SI9136DB Vishay, SI9136DB Datasheet - Page 9
![Pulse Width Modulation (PWM) Controller IC](/photos/18/99/189938/3833516_sml.gif)
SI9136DB
Manufacturer Part Number
SI9136DB
Description
Pulse Width Modulation (PWM) Controller IC
Manufacturer
Vishay
Datasheet
1.SI9136LG.pdf
(15 pages)
Specifications of SI9136DB
Silicon Manufacturer
Vishay
Application Sub Type
Power Supply Controller
Kit Application Type
Power Management
Silicon Core Number
SI9136
Kit Contents
Board
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Document Number: 70818
S-00583—Rev. C, 03-Apr-00
(Sysmon EN)
(Sysmon EN)
f
OSC EN
max
ON/OFF
f
OSC EN
max
ON/OFF
V
OSC
(SS)
REF
V
DH
D
V
V
OSC
IN
(SS)
L
L
REF
V
DH
DL
V
IN
L
2.4 V
t
BBM
FIGURE 2. Converter is Enabled Before V
FIGURE 3. Converter is Enabled After V
2.4 V
4 ms
4 ms
IN
is Applied
IN
is Applied
The converter is enabled
V
LDO is activated
after V
REF circuit is activated
after V
available
After V
2.4 V, the converter is
turned on
Oscillator is activated
Slow soft-start gradually
increases the maximum
inductor current
High-side gate drive duty
ratio gradually increases
to maximum
Low-side gate drive
IN
The converter is
enabled
V
LDO is activated
after V
REF circuit is activated
after V
available
After V
2.4 V, the converter is
turned on
Oscillator is activated
Slow soft-start gradually
increases the maximum
inductor current
is applied
www.vishay.com FaxBack 408-970-5600
IN
IN
L
is applied
REF
becomes
is applied
IN
L
REF
becomes
goes above
Vishay Siliconix
is applied
goes above
Si9136
9