LM3205_15 Datasheet, PDF (2/28 Pages) Texas Instruments – LM3205 650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers

LM3205
SNVS388E – JULY 2005 – REVISED APRIL 2013
CONNECTION DIAGRAMS
PV_IN A1
V_DD B1
EN C1
SW
A2
C2
V_CON
A3 PGND
B3 SGND
C3 FB
PGND A3
SGND B3
FB C3
SW
A2
C2
V_CON
A1 PV_IN
B1 V_DD
C1 EN
Top View
Bottom View
Figure 2. 8–Bump Thin DSBGA Package, Large Bump
NS Package Number YZR0008GNA
www.ti.com
PGND 1
PGND 2
SGND 3
VCON 4
FB 5
LM3205
10 SW
9 PVin
8 PVin
7 VDD
6 EN
SW 10
PVin 9
PVin 8
VDD 7
EN 6
LM3205
1 PGND
2 PGND
3 SGND
4 VCON
5 FB
Top View
Bottom View
Figure 3. 10–Pin WSON
NS Package Number DSC0010A
Pin #
DSBGA
WSON
A1
8, 9
B1
7
C1
6
C2
4
C3
5
B3
3
A3
1, 2
A2
10
Name
PIN DESCRIPTIONS
Description
PV_IN
V_DD
EN
V_CON
FB
SGND
PGND
SW
Power Supply Voltage Input to the internal PFET switch.
Analog Supply Input.
Enable Input. Set this digital input high for normal operation. For shutdown, set low.
Voltage Control Analog input. V_CON controls V_OUT in PWM mode.
Feedback Analog Input. Connect to the output at the output filter capacitor.
Analog and Control Ground
Power Ground
Switch node connection to the internal PFET switch and NFET synchronous rectifier.
Connect to an inductor with a saturation current rating that exceeds the maximum Switch Peak
Current Limit specification of the LM3205.
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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