مدار مجتمع (آی سی) آی‌سی مدیریت توان (پی‌ام‌آی‌سی) رگولاتور ولتاژ خطی و کم‌افت (ال دی او)

Product Attributes

Introduction

The COS2991 is a five-pin, low-dropout, 1-A negative adjustable voltage regulator and negative power supply, ideally suited for a dual-supply system when using together with COS29152 series. The device may also be used as an adjustable current-sink load. The COS2991 provides an output voltage range between -3V to -24V, and features a turn off pin for remote shutdown capability. The COS2991 provides a low dropout voltage, low quiescent current and low temperature coefficient precision reference. The dropout voltage at 1-A load current is typically 0.6V and an ensured worst-case maximum of 1V over the entire operating temperature range. The quiescent current is typically 1mA with a 1-A load current and an input-output voltage differential greater than 3V. A unique circuit design of the internal bias supply limits the quiescent current to only 9 mA (typical) when the regulator is in the dropout mode (Vout - Vin ≤3V). The COS2991 are fully protected against overcurrent faults and over temperature operation with a hysteresis to enhance the reliability of the device when inadvertently overloaded for extended periods.

Features

• Output Voltage Adjustable from -3V to -24V
• Output Current in Excess of 1A
• Low Quiescent Current
• Drop-out Voltage Typically 0.6V at 1A Load
• Internal Short Circuit Current Limit
• Internal Thermal Shutdown with Hysteresis
• CMOS, TTL Compatible ON/OFF Switch
• Extended Temperature Ranges From -40°C to +125°C
• Available in Green TO-263, TO-247 and TO-220 Packages

Applications

• Industrial
• Battery-Powered Equipment
• High-Efficiency Linear Power Supplies
• Instrumentation
• High-Efficiency Post-Regulator for Switching Supply