APL5331 Datasheet PDF - Anpec Electronics
Part Number | APL5331 | |
Description | 3A Bus Termination Regulator | |
Manufacturers | Anpec Electronics | |
Logo | ||
There is a preview and APL5331 download ( pdf file ) link at the bottom of this page. Total 20 Pages |
Preview 1 page No Preview Available ! APL5331
3A Bus Termination Regulator
Features
General Description (Cont.)
• Provide Bi-direction Current
- Sourcing or Sinking Current up to 3A
• 1.25V/0.9V Output for DDR I/II Applications
www.DataSheet4U.c•om Fast Transient Response
• High Output Accuracy
- ±20mV over Load, VOUT Offset and
Temperature
• Adjustable Output Voltage by External Resistors
• Current-Limit Protection
• On-Chip Thermal Shutdown
• Shutdown for Standby or Suspend Mode
• Simple SOP-8, SOP-8-P with thermal pad,
TO-252- 5 and TO-263-5 Packages
On-chip thermal shutdown provides protection against
any combination of overload that would create ex-
cessive junction temperature. The output voltage of
APL5331 track the voltage at VREF pin. A resistor
divider connected to VIN, GND and VREF pins is
used to provide a half voltage of VIN to VREF pin. In
addition, an external ceramic capacitor and an open-
drain transistor connected to VREF pin provides soft-
start and shutdown control respectively. Pulling and
holding the VREF to GND shuts off the output. The
output of APL5331 will be high impedance after be-
ing shut down by VREF or thermal shutdown function.
Pin Configuration
Applications
• DDR I/II SDRAM Termination
• SSTL-2/3 Termination Voltage
• Applications Requiring the Regulator with
Bi-direction 3A Current Capability
General Description
The APL5331 linear regulator is designed to provide
a regulated voltage with bi-directional output current
for DDR-SDRAM termination. The APL5331 integrates
two power transistors to source or sink current up to
3A. It also incorporate current-limit, thermal shut-
down and shutdown control functions into a single
chip. Current-limit circuit limits the short-circuit
current.
VIN
GND
VREF
VOUT
1
2
3
4
8 VCNTL
7 VCNTL
TAB is VCNTL
6 VCNTL
5 VCNTL
VOUT
VREF
VCNTL
GND
VIN
SOP-8 (Top View)
TO-252-5 (Top View)
VIN
GND
VREF
VOUT
1
2
3
4
8 NC
7 NC
TAB is VCNTL
6 VCNTL
5 NC
5 VOUT
4 VREF
3 VCNTL
2 GND
1 VIN
SOP-8-P (Top View) TO-263-5 (Top View)
NC = No internal connection
= Thermal Pad
(connected to GND plane for better heat
dissipation)
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.
Copyright ANPEC Electronics Corp.
Rev. A.8 - Oct., 2003
1
www.anpec.com.tw
|
|
APL5331
Typical Application Circuit
1. VOUT=1.25V/0.9V Application
VC N TL
+ 3 .3 V
VIN
+2.5V/1.8 V
www.DataSheet4U.com
C IN
470uF
Shutdow n
GND
Q1
R1
1k
R2
1k
VIN VC N TL
VREF GND VOUT
VR EF
C SS
0 .1 uF
C CN TL
47uF
COUT : 470µF, ESR=25mΩ
R1, R2 : 1kΩ, 1%
Q1 : APM2300 AC
Note : Since R1 and R2 are very small, the voltage offset
caused by the bias current of VREF can be ignore.
2. VOUT=1.4V Application
VCNT L
+5V
VIN
+2.8V
C IN
470µF
GND
VIN VC N TL
R1
1k VR EF GN D VOU T
VRE F
R2 CSS
1k 0.1µF
CCNT L
47µF
VOU T
+1.25 V/0 .9V
-3~+3A
C OU T
470uF
GND
VO UT
+ 1.4V/
-3~+3A
COUT
470µF
GND
Copyright ANPEC Electronics Corp.
Rev. A.8 - Oct., 2003
5
www.anpec.com.tw
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for APL5331 electronic component. |
Information | Total 20 Pages | |
Link URL | [ Copy URL to Clipboard ] | |
Download | [ APL5331.PDF Datasheet ] |
Share Link :
Electronic Components Distributor
An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists. |
SparkFun Electronics | Allied Electronics | DigiKey Electronics | Arrow Electronics |
Mouser Electronics | Adafruit | Newark | Chip One Stop |
Featured Datasheets
Part Number | Description | MFRS |
APL5330 | The function is Dual Input 2A Low Dropout Regulator. Anpec Electronics | |
APL5331 | The function is 3A Bus Termination Regulator. Anpec Electronics | |
APL5332 | The function is CMOS LDO. Anpec Electronics | |
Semiconductors commonly used in industry:
1N4148 |  
BAW56 |
1N5400 |
NE555 | | ||
Quick jump to:
APL5
1N4
2N2
2SA
2SC
74H
BC
HCF
IRF
KA |