GENERAL DESCRIPTION
The NCP1587 and NCP1587A are low cost PWM controllers
designed to operate from a 5V or 12V supply.These
devices are capable of producing an output voltage
as low as 0.8 V. These 8−pin devices provide an optimal
level of integration to reduce size and cost of the power
supply.The NCP1587/A provide a 1 A gate driver design
and an internally set 275kHz (NCP1587) and 200kHz (NCP1587A)
oscillator.In addition to the 1A gate drive capability,
other efficiency enhancing features of the gate driver
include adaptive non−overlap circuitry. The devices also
incorporate an externally compensated error amplifier and
a capacitor programmable soft−start function.
Protection features include programmable short circuit
protection and under voltage lockout (UVLO). The NCP1587/A
comes in an 8−pin SOIC package.
Features
Input Voltage Range from 4.5 to 13.2V
275kHz (NCP1587) and 200kHz (NCP1587A) Internal Oscillator
Boost Pin Operates to 30V
Voltage Mode PWM Control
0.8V ±1.0% Internal Reference Voltage
Adjustable Output Voltage
Capacitor Programmable Soft−Start
Internal 1A Gate Drivers
80% Max Duty Cycle
Input Under Voltage Lockout
Programmable Current Limit
This is a Pb−Free Device
Applications
Graphics Cards
Desktop Computers
Servers / Networking
DSP & FPGA Power Supply
DC−DC Regulator Modules
PIN CONNECTIONS
P/N Package
NCP1587DR2G SOIC−8
NCP1587ADR2G SOIC−8
FROM: Company Name: Aunytor Electronic (HK) Co.,Ltd
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