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FEB179

P1-P3
©2007 Fairchild Semiconductor Corporation 1 www.fairchildsemi.com
FAN5350 Version 1.0
FAN5350 Evaluation Board User Manual
June 2007
FAN535
FAN535FAN535
FAN5350
00
0
Evaluation Board
Evaluation Board Evaluation Board
Evaluation Board User Manual
User ManualUser Manual
User Manual
3MHz Fixed Frequency Operation
16µA Typical Quiescent Current
Best-in-Class Load Transient
Up to 600mA Output Current
2.7V to 5.5V Input Voltage Range
1.82V Fixed Output Voltage
Synchronous Operation
Pulse Skip and Power Save Mode
6-lead 3x3mm MLP and 5-bump
1x1.37mm WLCSP Packages
Description:
The FAN5350 Evaluation Board is a
compact circuit including the FAN5350
MPX or FAN5350 UCX, a 1µH inductor
and one small 4.7µF input and output
capacitor. The FAN5350 demo board is a
completely assembled and tested surface
mount board, providing easy probe access
points to all inputs and outputs so that
electrical characteristics and waveforms can
be easily measured.
Figure 1: FAN5350 MPX
Figure 2: FAN5350 UCX
______________________________________________________________________
AGND
FB
SW
VIN
PGND
EN
1 6
2 5
3 4
V
IN
L1
V
OUT
C
OUT
C
IN
P1
(GND)
1µΗ
4.7µF
4.7µF
Figure 3: MLP Schematic Diagram
©2007 Fairchild Semiconductor Corporation 2 www.fairchildsemi.com
FAN5350 Version 1.0
FAN5350 Evaluation Board User Manual
Figure 4: WLCSP Schematic Diagram
Where To Begin:
1: Connect V
IN
(2.7 to 5.5V) and GND (0V).
2: Use jumper JP1 to select "ON" and "OFF" modes.
3: Verify that the output voltage V
OUT,
remains constant at 1.82V for varying input
voltages and the load current
4: To measure the supply current in non-switching condition, the FB pin has to be forced
with an external voltage higher than V
OUT
nominal. V
FB
= 2V is a good choice. To
measure the supply current in switching condition, the digital current meter readings
should be averaged until a stable value is displayed.
5: Observe that in OFF mode (EN connected to GND) the supply current drops below
1µA. A typical value at room temperature is ~50nA provided that there is no leakage
current through the PCB. Please ensure the PCB surface is very clean when
performing this measurement.
Figure 3: MLP PCB Layout
©2007 Fairchild Semiconductor Corporation 3 www.fairchildsemi.com
FAN5350 Version 1.0
FAN5350 Evaluation Board User Manual
Figure 4: WLCSP PCB Layout
Table 1: WLCSP Bill of Materials
Description Qty Ref. Vendor Part Number
Inductor 1.3uH, 1.2A, 90mohm 1 L1 FDK MIPSA2520D1R0
Capacitor 4.7uF, 10%, 6.3V, X5R,
0603
2 CIN,COUT MURATA GRM39 X5R 475K
6.3
Hardware Connector Header .1
SINGLE STR 36POS
7 Vin,Vout,GND,
ON/OFF(JP1)
Digi-Key S1011-36-ND
IC DC/DC Regulator in CSP, 5 bumps
1 U1 Fairchild FAN5350UC
Load Resistor 1 Rload Any
Hardware, SHUNT, PHBR 15 AU 1 ON, PWM DIGI-KEY A26227-ND
Table 2: MLP Bill of Materials
Description Qty
Ref. Vendor Part Number
Inductor 1.3uH, 1.2A, 90mohm 1 L1 FDK MIPSA2520D1R0
Capacitor 4.7uF, 10%, 6.3V, X5R,
0603
2 CIN,COUT MURATA GRM39 X5R 475K
6.3
Hardware Connector Header .1
SINGLE STR 36POS
14 Vin,Vout,GND,
LD, ON/OFF(JP1)
Digi-Key S1011-36-ND
IC DC/DC Regulator in MLP, 6 pin 1 U1 Fairchild FAN5350MPX
Hardware, SHUNT, PHBR 15 AU 1 ON, PWM DIGI-KEY A26227-ND
Table 3: Ordering Information
Product Number Pb-Free Operating
Temperature Range
Package Type
FAN5350UCX Yes -40°C to 85°C 5-bump WLCSP 1x1.37mm
FAN5350MPX Yes -40°C to 85°C 6-pin MLP 3x3mm
P1-P3

FEB179

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Description:
BOARD EVAL FOR FAN5350 WLCSP
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