SI786 Vishay, SI786 Datasheet - Page 3

• Manufacturer Part Number: SI786
• Description: Dual-output Power-supply Controller
• Manufacturer: Vishay

Notes
a.
b.
c.
d.
e.
Document Number: 70189
S-40807—Rev. J, 26-Apr-04
SPECIFICATIONS
Comparators
D
D
D
Q
Q
Q
Q
Quiescent V
Oscillator and Inputs/Outputs
Oscillator Frequency
Oscillator Frequency
SYNC High Pulse Width
SYNC Low Pulse Width
SYNC Rise/Fall Time
Oscillator SYNC Range
Maximum Duty Cycle
Maximum Duty Cycle
Input Low Voltage
Input High Voltage
Input High Voltage
Input Current
DL
DH
DL
DH
1
1
1
1
1
1
1
, D
, D
, Q
, Q
, Q
, Q
3
3
3
3
The algebraic convention whereby the most negative value is a minimum and the most positive a maximum.
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
The main switching outputs track the reference voltage. Loading the reference reduces the main outputs slightly according to the closed-loop gain (AV
the reference voltage load-regulation error. AV
Since the reference uses V
Limits are for all temperature grades unless otherwise noted.
D
/DL
/DL
/DH
/DH
2
2
2
2
2
2
2
Trip Voltage
Trip Voltage
Input Current
Source Current
Sink Current
Output High Voltage
Output Low Voltage
5
5
5
5
Sink/Source Current
On-Resistance
Sink/Source Current
On-Resistance
H
Parameter
Current
L
as its supply, its V+ line regulation error is insignificant.
Falling Edge Hysteresis = 1%
Falling Edge, Hysteresis = 1%
V+ = 15 V, I
V+ = 15 V, I
Other Digital Input Levels 0 V or 5 V, T
Other Digital Input Levels 0 V or 5 V, T
CL
BST
SYNC = 0 V 5 V
SYNC = 0 V, 5 V
for the 3.3-V supply is unity gain. AV
V
SYNC = 3 3 V
SYNC = 3.3 V
H
= 18 V, D
3
Specific Test Conditions
Specific Test Conditions
- LX
VL
VL
BST
SHDN, ON
= I
= I
I
3
SOURCE
SHDN, ON
V
V
3
I
SINK
REF
REF
= BST
H
H
- LX
D
1
SHDN, ON
= 15 V V
= 15 V, V
SYNC = 0 V, 5 V
1
= D
SYNC = 3.3 V
= 0 mA, SHDN = ON
= 0 mA, SHDN = ON
= 20 mA, V
3
High or Low
High or Low
= D
V
Not Tested
3
= BST
5
OUT
2
, ON
= 5 mA, V
SYNC
- LX
2
= 5 V, No External Load
3
= 0 V, 5 V
, ON
OUT
OUT
= 2 V
5
5
5
3
V
= 4.5 V, V
, ON
- LX
IN
H
5
= 2 5 V
= 2.5 V
H
SYNC
= 3 V
= 0 V, 5 V
= 3 V
5
5
Si786DG/DRG/DSG
Si786DG/DRG/DSG
Si786DG/DRG/DSG
= 4.5 V
A
A
= T
= T
OUT
CL
3
3
= ON
= ON
MIN
MIN
for the 5-V supply is 1.54.
= 2 V
to T
to T
5
5
= 5 V
= 5 V
MAX
MAX
V
V
Min
H
L
1.61
1.60
200
270
260
170
165
200
200
240
2.4
12
89
92
- 0.5
- 0.5
a
Limits
Vishay Siliconix
Typ
500
300
300
200
200
20
92
95
4
1
1
e
b
Max
"100
1000
1.69
1.69
330
330
230
230
200
350
0.4
0.8
"1
30
10
7
7
www.vishay.com
a
Si786
CL
Unit
) and
kHz
kHz
kHz
nA
mA
mA
mA
mA
ns
%
%
W
V
V
V
V
V
A
A
3