a. Device mounted with all leads soldered or welded to PC board.
b. Derate 9.52 mW/_C above 70_C.
Exposure to Absolute Maximum rating conditions for extended periods may affect device reliability.
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.
SPECIFICATIONS
Specific Test Conditions
PARAMETER
V+ = 15 V, I
VL
= I
REF
= 0 mA, SHDN = ON
3
= ON
5
= 5 V
Other Digital Input Levels 0 V or 5 V, T
A
= T
MIN
to T
MAX
MIN
A
LIMITS
TYP
B
MAX
A
UNIT
3.3-V and 5-V Step-Down Controllers
Input Supply Range
FB
5
Output Voltage
0 mV < (CS
5
-FB
5
) < 70 mV, 6 V < V + < 30 V
(includes load and line regulation)
0 mV < (CS
3
-FB
3
) <
FB
70 mV
V
FB
3
Output Voltage
p
g
6 V < V + < 30 V
(includes load and
line regulation)
3.6ADJ = 3.45ADJ = OPEN
3.6ADJ = OPEN
3.45ADJ = GND
3.6ADJ = GND
3.45ADJ = OPEN
5.5
4.80
3.17
3.32
3.46
5.08
3.35
3.50
3.65
2.5
0.03
80
2.5
2
100
4.0
120
6.5
30
5.20
3.46
3.60
3.75
%
%/V
mV
mA
mA
V
Load Regulation
Line Regulation
Current-Limit Voltage
SS
3
/SS
5
Source Current
SS
3
/SS
5
Fault Sink Current
Either Controller (CS_ to FB_ = 0 to 70 mV)
Either Controller (V+ = 6 V to 30 V)
CS
3
-FB
3
or CS
5
-FB
5
Internal Regulator and Reference
V
L
Output Voltage
V
L
Fault Lockout Voltage
V
L
/FB
5
Switchover Voltage
REF Output Voltage
REF Fault Lockout Voltage
REF Load Regulation
www.vishay.com
ON
5
= ON
3
= 0 V, 5.5 V < V+ < 30 V
0 mA < I
L
< 25 mA
Falling Edge, Hysteresis = 1%
Rising Edge of FB
5
, Hysteresis = 1%
No External Load
c
Falling Edge
0 mA < I
L
< 5 mA
d
4.5
3.6
4.2
3.24
2.4
30
5.5
4.2
4.7
3.36
3.2
75
mV
V
2
Document Number: 70190
S-40805—Rev. F, 26-Apr-04
Si9130
Vishay Siliconix
SPECIFICATIONS
Specific Test Conditions
PARAMETER
V+ = 15 V, I
VL
= I
REF
= 0 mA, SHDN = ON
3
= ON
5
= 5 V
Other Digital Input Levels 0 V or 5 V, T
A
= T
MIN
to T
MAX
MIN
A
LIMITS
TYP
B
MAX
A
UNIT
Internal Regulator and Reference (Cont’d)
V+ Shutdown Current
V+ Standby Current
Quiescent Power Consumption
(both PWM controllers on)
V+ Off Current
SHDN = ON
3
= ON
5
= 0 V, V+ = 30 V
ON
3
= ON
5
= 0 V, V+ = 30 V
FB
5
= CS
5
= 5.25 V
FB
3
= CS
3
= 3.5 V
FB
5
= CS
5
= 5.25 V, V
L
Switched Over to FB
5
25
70
5.5
30
40
110
8.6
60
mA
mW
mA
Oscillator and Inputs/Outputs
Oscillator Frequency
SYNC High Pulse Width
SYNC Low Pulse Width
SYNC Rise/Fall Time
Oscillator SYNC Range
Maximum Duty Cycle
Input Low Voltage
Input High Voltage
Input Current
DL
3
/DL
5
Sink/Source Current
DH
3
/DH
5
Sink/Source Current
DL
3
/DL
5
On-Resistance
DH
3
/DH
5
On-Resistance
SYNC = 3.3 V
SYNC = 0 V, 5 V
SHDN, ON
3
, ON
5
SYNC
SHDN, ON
3
, ON
5
SYNC
SHDN, ON
3
, ON
5
V
IN
= 0 V, 5 V
V
OUT
= 2 V
BST
3
- LX
3
= BST
5
- LX
5
= 4.5 V, V
OUT
= 2 V
High or Low
High or Low
BST
3
- LX
3
= BST
5
- LX
5
= 4.5 V
1
1
7
7
W
2.4
V
L
- 0.5 V
"1
mA
A
Not Tested
240
89
92
92
95
0.8
V
SYNC = 3.3 V
SYNC = 0 V, 5 V
270
170
200
200
200
350
kHz
%
ns
300
200
330
230
kHz
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.
c. The main switching outputs track the reference voltage. Loading the reference reduces the main outputs slightly according to the closed-loop gain (AV
CL
) and
the reference voltage load-regulation error. AV
CL
for the 3.3-V supply is unity gain. AV
CL
for the 5-V supply is 1.54.
d. Since the reference uses V
L
as its supply, its V+ line regulation error is insignificant.
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