A1

B2

C1

D2

E1

E3

E5

E7

D6

C7

B6

A7

A5

A3

LM2794, LM2795

SNVS168L – JANUARY 2002 – REVISED MAY 2013

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DESCRIPTION (CONTINUED)

Brightness can be controlled by both linear and PWM techniques. A voltage between 0V and 3.0V may be

applied to the BRGT pin to linearly vary the LED current. Alternatively, a PWM signal can be applied to the SD

pin to vary the perceived brightness of the LED. The SD pin reduces the operating current to 2.3µA (typ.) The

LM2794 is shut down when the SD pin is low, and the LM2795 is shut down when the SD pin is high.

The LM2794/95 is available in a DSBGA CSP package.

Connection Diagram

Figure 1. DSBGA Package

Bottom View

PIN DESCRIPTION

Pin(1)

Name

Function

A1

C1+

Positive terminal of C1

B2

C1

−

Negative terminal of C1

C1

VIN

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

ISET

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 VIN.

A5

C2+

Positive terminal of C2

A3

POUT

Charge pump output

(1)

Note that the pin numbering scheme for the DSBGA 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

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

2

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