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5.5V-100V Vin, 4A Peak Current Limit, High Efficiency Asynchronous Stepdown DCDC Converter.
SCT2A25 SCT2A25.pdf

No.10340

FEATURES

Wide Input Range: 5.5V-100V

Maximum Output Voltage: 30V

2A Continuous Output Current

4A Peak Current Limit

Integrated 500mΩ High-Side Power MOSFETs

140uA Quiescent Current

1.2V ±2% Feedback Reference Voltage

4ms Internal Soft-start Time

Fixed Switching Frequency at 300KHz

COT Control Mode with Integrated Loop

  Compensation

Precision Enable Threshold for Programmable

  Input Voltage Under-voltage Lock Out Protection

  (UVLO) Threshold and Hysteresis

Cycle-by-Cycle Current Limiting

Over-Voltage Protection

Over-Temperature Protection

Available in an ESOP-8 Package

DESCRIPTION

The SCT2A25 is an asynchronous buck converter with wide input voltage ranging from 5.5V to 100V which accommodates a variety of step-down applications, making it ideal for automotive, industry, and lighting applications. The SCT2A25 integrates an 500mΩ highside MOSFET and has 4A peak output current limit to support high peak current application in GPS tracker with 4G Module.

The SCT2A25, adopting the constant-on time (COT) mode control with integrated loop compensation greatly simplifies the converter off-chip configuration.

The SCT2A25 features Pulse Frequency Modulation (PFM) mode at light load with typical 140uA low quiescent current, which enables the converter to achieve the high-power efficiency during light-load or no-load conditions.

The SCT2A25 offers cycle-by-cycle current limit and hiccup over current protection, thermal shutdown protection, output over-voltage protection and input voltage under-voltage protection. The device is available in an 8-pin thermally enhanced SOP-8 package.

APPLICATION CIRCUIT
PIN CONFIGUTION
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