PVIN

AVIN

EN

SS

SGND

PGND

SNS

SW

LM2852

+

VOUT = 1.8V

LM2852

www.ti.com

SNVS325D – JANUARY 2005 – REVISED APRIL 2013

2. All ground connections must be tied together. Use a broad ground plane, for example a completely filled

back plane, to establish the lowest resistance possible between all ground connections.

3. The sense pin connection should be made as close to the load as possible so that the voltage at the load is

the expected regulated value. The sense line should not run too close to nodes with high EMI (such as the

switch node) to minimize interference.

4. The switch node connections should be low resistance to reduce power losses. Low resistance means the

trace between the switch pin and the inductor should be wide. However, the area of the switch node should

not be too large since EMI increases with greater area. So connect the inductor to the switch pin with a short,

trade off between low resistance and EMI.

5. Allow area under the chip to solder the entire exposed die attach pad to ground for improved thermal and

electrical performance.

LM2852 Example Circuit Schematic

Figure 15.

ID

Part Number

Type

Size

Parameters

Qty

Vendor

LM2852YMXA-1.8

2A Buck

HTSSOP-14

1

TI

DO3316P-153

Inductor

15 µH

1

Coilcraft

595D107X_6R3C2T

Capacitor

Case Code “C”

100 µF ±20%

1

Vishay-Sprague

GRM32ER60J476ME20B

Capacitor

1210

47µF/X5R/6.3V

1

Murata

GRM21BR71C105KA01B

Capacitor

0805

1µF/X7R/16V

1

Murata

VJ0805Y272KXXA

Capacitor

0805

2.7nF ±10%

1

Vishay-Vitramon

CRCW060310R0F

Resistor

0603

10

Ω ±10%

1

Vishay-Dale

GRM21BR71C105KA01B

Capacitor

0805

1µF/X7R/16V

1

Murata

Table 5. Bill of Materials for 1500kHz (LM2852X) 3.3V to 1.8V Conversion

ID

Part Number

Type

Size

Parameters

Qty

Vendor

LM2852XMXA-1.8

2A Buck

HTSSOP-14

1

TI

DO1813P-102HC

Inductor

1 µH

1

Coilcraft

GRM32DR61E106K

Capacitor

1210

10 µF/X5R/25V

1

Murata

GRM32ER60J476ME20B

Capacitor

1210

47µF/X5R/6.3V

1

Murata

GRM21BR71C105KA01B

Capacitor

0805

1µF/X7R/16V

1

Murata

VJ0805Y272KXXA

Capacitor

0805

2.7nF ±10%

1

Vishay-Vitramon

CRCW060310R0F

Resistor

0603

10

Ω ±10%

1

Vishay-Dale

GRM21BR71C105KA01B

Capacitor

0805

1µF/X7R/16V

1

Murata

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