Fairchild AN-8036, FAN5353, FAN5354 User Manual
www.fairchildsemi.com
AN-8036
FAN5353 / FAN5354 Evaluation Board User Guide
Summary
The FAN5353/54 evaluation board is a compact circuit
including Fairchild’s FAN5353/54 adjustable output (V
by default set to 1.2V), step-down switching voltage
regulator in a 12-Lead MLP 3x3.5 Package.
One 10µF input capacitor, 2 x 10µF output capacitors, and
one 0.47µH inductor are installed 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.
OUT
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. Kelvin connected input and output voltage sense points
(VIN_S, VOUT_S) are provided.
5. For FAN5354 only: the jumper “MODE” (J2) in
position 1 selects forced PWM, while in position 0
(factory installed) selects PFM
Figure 1. Evaluation Board Connection Diagram
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
Rev. 1.0.0 • 3/31/10
AN-8036 APPLICATION NOTE
Schematic
Figure 2. Schematic Diagram
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
Rev. 1.0.0 • 3/31/10 2
AN-8036 APPLICATION NOTE
FAN5353 Bill of Materials
Reference Quantity Description Manufacturer / Number
U1 1 IC, FAN5353 (MLP 3x3.5mm,14 pin) Fairchild / FAN5353MPX
Vishay / IHLP1616ABERR47M01
L1 1 0.47µH, 4A, 20mΩ 4.9x5.5mm
C1 1 10nf, 25V, 10%, X7R, 0402 DigiKey / PCC1725
CIN, C
, C2 3 10µf, 10V, 10%, X7R, 0805
OUT
CVCC 1 4.7µf, 6.3V, 20%, X5R, 0603
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, V
, V
OUT
OUT_S
IN_S
, V
REF
11 1x1 Header Strip, 125C DigiKey / SAM1098-01 V
PGND (2), AGND (3)
J1 1 3x1 Header Strip, 125C DigiKey / SAM1098-03
EN (1) 1 Shunt, Header DigiKey / WM23943
1 PCB, FAN5353/4 MP_2
C3 1 Optional 0805
R
R
LOAD
LOAD
, R
, R
4 No Load Straight Interconnects, SIP DigiKey / ED7150
LOAD1
2 No Load 2.2Ω, 5%, Through Hole DigiKey / PPC2.2W-2CT
LOAD1
Total 37
MURATA / LQH55PNR47NT0
TDK / VLC5020TDC-R47N
Murata / GRM21BR71A106KE51L
DigiKey / 490-3905-1
Murata / GRM188R60J475M
Digikey / 490-3297-1
© 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com
Rev. 1.0.0 • 3/31/10 3
Loading...