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NCP1582 Datasheet, PDF (1/16 Pages) ON Semiconductor – Low Voltage Synchronous Buck Controllers | |||
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NCP1582, NCP1582A,
NCP1583
Low Voltage Synchronous
Buck Controllers
The NCP158x is a low cost PWM controller designed to operate from
a 5 V or 12 V supply. This device is capable of producing an output
voltage as low as 0.8 V. This 8âpin device provides an optimal level of
integration to reduce size and cost of the power supply. Features include a
0.7 A gate driver and an internally set 350 kHz (NCP1582, NCP1582A)
and a 300 kHz (NCP1583) oscillator. The NCP158x also incorporates an
externally compensated transconductance error amplifier and a
programmable softâstart function. Protection features include short
circuit protection (SCP) and under voltage lockout (UVLO). The
NCP158x comes in an 8âpin SOIC package.
Features
⢠Input Voltage Range from 4.5 V to 13.2 V
⢠350 kHz (NCP1582, NCP1582A), 300 kHz (NCP1583) Internal
Oscillator
⢠Boost Pin Operates to 30 V
⢠Voltage Mode PWM Control
⢠0.8 V $1.5% Internal Reference Voltage
⢠Adjustable Output Voltage
⢠Programmable SoftâStart
⢠Internal 0.7 A Gate Drivers
⢠80% Max Duty Cycle
⢠Input UVLO
⢠RDS(on) Current Sensing for Short Circuit Protection
⢠These are PbâFree Devices
Applications
⢠Graphics Cards
⢠Desktop Computers
⢠Servers/Networking
⢠DSP and FPGA Power Supply
⢠DCâDC Regulator Modules
VIN
VCC
BST
FB
COMP/DIS
TG
PHASE
VOUT
GND
BG
8
1
http://onsemi.com
MARKING DIAGRAM
8
SOICâ8
D SUFFIX
CASE 751
158x
ALYW
G
1
x = 2, 2A or 3
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = PbâFree Device
PIN CONNECTIONS
BST 1
8 PHASE
TG 2
GND 3
BG 4
7 COMP/DIS
6 FB
5 VCC
(Top View)
NCP158x
Series
NCP1582
NCP1582A
NCP1583
Oscillator
Frequency
350 kHz
350 kHz
300 kHz
SCP Trip Voltage
â350 mV
â450 mV
â350 mV
ORDERING INFORMATION
Device
Package
Shippingâ
NCP1582DR2G SOICâ8 2500/Tape & Reel
(PbâFree)
NCP1582ADR2G SOICâ8 2500/Tape & Reel
(PbâFree)
NCP1583DR2G SOICâ8 2500/Tape & Reel
(PbâFree)
â For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
Figure 1. Typical Application Diagram
© Semiconductor Components Industries, LLC, 2006
1
July, 2006 â Rev. 2
Publication Order Number:
NCP1582/D
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