LM3880_16 Datasheet, PDF (1/29 Pages) Texas Instruments – Simple Power Sequencer

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LM3880, LM3880-Q1
SNVS451K – AUGUST 2006 – REVISED FEBRUARY 2016
LM3880/LM3880-Q1 Simple Power Sequencer
1 Features
•1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade: -40°C to 125°C
Operating Junction Temperature Range
• Easiest Method to Sequence Rails
• Power-Up and Power-Down Control
• Tiny Footprint
• Low Quiescent Current of 25 µA
• Input Voltage Range of 2.7 V to 5.5 V
• Standard Timing Options Available
• Customization of Timing and Sequence Available
Through Factory Programmability
2 Applications
• Advanced Driver Assistance Systems (ADAS)
• Automotive Camera Modules
• Security Cameras
• Servers
• Networking Elements
• FPGA Sequencing
• Microprocessor and Microcontroller Sequencing
• Multiple Supply Sequencing
3 Description
The LM3880 Simple Power Supply Sequencer offers
the easiest method to control power up sequencing
and power down sequencing of multiple Independent
voltage rails. By staggering the startup sequence, it is
possible to avoid latch conditions or large in-rush
currents that can affect the reliability of the system.
Available in a 6-pin SOT-23-6 package, the Simple
Sequencer contains a precision enable pin and three
open-drain output flags. When the LM3880 is
enabled, the three output flags will sequentially
release, after individual time delays, thus permitting
the connected power supplies to start up. The output
flags will follow a reverse sequence during power
down to avoid latch conditions.
EPROM capability allows every delay and sequence
to be fully adjustable. Contact Texas Instruments if a
nonstandard configuration is required.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LM3880
LM3880-Q1
DBV SOT (6)
2.90 mm x 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simple Power Supply Sequencing
Power Supply 1
Input
Supply
Enable
VCC
Enable
FLAG 1
EN
FLAG 2
FLAG 3
GND
Power Supply 2
Enable
Power Supply 3
Enable
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.