LX1910CDU MICROSEMI [Microsemi Corporation], LX1910CDU Datasheet - Page 2

• Manufacturer Part Number: LX1910CDU
• Description: Step-Down Regulator
• Manufacturer: MICROSEMI [Microsemi Corporation]

Copyright © 2004
Rev. 1.1, 2005-02-25
Input Voltage (IN) or SHDN to GND .............................................................................-0.3V to 7.0V
SW to GND.............................................................................................................-0.3V to (V
V
SW Peak Current (Internally Limited) ....................................................................................... 1000mA
Operating Temperature Range.......................................................................................-40°C to +125°C
Storage Temperature Range, T
Maximum Junction Temperature.................................................................................................... 150°C
RoHS / Pb-free Peak Package Solder Reflow Temperature
(40 seconds maximum exposure) ......................................................................................260°C (+0, -5)
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Junction Temperature Calculation: T
performance of the device/pc-board system. All of the above assume no ambient airflow.
COMP
AGND
SHDN
PGND
DU
N
PVIN
AVIN
FB
SW
THERMAL RESISTANCE
FB
AME
to GND..........................................................................................................................-0.3V to +2V
Ground. Currents are positive into, negative out of specified terminal.
Plastic MSOP 8-Pin
TM
Inductor and commutation diode connection point. Connects to internal MOSFET drain.
Analog circuit ground providing bias for IC operation.
Feedback input for setting adjustable output voltage
Enable control input. Reduces quiescent current to 1µA. Pin 8, Output becomes high impedance.
Unregulated supply voltage input connected to PMOS Source. Input range from +2.7V to 6.0V
Frequency Compensation of the overall loop is effected by placing a series R/C combination between COMP pin and GND.
Unregulated supply voltage input. Input range from +4V to 6.0V
Power ground (return path for internal PMOS gate driver).
A B S O L U T E M A X I M U M R A T I N G S
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: [phone]
A
-
...................................................................................... -65°C to 150°C
JUNCTION TO
T H E R M A L D A T A
J
= T
A
+ (P
D
F U N C T I O N A L P I N D E S C R I P T I O N
x θ
A
JA
MBIENT
). The θ
Integrated Products Division
, θ
JA
numbers are guidelines for the thermal
JA
®
Microsemi
D
ESCRIPTION
206°C/W
IN
+ 0.3V)
Step-Down Regulator
P
RODUCTION
COMP
RoHS / Pb-free 100% Matte Tin Lead Finish
SHDN
D
PVIN
AVIN
ATA
P A C K A G E P I N O U T
S
HEET
DU P
1
2
3
4
(Top View)
ACKAGE
8
7
6
5
LX1910
SW
PGND
AGND
FB
Page 2