|
|
PDF IS31LT3505 Data sheet ( Hoja de datos )
| Número de pieza | IS31LT3505 | |
| Descripción | 1.0MHZ BOOST CONVERTER | |
| Fabricantes | ISSI | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de IS31LT3505 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
|
No Preview Available !
IS31LT3505
1.0MHZ BOOST CONVERTER WITH 35V INTERNAL NMOS
OCTOBER 2011
DESCRIPTION
The IS31LT3505 is a constant current step-up
converter with internal NMOS. The step-up converter
topology allows series connection of the white LEDs
so the LED currents are identical for uniform
brightness as well as constant output voltage to drive
other devices. The output current of each channel
can be set by an external resistor and dimming the
brightness of LEDs with the PWM signal or DC
voltage. The IS31LT3505 operates with a switching
frequency up to 1 MHz. A low 0.3V feedback voltage
minimizes power loss in the current setting resistor
for better efficiency. With OVP circuit, the chip and
the system can be safe even if the load is not
connected.
IS31LT3505 is available in MSOP-10. It operates
from 6V to 30V over the temperature range of -40°C
to +85°C.
FEATURES
6V to 30V supply voltage
High efficiency: 90 % typical
PWM dimming control
Fast 1.0MHz switching frequency
Internal high power 35V NMOS
Internal soft start
Adjustable LED Open Protection
Over-temperature protection
MSOP-10
APPLICATIONS
TV monitor backlighting
PDA, handheld computer
GPS receiver
TYPICAL APPLICATION CIRCUIT
6.0V~30V
300Ω 100kΩ
L1
10μ H
D1
(Scho ttky , s s2 6)
CIN C1
22μ F 1μF
C2
1μF
4
EN
LX
10
http://www.DataSheet4U.net/
9
VDD
OVP
IS31LT3505
VP
6
2
10nF
10μF
1, 3, 5
GND
7
FB
R1
C3
1μF
R2
C OU T
22μ F
RSET
Figure 1 Application Circuit (Constant Current to Drive White LEDs)
Copyright © 2011 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any
time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are
advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products.
Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the
product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not
authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:
a.) the risk of injury or damage has been minimized;
b.) the user assume all such risks; and
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 09/01/2011
1
datasheet pdf - http://www.DataSheet4U.net/
1 page  
IS31LT3505
730
100
720
90
710
700
80
690
680
Vin=24VDC,RSET=0.42,L=10uH
670
25 26 27 28 29 30
Vout(V)
70
60
50
25
Vin=24VDC,RSET=0.42,L=10uH
26 27 28
Vout(V)
29
Figure 8 Iout vs. Vout Figure 9 Efficiency vs. Vout
320
310
300
290
280
270
260
250
6
10 14 18 22 26 30
Vin(V)http://www.DataSheet4U.net/
Figure 10 VFB voltage vs. Vin
Vin=12VDC, RSET=0.88, L=10uH, Vout=28V
30
Figure 11 Soft-start waveform
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 09/01/2011
5
datasheet pdf - http://www.DataSheet4U.net/
5 Page 
IS31LT3505
TAPE AND REEL INFORMATION
MSOP-10
http://www.DataSheet4U.net/
Integrated Silicon Solution, Inc. – www.issi.com
Rev. A, 09/01/2011
11
data
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet IS31LT3505.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| IS31LT3505 | 1.0MHZ BOOST CONVERTER | ISSI |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |