FAN5362 Datasheet, PDF (2/14 Pages) Fairchild Semiconductor – 3MHz, 500mA / 750mA Synchronous Buck Regulator

Ordering Information
Part Number Output Voltage⁽¹⁾ Operating Temperature Range
Package
Packing Method
FAN5362UC21X⁽²⁾
2.1
FAN5362UC25X⁽²⁾
2.5
FAN5362UC27X⁽²⁾
2.7
WLCSP-6, 0.4mm Pitch
FAN5362UC29X
2.9
-40 to 85°C
Tape and Reel
FAN5362UC33X
3.3
FAN5362UMP29X
2.9
FAN5362UMP33X
3.3
6-Lead, 2 x 2mm UMLP
Note:
1. Other voltage options available on request. Contact a Fairchild representative.
2. Preliminary; not full production release at this time. Contact a Fairchild representative for information.
Table 1. Recommended Components for Circuit in Figure 1
Component
Description
Example Part
L1
CIN
COUT
1μH, 2012, 190mΩ, 800mA
2.2μF, 6.3V, X5R, 0402
2.2μF, 6.3V, X5R, 0603
4.7μF, X5R, 0603
10μF, X5R, 0603
Murata LQM21PN1R0MC0
Murata GRM155R60J225ME15
GRM188R60J225KE19D
Murata GRM188R60J475M
Murata GRM188R60J106ME47D
Typical
1μH
2.2μF
4.7μF
10.0μF
Pin Configuration
Figure 2. WLCSP, Bumps Facing Down
Figure 3. WLCSP, Bumps Facing Up
Pin Definitions
Pin #
A1
B1
C1
C2
B2
A2
Name
MODE
SW
FB
GND
EN
VIN
Description
Logic 1 on this pin forces the IC to stay in PWM mode. A logic 0 allows the IC to automatically switch
to PFM during light loads. The regulator also synchronizes its switching frequency to two times the
frequency provided on this pin. Do not leave this pin floating.
Switching Node. Connect to output inductor.
Feedback / VOUT. Connect to output voltage.
Ground. Power and IC ground. All signals are referenced to this pin.
Enable. The device is in shutdown mode when voltage to this pin is <0.4V and enabled when >1.2V.
Do not leave this pin floating.
Input Voltage. Connect to input power source.
© 2009 Fairchild Semiconductor Corporation
FAN5362 • Rev. 1.0.1
2
www.fairchildsemi.com