a. Device mounted with all leads soldered or welded to PC board.
b. Derate 9.52 mW/_C above 90_C.
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.
SPECIFICATIONS
Specific Test Conditions
Parameter
3.3-V Buck Controller
Total Regulation (Line, Load, and Temperature)
Line Regulation
Load Regulation
Current Limit
Bandwidth
Phase Margin
V
IN
= 6 to 30 V, 0 < V
CS3
– V
FB3
< 90 mV
V
IN
= 6 to 30 V
0 < V
CS3
– V
FB3
< 90 mV
V
CS3
– V
FB3
L = 10
mH,
C = 330
mF
R
SENSE
= 20 mW
90
125
50
65
3.23
3.33
3.43
±0.5
±0.5
160
V
%
mV
kHz
_
V
IN
= 15 V , I
VL
= I
REF
= 0 mA
T
A
= 0_C to 90_C, All Converters ON
Limits
Min
a
Typ
b
Max
a
Unit
5-V Buck Controller
Total Regulation (Line, Load, and Temperature)
Line Regulation
Load Regulation
Current Limit
Bandwidth
Phase Margin
V
IN
= 6 to 30 V, 0 < V
CS5
– V
FB5
< 90 mV
V
IN
= 6 to 30 V
0 < V
CS5
– V
FB5
< 90 mV
V
CS5
– V
FB5
L = 10
mH,
C = 330
mF
R
SENSE
= 20 mW
90
125
50
65
4.88
5.03
5.18
±0.5
±0.5
160
V
%
mV
kHz
_
12-V Flyback Controller
Total Regulation (Line, Load, and Temperature)
Line Regulation
Load Regulation
Current Limit
Bandwidth
Phase Margin
V
IN
= 6 to 30 V, 0 < V
CSP
– V
CSN
< 300 mV
V
IN
= 6 to 30 V
0 < V
CSP
– V
FBN
< 300 mV
V
CSP
– V
CSN
L = 10
mH,
C = 100
mF
R
SENSE
= 100 mW, C
comp
= 120 pF
330
410
10
65
11.4
12.0
12.6
±0.5
±0.5
500
V
%
mV
kHz
_
Internal Regulator
V
L
Output
V
L
Fault Lockout Voltage
V
L
Fault Lockout Hysteresis
V
L
/FB5 Switchover Voltage
V
L
/FB5 Switchover Hysteresis
www.vishay.com
S
FaxBack 408-970-5600
4.2
75
All Converters OFF, V
IN
>5.5 V, 0 <I
L
<30 mA
4.7
3.6
75
4.7
5.5
4.2
mV
V
mV
Document Number: 70818
S-00583—Rev. C, 03-Apr-00
V
2
Si9136
Vishay Siliconix
SPECIFICATIONS
Specific Test Conditions
Parameter
Reference
REF Output
REF Load Regulation
No External Load
0 to 1 mA
3.24
3.30
30
3.36
75
V
mV
V
IN
= 15 V , I
VL
= I
REF
= 0 mA
T
A
= 0_C to 90_C, All Converters ON
Limits
Min
a
Typ
b
Max
a
Unit
Supply Current
Supply Current*Shutdown
Supply Current*Operation
All Converters OFF, No Load
All Converters ON, No Load, F
OCS
= 200 kHz
35
1100
60
1800
mA
Oscillator
Oscillator Frequency
Maximum Duty Cycle
180
92
200
95
220
kHz
%
Outputs
Gate Driver Sink/Source Current (Buck)
Gate Driver On-Resistance (Buck)
Gate Driver Sink/Source Current (Flyback)
Gate Driver On-Resistance (Flyback)
DL3, DH3, DL5, DH5 Forced to 2 V
High or Low
DHFY, DLFY Forced to 2 V
High or Low
1
2
0.2
15
7
A
W
A
W
5 ON/OFF, 3 ON/OFF, and 12 ON/OFF
V
IL
V
IH
Notes
a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum.
b. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
2.4
0.8
V
PIN CONFIGURATION
SSOP-28
1
2
3
4
5
6
7
8
9
10
11
12
12
14
Top View
www.vishay.com
S
FaxBack 408-970-5600
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Si9136LG
0 to 90_C
ORDERING INFORMATION
Part Number
Temperature Range
V
OUT
3.3 V, 5 V, 12 V
Evaluation Board
Si9136DB
Temperature Range
0 to 90_C
Board Type
Surface Mount
Document Number: 70818
S-00583—Rev. C, 03-Apr-00
3
Si9136
Vishay Siliconix
PIN DESCRIPTION
Pin
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Symbol
CS
3
FBFY
BSTFY
DHFY
LXFY
DLFY
CSP
CSN
GND
COMP
REF
12 ON/OFF
3.3 ON/OFF
5 ON/OFF
CS
5
DH5
LX
5
BST
5
DL5
PGND
FB
5
V
L
V
IN
DL3
BST
3
LX
3
DH3
FB
3
Current sense input for 3.3-V buck.
Feedback for flyback.
Boost capacitor connection for flyback converter.
Gate-drive output for flyback high-side MOSFET.
Inductor connection for flyback converter.
Gate-drive output for flyback low-side MOSFET.
Current sense positive input for flyback converter.
Current sense negative input for flyback converter.
Analog ground.
Flyback compensation connection, if required.
3.3-V internal reference.
ON and OFF control input for 12-V flyback controller.
ON and OFF control input for 3.3-V buck controller.
ON and OFF control input for 5-V buck controller.
Current sense input for 5-V buck controller.
Inductor connection for buck 5-V.
Gate-drive output for 5-V buck high-side MOSFET.
Boost capacitor connection for 5-V buck converter.
Gate-drive output for 5-V buck low-side MOSFET.
Power ground.
Feedback for 5-V buck.
5-V logic supply voltage for internal circuitry.
Input voltage
Gate-drive output for 3.3-V buck low-side MOSFET.
Boost capacitor connection for 3.3-V buck converter.
Inductor connection for 3.3-V buck low-side MOSFET.
Gate-drive output for 3.3-V buck high-side MOSFET.
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