NCP5331
Two鈭扨hase PWM
Controller with Integrated
Gate Drivers
The NCP5331 is a second-generation, two-phase, buck controller
that incorporates advanced control functions to power 64-bit AMD
Athlont processors and low voltage, high current power supplies.
Proprietary multiphase architecture guarantees balanced load-current
sharing, reduces output voltage and input current ripple, decreases
filter requirements and inductor values, and increases output current
slew rate. Traditional Enhanced V
2
t
has been combined with an
internal PWM ramp and voltage feedback directly from V
CORE
to the
internal PWM comparator. These features and enhancements deliver
the fastest transient response, reduce output voltage jitter, provide
greater design flexibility and portability, and minimize overall
solution cost.
Advanced features include adjustable power- good delay,
programmable overcurrent shutdown timer, superior overvoltage
protection (OVP), and differential remote sensing. An innovative
overvoltage protection (OVP) scheme safeguards the CPU during
extreme situations including power up with a shorted upper MOSFET,
shorting of an upper MOSFET during normal operation, and loss of
the voltage feedback signal, COREFB+.
Features
http://onsemi.com
MARKING
DIAGRAMS
LQFP-32
FT SUFFIX
CASE 873A
A
WL
YY
WW
NCP5331
AWLYYWW
32
1
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION
Device
NCP5331FTR2
Package
LQFP-32
Shipping
2000 Tape & Reel
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Reduced SMT Package Size (7 mm
脳
7 mm)
Enhanced V
2
Control Method
Four On-Board Gate Drivers
Internal PWM Ramps
Differential Remote Voltage Sense
Fast Feedback Pin (V
FFB
)
5-Bit DAC with 0.8% System Tolerance
Timed Hiccup Mode Current Limit
Power Good Output with Programmable Delay
Advanced Overvoltage Protection (OVP)
Adjustable Output Voltage Positioning
150 kHz to 600 kHz Operation Set by Resistor
鈥淟ossless鈥?Current Sensing through Output Inductors
Independent Current Sense Amplifiers
5.0 V, 2 mA Reference Output
漏
Semiconductor Components Industries, LLC, 2003
1
June, 2003 - Rev. 11
Publication Order Number:
NCP5331/D
next
NCP5331FTR2 產(chǎn)品屬性
2,000
集成電路 (IC)
PMIC - 穩(wěn)壓器 - 專用型
-
控制器,AMD Athlon?
9 V ~ 14 V
2
5V
0°C ~ 70°C
表面貼裝
32-LQFP
32-LQFP(7x7)
帶卷 (TR)
NCP5331FTR2OSTR
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