LX1912CSG datasheet(2/8 Pages) MICROSEMI

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LX1912

PRODUCTION DATA SHEET

Microsemi

Integrated Products Division

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

Page 2

Rev. 1.0, 2006-09-06

VREF @ 800mV, 1.0A, 1.2MHz PWM

ABSOLUTE MAXIMUM RATINGS

Input Voltage (VCC and VPWR).......................................................................................-0.3V to 7.0V

SW to GND.............................................................................................................-0.3V to (VIN + 0.3V)

VFB to GND..........................................................................................................................-0.3V to +2V

SW Peak Current .........................................................................................................Internally Limited

Operating Junction Temperature Range (TJ).................................................................-40°C to +125°C

Storage Temperature Range, TA...................................................................................... -65°C to 150°C

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

Ground. Currents are positive into, negative out of specified terminal.

TH ERMAL DATA

SG Plastic TSOT 6-Pin

THERMAL RESISTANCE

-JUNCTION TO AMBIENT,

134

°C/W

Junction Temperature Calculation: TJ = TA + (PD x θJA).

The

JA numbers are guidelines for the thermal performance of the device/pc-board system. All of the

above assume no ambient airflow.

PACKAGE PIN OUT

N.C.

GND

VCC

VPWR

SG PACKAGE

(Top View)

RoHS / Pb-free 100% Matte Tin Lead Finish

N.C. – No Internal Connection

FUNCTIONAL PIN DESCRIPTION

Name

Description

VCC

Unregulated supply voltage input, ranging from +4V to 6.0V for internal analog control circuitry.

VPWR

Unregulated supply voltage for PMOSFET drain to drive the switch pin.

Feedback input for setting programming output voltage.

GND

Circuit ground providing bias for IC operation and high frequency gate drive bias.

Inductor and commutation diode connection point. Connects to internal PMOSFET source.

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