NCP1589AMNTWG ON Semiconductor, NCP1589AMNTWG Datasheet

NCP1589AMNTWG

Manufacturer Part Number

NCP1589AMNTWG

Description

IC CTLR SYNC BUCK 1PH LV 10-DFN

Manufacturer

ON Semiconductor

Type

Step-Down (Buck)r

Datasheet

1.NCP1589BMNTXG.pdf (10 pages)

Specifications of NCP1589AMNTWG

Internal Switch(s)

Synchronous Rectifier

Yes

Number Of Outputs

Voltage - Output

Adj to 0.8V

Current - Output

1.5A

Frequency - Switching

300kHz

Voltage - Input

4.5 ~ 13.2 V

Operating Temperature

0°C ~ 70°C

Mounting Type

Surface Mount

Package / Case

10-VFDFN Exposed Pad

Topology

Boost, Buck

Output Voltage

0.4 V

Output Current

8 mA

Switching Frequency

300 KHz

Duty Cycle (max)

80 %

Operating Supply Voltage

15 V

Supply Current

8 mA

Maximum Operating Temperature

+ 150 C

Minimum Operating Temperature

0 C

Mounting Style

SMD/SMT

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Power - Output

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NCP1589A, NCP1589B

Product Preview

Low Voltage Synchronous

Buck Controller

from a 5 V or 12 V supply. This device is capable of producing an

output voltage as low as 0.8 V. This device is capable of converting

voltage from as low as 2.5 V. This 10−pin device provides an optimal

level of integration to reduce size and cost of the power supply.

Features include a 1.5 A gate driver design and an internally set

300 kHz or 600 kHz oscillator. In addition to the 1.5 A gate drive

capability, other efficiency enhancing features of the gate driver

include adaptive non−overlap circuitry. The NCP1589A/B also

incorporates an externally compensated error amplifier. Protection

features include programmable short circuit protection and

undervoltage lockout (UVLO).

Features

•

Applications

•

This document contains information on a product under development. ON Semiconductor

reserves the right to change or discontinue this product without notice.

May, 2009 − Rev. P4

The NCP1589A/B is a low cost PWM controller designed to operate

300 kHz and 600 kHz Internal Oscillator

Boost Pin Operates to 30 V

Voltage Mode PWM Control

Precision 0.8 V Internal Reference

Adjustable Output Voltage

Internal 1.5 A Gate Drivers

80% Max Duty Cycle

Input Under Voltage Lockout

Programmable Current Limit

This is a Pb−Free Device

Graphics Cards

Desktop Computers

Servers / Networking

DSP & FPGA Power Supply

DC−DC Regulator Modules

Range from 4.5 V to 13.2 V

NCP1589AMNTWG

NCP1589BMNTWG

NCP1589AMNTXG

NCP1589BMNTXG

†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.

(Note: Microdot may be in either location)

CASE 485C

BOOT

Device

GND

DFN10

1589x

ORDERING INFORMATION

PIN CONNECTIONS

http://onsemi.com

= Specific Device Code

x = A or B

= Assembly Location

= Wafer Lot

= Year

= Work Week

= Pb−Free Device

(Top View)

(Pb−Free)

Package

MARKING DIAGRAMS

DFN10

Publication Order Number:

ALYWG

1589x

Tape & Reel

Shipping

NCP1589A/D

PGOOD

VOS

COMP/EN

3000 /

†

Related parts for NCP1589AMNTWG

NCP1589AMNTWG Summary of contents

Page 1

... PIN CONNECTIONS 1 BOOT GND (Top View) ORDERING INFORMATION Device Package NCP1589AMNTWG NCP1589BMNTWG DFN10 (Pb−Free) NCP1589AMNTXG NCP1589BMNTXG †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 1589x ALYWG G PGOOD ...

Page 2

PGOOD COMP/ 0.0015mF 17.08kW C2 0.007mF 0.014mF R1 3.878kW R3 4.12kW 74.2W PGOOD VOS 9 MONITOR OV and UV 0 ref FB 8 − ref COMP/EN ...

Page 3

PIN FUNCTION DESCRIPTION Pin No. Symbol 1 BOOT Supply rail for the floating top gate driver. To form a boost circuit, use an external diode to bring the desired input voltage to this pin (cathode connected to BOOT pin). Connect ...

Page 4

ELECTRICAL CHARACTERISTICS 1.0 nF, for min/max values unless otherwise noted Characteristic Input Voltage Range Boost Voltage Range Supply Current Quiescent Supply Current (NCP1589A) Boost Quiescent Current Undervoltage Lockout UVLO Threshold UVLO Threshold UVLO Hysteresis ...

Page 5

T , JUNCTION TEMPERATURE (°C) J Figure 3. Oscillator Frequency (F Temperature 5.3 5.0 4.7 4.4 4.1 3.8 3 JUNCTION TEMPERATURE (°C) J Figure 5. ...

Page 6

Over Current Protection (OCP) The NCP1589A/B monitors the voltage drop across the low side mosfet and uses this information to determine if there is excessive output current. The voltage across the low side mosfet is measured from the LX pin, ...

Page 7

Internal UVLO Fault 1.45 V COMP −0.7 V 700 OCP Program- mable UG V OUT FB PGOOD POR UVLO 0 NORMAL Figure 7. Typical Startup Sequence http://onsemi.com 7 3.6 V ...

Page 8

VOS PGOOD UG LG Overvoltage Feedback and Compensation The NCP1589A/B allows the output voltage to be adjusted from 0 5.0 V via an external resistor divider network. The controller will try to maintain 0 feedback ...

Page 9

Output Filter Double Pole Frequency OUT OUT F + 2.653 kHz lc c.. ESR Zero Frequency ESR OUT ...

Page 10

... DIMENSIONS: MILLIMETERS *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: ...

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