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PDF IRS25751LPBF Data sheet ( Hoja de datos )
| Número de pieza | IRS25751LPBF | |
| Descripción | High-Voltage Start-Up IC | |
| Fabricantes | International Rectifier | |
| Logotipo |  |
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HVICTM
Features
Up to 480V voltage capability
Constant output current (4.5mA)
Programmable upper threshold level
Fixed lower threshold (4.2V)
ENN input
Over-temperature shutdown
Ultra-low off current (2.5µA)
Internal 20.8V clamp on VOUT pin
Excellent latch immunity on all inputs & outputs
Integrated ESD protection on all pins
5-pin SOT-23 package
Applications
High-voltage start-up
Low standby power circuits
General purpose switched mode power electronics
Application Diagram
IRS25751LPBF
High-Voltage Start-Up IC
Description
The IRS25751 is a 480V high-voltage start-up
IC ideal for supplying initial supply starting current
from a high-voltage bus. The IRS25751 supplies
a constant current during start-up and then
consumes ultra-low standby (off) current.
Additional features include programmability of the
upper turn-off threshold, an ENN input, and over-
temperature protection. IR’s proprietary HVIC
technology provides robust operation from high
input voltage levels with simple yet flexible
features.
Package Options
5-Pin SOT-23
DC Bus (+)
From AUX
Supply
VCC (+)
CVCC
VCC (-)
R2
VOUT
1
R1 COM
2
VTH
3
VIN
5
ENN
4
DC Bus (-)
Ordering Information
Base Part Number
IRS25751LPBF
Package Type
5L-SOT-23
Standard Pack
Form
Quantity
Tape and Reel
3000
1 www.irf.com © 2015 International Rectifier
Orderable Part Number
IRS25751LTRPBF
January 15, 2015
1 page  
IRS25751LPBF
Absolute Maximum Ratings
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage
parameters are absolute voltages referenced to COM, all currents are defined positive into any pin. The thermal
resistance and power dissipation ratings are measured under board mounted and still air conditions.
Symbol
Definition
Min.
Max.
Units
VIN
VOUT
VTH
ENN
RΘja
TJ
TS
TL
VIN pin voltage
VOUT pin voltage
VTH pin voltage
ENN pin voltage
Thermal resistance, junction to
ambient
Junction temperature
5L-SOT-23
Storage temperature
IC Pin temperature (soldering, 10 seconds)
625
†
VCLAMP
-0.3 V
VOUT + 0.3
--- 191 ºC/W
-55 150
ºC
--- 300
† This IC contains voltage clamp structures between the VOUT and COM pins that has a nominal breakdown
voltage of 20.8V. Please note that this pin should not be driven by a DC, low impedance power source
greater than the VCLAMP specified in the Electrical Characteristics section.
5 www.irf.com © 2014 International Rectifier
November 18, 2014
5 Page 
Tape and Reel Details: 5-Pin SOT23
IRS25751LPBF
11 www.irf.com © 2015 International Rectifier
January 15, 2015
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet IRS25751LPBF.PDF ] | |
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