Top View

Bottom View

A1

A2

A3

D1

D2

B1

B2

B3

C1

C2

C3

D3

A1

A2

A3

D1

D2

D3

B1

B2

B3

C1

C2

C3

LM3209-G3

SNVS626B – NOVEMBER 2009 – REVISED MARCH 2013

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CONNECTION DIAGRAMS AND PACKAGE MARK INFORMATION

Figure 1. 12–Bump Thin DSBGA Package, Large Bump

PIN DESCRIPTIONS

Pin #

Name

Description

A1

NC

This pin is shorted to ground internally. Leave this pin floating.

B1

VCON

Output voltage program pin. Analog voltage from DAC/controller to set VOUT.

C1

FB

Feedback input to inverting input of error amplifier. Connect output voltage directly to this node

at load point.

D1

VOUT

Regulated output voltage of LM3209-G3. Connect this to a 4.7 µF ceramic output filter

capacitor to GND.

A2

NC

Supply voltage for analog circuits of LM3209-G3. This pin is connected to PVIN via a 36

Ω

resistor internally. Leave this pin floating.

B2

EN

Enable Pin. Pulling this pin higher than 1.2V enables part to function.

C2

SGND

Signal Ground for analog circuits.

D2

SW2

Switch pin for Internal Power Switches M3 and M4. Connect inductor between SW1 and SW2.

A3

PVIN

Power MOSFET input and power current input pin. Optional low-pass filtering may help buck

and buck-boost modes for radiated EMI and noise reduction.

B3

PVIN

Power MOSFET input and power current input pin. Optional low-pass filtering may help buck

and buck-boost modes for radiated EMI and noise reduction.

C3

SW1

Switch pin for Internal Power Switches M1 and M2. Connect inductor between SW1 and SW2.

D3

PGND

Power Ground for Power MOSFETs and gate drive circuitry.

This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with

appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.

ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more

susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.

2

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Product Folder Links: LM3209-G3