SI9118_11 Datasheet, PDF (5/11 Pages) Vishay Siliconix – Programmable Duty Cycle Controller

TYPICAL CHARACTERISTICS (T_A = 25 °C, unless noted)
2 x 1000
200
47 pF
100 pF
150 pF
200 pF
150
Si9118, Si9119
Vishay Siliconix
t_r for C_L = 2500 pF
2 x 100
Note: These curves were measured
in a board with 3.5 pF of
external parasitic
capacitance.
2 x 10
10
100
r_OSC – Oscillator Resistance (k )
Oscillator Frequency
1000
t_f for C_L = 2500 pF
100
t_r for C_L = 1000 pF
50
t_r 10 % to 90 %
t_f 90 % to 10 %
t_f for C_L = 1000 pF
0
9 10 11 12 13 14 15 16 17
V_CC – Supply Voltage (V)
Output Driver Rise and Fall Time
36
V_CC = 12 V
32
C_OSC = 47 pF
28
24
C_L = 2500 pF
20
16
C_L = 1000 pF
12
8
C_L = 0 pF
4
0
0
200
400
600
800
1000
f_OUT – Output Frequency (kHz)
Supply Current vs. Output Frequency
12
R_OSC = 127 k
C_OSC = 47 pF
fs = 500 kHz
9
6
C_L = 1000 pF
3
C_L = 0 pF
0
9 10 11 12 13 14 15 16 17
V_CC – Supply Voltage (V)
Supply Current vs. Supply Voltage
1.05
1.00
R_OSC = 56 k
C_OSC = 100 pF
0.95
0.90
0.85
8 9 10 11 12 13 14 15 16 17
V_CC – Supply Voltage (V)
Switching Frequency vs. Supply Voltage
Document Number: 70815
www.vishay.com
S11-0975–Rev. E, 16-May-11
5
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000