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參數(shù)資料
| 型號(hào)： | Si786 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Dual-Output Power-Supply Controller(用于便攜電腦電源轉(zhuǎn)換的雙輸出步降轉(zhuǎn)換器) |
| 中文描述： | 雙輸出電源控制器（用于便攜電腦電源轉(zhuǎn)換的雙輸出步降轉(zhuǎn)換器） |
| 文件頁數(shù)： | 3/13頁 |
| 文件大?。?/td> | 497K |
| 代理商： | SI786 |
Si786
Vishay Siliconix
FaxBack 408-970-5600, request 70189
www.siliconix.com
S-60752—Rev. G, 05-Apr-99
3
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.
Comparators
D
1
, D
2
Trip Voltage
D
1
, D
2
Input Current
Q
1
, Q
2
Source Current
Q
1
, Q
2
Sink Current
Q
1
, Q
2
Output High Voltage
Q
1
, Q
2
Output Low Voltage
Quiescent V
H
Current
Oscillator and Inputs/Outputs
Falling Edge, Hysteresis = 1%
1.61
1.69
V
D
1
= D
2
= 0 V, 5 V
±100
nA
V
H
= 15 V, V
OUT
= 2.5 V
12
20
30
μA
200
500
1000
I
SOURCE
= 5 μA, V
H
= 3 V
I
SINK
= 20 μA, V
H
= 3 V
V
H
= 18 V, D
1
= D
2
= 5 V, No External Load
V
H
- 0.5
V
0.4
4
10
μA
Oscillator Frequency
SYNC = 3.3 V
270
300
330
kHz
SYNC = 0 V, 5 V
170
200
230
SYNC High Pulse Width
200
ns
SYNC Low Pulse Width
200
SYNC Rise/Fall Time
Not Tested
200
Oscillator SYNC Range
240
350
kHz
Maximum Duty Cycle
SYNC = 3.3 V
89
92
%
SYNC = 0 V, 5 V
92
95
Input Low Voltage
SHDN, ON
3
, ON
5
SYNC
SHDN, ON
3
, ON
5
SYNC
0.8
V
Input High Voltage
2.4
V
L
- 0.5
Input Current
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
±1
μA
DL
3
/DL
5
Sink/Source Current
DH
3
/DH
5
Sink/Source Current
DL
3
/DL
5
On-Resistance
1
A
1
7
DH
3
/DH
5
On-Resistance
High or Low
BST
3
- LX
3
= BST
5
- LX
5
= 4.5 V
7
SPECIFICATIONS
Parameter
Test Conditions Unless Specified
V+ = 15 V, I
= I
= 0 mA, SHDN = ON
3
= ON
= 5 V
Other Digital Input Levels 0 V or 5 V, T
A
= T
MIN
to T
MAX
Limits
Unit
Min
a
Typ
b
Max
a
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