LMS1585A_15 Datasheet, PDF (1/14 Pages) Texas Instruments – LMS1585A 5A/LMS1587 5A and 3A Low Dropout Fast Response Regulators

LMS1585A , LMS1587
www.ti.com
SNVS061G – MONTH 2003 – REVISED JULY 2013
LMS1585A 5A/LMS1587 5A and 3A Low Dropout Fast Response Regulators
Check for Samples: LMS1585A , LMS1587
FEATURES
1
•234 Fast Transient Response
• Available in Adjustable, 1.5V, and 3.3V
versions
• Current Limiting and Thermal Protection
• Commercial Temp. Tange: 0°C to 125°C
• Industrial Temp. Range: −40°C to 125°C
• Line Regulation 0.005% (typical)
• Load Regulation 0.05% (typical)
• Direct Replacement for LT^® 1585A/87
APPLICATIONS
• Pentium^® processor supplies
• PowerPC^® supplies
• Other microprocessor supplies
• Low voltage logic supplies
DESCRIPTION
The LMS1585A and LMS1587 are low dropout
positive regulators with output load current of 5A and
3A respectively. Their low dropout voltage (1.2V) and
fast transient response make them an excellent
solution for low voltage microprocessor applications.
The LMS1585A/87 are available in adjustable
versions, which can set the output voltage with only
two external resistors. In addition, they are also
available in 1.5V and 3.3V fixed voltage versions⁽¹⁾.
The LMS1585A/87 circuits include a zener trimmed
bandgap reference, current limiting and thermal
shutdown. The LMS1585A/87 series are available in
KTT (TO-263) and NDE (TO-220) packages.
(1) Consult factory for other fixed voltage options.
Typical Application
V_IN _4.75V
LMS1585A/87-3.3
+ _C1
10 µF
3.3V
3A, 5A
+ _C2*
10 µF
* Required for Stability
VOUT
INPUT
OUTPUT
ADJ/GND
Figure 1. NDE (TO-220)
(Top View)
Tab is
VOUT
INPUT
OUTPUT
ADJ/GND
Figure 2. KTT (TO-263)
(Top View)
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPC is a registered trademark of IBM.
2
Pentium is a registered trademark of Intel Corporation.
3
LT is a registered trademark of Linear Technology.
4
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2003–2013, Texas Instruments Incorporated