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PDF EUP2624 Data sheet ( Hoja de datos )
| Número de pieza | EUP2624 | |
| Descripción | 620kHz/1.25MHz Step-up DC/DC Converter | |
| Fabricantes | Eutech Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de EUP2624 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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EUP2624
620kHz/1.25MHz Step-up DC/DC Converter
DESCRIPTION
The EUP2624 is a high performance current mode, PWM
step-up converter with pin selectable operating frequency.
With an internal 2.1A, 170m MOSFET, it can generate
12V at up to 500mA output current from a 5V supply. The
selectable 620kHz and 1.25MHz allows smaller inductors
and faster transient response. An external compensation pin
gives the user greater flexibility in setting loop
compensation allowing the use of low ESR Ceramic output
capacitors. Soft-start is controlled with an external
capacitor, which determines the input current ramp rate
during start-up.
When shut down, it draws 10µA of current and can
operate down to 2.5V input supply. These features along
with 1.25MHz switching frequency makes it an ideal
device for portable equipment and TFT-LCD displays.
The EUP2624 is available in an 8-pin MSOP package. The
device is specified for operation over the full -40°C to
+85°C temperature range.
FEATURES
z 90% Efficiency
z 2.1A, 170mΩ Power MOSFET
z 2.5V to 5.5V Input Range
z Adjustable Output Voltage up to 28V
z 620kHz/1.25MHz Switching Frequency Selection
z Adjustable Soft-Start
z Internal Thermal Protection
z Small MSOP-8 package
z RoHS Compliant and 100% Lead (Pb)-Free
APPLICATIONS
z TFT-LCD Displays
z DSL Modems
z Set-Top Boxes
z PCMCIA Cards
z Portable Equipment
z Handheld Devices
Typical Application Circuit
DS2624 Ver1.0 July .2006
Figure 1. 5V to 12V Step-Up
1
1 page  
EUP2624Tel: 0755-8398 3377 / 135 9011 2223 http://www.gofotech.com
Typical Operating Characteristics
620kHz Efficiency vs. Load Current
95
90
V =8V
OUT
V =5.5V
IN
85
80 V =3V
IN
75
70 V =2.5V
IN
65
60
55
50
45
40
35
30
1 10 100 1000
LOAD CURRENT (mA)
620kHz Switching Frequency vs. Temperature
630
620
610
V =5.5V
IN
600
590
580
V =2.5V
IN
570
560
550
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE(0C)
FSLCT Pin Current vs. FSLCT Pin Voltage
6.6
6.4
6.2
6.0
T=-400C
5.8
T=250C
5.6
5.4 T=850C
5.2
5.0
2.5
3.0 3.5 4.0 4.5 5.0
FSLCT VOLTAGE(V)
5.5
620kHz Switching I vs. Temperature
Q
2.50
2.25
V =5.5V
IN
2.00
1.75
1.50
1.25
V =2.5V
IN
1.00
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE(0C)
Switching Current Limit vs. Temperature
3.2
V =8V
OUT
3.0
2.8
V =5.5V
IN
2.6
2.4
V =3V
2.2 IN
V =2.5V
IN
2.0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE(0C)
1.25MHz Switching I vs. Temperature
Q
4.00
3.75
3.50
V =5.5V
IN
3.25
3.00
2.75
2.50
2.25
2.00 V =2.5V
IN
1.75
1.50
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE(0C)
DS2624 Ver1.0 July .2006
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet EUP2624.PDF ] | |
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