AP1128
3A Bus Terminator Regulator
Features
- Ideal for DDR-I and DDR-II applications
- Capable of sourcing and sinking current 1.5A/3A
- Current limiting protection
- Thermal protection
- Current-shoot-through protection
- High accuracy output voltage at full load
- Minimum external components
- Adjustable VOUT by external resistors
- Shutdown for standby or suspend mode operation
with high-impedance output
- TO252-5 and SOP-8
Pb-free
Package
General Description
AP1128 is a linear regulator designed as a
cost-effective solution for active termination of DDR
SDRAM. The converting voltage range is from 1.6V
to 6V into a desired output voltage, which is
adjusted by two external resistors. The current
sourcing and sinking capability of the regulator is up
to 1.5A/3A while the output voltage within 2%/3%.
This device provides on-chip thermal shutdown and
current limit functions for circuit tolerance of the
output fault conditions. SO-8 and TO-252-5L
packages are available for all commercial and
industrial surface mount applications.
Applications
- Mother Board DDR-SDRAM Termination
- Mother Board DDR-II Termination
- Game / Play Station
- Set Top Box
- PCI / AGP Graphics
- IPC
- SCSI-III Bus Termination
Pin Assignment
( Top View )
5
4
3
2
1
V
OUT
V
REFEN
V
CNTL(TAB)
GND
V
IN
Pin Descriptions
Pin Name
V
IN
V
CNTL
V
REFEN
GND
V
OUT
Descriptions
Power Input
Gate Drive Voltage
Reference Voltage Input and Chip
Enable
Ground
Output Voltage
TO252-5L
(Top View)
V
IN
GND
V
REFEN
V
OUT
1
2
3
4
8
7
6
5
V
CNTL
V
CNTL
V
CNTL
V
CNTL
SOP-8L
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev.1.0 Jul 20, 2005
1/7
ANACHIP [ ANACHIP CORP ]
