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SI786LG-T1 датащи(PDF) 3 Page - Vishay Siliconix

номер детали SI786LG-T1
подробное описание детали  Dual-Output Power-Supply Controller
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производитель  VISHAY [Vishay Siliconix]
домашняя страница  http://www.vishay.com
Logo VISHAY - Vishay Siliconix

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Si786
Vishay Siliconix
Document Number: 70189
S-40807—Rev. J, 26-Apr-04
www.vishay.com
3
SPECIFICATIONS
Limitse
Specific Test Conditions
V+ = 15 V, IVL = IREF = 0 mA, SHDN = ON3 = ON5 = 5 V
Other Digital Input Levels 0 V or 5 V, TA = TMIN to TMAX
Parameter
Unit
Maxa
Typb
Mina
Specific Test Conditions
V+ = 15 V, IVL = IREF = 0 mA, SHDN = ON3 = ON5 = 5 V
Other Digital Input Levels 0 V or 5 V, TA = TMIN to TMAX
Comparators
D1 D2 Trip Voltage
Falling Edge Hysteresis = 1%
1.61
1.69
V
D1, D2 Trip Voltage
Falling Edge, Hysteresis = 1%
Si786DG/DRG/DSG
1.60
1.69
V
D1, D2 Input Current
D1 = D2 = 0 V, 5 V
"100
nA
Q1, Q2 Source Current
VH = 15 V VOUT = 2 5 V
12
20
30
mA
Q1, Q2 Sink Current
VH = 15 V, VOUT = 2.5 V
200
500
1000
mA
Q1, Q2 Output High Voltage
ISOURCE = 5 mA, VH = 3 V
VH - 0.5
V
Q1, Q2 Output Low Voltage
ISINK = 20 mA, VH = 3 V
0.4
V
Quiescent VH Current
VH = 18 V, D1 = D2 = 5 V, No External Load
4
10
mA
Oscillator and Inputs/Outputs
SYNC = 3 3 V
270
300
330
Oscillator Frequency
SYNC = 3.3 V
Si786DG/DRG/DSG
260
300
330
kHz
Oscillator Frequency
SYNC = 0 V 5 V
170
200
230
kHz
SYNC = 0 V, 5 V
Si786DG/DRG/DSG
165
200
230
SYNC High Pulse Width
200
SYNC Low Pulse Width
200
ns
SYNC Rise/Fall Time
Not Tested
200
Oscillator SYNC Range
240
350
kHz
Maximum Duty Cycle
SYNC = 3.3 V
89
92
%
Maximum Duty Cycle
SYNC = 0 V, 5 V
92
95
%
Input Low Voltage
SHDN, ON3, ON5 SYNC
0.8
Input High Voltage
SHDN, ON3, ON5
2.4
V
Input High Voltage
SYNC
VL - 0.5
Input Current
SHDN, ON3, ON5 VIN = 0 V, 5 V
"1
mA
DL3/DL5 Sink/Source Current
VOUT = 2 V
1
A
DH3/DH5 Sink/Source Current
BST3 - LX3 = BST5 - LX5 = 4.5 V, VOUT = 2 V
1
A
DL3/DL5 On-Resistance
High or Low
7
DH3/DH5 On-Resistance
High or Low
BST3 - LX3 = BST5 - LX5 = 4.5 V
7
W
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 (AVCL) and
the reference voltage load-regulation error. AVCL for the 3.3-V supply is unity gain. AVCL for the 5-V supply is 1.54.
d.
Since the reference uses VL as its supply, its V+ line regulation error is insignificant.
e.
Limits are for all temperature grades unless otherwise noted.


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