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6V-100V Wide Input Voltage Range Synchronous Buck Controller, SCT82A30 Replace LM5145.
FEATURES

Synchronous DCDC Buck Controller

   6V-100V Wide Input Range

   0.8V-60V Adjustable Output Voltage

   0.8V±1% Reference Voltage

   40ns Minimum tON for low duty ratio

   150ns Minimum tOFF for high duty ratio

100 KHz to 1.2 MHz Switching Frequency

   Clock Synchronization In/Out capability

   Selectable Diode Emulation or FPWM

7.5-V Gate Drivers

   2.3-A Source and 3.5-A Sink Current

   Low-side Soft Start for prebiased Start-up

 Fast Line and Load Transient Response

   Voltage-mode control with line feedforward

   High Gain Bandwidth Error Amplifier

Protection Features for Robustness

   Adjustable Soft Start time

   Hiccup-mode Overcurrent Protection

   Input UVLO with hysteresis

   VCC and Gate-drive UVLO Protection

   Precision Enable Input Threshold

   Open-drain Power Good Indicator for

   Sequencing and Control

   Over Temperature Shutdown Protection

External VCC Input for Bypassing Internal LDO

Available in QFN-20L 3.5mmx4.5mm Package



PIN CONFIGUTION
優(yōu)勢(shì)替代
LM5145 LM5145.pdf

No.13247

FEATURES

? Versatile synchronous buck DC/DC controller

  Wide input voltage range of 6 V to 75 V

  0.8-V reference with ±1% feedback accuracy

  Adjustable output voltage from 0.8 V to 60 V

  40-ns tON(min) for high VIN / VOUT ratio

  140-ns tOFF(min) for low dropout

  Optimized for CISPR 32 requirements

? Switching frequency from 100 kHz to 1 MHz

  SYNC In and SYNC Out capability

  Selectable diode emulation or FPWM

? 7.5-V gate drivers for standard VTH MOSFETs

  14-ns adaptive dead-time control

  2.3-A source and 3.5-A sink capability

  Low-side soft start for prebiased start-up

? Fast line and load transient response

  Voltage-mode control with line feedforward

  High gain-bandwidth error amplifier

? Inherent protection features for robust design

  Adjustable output voltage soft start

  Hiccup-mode overcurrent protection

  Input UVLO with hysteresis

  VCC and gate-drive UVLO protection

  Precision enable input and open-drain PGOOD

  indicator for sequencing and control

  Thermal shutdown protection with hysteresis

? 20-pin VQFN package with wettable flanks

? Create a custom design using the LM5145 with

  WEBENCH? Power Designer

PIN CONFIGUTION
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