NCP5217A_11 Datasheet, PDF (1/16 Pages) ON Semiconductor – Single Synchronous Step-Down Controller

NCP5217A
Single Synchronous
Step-Down Controller
The NCP5217A is a synchronous step−down controller for high
performance systems battery−power systems. The NCP5217A
includes a high efficiency PWM controller. A pin is provided to enable
or disable forced PWM mode of operation. An internal power good
voltage monitor tracks the SMPS output. NCP5217A also features
soft−start sequence, UVLO for V_CC and switcher, overvoltage
protection, overcurrent protection, undervoltage protection and
thermal shutdown. The IC is packaged in QFN14.
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
• Selectable Power Saving Mode / Force PWM Mode
• Lossless Inductor Current Sensing
• Programmable Transient−Response−Enhancement (TRE) Control
• Programmable Adaptive Voltage Positioning (AVP)
• Input Supply Feedforward Control
• Internal Soft−Start
• Integrated Output Discharge (Soft−Stop)
• Build−in Adaptive Gate Drivers
• PGOOD Indication
• Overvoltage, Undervoltage and Overcurrent Protections
• Thermal Shutdown
• QFN14 Package
• These Devices are Pb−Free and are RoHS Compliant
Typical Applications
• Notebook Application
• System Power
http://onsemi.com
MARKING
DIAGRAM
QFN14
CASE 485AL
N5217
ALYWG
G
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
G = Pb−Free Package
(Note: Microdot may be in either location)
EN_SKIP
BST
1
14
CS+ 2
CS−/Vo 3
COMP 4
FB ₅
PGOOD ₆
13 DH
12 SWN
11 IDRP/OCP
10 VCC
9 DL/TRESET
7
AGND
8
PGND
QFN14
(Top View)
ORDERING INFORMATION
Device
Package
Shipping^†
NCP5217AMNTXG QFN14
(Pb−Free)
3000 /
Tape & Reel
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2011
1
May, 2011 − Rev. 2
Publication Order Number:
NCP5217A/D