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| 型号： | SI786CG-T1-E3 |
| 厂商： | Vishay Siliconix |
| 文件页数： | 3/16页 |
| 文件大小： | 236K |
| 描述： | IC REG QD BUCK/LINEAR 28SSOP |
| 标准包装： | 1,800 |
| 拓扑： | 降压（降压）（2），线性（LDO）（2） |
| 功能： | 任何功能 |
| 输出数： | 4 |
| 频率 - 开关： | 300kHz，200kHz |
| 电压/电流 - 输出 1： | 控制器 |
| 电压/电流 - 输出 2： | 控制器 |
| 电压/电流 - 输出 3： | 5V，5mA |
| 带 LED 驱动器： | 无 |
| 带监控器： | 无 |
| 带序列发生器： | 无 |
| 电源电压： | 5.5 V ~ 30 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.209"，5.30mm 宽） |
| 供应商设备封装： | 28-SSOP |
| 包装： | 带卷 (TR) |
Document Number: 70189
S-40807-Rev. J, 26-Apr-04
www.vishay.com
3
Vishay Siliconix
Si786
Product is End of Life 3/2014
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.
e. Limits are for all temperature grades unless otherwise noted.
SPECIFICATIONS
Parameter
Specific Test Conditions
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
Limits
e
Unit
Min
a
Typ
b
Max
a
Internal Regulator and Reference
V
L
/FB
5
Switchover Voltage
Rising Edge of FB
5
, Hysteresis = 1 %
4.2
4.7
V
REF Output Voltage
No External Load
c
3.24
3.36
REF Fault Lockout Voltage
Falling Edge
2.4
3.2
REF Load Regulation
0 mA < I
L
< 5 mA
d
30 75 mV
V+ Shutdown Current
SHDN
= D
1
= D
2
= ON
3
= ON
5
= 0 V
V+ = 30 V
25 40
礎
V+ Standby Current
D
1
= D
2
= ON
3
= ON
5
= 0 V
V+ = 30 V
70 110
Si786DG/DRG/DSG
70 115
Quiescent Power Consumption (both
PWM controllers on)
D
1
= D
2
= 0 V, FB
5
= CS
5
= 5.25 V
FB
3
= CS
3
= 3.5 V
5.5 8.6
mV
Si786DG/DRG/DSG
5.5 9.0
V+ Off Current
FB
5
= CS
5
= 5.25 V, V
L
Switched Over to FB
5
30 60 礎
Comparators
D
1
, D
2
Trip Voltage
Falling Edge Hysteresis = 1 %
1.61
1.69
V
Si786DG/DRG/DSG 1.60
1.69
D
1
, D
2
Input Current
D
1
= D
2
= 0 V, 5 V
?100 nA
Q
1
, Q
2
Source Current
V
H
= 15 V, V
OUT
= 2.5 V
12 20 30
礎
Q
1
, Q
2
Sink Current
200 500 1000
Q
1
, Q
2
Output High Voltage
I
SOURCE
= 5 A, V
H
= 3 V
V
H
- 0.5
V
Q
1
, Q
2
Output Low Voltage
I
SINK
= 20 A, V
H
= 3 V
0.4
Quiescent V
H
Current
V
H
= 18 V, D
1
= D
2
= 5 V, No External Load
4 10 礎
Oscillator and Inputs/Outputs
Oscillator Frequency
SYNC = 3.3 V
270 300 330
kHz
Si786DG/DRG/DSG 260 300 330
SYNC = 0 V, 5 V
170 200 230
Si786DG/DRG/DSG 165 200 230
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
0.8
V
Input High Voltage
SHDN
, ON
3
, ON
5
2.4
SYNC
V
L
- 0.5
Input Current
SHDN
, ON
3
, ON
5
, V
IN
= 0 V, 5 V
?1 礎
DL
3
/DL
5
Sink/Source Current
V
OUT
= 2 V
1
A
DH
3
/DH
5
Sink/Source Current
BST
3
- LX
3
= BST
5
- LX
5
= 4.5 V, V
OUT
= 2 V
1
DL
3
/DL
5
On-Resistance
High or Low
7
?/DIV>
DH
3
/DH
5
On-Resistance
High or Low
BST
3
- LX
3
= BST
5
- LX
5
= 4.5 V
7
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