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NCP1582 Datasheet(PDF) 1 Page - ON Semiconductor

Part No. NCP1582
Description  Low Voltage Synchronous Buck Controllers
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP1582 Datasheet(HTML) 1 Page - ON Semiconductor

 
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© Semiconductor Components Industries, LLC, 2006
July, 2006 − Rev. 2
1
Publication Order Number:
NCP1582/D
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 8−pin 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 soft−start function. Protection features include short
circuit protection (SCP) and under voltage lockout (UVLO). The
NCP158x comes in an 8−pin 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 Soft−Start
Internal 0.7 A Gate Drivers
80% Max Duty Cycle
Input UVLO
RDS(on) Current Sensing for Short Circuit Protection
These are Pb−Free Devices
Applications
Graphics Cards
Desktop Computers
Servers/Networking
DSP and FPGA Power Supply
DC−DC Regulator Modules
BST
TG
GND
BG
COMP/DIS
FB
VCC
VIN
VOUT
Figure 1. Typical Application Diagram
PHASE
SOIC−8
D SUFFIX
CASE 751
1
8
MARKING DIAGRAM
PIN CONNECTIONS
x
= 2, 2A or 3
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G = Pb−Free Device
1
BST
8 PHASE
2
TG
3
GND
4
BG
7 COMP/DIS
6 FB
5 VCC
(Top View)
158x
ALYW
G
Device
Package
Shipping
ORDERING INFORMATION
NCP1582DR2G
SOIC−8
(Pb−Free)
2500/Tape & Reel
†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.
1
8
http://onsemi.com
NCP1582ADR2G
SOIC−8
(Pb−Free)
2500/Tape & Reel
NCP1583DR2G
SOIC−8
(Pb−Free)
2500/Tape & Reel
NCP158x
Series
Oscillator
Frequency
SCP Trip Voltage
NCP1582
350 kHz
−350 mV
NCP1582A
350 kHz
−450 mV
NCP1583
300 kHz
−350 mV


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