lx1912 Microsemi Corporation, lx1912 Datasheet - Page 2

• Manufacturer Part Number: lx1912
• Description: Vref @ 800mv, 1.0a, 1.2mhz Pwm Current Mode Pwm Buck Regulator
• Manufacturer: Microsemi Corporation

Copyright © 2005
Rev. 1.0, 2006-09-06
Input Voltage (VCC and VPWR).......................................................................................-0.3V to 7.0V
SW to GND.............................................................................................................-0.3V to (V
V
SW Peak Current .........................................................................................................Internally Limited
Operating Junction Temperature Range (T
Storage Temperature Range, T
Maximum Junction Temperature....................................................................................................150°C
Peak Package Solder Reflow Temp. (40 seconds max. 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
The θ
above assume no ambient airflow.
Name
VPWR
SG
FB
GND
VCC
SW
THERMAL RESISTANCE
FB
to GND..........................................................................................................................-0.3V to +2V
JA
Ground. Currents are positive into, negative out of specified terminal.
TM
numbers are guidelines for the thermal performance of the device/pc-board system. All of the
Plastic TSOT 6-Pin
Unregulated supply voltage input, ranging from +4V to 6.0V for internal analog control circuitry.
Unregulated supply voltage for PMOSFET drain to drive the switch pin.
Feedback input for setting programming output voltage.
Circuit ground providing bias for IC operation and high frequency gate drive bias.
Inductor and commutation diode connection point. Connects to internal PMOSFET source.
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
J
).................................................................-40°C to +125°C
+ (P
F U N C T I O N A L P I N D E S C R I P T I O N
D
x θ
A
JA
MBIENT
).
Integrated Products Division
, θ
®
Microsemi
JA
Description
VREF @ 800mV, 1.0A, 1.2MHz PWM
134°C/W
IN
+ 0.3V)
P
RODUCTION
RoHS / Pb-free 100% Matte Tin Lead Finish
GND
N.C.
D
P A C K A G E P I N O U T
FB
ATA SHEET
N.C. – No Internal Connection
1
2
3
SG P
(Top View)
ACKAGE
6
5
4
LX1912
SW
VPWR
VCC
Page 2