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PDF FP6346 Data sheet ( Hoja de datos )
| Número de pieza | FP6346 | |
| Descripción | 3A PWM Buck DC/DC Converter | |
| Fabricantes | Fiti | |
| Logotipo |  |
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fitipower integrated technology lnc.
FP6346
150KHz, 3A PWM Buck DC/DC Converter
Description
The FP63 46 seri es of regulators are monolithic
integrated circuit s ca pable of driving 3 A load with
excellent line and load regulation. These devices are
available in fi xed output volt ages of 3. 3V, 5V, 12V,
and an adjustable output version.
These reg ulators requi re a minimum number of
external com ponents a nd are sim pler to use by
internal f requency com pensation a nd a fixed
frequency oscillator.
Other features include a guara nteed ±4% tolerance
on output voltage under specified input voltage and
output load condition s, an d ±15% on the oscillator
frequency. S elf prote ction feature s in clude current
limit for the output swit ch and an ove r temperature
shutdown fo r complete prote ction unde r fau lt
conditions. The packages are available in a standard
5-lead TO-220, and 5-lead TO-263.
Features
● 3.3V, 5V, 12V and adjustable output version
● Adjustable version output voltage range, 1.23V to
18V±4%
●150kHz±15% fixed switching frequency
● Voltage mode non-synchronous PWM control
● Thermal-shutdown and current-limit protection
● ON /OFF shutdown control input
● Operating voltage can be up to 22V
● Output load current: 3A
● Low power standby mode
● Built-in switching transistor on chip
● TO-220-5L and TO-263-5L packages
Applications
● LCD monitor/TV
● External HDD
● Networking equipments
Pin Assignments
T6 Package (TO-263-5L)
TOP VIEW
1.VIN
2.OUT
3.GND
4.FB
5.SD
T1 Package (TO-220-5L)
TOP VIEW
1.VIN
2.OUT
3.GND
4.FB
5.SD
Figure 1. Pin Assignment of FP6346 (Top View)
Ordering Information
FP6346-□□□□
TR: Tape / Reel
P: Green
G: Green
Package Type
T1: TO-220-5L
T6: TO-263-5L
Output Voltage
Blank: Adjustable
33: Fixed output 3.3V
50: Fixed output 5.0V
12: Fixed output 12V
FP6346-1.3-FEB-2010
1
http://www.Datasheet4U.com
1 page  
fitipower integrated technology lnc.
Typical Performance Curves
FP6346
85 .0
82.5
80.0
5V
77.5
75.0
3.3V
72.5
70.0
67.5
65.0
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature(℃)
Figure 4. Efficiency vs. Temperature.
VIN=12V, VO=3.3V, 5.0V, load=3A
85.00
82.50
80.00
77.50
75.00
72.50
70.00
67.50
65.00
6
5V
3.3V
8 10 12 14 16 18 20 22
Vin(V)
Figure 5. Efficiency vs. VIN
VO=3.3V, 5.0V, load=3A
1.30
1.20
1.1 0
3A
1.0 0
2A
0.9 0
0.8 0
1A
0.7 0
0.6 0
0.5A
0.50
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperture(℃)
Figure 6. Saturation Voltage vs. Temperature
VIN=12V
1.80
1.60
1.40
1.20
1.00
0.80
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature(℃)
Figure 7. ON/OFF Threshold Voltage vs. Temperature
VIN=12V, load=0.5A
15 4
15 2
15 0
148
146
144
142
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature(℃)
5.20
5.15
5.10
5.05
5.00
4.95
4.90
4.85
4.80
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature(℃)
Figure 8. Frequency vs. Temperature.
VIN=12V,Vo=5V,load=0.5A
Figure 9. Vo vs. Temperature.
VIN=12V, load=3A
FP6346-1.3-FEB-2010
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet FP6346.PDF ] | |
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