GENERAL DEscriptION

The SGM61720 is a constant on-time control (COT) synchronous Buck converter with a wide input voltage range from 6V to 60V. The output voltage is adjustable up to 24V using the internal reference voltage. This device has 2.5A output current capability and operates at an almost fixed quasi-constant frequency (depending on VOUT setting). With light load, the inductor current reaches zero in each cycle (DCM operation) and the device shifts into power-save mode in which frequency drops and becomes load dependent to maintain high efficiency.

The SGM61720 offers a broad set of features including input under-voltage lockout, internal soft-start, short-circuit protection, current limiting and thermal shutdown.

Using COT architecture, the device is capable of high step-down conversion ratios while offering excellent transient response with no need for loop compensation.

The SGM61720 is available in a Green SOIC-8 (Exposed Pad) package.

FEATURES

• Integrated 100mΩ/75mΩ Power MOSFETs

• Wide 6V to 60V Input Voltage Range

• 2.5A/5V Output Current Capability

• Constant On-Time (COT) Control

• Power-Save Mode and PWM Mode

• 1ms Internal Soft-Start for Inrush Current Limit

• Up to 24V Adjustable Output Voltage

• Pre-biased Startup

• -40℃ to +125℃ Operating Junction Temperature Range

• Available in a Green SOIC-8 (Exposed Pad) Package

APPLICATIONS

Non-Isolated Telecommunication Buck Regulators

Secondary High Voltage Post-Regulators

Automotive Systems

Mobile base Stations

48V Industrial Systems