SI9118_11 Datasheet, PDF (4/11 Pages) Vishay Siliconix – Programmable Duty Cycle Controller

Si9118, Si9119
Vishay Siliconix
SPECIFICATIONS
Parameter
Protection
Symbol
Test Conditions
Unless Otherwise Specified
- V_IN = 0 V, V_CC = 10 V
Limits
D Suffix - 40 to 85 °C
Temp.^a
Min.
Typ.^b Max. Unit
Current Limit Treshold Voltage
V_I(Limit)
V_FB = 0, NI = V_REF
0.5
0.6
0.7
V
Current Limit Delay to Output^c
t_d
Soft-Start Current
I_SS
V_SENSE 0.85 V, See Figure 1
77
100
ns
- 12
- 23
- 30
µA
Output Inhibit Voltage
V_SS(off)
Soft-Start Voltage to Disable Driver Output
0.5
1.26
V
Pulse Skipping Threshold
V_PS
Voltage
80
100
120
mV
Mosfet Driver
Output High Voltage
Output Low Voltage
Output Resistance^c
Rise Time^c
Fall Time^c
V_OH
V_OL
R_OUT
t_r
t_r
I_OUT = - 10 mA
I_OUT = 10 mA
I_OUT = 10 mA, Source or Sink
C_L = 500 pF
Room
Full
V_CC - 0.3
V_CC - 0.5
Room
Full
Room
20
Full
25
Room
40
Room
40
V
0.3
0.5
30
50

75
ns
75
Notes:
a. Room = 25 °C, Full = as determined by the operating temperature suffix.
b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
c. Guaranteed by design, not subject to production test.
d. C_STRAY  5 pF on C_OSC
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation
of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum
rating conditions for extended periods may affect device reliability.
TIMING WAVEFORMS
Current
Sense
0.85
0
t_r 10 ns
50 %
t_d
Output
V_CC
90 %
0
Figure 1.
www.vishay.com
Document Number: 70815
4
S11-0975–Rev. E, 16-May-11
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