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AN-8036 

APPLICATION NOTE 

© 2010 Fairchild Semiconductor Corporation 

 

www.fairchildsemi.com 

Rev. 1.0.0  •  3/31/10 

FAN5353 Bill of Materials 

Reference 

Quantity 

Description 

Manufacturer / Number 

U1 

IC, FAN5353 (MLP 3x3.5mm,14 pin) 

Fairchild / FAN5353MPX 

L1 

0.47µH, 4A, 20m

 4.9x5.5mm 

Vishay / IHLP1616ABERR47M01 

MURATA / LQH55PNR47NT0 

TDK / VLC5020TDC-R47N 

C1 

10nf, 25V, 10%, X7R, 0402 

DigiKey / PCC1725 

C

IN

, C

OUT

, C2 

10µf, 10V, 10%, X7R, 0805 

Murata / GRM21BR71A106KE51L 

DigiKey / 490-3905-1 

CV

CC

 

4.7µf, 6.3V, 20%, X5R, 0603 

Murata / GRM188R60J475M 

Digikey / 490-3297-1 

R3, R6, R8 

20K, 5%, 0603 

DigiKey / P20K G 

R5 

1

, 5%, 0603 

DigiKey / P1.0 G 

R9 

0

, 5%, 0603 

DigiKey / P0.0 G 

R7 

1.0K, 5%, 0603 

DigiKey / P1.0K G 

R1 

100K, 1%, 0603 

DigiKey / P100K H 

R2 

200K, 1%, 0603 

DigiKey / P200K H 

SW, V

IN

, V

IN_S

 

11 

1x1 Header Strip, 125C 

DigiKey / SAM1098-01 

V

OUT

, V

OUT_S

, V

REF

 

PGND (2), AGND (3) 

J1 

3x1 Header Strip, 125C 

DigiKey / SAM1098-03 

EN (1) 

Shunt, Header 

DigiKey / WM23943 

PCB, FAN5353/4 MP_2 

C3 

Optional 0805 

R

LOAD

, R

LOAD1

 

No Load Straight Interconnects, SIP 

DigiKey / ED7150 

R

LOAD

, R

LOAD1

 

No Load 2.2

, 5%, Through Hole 

DigiKey / PPC2.2W-2CT 

Total 

37 

 
 

Summary of Contents for AN-8036

Page 1: ...stalled on the board to ensure tight regulation low ripple and excellent transient response The FAN5353 54 evaluation board provides probe access points to all key circuit nodes so that electrical characteristics can be measured Quick Start Connection Guide 1 Connect VIN input power supply as shown in Figure 1 2 ENABLE Jumper J1 factory installed 3 Connect the external load between VOUT and PGND 4...

Page 2: ...AN 8036 APPLICATION NOTE 2010 Fairchild Semiconductor Corporation www fairchildsemi com Rev 1 0 0 3 31 10 2 Schematic Figure 2 Schematic Diagram ...

Page 3: ...E51L DigiKey 490 3905 1 CVCC 1 4 7µf 6 3V 20 X5R 0603 Murata GRM188R60J475M Digikey 490 3297 1 R3 R6 R8 3 20K 5 0603 DigiKey P20K G R5 1 1Ω 5 0603 DigiKey P1 0 G R9 1 0Ω 5 0603 DigiKey P0 0 G R7 1 1 0K 5 0603 DigiKey P1 0K G R1 1 100K 1 0603 DigiKey P100K H R2 1 200K 1 0603 DigiKey P200K H SW VIN VIN_S 11 1x1 Header Strip 125C DigiKey SAM1098 01 VOUT VOUT_S VREF PGND 2 AGND 3 J1 1 3x1 Header Strip...

Page 4: ...L DigiKey 490 3905 1 CVCC 1 4 7µF 6 3V 20 X5R 0603 Murata GRM188R60J475M Digikey 490 3297 1 R3 R6 R8 3 20K 5 0603 DigiKey P20K G R5 1 1Ω 5 0603 DigiKey P1 0 G R4 R7 2 1 0K 5 0603 DigiKey P1 0K G R1 1 100K 1 0603 DigiKey P100K H R2 1 200K 1 0603 DigiKey P200K H SW VIN VIN_S 11 1x1 Header Strip 125C DigiKey SAM1098 01 VOUT VOUT_S VREF PGND 2 AGND 3 J1 J2 2 3x1 Header Strip 125C DigiKey SAM1098 03 EN...

Page 5: ...AN 8036 APPLICATION NOTE 2010 Fairchild Semiconductor Corporation www fairchildsemi com Rev 1 0 0 3 31 10 5 Figure 3 FAN5354 PCB Top Layer ...

Page 6: ...pad 2 counting from the bottom is an open drain connected to VIN through a pull up resistor indicating that the IC is in regulation when its state is HIGH Output Voltage Setting The output voltage is factory preset to 1 2V since R1 100kΩ and R2 200kΩ To set a different VOUT R2 should be replaced with another resistor calculated according to 8 0 V 8 0 1 R 2 R OUT 1 Optional Load Resistors Two power...

Page 7: ...HERS LIFE SUPPORT POLICY FAIRCHILD S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or systems which a are intended for surgical implant into the body or b support or sustain life or c whose failure ...

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