LX8580A-00CDF Microsemi Analog Mixed Signal Group, LX8580A-00CDF Datasheet - Page 3

• Manufacturer Part Number: LX8580A-00CDF
• Description: IC REG LDO POS 7.5A ADJ SPAK-5
• Manufacturer: Microsemi Analog Mixed Signal Group

Specifications of LX8580A-00CDF

• Regulator Topology: Positive Adjustable
• Voltage - Output: 2 ~ 2.85 V
• Voltage - Input: Up to 7V
• Voltage - Dropout (typical): 0.59V @ 7.5A
• Number Of Regulators: 1
• Current - Output: 7.5A
• Current - Limit (min): 7.7A
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SPAK-5
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Copyright © 2001
Rev. 1.4c, 2007-01-02
P
Tantalum
Tantalum
5.0V
3.3V
1
2
3
4
5
IN
100µF
33µF
TM
OUTPUT
ADJUST
SENSE
N
V
V
AME
CTRL
PWR
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
This pin is the positive side of the reference voltage for the device. With this pin it is possible to Kelvin-sense the
output voltage at the load.
This pin is the negative side of the reference voltage for the device. Ripple rejection can be improved by adding
a small bypass capacitor from the ADJUST pin to ground. The capacitor value should be selected so that:
where F
SENSE leads of the LX8580A
This is the regulated power output of the device
This pin is the voltage supply pin for the control circuitry of the device. The current flow into this pin will be about
1% of the output current. Please refer to the electrical characteristics section of
the data sheet for dropout voltage for load conditions.
This is the collector of the power section of the LX8580A. The output load current is supplied through this pin.
For the device to regulate, the voltage at this pin must be between 0.1V and 0.8V greater than the output voltage
(Higher output current require higher voltages differences between V
V
V
CTRL
PWR
R
LX8580A
is the ripple frequency and R
F U N C T I O N A L P I N D E S C R I P T I O N
OUTPUT
ADJUST
T Y P I C A L A P P L I C A T I O N
SENSE
Figure 1 – Typical Application
Integrated Products Division
®
Microsemi
1
7.5A Very Low Dropout Positive Regulator
is the value of the resistor between the ADJUST and
R
R
D
1
2
ESCRIPTION
P
RODUCTION
500µF
V
V
R
R
OUT
OUT
1
2
PWR
= 121Ω
= 150Ω
=
and OUTPUT).
= 2.8V
D
V
ATA
REF
⎛
⎜ ⎜
⎝
S
1
HEET
+
R
R
2
1
⎞
⎟ ⎟
⎠
+
LX8580A
C
I
ADJ
R
≤
2
π
F
×
1
R
R
R
1
2
Page 3