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PDF FAN4603 Data sheet ( Hoja de datos )
| Número de pieza | FAN4603 | |
| Descripción | 500mA Synchronous Buck Regulator | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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www.DataSheet4U.com
April 2010
FAN4603
500mA, Fully Integrated, Buck Power Supply Module
Features
Solder and Play DC/DC Converter;
No External Components Required
Up to 91% Efficiency
500mA Output Current Capability
2.3V to 5.5V Input Voltage Range
Fixed Output Voltages from 1.2V to 1.8V
35µA PFM Quiescent Current
Best-in-Class Load and Line Transient Response
±4% PWM DC Voltage Accuracy
No External Components Required
High-Efficiency, Low-Ripple, Light-Load PFM
Thermal Shutdown (TSD), Under-Voltage Lockout,
(UVLO), and Short-Circuit (SCP) Protection
4.0 x 2.5mm MLP Package
Maximum Height: 1.1mm
Applications
POL and Distributed DC-DC Module Applications
Small Form Factor, Battery-Powered Applications
POL Core Power for FPGA, DSP, CPU, and GPU with
Fast-Transient, Wide Dynamic Load Requirements
Wireless Cards, Meters, Hearing Aids, Bluetooth
Headsets, POS Equipment, VOIP, PDAs, MIDs,
Netbooks, and Servers
Description
The FAN4603 is a fully integrated synchronous DC/DC buck
converter that provides up to 500mA of output current over an
input voltage ranging from 2.3V to 5.5V. It provides a fixed
output voltage level ranging from 1.2V to 1.8V. Other voltage
options are available on request.
The FAN4603 converter is offered as an ultra-miniature
“Solder and Play” solution that requires no external
components and is able to achieve a DC accuracy of ±4%
PWM and an output ripple less than 12mV.
Total footprint is 4.0 x 2.5mm with a maximum height of 1mm.
It can be used in small battery-powered devices and
applications with distributed DC POL requirements.
At moderate and light loads, pulse frequency modulation is
used to operate the device in power-save mode with a typical
quiescent current of 35µA. Even with such a low quiescent
current, the part exhibits excellent transient response during
large load swings. At higher loads, the system automatically
switches to fixed-frequency control.
In shutdown mode, the supply current drops below 2µA,
reducing power consumption.
Ordering Information
Part Number Output Voltage(1)
Package
Temperature Range
FAN4603MM18X
1.82V
6 Lead Molded Leadless Package (MLP),
4 x 2.5 x 1mm
–40 to 85°C
FAN4603MM15X
1.5V
6 Lead Molded Leadless Package (MLP),
4 x 2.5 x 1mm
–40 to 85°C
FAN4603MM12X
1.23V
6 Lead Molded Leadless Package (MLP),
4 x 2.5 x 1mm
–40 to 85°C
Note:
1. Other voltage options are available on request. Contact a Fairchild representative.
Packing
Tape and
Reel
Tape and
Reel
Tape and
Reel
© 2009 Fairchild Semiconductor Corporation
FAN4603 • Rev. 1.0.0
www.fairchildsemi.com
1 page  
Typical Performance
Unless otherwise specified, VIN = 3.7V, TA = 25°C.
www.DataSheet4U.com
Figure 4. 1.82 VOUT Efficiency
Figure 5. 1.82 VOUT Efficiency Over Temperature
Figure 6. 1.82VOUT Regulation (Normalized)
Figure 7. 1.82VOUT Regulation (Normalized)
Over Temperature
Figure 8. Quiescent Current Over Temperature (EN=VIN) Figure 9. Shutdown Current Over Temperature (EN=0V)
© 2009 Fairchild Semiconductor Corporation
FAN4603 • Rev. 1.0.0
5
www.fairchildsemi.com
5 Page 
www.DataSheet4U.com
Physical Dimensions
0.05 A
2X
2.50
PIN A1
MARK
CL
1
3
CL
TOP VIEW
1.10
0.90
A
B
CL
P1 0.25
0.95
0.95
0.13
0.32
0.50
6
3.70
1
4.00
0.78
1.10
0.40
6 1.45
0.10
CL 0.50
4 1.30 3
0.05 B
2X
0.63
0.80
2.70
1.45
4 0.30
0.10 C
LAND PATTERN
RECOMMENDATION
0.05
0.00
2.50
0.85
0.65 CL
1.20 3
CL
0.50
0.30
2
1.25
1.15
1
0.08 C
C
SEATING
PLANE
NOTES:
A) THIS PACKAGE IS NOT
PRESENTLY REGISTERED WITH
ANY STANDARDS COMMITTEE.
B) DIMENSIONS ARE IN
P1
MILLIMETERS.
C) DIMENSIONS ARE INCLUSIVE OF
BURRS, MOLD FLASH, AND TIE
4
1.45
1.35
0.68
5 0.48
BAR PROTRUSIONS.
D) DRAWING CONFORMS TO ASME
Y14.5M-1994
E) DRAWING FILENAME:
MKT-MOD06AArev3
6
0.40
0.15
4.00
PIN A1
MARK
(0.40)
0.23
(0.25)
BOTTOM VIEW
Figure 30.6-Lead, MicroModule QFN 2.5 x 4 x 1mm
Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner without
notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or obtain the most
recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty
therein, which covers Fairchild products.
Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:
http://www.fairchildsemi.com/packaging/.
© 2009 Fairchild Semiconductor Corporation
FAN4603 • Rev. 1.0.0
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet FAN4603.PDF ] | |
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