3A Bus Termination Regulator

Copyright

© ANPEC Electronics Corp.

Rev. A.1 - Feb., 2008

APL5333

www.anpec.com.tw

1

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and

advise customers to obtain the latest version of relevant information to verify before placing orders.

•

Sourcing and Sinking Current up to 3A

•

Wide Input Voltage Range: 1.2V to 3.6V

•

VTT and VTTREF Voltage Tracks at Half the

VREF Voltage

•

VTT and VTTREF Voltage with ±20mV Accuracy

•

Excellent Load Transient Response

- Droop Compensation

- Fast Loop Response

•

Stable with 20

µF Ceramic Output Capacitors

•

Current Limit Protection

•

Thermal Shutdown Protection

•

Power-On-Reset Function on VCNTL

•

S3, S5 Input Signals for ACPI States

•

Available in a Thermal Enhanced MSOP-10P

Package

•

Lead Free Available (RoHS Compliant)

Features

Applications

•

DDR 1/2/3 Memory Termination

•

SSTL-2, STL-18 and HSTL Termination

General Description

The APL5333 linear regulator is designed to provide a

regulated voltage with bi-directional output current for

DDR-SDRAM termination. The APL5333 integrates two

power transistors to source or sink current up to 3A. It

also incorporate current-limit, thermal shutdown into a

single chip.

The output voltage of APL5333 tracks the voltage at VREF

pin. An internal resistor divider is used to provide a half

voltage of VREF for VTTREF and VTT Voltage. The VTT

output voltage is only requiring 20

µF of ceramic output

capacitance for stability and fast transient response. The

S3 and S5 pins provide the sleep state for VTT (S3 state)

and suspend state (S4/S5 state) for device, when S5 and

S3 are both pulled low the device provides the soft-off for

VTT and VTTREF. The MSOP-10P package with a copper

pad is available which provides excellent thermal

impedance.

Simplified Application Circuit

V

TT

VREF

VTT

VIN

PGND

VTTSNS

VCNTL

S5

GND

S3

VTTREF

APL5333

1

2

3

4

5

6

9

8

7

10

V

IN

V

CNTL

5V

Ordering and Marking Information

Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte in plate termination finish; which are fully compliant

with RoHS and compatible with both SnPb and lead-free soldering operations. ANPEC lead-free products meet or exceed the lead-free requirements of

IPC/JEDEC J STD-020C for MSL classification at lead-free peak reflow temperature.

Package Code

XA : MSOP-10P

Temperature Range

Handling Code

TR : Tape & Reel

Lead Free Code

L : Lead Free Device

APL5333

Handling Code

Temperature Range

Package Code

L5333

XXX

XX

APL5333 XA :

X - Date Code

Lead Free Code