NCP5218MNR2G datasheet(3/31 Pages) ONSEMI

Part #	NCP5218MNR2G

Description	2?뭝n?? Notebook DDR Power Controller

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Manufacturer	ONSEMI [ON Semiconductor]

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NCP5218

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3

5VCC

VDDQEN

VTTEN

VCCA

VOLTAGE &

CURRENT

REFERENCE

VREF

VREFGD

CONTROL

LOGIC

−

+

VREF

VCCAGD

FAULT

TSD

THERMAL

SHUTDOWN

VCCP

VIN

CBULK

5VCC

VBOOST

BOOST

INREGDDQ

VDDQ

PWM

LOGIC

Power−

Saving

Loop

Control

−

+

ILIM

FBDDQ

SWDDQ

RL1

OCDDQ

COUT1

VDDQ

L

−

+

VCCP

NEGATIVE CURRENT

DETECTION

PGND

M3

M4

TGDDQ

VBOOST

SWDDQ

BGDDQ

PGND

−

+

UVLO

VFBDDQ

VREF

−

+

VREF

VFBDDQ

OVLO

−

+

−

+

A

VREF

COMP

FBDDQ

CZ2

CP1

CZ1

RZ2

RZ1

R1

R2

DDQREF

VTTI

VTT

COUT2

M1

M2

VTTGND

FBVTT

VTTGND

VCCA

VTTGND

VCCA

VTTGND

VTT

Regulation

Control

VDDQEN

VTTEN

SS

5VCC

PGOOD

PGND

OSC

Adaptive

Ramp

VOCDDQ

Current

Limit &

Soft−Start

−

+

SC2PWR

VDDQEN

VTTEN

INREGDDQ

−

+

SC2GND

GND

AGND

Figure 2. Detailed Block Diagram

PWM−

COMP

IREF

VDDQEN

VTTEN

VOCDDQGD

FPWM

Deadband

Control

−

+

VTTI

VTTREF

COUT3

VTTGND

PGND

−

+

VOCDDQ

VREF

VCCA

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