AP1270 Advanced Power Electronics Corp., AP1270 Datasheet

AP1270

Manufacturer Part Number
AP1270
Description
Manufacturer
Advanced Power Electronics Corp.
Datasheet

Specifications of AP1270

Vin(max)
2.5V
Max. Current
3A
Current Limit
3A
Quiescent Current Typ.
50mA
Package
TO-252-5L; ESOP-8

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AP1270AMP-HF
Manufacturer:
APEC/富鼎
Quantity:
20 000
Company:
Part Number:
AP1270AMP-HF
Quantity:
2 894
Company:
Part Number:
AP1270AMP-HF
Quantity:
2 894
Data and specifications subject to change without notice
FEATURES
APPLICATION
TYPICAL APPLICATION
Ideal for DDR-I, DDR-II and DDR-III V
Sink and Source 3A 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 TO-252-5L & ESOP-8 Packages
V
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
IN
and V
Advanced Power
Electronics Corp.
VIN=2.5V/1.8V/1.5V
CNTL
VCNTL=3.3V
No Power Sequence Issue
R
C
C
1
OUT,min
SS
= R
= 1µF, C
2
EN
= 100KΩ, R
= 10uF (Ceramic) + 1000uF under the worst case testing condition
2N7002
IN
= 470µF(Low ESR), C
3A SINK/SOURCE BUS TERMINATION REGULATOR
TT
TT
= 50Ω / 33Ω / 25Ω
R
R
Applications
1
2
C
SS
REFEN
CNTL
VIN
= 47µF
AP1270
GND
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, SCSI-2 and SCSI-3
etc. devices requirements. The regulator is capable of
actively sinking or sourcing up to 3A while regulating an
output voltage to within 40mV. The output termination
voltage cab be tightly regulated to track 1/2V
external voltage divider resistors or the desired output
voltage can be pro-grammed by externally forcing the
REFEN pin voltage.
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.
ESOP-8 (Exposed Pad) surface mount packages.
VCNTL
DESCRIPTIOON
VOUT
The AP1270 also incorporates a high-speed
The AP1270 are available in the TO-252-5L &
The AP1270 is a simple, cost-effective and high-
C
IN
C
C
CNTL
OUT
R
DUMMY
R
TT
AP1270
DDQ
201011055
by two
1

Related parts for AP1270

AP1270 Summary of contents

Page 1

... R 1 AP1270 REFEN C SS GND 50Ω / 33Ω / 25Ω 470µF(Low ESR 47µF CNTL The AP1270 is a simple, cost-effective and high- The AP1270 also incorporates a high-speed The AP1270 are available in the TO-252-5L & CNTL R VOUT C OUT R DUMMY AP1270 ...

Page 2

... OUT REFEN Side View ) ( Top View ) VCNTL Metal Tab 5 NC VCNTL TO-252- C/W thja C, unless otherwise specified) MIN TYP - - 50 = 180Ω LOAD -20 -20 -20 3.2 130 160 - 30 0. AP1270 5 VOUT 4 VREFEN 3 VCNTL 2 GND 1 VIN UNITS MAX 1 2 0.2 2 ...

Page 3

... REFEN APPLICATION INFORMATION Input Capacitor and Layout Consideration Place the input bypass capacitor as close as possible to the AP1270. A low ESR capacitor larger than 470uF is recommended for the input capacitor. Use short and wide traces to minimize parasitic resistance and inductance. Inappropriate layout may result in large parasitic inductance and cause undesired oscillation between AP1270 and the preceding powe converter ...

Page 4

... There are two reasons doing this design; one is for output voltage soft-start while another is for noise immunity. Thermal Consideration AP1270MP regulators have internal thermal limiting circuitry designed to protect the device during overload conditions.For continued operation, do not exceed maximum operation junction o temperature 125 C ...

Page 5

... Supplied by a regulator REF Shutdown Threshold vs. Temperature Turn On Turn Off -50 - Temperature ( C) = 3.3V 10mA, Source test CNTL OUT V Current vs. Temperature CNTL V =1.8V, V =5V IN CNTL V =1.8V, V =3.3V IN CNTL -50 - Temperature ( 0A, Source test OUT AP1270 100 125 100 125 5 ...

Page 6

... Advanced Power Electronics Corp. TYPICAL PERFORMANCE CHARACTERISTICS Source Current Limit vs. Temperature 5.5 5 4.5 4 -50 - Temperature ( V =1.8V, V =3.3V IN CNTL V =1.8V, V =5V IN CNTL 75 100 125 o C) Sink Current Limit vs. Temperature 5.5 5 4.5 4 3.5 V =1.8V =1.8V -50 - Temperature ( C) AP1270 =3.3V CNTL =5V CNTL 100 125 6 ...

Page 7

... Advanced Power Electronics Corp. MARKING INFORMATION ESOP-8 1270MP YWWSSS TO-252-5L 1270H LOGO YWWSSS Part Number Package Code Date Code (YWWSSS) Y:Last Digit Of The Year WW:Week SSS:Sequence Part Number Package Code Date Code (YWWSSS) Y:Last Digit Of The Year WW:Week SSS:Sequence AP1270 7 ...

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