GND

FB

EN

VIN

SW

VIN = 5V

C1

R3

D1

L1

LM2830

R2

R1

C2

VO = 3.3V @ 1.0A

LM2830, LM2830-Q1

www.ti.com

SNVS454E – AUGUST 2006 – REVISED DECEMBER 2014

8.2.3 LM2830X Design Vo = 3.3 V at 1.0-A

Figure 24 shows typical application circuit for step down solution from VIN=5 to VOUT=3.3 V, 1.0-A load current.

Figure 24. LM2830X (1.6 MHz): Vin = 5 V, Vo = 3.3 V at 1.0-A Schematic

Table 4. Bill of Materials

PART ID

PART VALUE

MANUFACTURER

PART NUMBER

U1

1.0-A Buck Regulator

TI

LM2830X

C1, Input Cap

22 µF, 6.3 V, X5R

TDK

C3216X5ROJ226M

C2, Output Cap

22 µF, 6.3 V, X5R

TDK

C3216X5ROJ226M

D1, Catch Diode

0.3 Vf Schottky 1.5 A, 30 VR

TOSHIBA

CRS08

L1

2.2 µH, 1.8 A

Coilcraft

ME3220-222

R2

10.0 k

Ω, 1%

Vishay

CRCW08051002F

R1

45.3 k

Ω, 1%

Vishay

CRCW08054532F

R3

100 k

Ω, 1%

Vishay

CRCW08051003F

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