http://www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf




  ON Semiconductor Electronic Components Datasheet  

NCP5230 Datasheet

Precise Low Voltage Synchronous Buck Controller

No Preview Available !

NCP5230 pdf
NCP5230
Precise Low Voltage
Synchronous Buck
Controller with Power
Saving Mode
The NCP5230 is a simple single phase solution with differential
phase current sensing, power saving operation, and gate drivers to
provide accurately regulated power.
The adaptive non overlap gate drive and power saving operation
circuit provide a low switching loss and high efficiency solution for
server, notebook, and desktop systems. A high performance
operational error amplifier is provided to simplify compensation of the
system. The NCP5230 features also include softstart sequence,
accurate overvoltage and over current protection, UVLO for VCC and
VCCP, and thermal shutdown.
Features
High Performance Operational Error Amplifier
Internal SoftStart/Stop
±0.5% Internal Voltage Accuracy, 0.8 V voltage reference
OCP accuracy, Four Reentry Times Before Latch
“Lossless” Differential Inductor Current Sensing
Internal High Precision Current Sensing Amplifier
Oscillator Frequency Range of 100 kHz 1000 kHz
20 ns Adaptive FET Nonoverlap Time of Internal Gate Driver
5.0 V to 12 V Operation
Support 1.5 V to 19 V Vin
Vout from 0.8 V to 3.3 V (5 V with 12 VCC)
Chip Enable through OSC pin
Latched Over Voltage Protection (OVP)
Internally Fixed OCP Threshold
Guaranteed Startup Into PreCharged Loads
Thermally Compensated Current Monitoring
Thermal Shutdown Protection
Integrated MOSFET Drivers
Integrated BOOST Diode with internal Rbst = 2.2 W
Automatic Power Saving Mode to Maximize Efficiency During Light
Load Operation
Sync Function
Remote Ground Sensing
This is a PbFree Device*
Applications
Desktop and Server Systems
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
http://onsemi.com
MARKING
DIAGRAMS
QFN16
5230
1
CASE 485G
ALYWG
G
5230
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbFree Package
(*Note: Microdot may be in either location)
PIN CONNECTIONS
VCCP 1
LG 2
LX 3
BOOT 4
16 15 14 13
12 CSN/VO
11 FBG
10 VSEN
9 FB
5678
(Top View)
ORDERING INFORMATION
Device
Package
Shipping
NCP5230MNTWG QFN16 3000 / Tape & Reel
(PbFree)
†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, 2013
January, 2013 Rev. 1
1
Publication Order Number:
NCP5230/D


  ON Semiconductor Electronic Components Datasheet  

NCP5230 Datasheet

Precise Low Voltage Synchronous Buck Controller

No Preview Available !

NCP5230 pdf
NCP5230
CSP 13
CSN/VO 12
+ CDIFF
Current Sense
Amplifier
Over Current
Detector
COMP 8
FBG 11
+
0.8V Error Amplifier
FB 9
VREF*75%
VREF*125%
UVP
+
+ OVP
15 6
2.2 W
Control Logic,
Protection,
RAMP
Generator and
PWM Logic
OSC
UVLO
Control
VSEN 10
ROSC/EN 14
1.24V
SYNC 7
Programmable
OSC
VREF*50%
OVP,
UNLATCHED
+
Figure 1. NCP5230 BLOCK DIAGRAM
4 BOOT
5 UG
3 LX
1 VCCP
2 LG
16 GND
PIN DESCRIPTIONS
Pin No.
Symbol
1 VCCP
2 LG
3 LX
4 BOOT
5 UG
6 PGOOD
7 SYNC
8 COMP
9 FB
10 VSEN
11 FBG
12 CSN/VO
13 CSP
14 ROSC/EN
15 VCC
16 GND
THERMAL PAD
Description
Power supply for bottom gate MOSFET drivers
Bottom gate MOSFET driver pin
Switch node
Supply rail for the floating top gate driver
Top gate MOSFET driver pin
Power Good. It is an opendrain output, set free after SS (with 3x clock delay) as long as the output
voltage monitored through VSEN is within specifications.
Synchronization Pin. The controller synchronizes on the falling edge of a square wave provided to
this pin. Short to GND if not used.
Output of the error amplifier
Inverting input to the error amplifier
Output Voltage Sense
Remote Ground Sense
Inductor differential sense inverting input
Inductor differential sense noninverting input
Programs the switching frequency; EN: Pulllow to disable the device
Supply rail for the controller internal circuitry
Ground reference
Connects with the silicon substrate for good thermal contact with the PCB. Connect to GND plane.
http://onsemi.com
2


Part Number NCP5230
Description Precise Low Voltage Synchronous Buck Controller
Maker ON Semiconductor
Total Page 12 Pages
PDF Download
NCP5230 pdf
Download PDF File
NCP5230 pdf
View for Mobile



Buy Electronic Components




Related Datasheet

1 NCP5230 Precise Low Voltage Synchronous Buck Controller ON Semiconductor
ON Semiconductor
NCP5230 pdf






Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components