NCP1580

Low Voltage Synchronous Buck Controller

Overview

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.

Applications

Graphics Cards
DSP and FPGA Power Supplies
Desktop Motherboards

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

Material Composition

Product Change Notification

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Control Mode

V_CC Min (V)

V_CC Max (V)

f_SW Typ (kHz)

Reference Price

NCP1580DR2

Obsolete

SOIC-8

751-07

235

REEL

2500

Voltage Mode

4.5

13.2

350

Price N/A

NCP1580DR2G

Obsolete

SOIC-8

751-07

260

REEL

2500

Voltage Mode

4.5

13.2

350

Price N/A

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Controllers | NCP1580

Low Voltage Synchronous Buck Controller

Overview

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