# GS-R1012 Step-Down Switching Regulator

## Overview
A 12V/10A step-down DC-DC converter with a wide input voltage range (18-36V). Designed for PCB or chassis mounting.

## Features
· Wide input voltage range: 18 to 36V
· High efficiency: 90% minimum
· Parallel operation with current sharing
· Synchronization capability
· Remote inhibit/enable function
· Remote load voltage sense
· Output short-circuit protection
· Soft-start functionality

## Electrical Characteristics
· Input Voltage (Vi): 18-36V
· Input Current (li): 5.6A @ 24V, 10A
· Enable Voltage (Vien): 1.2V
· Inhibit Voltage (Viinh): 2-24V
· Output Voltage (Vo): 12V
· Output Ripple Voltage (Vor): 150mVpp
· Output Current (Io): 10A
· Output Current Limiting (Iol): 10.5-11.5A
· Efficiency (η): 90-92% @ 10A output

## Pin Description
· 1, 10, 11: GND (Input/Output Return)
· 2: Inhibit (Enable if <1.2V, Inhibit if 2-24V)
· 3: +Vin (DC Input, max 36V)
· 4, 5: +Vout (+12V Output)
· 6: +Sense (Remote Sense High Side)
· 7: Sync (Synchronization Output)
· 8: Parallel (Parallel Operation)
· 9: -Sense (Remote Sense Return)

## User Notes
· Input Voltage: Use a 1000µF/50V capacitor near the input.
· Soft-start: Output voltage rise time is typically 15ms.
· Remote Sensing: Compensates for voltage drop in load wires (max 500mV total).
· Parallel Operation: Supports parallel connection for increased output power (max 10% current deviation).
· Protection: Protected against short circuits and overcurrent.

## Thermal Considerations
· Thermal Resistance (Rth): 7.5 °C/W
· Maximum Case Temperature: 75°C
· External heat sink may be required depending on operating conditions and power dissipation. Consult datasheet figures for heat sink selection.