
S-51147—Rev. F, 20-Jun-05