IRS25751LPBF [INFINEON]
Analog Circuit;
| 型号： | IRS25751LPBF |
| 厂家： | 
Infineon |
| 描述： | Analog Circuit |
| 文件： | 总13页 (文件大小：604K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IRS25751LPBF
HVICTM
High-Voltage Start-Up IC
Features
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.
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
Package Options
Applications
High-voltage start-up
Low standby power circuits
General purpose switched mode power electronics
5-Pin SOT-23
Application Diagram
DC Bus (+)
VCC (+)
CVCC
VOUT
VIN
5
From AUX
Supply
1
R1
COM
VCC (-)
2
R2
VTH
ENN
3
4
DC Bus (-)
Ordering Information
Standard Pack
Base Part Number
Package Type
5L-SOT-23
Orderable Part Number
IRS25751LTRPBF
January 15, 2015
Form
Tape and Reel
Quantity
IRS25751LPBF
3000
1
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© 2015 International Rectifier
IRS25751LPBF
Functional Block Diagram
High-Voltage
DC Bus
DAUX
IREG
VOUT
COM
VTH
VIN
(+)
1
2
3
5
VCC
Auxiliary
Supply
20.8V
CVCC
R1
ON/OFF
4.2V
ON
(-)
OFF
Logic
OTP
OFF
R2
1.14V
OFF
ENN
4
1.2V
2
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© 2015 International Rectifier
January 15, 2015
IRS25751LPBF
Timing Diagram (VIN, IOUT, VOUT)
VIN
VBUS
t
IOUT
IREG
t
VOUT
VOUT+
VOUT-
t
OFF
ON
OFF
ON
(auxiliary VCC supply
takes over)
3
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© 2015 International Rectifier
January 15, 2015
IRS25751LPBF
Qualification Information†
Industrial††
(per JEDEC JESD 47E)
Qualification Level
Comments: This family of ICs has passed JEDEC’s
Industrial qualification. IR’s Consumer qualification level is
granted by extension of the higher Industrial level.
MSL1†††
Moisture Sensitivity Level
SOT-23
(per IPC/JEDEC J-STD-020C)
Class B
Machine Model
Human Body Model
(per JEDEC standard EIA/JESD22-A115-A)
ESD
Class 2
(per EIA/JEDEC standard JESD22-A114-B)
Class I, Level A
IC Latch-Up Test
RoHS Compliant
(per JESD78A)
Yes
†
Qualification standards can be found at International Rectifier’s web site http://www.irf.com/
†† Higher qualification ratings may be available should the user have such requirements. Please contact your
International Rectifier sales representative for further information.
††† Higher MSL ratings may be available for the specific package types listed here. Please contact your
International Rectifier sales representative for further information.
4
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© 2015 International Rectifier
January 15, 2015
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
VIN
Definition
Min.
Max.
625
VCLAMP†
Units
VIN pin voltage
VOUT pin voltage
VTH pin voltage
VOUT
VTH
-0.3
V
VOUT + 0.3
ENN
ENN pin voltage
Thermal resistance, junction to
ambient
R
5L-SOT-23
---
-55
---
191
150
300
ºC/W
ºC
Θja
TJ
Junction temperature
Storage temperature
TS
TL
IC Pin temperature (soldering, 10 seconds)
†
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
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© 2014 International Rectifier
November 18, 2014
IRS25751LPBF
Recommended Operating Conditions
For proper operation the device should be used within the recommended conditions.
Symbol
VIN
Definition
Min.
Max.
480
Units
V
VIN pin voltage
-0.3
VOUT
VTH
VOUT pin voltage
VTH pin voltage
ENN pin voltage
Junction temperature
VCLAMP
COM
-40
VOUT
125
VENN
TJ
ºC
6
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© 2014 International Rectifier
November 18, 2014
IRS25751LPBF
Recommended Component Values
Symbol
R1
Component
VTH pin programming resistor
VTH pin programming resistor
VOUT pin external capacitor
Min.
---
Typ.
1.0
Max.
---
Units
Meg Ohm
K Ohm
F
R2
---
90.9
10.0
---
CVCC
---
---
7
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© 2015 International Rectifier
January 15, 2015
IRS25751LPBF
Electrical Characteristics
R1 = 1Meg Ohm, R2 = 90.9K Ohm, Ta = 25 °C unless otherwise specified. All parameters are referenced to
COM pin.
Symbol
Definition
Min
Typ
Max Units
Test Conditions
VOUT Pin Characteristics
VOUT-
VOUT pin falling turn-on threshold
VOUT pin internal clamp voltage
3.78
19.8
4.2
4.62
V
VIN = COM,
IVOUT = 5mA
VCLAMP
20.8
21.8
VIN = 400V,
VOUT = COM
IREG
Regulated output current
---
4.6
---
mA
VIN Pin Characteristics
I_VIN_OFF VIN pin off-state leakage current
VTH Pin Characteristics
---
2.5
---
VIN = 400V
A
VTH+
VTH pin rising turn-off threshold
1.08
1.14
1.2
V
ENN Pin Characteristics
VENN+
ENN pin rising disable threshold
---
1.2
---
V
Over-Temperature Protection
Junction temperature thermal
shutdown
TjSD
---
---
155
50
---
---
ºC
Junction temperature thermal
shutdown hysteresis
TjSD_HYS
8
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© 2015 International Rectifier
January 15, 2015
IRS25751LPBF
Pin Definitions
Pin
1
Name
Description
Output voltage and current
IC ground
VOUT
COM
VTH
ENN
VIN
2
Programmable upper VOUT turn-off threshold input
Enable pin (high level disables IC)
High-voltage input
3
4
5
Pin Assignments
VOUT
VIN
1
5
COM
2
ENN
VTH
3
4
5-Lead SOT 23
9
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© 2015 International Rectifier
January 15, 2015
IRS25751LPBF
Package Details: 5-Pin SOT23
10 www.irf.com
© 2015 International Rectifier
January 15, 2015
IRS25751LPBF
Tape and Reel Details: 5-Pin SOT23
11 www.irf.com
© 2015 International Rectifier
January 15, 2015
IRS25751LPBF
Tape and Reel Details: 5-Pin SOT23
12 www.irf.com
© 2015 International Rectifier
January 15, 2015
IRS25751LPBF
Part Marking Information: 5-Pin SOT23
Top Marking
Bottom Marking
C
The information provided in this document is believed to be accurate and reliable. However, International Rectifier assumes no responsibility
for the consequences of the use of this information. International Rectifier assumes no responsibility for any infringement of patents or of
other rights of third parties which may result from the use of this information. No license is granted by implication or otherwise under any
patent or patent rights of International Rectifier. The specifications mentioned in this document are subject to change without notice. This
document supersedes and replaces all information previously supplied.
For technical support, please contact IR’s Technical Assistance Center
http://www.irf.com/technical-info/
WORLD HEADQUARTERS:
233 Kansas St., El Segundo, California 90245
Tel: (310) 252-7105
13 www.irf.com
© 2015 International Rectifier
January 15, 2015
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