Connection Diagram

20028523

Bottom View

Ordering Information

Standard Micro SMD Package:

Order Number

Shutdown Polarity

Package Number

Package

Marking

Supplied As

LM2794BL

Active Low

BLP14EHB

I LOG

250 Units, Tape and Reel

LM2794BLX

Active Low

BLP14EHB

I LOG

3000 Units, Tape and Reel

LM2795BL

Active High

BLP14EHB

I LOJ

250 Units, Tape and Reel

LM2795BLX

Active High

BLP14EHB

I LOJ

3000 Units, Tape and Reel

Thin Micro SMD Package:

Order Number

Shutdown Polarity

Package Number

Package

Marking

Supplied As

LM2794TL

Active Low

TLP14EHA

I LOG

250 Units, Tape and Reel

LM2794TLX

Active Low

TLP14EHA

I LOG

3000 Units, Tape and Reel

LM2795TL

Active High

TLP14EHA

I LOJ

250 Units, Tape and Reel

LM2795TLX

Active High

TLP14EHA

I LOJ

3000 Units, Tape and Reel

Pin Description

Pin(*)

Name

Function

A1

C1+

Positive terminal of C1

B2

C1−

Negative terminal of C1

C1

V

IN

Power supply voltage input

D2

GND

Power supply ground input

E1

C2−

Negative terminal of C2

E3,E5,E7,D6

D1−4

Current source outputs. Connect directly to LED

C7

I

SET

Current Sense Input. Connect 1% resistor to ground to set constant current through LED

B6

BRGT

Variable voltage input controls output current

A7

SD

The LM2794 has an active-low shutdown pin (LOW = shutdown, HIGH = operating). The

LM2795 has an active-high shutdown pin (HIGH = shutdown, LOW = operating) that has a

pull-up to V

A5

C2+

Positive terminal of C2

A3

P

OUT

Charge pump output

(*) Note that the pin numbering scheme for the Micro SMD package was revised in April, 2002 to conform to JEDEC standard. Only the pin numbers were revised.

No changes to the physical location of the inputs/outputs were made. For reference purpose, the obsolete numbering had C1+ as pin 1, C1- as pin 2, VIN as pin

3, GND as pin 4, C2- as pin 5, D1-D4 as pin 6,7,8 & 9, Iset as pin 10, BRGT as pin 11, SD as pin 12, C2+ as pin 13, Pout as pin 14

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