ap1250cmp APEC, ap1250cmp Datasheet

ap1250cmp

Manufacturer Part Number

ap1250cmp

Description

2a Sink/source Bus Termination Regulator

Manufacturer

APEC

Datasheet

1.AP1250CMP.pdf (5 pages)

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H&T Electronics

Part Number:

AP1250CMP

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2A Sink/Source Bus Termination Regulator

Description

The AP1250CMP is a simple, cost-effective and

high-speed linear regulator designed to generate

termination voltage in double data rate (DDR)

memory system to comply with the JEDEC SSTL_2

and SSTL_18 or other specific interfaces such as

HSTL,

requirements. The regulator is capable of actively

sinking or sourcing up to 2A while regulating an

output voltage to within 40mV. The output

termination voltage cab be tightly regulated to track

1/2V

the desired output voltage can be pro-grammed by

externally forcing the REFEN pin voltage.

The AP1250CMP also incorporates a high-speed

differential amplifier to provide ultra-fast response in

line/load transient. Other features include extremely

low initial offset voltage, excellent load regulation,

current limiting in bi-directions and on-chip thermal

shut-down protection.

The AP1250CMP are available in the ESOP-8

(Exposed Pad) surface mount packages.

Pin Configuration

Pin Description

GND

REFEN

Pin Name

CNTL

OUT

DDQ

by two external voltage divider resistors or

SCSI-2

Advanced Power

Electronics Corp.

Power Input

Ground

Gate Drive Voltage

Reference Voltage input and Chip Enable

Output Voltage

and

SCSI-3

Pin function

etc.

devices

Features

Application

Block Diagram

Ideal for DDR-I, DDR-II and DDR-III V

Sink and Source 2A Continuous Current

Integrated Power MOSFETs

Generates Termination Voltage for SSTL_2, SSTL

_18, HSTL, SCSI-2 and SCSI-3 Interfaces.

High Accuracy Output Voltage at Full-Load

Output Adjustment by Two External Resistors

Low External Component Count

Shutdown for Suspend to RAM (STR) Functionality

with High-Impedance Output

Current Limiting Protection

On-Chip Thermal Protection

Available in ESOP-8 (Exposed Pad) Packages

RoHS Compliant and 100% Lead (Pb)-Free

Desktop PCs, Notebooks, and Workstations

Graphics Card Memory Termination

Set Top Boxes, Digital TVs, Printers

Embedded Systems

Active Termination Buses

DDR-I, DDR-II and DDR-III Memory Systems

and V

CNTL

No Power Sequence Issue

AP1250CMP

200801091

Applications

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