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Si9112

Features: · 9- to 80-V Input Range· Current-Mode Control· High-Speed, Source-Sink Output Drive· High Efficiency Operation (> 80%)· Internal Start-Up Circuit· Internal Oscillator (1 MHz)· SHUTDOWN and RESET PinoutSpecificationsVoltages Referenced to −VIN (VCC < +VIN + 0.3 V)VCC . . . . ...

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SeekIC No. : 004490885 Detail

Si9112: Features: · 9- to 80-V Input Range· Current-Mode Control· High-Speed, Source-Sink Output Drive· High Efficiency Operation (> 80%)· Internal Start-Up Circuit· Internal Oscillator (1 MHz)· SHUTDOWN...

Si9112 Data Sheet

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Part Number:
Si9112
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· 9- to 80-V Input Range
· Current-Mode Control
· High-Speed, Source-Sink Output Drive
· High Efficiency Operation (> 80%)
· Internal Start-Up Circuit
· Internal Oscillator (1 MHz)
· SHUTDOWN and RESET


Pinout

Connection Diagram


Specifications

Voltages Referenced to −VIN (VCC < +VIN + 0.3 V)
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 V
+VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 V
Logic Inputs
(RESET, SHUTDOWN, OSC IN) . . . . . . . . . . . . . . . . . −0.3 V to VCC + 0.3 V
Linear Inputs (FEEDBACK, SENSE) . . . . . . . . . . . . . . −0.3 V to VCC + 0.3 V
HV Pre-Regulator Input Current (continuous) . . . . . . . . . . . . . . . . . . . . 25 mA
(Power Dissipation Limited)
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65 to 150
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40 to 85
Junction Temperature (TJ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Power Dissipation (Package)a
14-Pin Plastic DIP (J Suffix)b . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750 mW
14-Pin SOIC (Y Suffix)c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900 mW
Thermal Impedance (JA)
14-Pin Plastic DIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167/W
14-Pin SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140/W
Notes
a. Device mounted with all leads soldered or welded to PC board.
b. Derate 6 mW/ above 25.
c. Derate 7.2 mW/ above 25.


Description

The Si9112 is a BiC/DMOS integrated circuit designed for use in high-efficiency switchmode power converters. A high-voltage DMOS input allows this controller to work over a wide range of input voltages (9- to 80-VDC). Current-mode PWM control circuitry is implemented in CMOS to reduce internal power consumption to less than 10 mW.

A CMOS output driver provides high-speed switching of MOSPOWER devices large enough to supply 50 W of output power. When combined with an output MOSFET and transformer, the Si9112 can be used to implement single-ended power converter topologies (i.e., flyback, forward, and cuk).

The Si9112 is available in both standard and lead (Pb)-free 14-pin plastic DIP and SOIC packages which are specified to operate over the industrial temperature range of −40 to85.




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