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NCP1571, NCP1571D, NCP1573

Table of contents:
Info of NCP1571
Info of NCP1571D
Info of NCP1573

NCP1571, NCP1571D, NCP1573 Selling Leads, Datasheet

MFG:ON Semiconductor Category:Integrated Circuits (ICs) Package Cooled:SOP-8 D/C:2002

NCP1571, NCP1571D, NCP1573 Datasheet download

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Part Number: NCP1571D

Category: Integrated Circuits (ICs)

MFG: ON Semiconductor

Package Cooled: SOP-8

D/C: 2002

Description: IC CTLR SYNCH BUCK LV 8-SOIC

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NCP1571 General Description

The NCP1571 is a low voltage buck controller. It provides the control for a DC−DC power solution producing an output voltage as low as 0.980 V over a wide current range. The NCP1571−based solution is powered from 12 V with the output derived from a 2−7 V supply. It contains all required circuitry for a synchronous NFET buck regulator using the V2 control method to achieve the fastest possible transient response and best overall regulation. NCP1571 operates at a fixed internal 200 kHz frequency and is packaged in an SOIC−8.

This device provides undervoltage lockout protection, Soft−Start, Power Good with delay, and built−in adaptive non−overlap. During undervoltage lockout, the NCP1571 controller allows the power supply output to drift down, allowing the load time to shut off. This operation distinguishes the NCP1571 from other parts in its family.

NCP1571 Maximum Ratings

Rating	Value	Unit
Operating Junction Temperature	150	°C
Storage Temperature Range	−65 to 150	°C
ESD Susceptibility (Human Body Model)	2.0	kV
Lead Temperature Soldering: Reflow: (Note 1)	230 peak	°C
Moisture Sensitivity Level	2	−
Package Thermal Resistance, SOIC−8 Junction−to−Case, RJC Junction−to−Ambient, RJA	48 165	°C/W °C/W

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. 60 second maximum above 183°C.

NCP1571 Features

• Pb−Free Package is Available
• 0.980 V ± 1.0% Reference Voltage
• V² Control Topology
• 200 ns Transient Response
• Programmable Soft−Start
• Power Good
• Programmable Power Good Delay
• 40 ns Gate Rise and Fall Times (3.3 nF Load)
• Adaptive FET Non−Overlap Time
• Fixed 200 kHz Oscillator Frequency
• Undervoltage Lockout Holds Both Gate Outputs Low
• On/Off Control Through Use of the COMP Pin
• Overvoltage Protection through Synchronous MOSFETs
• Synchronous N−Channel Buck Design
• Dual Supply, 12 V Control, 2−7 V Power Source

NCP1571 Connection Diagram

NCP1571D Parameters

Technical/Catalog Information	NCP1571D
Vendor	ON Semiconductor
Category	Integrated Circuits (ICs)
Type	Step-Down (Buck)
Number of Outputs	1
Voltage - Input	11.4 ~ 12.6 V
Voltage - Output	Adj down to 0.98V
Current - Output	-
Power - Output	-
Package / Case	8-SOIC (3.9mm Width)
Packaging	Tube
Internal Switch(s)	No
Synchronous	Yes
Rds (On)	-
Operating Temperature	0°C ~ 125°C
Frequency - Switching	200kHz
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	NCP1571D NCP1571D

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