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NCP81045 PDF даташит

Спецификация NCP81045 изготовлена ​​​​«ON Semiconductor» и имеет функцию, называемую «Single Synchronous Step-Down Controller».

Детали детали

Номер произв NCP81045
Описание Single Synchronous Step-Down Controller
Производители ON Semiconductor
логотип ON Semiconductor логотип 

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NCP81045 Даташит, Описание, Даташиты
NCP81045
Product Preview
Single Synchronous
Step-Down Controller
The NCP81045 is a synchronous stepdown controller for high
performance systems batterypower systems. The NCP81045
includes a high efficiency PWM controller. A pin is provided to allow
two devices in interleaved operation. An internal power good voltage
monitor tracks the SMPS output. NCP81045 also features softstart
sequence, UVLO for VCC and switcher, overvoltage protection,
overcurrent protection, undervoltage protection and thermal
shutdown. The IC is packaged in QFN16.
Features
0.8% accuracy 0.8 V Reference
4.5 V to 27 V Battery/Adaptor Voltage Range
Adjustable Output Voltage Range: 0.8 V to 3.3 V
Synchronization Interleaving between Two NCP81045s
Skip Mode for Power Saving Operation at Light Load
Lossless Inductor Current Sensing
Programmable TransientResponseEnhancement (TRE) Control
Programmable Adaptive Voltage Positioning (AVP)
Input Supply Feedforward Control
Internal SoftStart
Integrated Output Discharge (SoftStop)
Buildin Adaptive Gate Drivers
PGOOD Indication
Overvoltage, Undervoltage and Overcurrent Protections
Thermal Shutdown
QFN16 Package
These Devices are PbFree and are RoHS Compliant
Typical Applications
Notebook Application
System Power
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
http://onsemi.com
MARKING
DIAGRAM
16
1
1
QFN16
CASE 485AP
NCP81045
ALYWG
G
NCP81045
A
L
Y
W
G
Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbFree Package
(Note: Microdot may be in either location)
16 15 14 13
VIN 1
VCC 2
SYN 3
EN 4
NCP81045
12 VCCP
11 DL/TRESET
10 PGND
9 CS+
5678
QFN16
(Top View)
ORDERING INFORMATION
Device
Package
Shipping
NCP81045MNTXG 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, 2012
October, 2012 Rev. P0
1
Publication Order Number:
NCP81045/D









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NCP81045 Даташит, Описание, Даташиты
NCP81045
TPAD 17
16 15
PGOOD
14
AGND
Thermal
Shutdown
OSC
VIN 1
UVLO
Control
VCC
UVLO
Control
VCC 2
ENABLE
MASTER
SLAVE
NCP81045
Control Logic, Protection,
RAMP Generator and PWM Logic
13
IDRP/OCP
Detection
Over Current
Detector
AVP
Control
Low Side
Driver
12 VCCP
11 DL/TRESET
SYN 3
CDIFF
10 PGND
EN 4
Level
Control
Current
Sense
Amplifier
9 CS+
VREF
Error
Amplifier
5
6
7
8
Figure 1. Detail Block Diagram
http://onsemi.com
2









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NCP81045 Даташит, Описание, Даташиты
NCP81045
5V
PGOOD
EN_SKIP
VIN
VCC
SYN
EN_SKIP
1
2
3
4
16 15 14 13
12 VCCP
NCP81045
AGND
11 DL/TRESET
10 PGND
9 CS+
5678
VIN
VOUT
GND
Figure 2. Typical Application Circuit (Single Device Operation)
http://onsemi.com
3










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