FEB179

FEB179 Datasheet


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FAN5350 Evaluation Board User Manual

June 2007

FAN5350 Evaluation Board 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

PGND
6 VIN

AGND 2

VOUT

P1 GND
5 SW 4 EN
4.7µF COUT

L1 1µΗ

Figure 3 MLP Schematic Diagram

VIN 4.7µF C IN
2007 Fairchild Semiconductor Corporation

FAN5350 Version

FAN5350 Evaluation Board User Manual

Figure 4 WLCSP Schematic Diagram

Where To Begin:
1 Connect VIN to 5.5V and GND 0V . 2 Use jumper JP1 to select "ON" and "OFF" modes. 3 Verify that the output voltage VOUT, 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 VOUT nominal. VFB = 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

FAN5350 Version

FAN5350 Evaluation Board User Manual

Figure 4 WLCSP PCB Layout

Table 1 WLCSP Bill of Materials

Ref.

Vendor

Inductor 1.3uH, 1.2A, 90mohm

Capacitor 4.7uF, 10%, 6.3V, X5R,

CIN,COUT MURATA
0603

Hardware Connector Header SINGLE STR 36POS
7 Vin,Vout,GND, Digi-Key ON/OFF JP1

IC DC/DC Regulator in CSP, 5 bumps 1
Table 3 Ordering Information

Part Number MIPSA2520D1R0 GRM39 X5R 475K

S1011-36-ND

FAN5350UC

A26227-ND

Part Number MIPSA2520D1R0 GRM39 X5R 475K

S1011-36-ND

FAN5350MPX A26227-ND

Product Number Pb-Free

FAN5350UCX

FAN5350MPX

Operating Temperature Range
-40°C to 85°C
-40°C to 85°C

Package Type
5-bump WLCSP 1x1.37mm 6-pin MLP 3x3mm
2007 Fairchild Semiconductor Corporation

FAN5350 Version
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Datasheet ID: FEB179 513936