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Si9120

Features: · 10- to 450-V Input Range· Current-Mode Control· 125-mA Output Drive· Internal Start-Up Circuit· Internal Oscillator (1 MHz)·SHUTDOWN and RESETPinoutSpecificationsVoltages Referenced to −VIN (Note: VCC < +VIN + 0.3 V)VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

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SeekIC No. : 004490892 Detail

Si9120: Features: · 10- to 450-V Input Range· Current-Mode Control· 125-mA Output Drive· Internal Start-Up Circuit· Internal Oscillator (1 MHz)·SHUTDOWN and RESETPinoutSpecificationsVoltages Referenced to &...

Si9120 Data Sheet

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Part Number:
Si9120
Supply Ability:
5000

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  • 1~5000
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  • Negotiable
  • Processing time
  • 15 Days
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Product Details

Description



Features:

· 10- to 450-V Input Range
· Current-Mode Control
· 125-mA Output Drive
· Internal Start-Up Circuit
· Internal Oscillator (1 MHz)
· SHUTDOWN and RESET


Pinout

Connection Diagram


Specifications

Voltages Referenced to −VIN (Note: VCC < +VIN + 0.3 V)
VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 V
+VIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 V
Logic Inputs (RESET
SHUTDOWN, OSC IN, OSC OUT) . . . . . . . . . . . . . . . −0.3 V to VCC + 0.3 V
Linear Input
(FEEDBACK, SENSE, BIAS, VREF) . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 7 V
HV Pre-Regulator Input Current (continuous) . . . . . . . . . . . . . . . . . . . . 5 mAa
Continuous Output Current (Source or Sink) . . . . . . . . . . . . . . . . . . . 125 mA
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65 to 150
Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40 to 85
Junction Temperature (TJ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Power Dissipation (Package)b
16-Pin Plastic DIP (J Suffix)c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750 mW
16-Pin SOIC (Y Suffix)d . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900 mW
Thermal Impedance (JA)
16-Pin Plastic DIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167/W
16-Pin SOIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140/W
Notes
a. Continuous current may be limited by the applications maximum input
voltage and the package power dissipation.
b. Device mounted with all leads soldered or welded to PC board.
c. Derate 6 mW/ above 25.
d. Derate 7.2 mW/ above 25.


Description

The Si9120 is a BiC/DMOS integrated circuit designed for use in low-power, high-efficiency off-line power supplies.

High-voltage DMOS inputs Si9120 allow the controller to work over a wide range of input voltages (10- to 450-VDC). Current-mode PWM control circuitry is implemented in CMOS to reduce quiescent current to less than 1.5 mA.

A CMOS output driver Si9120 provides high-speed switching for MOSFET devices with gate charge, Qg, up to 25 nC, enough to supply 30 W of output power at 100 kHz. These devices, when combined with an output MOSFET and transformer, can be used to implement single-ended power converter topologies (i.e., flyback and forward).

The Si9120 is available in both standard and lead (Pb)-free 16-pin plastic DIP and SOIC packages which are specified to operate over the industrial temperature range of −40to85.




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