NCP5212A_09 Datasheet, PDF (1/19 Pages) ON Semiconductor – Single Synchronous Step-Down Controller

NCP5212A, NCP5212T
Single Synchronous
Step-Down Controller
The NCP5212A/NCP5212T is a synchronous stepdown controller
for high performance systems battery−power systems. The
NCP5212A/NCP5212T 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.
NCP5212A/NCP5212T 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
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 NCP5212A/NCP5212Ts
• Skip Mode for Power Saving Operation at Light Load
• 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
• QFN16 Package
• These Devices are Pb−Free and are RoHS Compliant
Typical Applications
• Notebook Application
• System Power
http://onsemi.com
1
QFN16
CASE 485AP
MARKING DIAGRAMS
16
1
N5212
ALYWG
G
16
1
5212T
ALYWG
G
NCP5212A
NCP5212T
N5212/5212T Device Code
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= Pb−Free Package
(Note: Microdot may be in either location)
16 15 14 13
VIN 1
VCC 2
SYN 3
EN 4
NCP5212A/
NCP5212T
12 VCCP
11 DL/TRESET
10 PGND
9 CS+
5678
© Semiconductor Components Industries, LLC, 2009
August, 2009 − Rev. 3
QFN16
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 18 of this data sheet.
1
Publication Order Number:
NCP5212A/D