|
|
PDF ISL85033 Data sheet ( Hoja de datos )
| Número de pieza | ISL85033 | |
| Descripción | Wide VIN Dual Standard Buck Regulator | |
| Fabricantes | Intersil | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ISL85033 (archivo pdf) en la parte inferior de esta página. Total 25 Páginas | ||
|
No Preview Available !
www.DataSheet4U.com
Wide VIN Dual Standard Buck Regulator With
3A/3A Continuous Output Current
ISL85033
The ISL85033 is a dual standard buck regulator
capable of 3A per channel continuous output current.
With an input range of 4.5V to 28V, it provides a high
frequency power solution for a variety of point of load
applications.
The PWM controller in the ISL85033 drives an internal
switching N-Channel power MOSFET and requires an
external Schottky diode to generate the output
voltage. The integrated power switch is optimized for
excellent thermal performance up to 3A of output
current. The PWM regulator switches at a default
frequency of 500kHz and it can be user programmed
or synchronized from 300kHz to 2MHz. The ISL85033
utilizes peak current mode control to provide flexibility
in component selection and minimize solution size. The
protection features include overcurrent, UVLO and
thermal overload protection.
The ISL85033 is available in a small 4mmx4mm Thin
Quad Flat Pb-free (TQFN) package.
Related Literature*(see page 24)
• See AN1574 ”ISL85033DUALEVAL1Z Wide VIN
Dual Standard Buck Regulator With 3A/3A Output
Current”
Features
• Wide Input Voltage Range from 4.5V to 28V
• Adjustable Output Voltage with Continuous Output
Current up to 3A
• Current Mode Control
• Adjustable Switching Frequency from 300kHz to 2MHz
• Independent Power-Good Detection
• Selectable In-Phase or Out-of-Phase PWM
Operation
• Independent, Sequential, Ratiometric or Absolute
Tracking Between Outputs
• Internal 2ms Soft-start Time
• Overcurrent/Short Circuit Protection, Thermal
Overload Protection, UVLO
• Boot Undervoltage Detection
• Pb-Free (RoHS Compliant)
Applications*(see page 24)
• General Purpose Point of Load DC/DC Power
Conversion
• Set-top Boxes
• FPGA Power and STB Power
• DVD and HDD Drives
• LCD Panels, TV Power
• Cable Modems
100
90
80 12VOUT 1MHz
70
60
50
40
0.0 0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT LOAD (A)
FIGURE 1. EFFICIENCY vs LOAD, VIN = 28V, TA = +25°C
June 24, 2010
FN6676.1
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2010. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
Functional Block Diagram
ISL85033
www.DataSheet4U.com
VCC
5MΩ
-10%
BOOT UV
DETECTION
SS2
EN2
SOFT-START
CONTROL
VOLTAGE
MONITOR
FAULT
MONITOR
EA
0.8V
REFERENCE
COMP2
CSA2
GATE
DRIVE
CSA2
VIN1
LDO
POWER-ON
VCC = 5V RESET
MONITOR
VIN1
SLOPE COMP
+
THERMAL
MONITOR
+150°C
CSA2
CSA1
BOOT
REFRESH
CONTROL
OSCILLATOR
SLOPE COMP
CSA1
+
EN1
SS1
VCC
FAULT
MONITOR
0.8V
REFERENCE
CONTROL
SOFT-START
MONITOR
VOLTAGE
EA
VCC 5MΩ
-10%
COMP1
CSA1
DRIVE
GATE
BOOT
REFRESH
CONTROL
BOOT UV
DETECTION
VIN2
PHASE2
PGND2
SYNCOUT
FS
SYNCIN
VIN1
PHASE1
PGND1
EPAD GND
5 FN6676.1
June 24, 2010
5 Page 
ISL85033
www.DataSheet4U.com
Typical Performance Curves
5.04
Circuit of Figure 2. VIN = 12V, VOUT1 = 5V, VOUT2 = 3.3V, IOUT1 = 3A,
IOUT2 = 3A, TA = -40°C to +85°C, unless otherwise noted. Typical
values are at TA = +25°C. (Continued)
3.329
5.03
5.02
5.01
5.00
28VIN
9VIN
12VIN
3.328
3.326
3.325
3.323
28VIN
18VIN
4.99
4.98
0123456
OUTPUT LOAD (A)
FIGURE 10. VOUT REGULATION vs LOAD, CURRENT
SHARING, TA = +25°C, 5VOUT,
FSW = 500kHz
3.322
12VIN
3.320
0
0.5 1.0 1.5 2.0 2.5 3.0
OUTPUT LOAD (A)
FIGURE 11. VOUT REGULATION vs LOAD, CHANNEL 2,
TA = +25°C, 3.3VOUT, FSW = 500kHz
5.04
5.03
5.02
5.01
5.00
4.99
3A 2A 0A
4.98
0
5 10 15 20 25 30
INPUT VOLTAGE (V)
FIGURE 12. OUTPUT VOLTAGE REGULATION vs VIN,
CHANNEL 1, TA = +25°C, 5VOUT,
FSW = 500kHz
5.02
5.01
5.00
4.99
0A
4.98
4.97
4A 6A
4.96
0
5 10 15 20 25 30
INPUT VOLTAGE (V)
FIGURE 13. OUTPUT VOLTAGE REGULATION vs VIN,
CURRENT SHARING, TA = +25°C, 5VOUT,
FSW = 500kHz
3.340
3.335
3.330
3.325
3.320
3.315
0A 2A 3A
3.310
0
5 10 15 20 25 30
INPUT VOLTAGE (V)
FIGURE 14. OUTPUT VOLTAGE REGULATION vs VIN,
CHANNEL 2, TA = +25°C, 3.3VOUT,
FSW = 500kHz
11
LX1 5V/DIV
VOUT1 RIPPLE 20mV/DIV
IL1 0.1A/DIV
FIGURE 15. STEADY STATE OPERATION AT NO LOAD
CHANNEL 1
FN6676.1
June 24, 2010
11 Page | ||
| Páginas | Total 25 Páginas | |
| PDF Descargar | [ Datasheet ISL85033.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ISL85033 | Wide VIN Dual Standard Buck Regulator | Intersil |
| 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 |