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6V-100V Wide Input Voltage Range Synchronous Buck Controller, SCT82A30 Replace LM5146.
SCT82A30 SCT82A30.pdf
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
优势替代
LM5146 LM5146.pdf

No.14496

FEATURES

• Functional Safety-Capable

  – Documentation available to aid functional safety
    system design
• Versatile synchronous buck DC/DC controller
  – Wide input voltage range of 5.5 V to 100 V
  – 150°C maximum junction temperature
  – 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
  – Lossless RDS(on) or shunt current sensing
  – Optimized for CISPR 11 and CISPR 32 Class B
    EMI 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
• 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 LM5146 with
  WEBENCH® Power Designer
PIN CONFIGUTION
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