AMC7580-ADJDD ETC1 [List of Unclassifed Manufacturers], AMC7580-ADJDD Datasheet

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AMC7580-ADJDD

Manufacturer Part Number
AMC7580-ADJDD
Description
7A LOW DROPOUT REGULATOR
Manufacturer
ETC1 [List of Unclassifed Manufacturers]
Datasheet
AMC DOC. #: AMC7580_E (LF)
Feb 2005
Copyright © 2002, ADD Microtech Corp.
The AMC7580 is a high performance low dropout regulator
rated for 7A output current with fixed 2.5V/3.3V/5.0V and
adjustable output. It is designed for use in applications requiring
low dropout characteristics over the rated current range.
When the second low-current input voltage is applied, the drop
out voltage can be as low as 100mV at light loads and up to
500mV at maximum output current. On chip trimming adjusts
the reference voltage to 1%. These features are ideal for low
voltage microprocessor applications requiring a regulated 2.5V
to 3.6V power supply.
In addition, the AMC7580 provides the device protections
including over current and thermal shutdown. The AMC7580
series are ideal to the next generation microprocessor on
motherboards where both 5V and 3.3V are available.
Note: 1.All surface-mount packages are available in Tape & Reel. Append the letter “T” to part number (i.e.,
AMC7580-2.5 – 2.5V Fixed
AMC7580-3.3 – 3.3V Fixed
AMC7580-5.0 – 5.0V Fixed
AMC7580-ADJ – Adjustable
T
0 to 70
0 to 70
0 to 70
0 to 70
Pentium
PowerPC
Computer Add-On Cards
Other Applications Requiring Low
Dropout Voltage Over Rated Current.
A
(
2.The letter “F” is marked for Lead Free process.
O
C)
®
A
AMC7580-X.XDDT).
DD MICROTECH CORP.
®
TM
APPLICATIONS
AMC7580-X.XP
AMC7580-X.XPF (Lead Free)
AMC7580-ADJP
AMC7580-ADJPF (Lead Free)
Processor Supplies
P
Supplies
Plastic TO-220
5-pin
DESCRIPTION
ORDER INFORMATION
1
AMC7580-X.XDD
AMC7580-X.XDDF (Lead Free)
AMC7580-ADJDD
AMC7580-ADJDDF (Lead Free)
DD
PACKAGE PIN OUT
7A L
5-Pin Plastic TO-263
5-Pin Plastic TO-220
typical 500mV at 7A and low
quiescent current
surface mount 5L TO-263 packages
Input-Output differential of
Output current is excess of 7A
Remote sense pin available
Reverse battery protection
Short circuit protection
Internal thermal overload protection
Available in 5L plastic TO-220 and
Pin assignment identical to EZ1585
Plastic TO-263
5-pin
series.
Surface Mount
(Top View)
(Top View)
OW
D
FEATURES
ROPOUT
AMC7580
V
V
V
Gnd/Adj
SENSE
POWER
CONTROL
OUT
www.addmtek.com
R
EGULATOR
V
V
V
Gnd/Adj
SENSE
POWER
CONTROL
OUT

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AMC7580-ADJDD Summary of contents

Page 1

... Pin assignment identical to EZ1585 series. PACKAGE PIN OUT 5-Pin Plastic TO-220 (Top View) 5-Pin Plastic TO-263 Surface Mount (Top View) ORDER INFORMATION Plastic TO-263 DD 5-pin AMC7580-X.XDD AMC7580-X.XDDF (Lead Free) AMC7580-ADJDD AMC7580-ADJDDF (Lead Free) 1 AMC7580 ROPOUT EGULATOR FEATURES V POWER V CONTROL V OUT ...

Page 2

... AMC DOC. #: AMC7580_E (LF) Feb 2005 Power In Control In C1 33µF Ground AMC7580-X.X application schematic Power In Control In C1 33µF Ground V AMC7580-ADJ application schematic Copyright © 2002, ADD Microtech Corp TYPICAL APPLICATION 1 SENSE 5 V POWER OUT CONTROL Gnd 2 C2 10µF SENSE ...

Page 3

... AMC DOC. #: AMC7580_E (LF) Feb 2005 ABSOLUTE MAXIMUM RATINGS (Note 1) Input Voltage (Vpower) Input Voltage (Vcontrol) Operating Junction temperature Storage Temperature Range Lead temperature (Soldering, 10 seconds) Note 1: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. ...

Page 4

... AMC DOC. #: AMC7580_E (LF) Feb 2005 V POWER V CONTROL V CONTROL ADJ Copyright © 2002, ADD Microtech Corp BLOCK DIAGRAM THERMAL LIMIT 1.25V V REF AMC7580-X.X circuit schematic THERMAL LIMIT SENSE AMC7580-ADJ circuit schematic 4 AMC7580 ROPOUT EGULATOR V OUT SENSE Gnd V POWER 1.25V V REF ...

Page 5

... Note 5: These parameters, although guaranteed, are not tested in production prior to shipment Copyright © 2002, ADD Microtech Corp ELECTRICAL CHARACTERISTICS = 25°C for AMC7580 Test Conditions V = 5.0V ...

Page 6

... Grounding and Output Sensing The AMC7580-ADJ allows true Kelvin sensing for both the high and low side of the load result the voltage regulation at the load can be easily optimized. Voltage drops due to parasitic resistances between the regulator and the load can be placed inside the regulation loop ...

Page 7

... Figure 3. Remote Sensing Improves Load Regulation Stability The Circuit design used in the AMC7580 series requires the use of an output capacitor as part of the device frequency compensation. The addition of 150µF Aluminum electrolytic or a 22µF solid tantalum on the output will ensure stability for all operating conditions. In order to meet the transient performance of the processor larger value capacitors are needed ...

Page 8

... Effects Output Voltage The AMC7580-ADJ develops a 1.25V reference voltage between the Sense pin and the Adjust pin (Figure 5). Placing a resistor between these two terminals causes a constant current to flow thought R1 and down though R2 to set the output voltage. In general R1 is chosen so that this current is the specified minimum load current of 10 mA. ...

Page 9

... Feb 2005 Protection Diodes In normal operation, AMC7580 family does not need any protection diodes between the adjustment pin and the output and from the output to the input to prevent die overstress. Internal resistors are limiting the internal current paths on the ADJ pin. Therefore even with bypass capacitors on the adjust pin no protection diode is needed to ensure device safety under short-circuit conditions. The Adjust pin can be driver on a transient basis ± ...

Page 10

... AMC DOC. #: AMC7580_E (LF) Feb 2005 Maximum Power Calculation: T – T J(MAX) A(MAX D(MAX) θ C): Maximum recommended junction temperature C): Ambient temperature of the application A θ C/W): Junction-to-junction temperature thermal resistance of the package, and other heat dissipating ( O JA materials. The maximum power dissipation of a single-output regulator : = [(V )] × ...

Page 11

... AMC DOC. #: AMC7580_E (LF) Feb 2005 5-Pin Plastic TO-220 5-Pin Plastic TO-263 Copyright © 2002, ADD Microtech Corp MIN C A 0.560 B 0.380 C 0.140 A D 0.018 F 0.140 G 0.134 J 0.012 K 0.500 N R 0.080 K S 0.045 T 0.230 ...

Page 12

... AMC DOC. #: AMC7580_E (LF) Feb 2005 ADD Microtech (ADDM) reserves the right to make changes to its products or to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. ...

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