NCP1580 Series

Low Voltage Synchronous Buck Controller

Catalog

Low Voltage Synchronous Buck Controller

Part	Control Features	Topology	Frequency - Switching	Synchronous Rectifier	Output Type	Output Phases	Package / Case	Package / Case [y]	Package / Case [x]	Function	Number of Outputs	Duty Cycle (Max) [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Clock Sync	Output Configuration	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Supplier Device Package
ON Semiconductor NCP1580DR2G	Phase Control	Buck	350 kHz		Transistor Driver	1	8-SOIC	3.9 mm	0.154 in	Step-Down	1	90 %	85 °C	-40 °C	Surface Mount		Positive	4.5 V	13.2 V	8-SOIC

Catalog

Low Voltage Synchronous Buck Controller

Key Features

• Input Voltage Range from 4.5 to 13.2V

• 350 kHZ Internal Oscillator

• Boost Pin Operates to 26.5V

• Voltage Mode PWM Control

• 0.8V +/- 1.5% Internal Reference Voltage

• Adjustable Output Voltage

• Internal Soft-Start

• Internal 1.5A Gate Drivers

• Adaptive Non-Overlap Circuit

• 90% Max Duty Cycle

• Input UVLO

• Overtemperature Protection

• Fully Specified over -40 degree C to 85 degree C

• Pb-Free Package is Available

Description

The NCP1580 is a voltage mode PWM controller designed to operate from a 5.0V or 12V supply and produce an output voltage as low as 0.8V. This 8-pin device provides an optimal level of integration to reduce size and cost of the power supply. The NCP1580 has a fixed 350 kHz oscillator and soft-start function. The NCP1580 provides a 1.5A floating gate driver design to drive N-Channel MOSFETs in a synchronous configuration. Adaptive non-overlap circuitry reduces switching losses by preventing simultaneous conduction of both outputs. Protection features include thermal shutdown and undervoltage lockout (UVLO). The NCP1580 is available in a 8-pin SOIC package.