NCP1521BEVB ON Semiconductor, NCP1521BEVB Datasheet

EVAL BOARD FOR NCP1521B

NCP1521BEVB

Manufacturer Part Number
NCP1521BEVB
Description
EVAL BOARD FOR NCP1521B
Manufacturer
ON Semiconductor
Datasheets

Specifications of NCP1521BEVB

Design Resources
NCP1521BEVB BOM NCP1521BEVB Gerber Files NCP1521B Eval Board Schematic
Main Purpose
DC/DC, Step Down
Outputs And Type
1, Non-Isolated
Voltage - Output
0.9 ~ 3.3 V
Current - Output
600mA
Voltage - Input
3.6V
Regulator Topology
Buck
Frequency - Switching
1.5MHz
Board Type
Fully Populated
Utilized Ic / Part
NCP1521
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
For Use With/related Products
NCP1521B
Other names
NCP1521BEVBOS
NCP1521BEVB
NCP1521B Adjustable
Output Voltage Step−Down
Converter Demonstration
Board
Prepared by: Bertrand Renaud
On Semiconductor
Overview
optimized for portable applications powered from one cell
Li−ion or three cell Alkaline/NiCd/NiMH batteries.
ranging from 0.9 V to 3.3 V. It uses synchronous rectification
to increase efficiency and reduce external part count. The
device also has a built−in 1.5 MHz (nominal) oscillator
© Semiconductor Components Industries, LLC, 2007
March, 2007 − Rev. 0
The NCP1521B step−down PWM DC−DC converter is
The part is available in adjustable output voltage versions
Figure 1. Board Picture in TSOP−5
1
which reduces component size by allowing smaller
inductors and capacitors. Automatic switching PWM/PFM
mode offers improved system efficiency.
cycle−by−cycle current limiting and thermal shutdown
protection. The NCP1521B is available in space saving, low
profile TSOP5 and UDFN6 packages.
Additional features include integrated soft−start,
Figure 2. Board Picture in mDFN−6
DEMONSTRATION NOTE
http://onsemi.com
Publication Order Number:
NCP1521BEVB/D

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NCP1521BEVB Summary of contents

Page 1

... Automatic switching PWM/PFM mode offers improved system efficiency. Additional features include integrated soft−start, cycle−by−cycle current limiting and thermal shutdown protection. The NCP1521B is available in space saving, low profile TSOP5 and UDFN6 packages. Figure 2. Board Picture in mDFN−6 1 Publication Order Number: NCP1521BEVB/D ...

Page 2

MAXIMUM RATINGS Maximum ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those indicated may adversely affect device reliability. Functional operation under absolute maximum−rated conditions is not implied. Functional operation ...

Page 3

TPVIN TP1 CON2 VIN VIN VIN EN 4.7mF GND1 GND2 JMP1 JMP2 EN TPVIN TP1 CON2 VIN VIN VIN 4.7mF GND1 GND2 JMP1 JMP2 NCP1521B – BOARD SCHEMATIC TPLX TP3 L1 U1 2.2mH SW ...

Page 4

... NA NA 2.54mm NA NA 10.16mm NA NA f1.60mm http://onsemi.com 4 line should IN Manufacturer Part Number Manufacturer ON Semiconductor NCP1521B NCP1521BU TDK C1608X5R1A475 TDK C1608X5R0J105 TDK C1608C0G1H180 std std std std std std Coilcraft LPS3008−222NL Kontek Comatel 3110014000500 Cambion 160−1724−02−05−00 TYCO/AMP 5− ...

Page 5

Board Reference: TLS−P−004−A−1106−BR Figure 5. Assembly Layer in TSOP−5 Figure 7. Part Layout in TSOP−5 NCP1521B – PCB LAYOUT Board Reference: TLS−P−003−A−0207−BR Figure 6. Assembly Layer in mDFN−6 Figure 8. Part Layout in mDFN−6 http://onsemi.com 5 ...

Page 6

Figure 9. Top Layer Routing in TSOP−5 Figure 11. Ground Layer Routing in TSOP−5 Figure 10. Top Layer Routing in mDFN−6 Figure 12. Ground Layer Routing in mDFN−6 http://onsemi.com 6 ...

Page 7

... N. American Technical Support: 800−282−9855 Toll Free USA/Canada Europe, Middle East and Africa Technical Support: Phone: 421 33 790 2910 Japan Customer Focus Center Phone: 81−3−5773−3850 http://onsemi.com 7 ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP1521BEVB/D ...

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