SI9108 Vishay, SI9108 Datasheet

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SI9108

Manufacturer Part Number
SI9108
Description
Si9108 - Vishay Power Ics
Manufacturer
Vishay
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
SI9108DN02-E3
Manufacturer:
Vishay Siliconix
Quantity:
10 000
Part Number:
SI9108DN02-T1-E3
Manufacturer:
Vishay Siliconix
Quantity:
10 000
DESCRIPTION
The Si9108 high-voltage switchmode regulator is a monolithic
BiC/DMOS integrated circuit which contains most of the
components necessary to implement a high-efficiency dc/dc
converter in ISDN terminals up to 3 watts. A 0.5-mA max
supply current makes possible the design of a dc/dc converter
with 60% efficiency at 25 mW, therefore meeting the
recommended
specifications.
Document Number: 70883
S-42038—Rev. B,15-Nov-04
FEATURES
D CCITT Compatible
D Current-Mode Control
D Low Power Consumption
FUNCTIONAL BLOCK DIAGRAM
(less than 5 mW)
V
+V
BIAS
V
REF
CC
IN
performance
1-W High-Voltage Switchmode Regulator
Current
Sources
Gen
Ref
FB
+
under
4 V (1%)
+
Amplifier
8.7 V
Error
9.3 V
Internal
Circuits
the
To
COMP
D 10- to 120-V Input Range
D 200-V, 250-mA MOSFET
D Internal Start-Up Circuit
2 V
CCITT
+
1.2 V
DISCHARGE
+
+
Undervoltage Comparator
I.430
Current-Mode
Comparator
Comparator
C/L
This device may be used with an appropriate transformer to
implement isolated flyback power converter topologies to
provide single or multiple regulated dc outputs (i.e., "5 V).
The Si9108 is available in both standard and lead (Pb)-free
16-pin wide-body SOIC, 14-pin plastic DIP and 20-pin PLCC
packages which are specified to operate over the industrial
temperature range of −40 _C to 85 _C.
OSC
IN
OSC
OSC
OUT
R
S
Clock
Q
D SHUTDOWN and RESET
D Maximum Duty Cycle of 99.9%
Q
S
R
V
CC
Vishay Siliconix
RESET
SHUTDOWN
DRAIN
SOURCE
www.vishay.com
Si9108
(BODY)
−V
IN
1

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SI9108 Summary of contents

Page 1

... D Internal Start-Up Circuit This device may be used with an appropriate transformer to implement isolated flyback power converter topologies to provide single or multiple regulated dc outputs (i.e., "5 V). The Si9108 is available in both standard and lead (Pb)-free 16-pin wide-body SOIC, 14-pin plastic DIP and 20-pin PLCC the CCITT I ...

Page 2

... Si9108 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Voltages Referenced to −V (V < 0 ...

Page 3

... Room Room See Figure 3 See Figure 3 Room Room Room Room Room 100 mA DRAIN I = 100 mA Room DRAIN V = 100 V Room DRAIN Room Si9108 Vishay Siliconix Limits Min Typ Max Unit Unit 99.0 99.6 99.9 100 0 110 175 0.8 1.0 1.2 200 300 120 ...

Page 4

... Si9108 Vishay Siliconix TIMING WAVEFORMS 1.5 V − 50% SOURCE − DRAIN 0 FIGURE 50% SHUTDOWN 0 − RESET 0 − TYPICAL CHARACTERISTICS Output Switching Frequency vs. Oscillator Resistance www.vishay.com 4 SHUTDOWN 10 50% FIGURE 200 100 k r − Oscillator Resistance (W) OSC FIGURE 4 ...

Page 5

... ORDERING INFORMATION Lead (Pb)-Free Part Number Package Si9108DJ02—E3 PDIP-14 SOIC-16 (WB) Si9108DW-T1—E3 (With Tape and Reel) PLCC-20 Si9108DN02-T1—E3 (With Tape and Reel) Si9108 Vishay Siliconix PLCC- ...

Page 6

... Nominal reference output voltage The trimming procedure that is used on the Si9108 brings the output of the error amplifier (which is configured for unity gain during trimming) to within " This automatically compensates for the input offset voltage in the error amplifier ...

Page 7

... Package Reliability represent a composite of all qualified locations. http://www.vishay.com/ppg?70883. Document Number: 70883 S-42038—Rev. B,15-Nov-04 Output Switch The output switch is a 7-W , 200-V lateral DMOS transistor. Like discrete MOSFETs, the switch contains an intrinsic body-drain diode. However, the body contact in the Si9108 is connected internally to − ...

Page 8

... Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right ...

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