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SG3825C

Features: · IMPROVED REFERENCE INITIAL TOLERANCE (±1% max.)· IMPROVED OSCILLATOR INITIAL ACCURACY (±3% typ.)· IMPROVED STARTUP CURRENT (500µA typ.)· PROP DELAY TO OUTPUTS (50ns typ.)· 10V TO 30V OPERATION· 5.1V REFERENCE TRIMMED TO ±1%· 2MHZ OSCILLATOR CAPABILITY· 1.5A PEAK TOTEM-POLE DRIVER...

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SeekIC No. : 004489101 Detail

SG3825C: Features: · IMPROVED REFERENCE INITIAL TOLERANCE (±1% max.)· IMPROVED OSCILLATOR INITIAL ACCURACY (±3% typ.)· IMPROVED STARTUP CURRENT (500µA typ.)· PROP DELAY TO OUTPUTS (50ns typ.)· 10V TO 3...

SG3825C Data Sheet

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Part Number:
SG3825C
Supply Ability:
5000

Price Break

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

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Upload time: 2024/12/23

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Product Details

Description



Features:

· IMPROVED REFERENCE INITIAL TOLERANCE (±1% max.)
· IMPROVED OSCILLATOR INITIAL ACCURACY (±3% typ.)
· IMPROVED STARTUP CURRENT (500µA typ.)
· PROP DELAY TO OUTPUTS (50ns typ.)
· 10V TO 30V OPERATION
· 5.1V REFERENCE TRIMMED TO ±1%
· 2MHZ OSCILLATOR CAPABILITY
· 1.5A PEAK TOTEM-POLE DRIVERS
· U.V. LOCKOUT WITH HYSTERESIS
· NO OUTPUT DRIVER "FLOAT"
· PROGRAMMABLE SOFTSTART
· DOUBLE-PULSE SUPPRESSION LOGIC
· WIDEBAND LOW-IMPEDANCE ERROR AMPLIFIER
· CURRENT-MODE OR VOLTAGE-MODE CONTROL
· WIDE CHOICE OF HIGH-FREQUENCY PACKAGES


Application

1. HIGH-SPEED LAYOUT AND BYPASSING
2. MICROPOWER STARTUP
3. SOFTSTART FAST RESET
4. OSCILLATOR SYCHRONIZATION
5. OSCILLATOR FUNCTIONAL DIAGRAM
6. VOLTAGE AMPLIFIER CONNECTIONS
7. DRIVING SHIELDED CABLE


Pinout

Connection Diagram


Specifications

Input Voltage (VIN and VC) .................................................... 30V
Analog Inputs:
Error Amplifier and Ramp ......................................... -0.3V to 7.0V
Softstart and ILIM/S.D. ............................................ -0.3V to 6.0V
Digital Input (Clock) .................................................. 1.5V to 6.0V
Driver Outputs ...................................................-0.3V to VC+1.5V
Source / Sink Output Current (each output):
Continuous ........................................................................... 0.5A
Pulse, 500ns ......................................................................... 2.0A
Softstart Sink Current ......................................................... 20mA
Clock Output Current ............................................................ 5mA
Error Amplifier Output Current .............................................. 5mA
Oscillator Charging Current .................................................. 5mA
Operating Junction Temperature:
Hermetic (J, L Package) ...................................................... 150
Plastic (DW, N, Q Packages) ............................................... 150
Storage Temperature Range....................................... to 150
Lead Temperature (soldering, 10 seconds) ....................... 300

Note 1. Exceeding these ratings could cause damage to the device.


Description

The SG3825C is a high-performance pulse width modulator optimized for high frequency current-mode power supplies. Included in the controller are a precision voltage reference, micropower start-up circuitry, softstart, high-frequency oscillator, wideband error amplifier, fast currentlimit comparator, full double-pulse suppression logic, and dual totempole output drivers. Innovative circuit design and an advanced linear Schottky process result in very short propagation delays through the current limit comparator, logic, and output drivers. The SG3825C can be used to implement either currentmode or voltage-mode switching power supplies. It also is useful as a series-resonant controller to frequencies beyond 1MHz. The SG1825C is specified for operation over the full military ambient temperature range of -55 to 125. The SG2825C is characterized for the industrial range of -25 to 85, and the SG3825C is selected for the commercial range of 0 to 70.




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