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6V-100V Wide Input Voltage Range Synchronous Buck Controller, SCT82A30 Replace LM25145.
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
優勢替代
LM25145 LM25145.pdf

No.14497

FEATURES

? Versatile Synchronous Buck DC-DC Controller

  – Wide Input Voltage Range of 6 V to 42 V
  – Adjustable Output Voltage From 0.8 V to 40 V
? Meets EN55022 / CISPR 22 EMI Standards
? Lossless RDS(on) or Shunt Current Sensing
? Switching Frequency From 100 kHz to 1 MHz
  – SYNC In and SYNC Out Capability
? 40-ns Minimum On-Time for High VIN / VOUT Ratio
? 140-ns Minimum Off-Time for Low Dropout
? 0.8-V Reference With ±1% Feedback Accuracy
? 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
? Adjustable Soft-Start or Optional Voltage Tracking
? Fast Line and Load Transient Response
  – Voltage-Mode Control With Line Feedforward
  – High Gain-Bandwidth Error Amplifier
? Precision Enable Input and Open-Drain Power
  Good Indicator for Sequencing and Control
? Inherent Protection Features for Robust Design
  – Hiccup Mode Overcurrent Protection
  – Input UVLO With Hysteresis
  – VCC and Gate Drive UVLO Protection
  – Thermal Shutdown Protection With Hysteresis
? VQFN-20 Package With Wettable Flanks
? Create a Custom Design Using the LM25145 With
  WEBENCH? Power Designer
PIN CONFIGUTION
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