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PDF NCP3233 Data sheet ( Hoja de datos )
| Número de pieza | NCP3233 | |
| Descripción | High Current Synchronous Buck Converter | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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NCP3233
High Current Synchronous
Buck Converter
The NCP3233 is a high current, high efficiency voltage−mode
synchronous buck controller which operates from 3.0 V to 21 V input
and generates output voltages down to 0.6 V at up to 20 A.
Features
• Wide Input Voltage Range from 3.0 V to 21 V
• 0.6 V 1% Accurate Internal Reference Over Temperature
• Fixed Switching Frequency: 500 kHz (1 MHz and 300 kHz options
contact factory)
• External Programmable Soft−Start
• Lossless Low−side and High−side FET Current Sensing
• Output Overvoltage Protection and Undervoltage Protection
• Recoverable Overvoltage Protection
• Hiccup Mode Operation for UVP, LS OCP and TSD
• Pre−bias Start−up
• Adjustable Output Voltage
• Power Good Output
• Internal Overtemperature Protection
• Adjustable Input UVLO
• This is a Pb−Free Device
Typical Application
• Cellular Base Stations
• ASIC, FPGA, DSP and CPU Core and I/O Supplies
• Telecom and Network Equipment
• Server and Storage System
www.onsemi.com
1 40
QFN40 6x6, 0.5P
CASE 485AZ
MARKING
DIAGRAM
1
NCP3233
AWLYYWWG
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
PIN CONNECTIONS
VIN 11
VIN 12
VIN 13
VIN 14
VSW 15
PGND 16
PGND 17
PGND 18
PGND 19
PGND 20
VIN
EP42
GND
EP41
VSW
EP43
40 VCC
39 XCP
38 VINX
37 GND
36 PG
35 BST
34 VSW
33 VSW
32 VSW
31 VSW
(Top View)
ORDERING INFORMATION
Device
Package
NCP3233MNTXG QFN40
(Pb−Free)
Shipping†
2500 /
Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2016
February, 2016 − Rev. 5
1
Publication Order Number:
NCP3233/D
1 page  
VIN=3.3V
VCC=5.0V
VB
NCP3233
VIN
VINx
BST
XCP
VSW
ISET
NCP3233
VCC
FB
VB
COMP
EN
GND
PG
PGND
SS
Vout
Figure 3. Typical Application Circuit for Separate Rail in System VIN = 3.3 V and VCC = 5 V
www.onsemi.com
5
5 Page 
NCP3233
TYPICAL CHARACTERISTICS
100 100
90 90
80 80
70
60
50
0
VOUT = 1.0 V
VOUT = 1.2 V
VOUT = 1.8 V
VOUT = 2.5 V
2 46 8
VIN = 3.3 V
FSW = 500 kHz
L = 0.33 mH
10 12 14 16 18 20
LOAD CURRENT (A)
Figure 6. Efficiency vs. Load Current (VIN = 3.3 V),
Inductor: Wurth Electronics 7443320033
70
60
50
0
VOUT = 1.0 V
VOUT = 1.2 V
VOUT = 1.8 V
VOUT = 2.5 V
VOUT = 3.3 V
2 46 8
VIN = 5.0 V
FSW = 500 kHz
L = 0.33 mH
10 12 14 16 18 20
LOAD CURRENT (A)
Figure 7. Efficiency vs. Load Current (VIN = 5.0 V),
Inductor: Wurth Electronics 7443320033
100
90
80
70
60
50
0
VOUT = 1.0 V
VOUT = 1.2 V
VOUT = 1.8 V
VOUT = 2.5 V
VOUT = 3.3 V
VIN = 12.0 V
FSW = 500 kHz
L = 0.47 mH
2 4 6 8 10 12 14 16 18 20
LOAD CURRENT (A)
Figure 8. Efficiency vs. Load Current (VIN = 12.0 V),
Inductor: Wurth Electronics 7443320047
www.onsemi.com
11
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet NCP3233.PDF ] | |
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