RoHS Compliance Information	Size in Kbytes	Date
LM5009A 100V, 150 mA Constant On-Time Buck Switching Regulator	391 Kbytes	28-Jun-09	Download

Part Number

Package

Factory Lead Time

Models

Samples & Electronic Orders

Budgetary Pricing

Std Pack Size

Package Marking Format

Type

Pins

Spec.

MSL Rating

Peak Reflow

RoHS Report

CAD Symbols

Weeks

Qty

Qty

$US each

LM5009AMM

MINI SOIC

8

NOPB

1

260

RoHS

N/A

Full production

N/A

1K+

$1.45

reel of 1000

ZXTT SLLA

6 weeks

N/A

LM5009AMMX

MINI SOIC

8

NOPB

1

260

RoHS

N/A

Full production

N/A

1K+

$1.45

reel of 3500

ZXTT SLLA

6 weeks

N/A

LM5009AEVAL

Evaluation Board for the LM5009A

Full production

N/A

CALL

N/A

-

8 weeks

N/A

LM5009ASD

LLP

8

NOPB

1

260

RoHS

N/A

Full production

N/A

1K+

$1.45

reel of 1000

NS UZXYTT 5009ASD

6 weeks

N/A

LM5009ASDX

LLP

8

NOPB

1

260

RoHS

N/A

Full production

N/A

1K+

$1.45

reel of 4500

NS UZXYTT 5009ASD

6 weeks

N/A

General Description

The LM5009A is a functional variant of the LM5009 COT Buck Switching Regulator. The functional differences of the LM5009A are: The minimum input operating voltage is 6 volts, the on-time equation is slightly different, and the requirement for a minimum load current is removed.

The LM5009A Step Down Switching Regulator features all of the functions needed to implement a low cost, efficient, Buck bias regulator. This high voltage regulator contains an 100 V N-Channel Buck Switch. The device is easy to implement and is provided in the MSOP-8 and the thermally enhanced LLP-8 packages. The regulator is based on a control scheme using an ON time inversely proportional to V_IN. This feature allows the operating frequency to remain relatively constant. The control scheme requires no loop compensation. An intelligent current limit is implemented with forced OFF time, which is inversely proportional to Vout. This scheme ensures short circuit control while providing minimum foldback. Other features include: Thermal Shutdown, V_CC under-voltage lockout, Gate drive under-voltage lockout, Max Duty Cycle limiter, and a pre-charge switch.

Design Tools

Title	Size in Kbytes	Date
LM5009A Quick Start Calculator	360 Kbytes	18-Jun-2009	View

If you have trouble printing or viewing PDF file(s), see Printing Problems.

Application Notes

Title	Size in Kbytes	Date
AN-1955: Application Note 1955 LM5009A Evaluation Board	487 Kbytes	2-Jun-09	Download