A3

Top View

Bottom View

A1

C1

A3

C3

EN

FB

SW

GND

EN

GND

SW

FB

B2

A1

C3

C1

B2

1

GND

2

EN

3

FB

4

SW

5

1

2

5

4

3

SW

FB

EN

GND

L1: 2.2 PH

10 PF

4.7 PF

LM3671-

ADJ

2.7V to 5.5V

R1

R2

C1

C2

LM3671

LM3671Q

SNVS294P – NOVEMBER 2004 – REVISED MAY 2013

www.ti.com

DESCRIPTION (CONTINUED)

The LM3671 is available in SOT-23, tiny 5-bump DSBGA and a 6-pin USON packages in leaded (PB) and lead-

free (NO PB) versions. A high-switching frequency of 2 MHz (typ.) allows use of tiny surface-mount components.

Only three external surface-mount components, an inductor and two ceramic capacitors, are required.

Figure 2. Typical Application Circuit for ADJ version

Connection Diagrams

Figure 3. Top View

SOT-23 Package

See Package Number DBV (2.92 mm x 2.84 mm x 1.2 mm)

Figure 4. 5-Bump DSBGA Package

See Package Number YZR0005 (1.05 mm x 1.38 mm x 0.6 mm)

2

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