Datasheet

VCON
FB
NC
SGND
BPEN
EN
VIN
SW
PGND
VCON
FB
NC
SGND
BPEN
EN
VIN
SW
PGND
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Connection Diagram and Package Mark Information www.ti.com
7 Connection Diagram and Package Mark Information
Figure 8. Connection Diagram
8 Pin Descriptions
Pin # Name Description
Voltage Control Analog input. VCON controls VOUT in PWM and ECO modes. VCON may
A1 VCON also be used to force part into sleep mode by setting VCON < 80 mV or into bypass
condition by setting VCON > 1.5V.
A2 SGND Signal Ground for analog and control circuitry.
A3 PGND Power Ground for the Power MOSFETs and gate drive circuitry.
Enable Input. Set this digital input high for normal operation. For shutdown, set low. Do not
B1 EN
leave EN pin floating.
Do not connect to PGND directly — internally connected to SGND. Connect to SGND or
B2 NC
leave floating.
Switching Node connection to the internal PFET switch and NFET synchronous rectifier.
B3 SW Connect to an inductor with a saturation current rating that exceeds the maximum Switch
Peak Current Limit specification of the LM3262.
Bypass Enable input. Set this digital input high to force bypass operation. For normal
C1 BPEN operation with automatic bypass, set low or connect to ground. Do not leave this pin
floating.
Feedback Analog Input and Bypass FET output. Connect to the output at the output filter
C2 FB
capacitor.
C3 VIN Voltage supply input for SMPS converter.
6
LM3262 DSBGA Evaluation Board SNVU159B–July 2012–Revised April 2013
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