NCP1581
High Frequency Synchronous Step Down PWM Controller for Tracking Applications
The NCP1581 controller IC is desi...
NCP1581
High Frequency Synchronous Step Down PWM Controller for Tracking Applications
The NCP1581 controller IC is designed to provide a simple synchronous buck
regulator for on−board DC to DC applications in a 14−pin SOIC. The NCP1581 is designed specifically for tracking applications by providing the track input.
The NCP1581 operates at a fixed internal 400 kHz switching frequency allowing the use of small external components. The device features a programmable soft start set by an external capacitor, under−voltage lockout and output under−voltage detection that latches off the device when an output short is detected.
Features
Power up Sequencing / Tracking Enable Input Internal 400 kHz Oscillator Programmable Soft−Start Fixed Frequency Voltage Mode Voltage Mode Adaptive Deadtime This is a Pb−Free Device
Applications
Tracking Applications Game Consoles Computing Peripheral Voltage
Regulators Graphics Cards General DC to DC Converters
http://onsemi.com
MARKING
SOIC−14
DIAGRAM
14
D SUFFIX
1
CASE 751A
NCP1581G
A
= Assembly Location
AWLYWW
WL = Wafer Lot
Y
= Year
1
WW = Work Week
G
= Pb−Free Package
PIN CONNECTIONS
1
FB
NC
VP
SS
NC
COMP
VCC
NC
NC
VC
LDRV
HDRV
GND
PGND
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 13 of this data sheet.
NCP1581
Figure 1. Typical Application Circuit
© Semiconductor Components Industries, LLC, 2010
1
January,...