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NCP1512 Datasheet(PDF) 1 Page - ON Semiconductor

Part No. NCP1512
Description  PWM Buck Converter
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NCP1512 Datasheet(HTML) 1 Page - ON Semiconductor

 
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© Semiconductor Components Industries, LLC, 2003
June, 2003 - Rev. 0
1
Publication Order Number:
NCP1512/D
NCP1512
Advance Information
PWM Buck Converter with a
Very Low Iq During Low
Load Conditions
The NCP1512 is a tri-mode regulator that operates either as a
Synchronized PWM Buck Converter, PWM Buck Converter with
internal oscillator or as a Pulsed Switching Regulator. If a
synchronization signal is present, the NCP1512 operates as a current
mode PWM converter with synchronous rectification. The optional
external frequency input signal allows the user to control the location
of the spurious frequency noise generated by a PWM converter. The
Pulsed Switching Regulator mode is active when the Sync Pin is
Low. The Pulsed Mode is an extremely low quiescent current Buck
Converter. NCP1512 operates in a PWM mode with an internal
oscillator when the Sync Pin is held high. The NCP1512
configuration allows the flexibility of efficient high power operation
and low input current during system sleep modes.
Features
Synchronous Rectification for Higher Efficiency in PWM Mode
Pulsed Switching Mode Operation for Low Current Consumption at
Low Loads
Integrated MOSFETs and Feedback Circuits
Cycle-by-Cycle Current Limit
Automatic Switching Between PWM, with External or Internal
Oscillator, and Pulsed Mode
Operating Frequency Range of 450 to 1000 kHz
Internal 1.0 MHz Oscillator
Thermal Limit Protection
Built-in Slope Compensation for Current Mode PWM Converter
2.5, 2.85, 3.0, 3.3 Fixed Output Voltages
Shutdown Current Consumption of 0.2 mA
Pb Free Package for Green Manufacturing
Applications
Cellular Phones and Pagers
PDA
Digital Cameras
Supplies for DSP Cores
Portable Applications
This document contains information on a new product. Specifications and information
herein are subject to change without notice.
Device
Package
Shipping
ORDERING INFORMATION
NCP1512FCT1G
TBD
9 PIN
MICRO BUMP
FC SUFFIX
CASE 499E
MARKING
DIAGRAM
PIN CONNECTIONS
(Bottom View)
Pin: A1. - GNDP
A2. - LX
A3. - VCC
B1. - SYNC
B2. - GNDA
B3. - FB
C1. - SHD
C2. - CB1
C3. - CB0
http://onsemi.com
C1
C2
C3
B1
B2
B3
A1
A2
A3
9 Pin Pb Free
Micro Bump
XXXX
YYWW
1
XX = Device Code
YY = Year
WW = Work Week


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