MIC68401 Datasheet, PDF (3/13 Pages) Micrel Semiconductor – 4A Sequencing LDO with Tracking and Ramp Control™

Micrel, Inc.
Ordering Information
Part Number
MIC68401YML
Output Current
4.0A
Output Voltage
Adjustable
Junction Temperature Range
–40°C to +125°C
MIC68401
Package
16-Pin 4mm × 4mm QFN
Pin Configuration
16-Pin 4mm × 4mm QFN
Pin Description
Pin Number
1, 2, 15, 16
3
4
5
6, 14
7, 8, Tab
9
10 (ADJ)
11, 12, 13
Pin Name
IN
DELAY
RC
EN
NC
GND
POR
ADJ
OUT
Pin Function
Input: Input voltage supply pin. Connect a X7R type ceramic capacitor to ground to bypass the input
supply. Use a minimum 10µF capacitance.
Delay: A capacitor to ground sets the time of the internal delay timer. This timer delays the power-on
reset (POR) output at turn-on.
Ramp Control: May be voltage driven for tracking applications or a capacitor to ground will set the
turn on slew rate of output voltage during start-up.
Enable (Input): CMOS compatible input. Logic high = enable, logic low = shutdown.
Not internally connected.
Ground.
Power-on-Reset: Open-drain output. When active, this output goes low impedance low, indicating that
the output is out of regulation. High (open) means VOUT is regulating within 10%. POR assertion can
be delayed by using a single capacitor from the DELAY pin, to ground.
Feedback Input: Connect to resistor voltage divider from the OUT pin.
Output Voltage: Output of voltage regulator. Place capacitor to ground to bypass the output voltage.
Minimum load current is 100µA. Nominal bypass capacitor is 10µF per amp of output current.
November 7, 2013
3
Revision 1.0