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PDF APR343 Data sheet ( Hoja de datos )
| Número de pieza | APR343 | |
| Descripción | SECONDARY SIDE SYNCHRONOUS RECTIFICATION CONTROLLER | |
| Fabricantes | Diodes | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de APR343 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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A Product Line of
Diodes Incorporated
APR343
SECONDARY SIDE SYNCHRONOUS RECTIFICATION CONTROLLER
Description
Pin Assignments
APR343 is a secondary side MOSFET driver for synchronous
rectification in DCM operation, which integrates the output voltage
detection function for primary side control system.
The synchronous rectification can effectively reduce the secondary
side rectifier power dissipation and provide high performance solution.
By sensing MOSFET drain-to-source voltage, APR343 can output
ideal drive signal with less external components. It can provide high
performance solution for 5V output voltage application.
Same as AP4341, APR343 detects the output voltage and provides a
periodical signal when the output voltage is lower than a certain
threshold. By fast response to secondary side voltage, APR343 can
effectively improve the transient performance of primary side control
system.
The APR343 is available in SOT25 package.
Features
(Top View)
DRISR 1
GND 2
VCC 3
5 VDET
4 AREF
Applications
SOT25
Synchronous Rectification for DCM Operation Flyback
Eliminate Resonant Ring Interference
Fast Detector of Supply Voltage
Fewest External Components
Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Adapters/Chargers for Cell/Cordless Phones, ADSL Modems,
MP3 and Other Portable Apparatus
Standby and Auxiliary Power Supplies
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Typical Applications Circuit
T1
+
C20
Q2
C22
R21
5 13
VDET DRISR VCC
APR343
AREF
4
R20
GND
2
R22
C21
APR343
Document number: DS36884 Rev. 4 - 2
1 of 12
www.diodes.com
December 2014
© Diodes Incorporated
1 page  
Performance Characteristics
Startup Voltage vs. Temperature
3.50
3.25
3.00
2.75
2.50
2.25
2.00
-40 -20 0 20 40 60 80 100 120 140
Temperature (oC)
Internal Trigger Voltage vs. Temperature
5.4
5.3
5.2
5.1
5.0
4.9
4.8
4.7
-40 -20 0 20 40 60 80 100 120 140
Temperature (oC)
Overshoot Voltage for Discharge vs. Temperature
6.0
5.8
5.6
5.4
5.2
5.0
-40 -20 0 20 40 60 80 100 120 140
Temperature (oC)
A Product Line of
Diodes Incorporated
APR343
UVLO vs. Temperature
3.5
3.0
2.5
2.0
1.5
1.0
-40 -20 0 20 40 60 80 100 120 140
Temperature (oC)
Internal Trigger Current vs. Temperature
80
70
60
50
40
30
20
10
0
-40 -20 0 20 40 60 80 100 120 140
Temperature (oC)
Overshoot Current for Discharge vs. Temperature
160
140
120
100
80
60
40
20
0
-40 -20 0 20 40 60 80 100 120 140
Temperature (oC)
APR343
Document number: DS36884 Rev. 4 - 2
5 of 12
www.diodes.com
December 2014
© Diodes Incorporated
5 Page 
Suggested Pad Layout
(1) Package Type: SOT25
A Product Line of
Diodes Incorporated
APR343
E2
E1
GZ
Y
X
Dimensions
Value
Z
(mm)/(inch)
3.600/0.142
G
(mm)/(inch)
1.600/0.063
X
(mm)/(inch)
0.700/0.028
Y
(mm)/(inch)
1.000/0.039
E1
(mm)/(inch)
0.950/0.037
E2
(mm)/(inch)
1.900/0.075
APR343
Document number: DS36884 Rev. 4 - 2
11 of 12
www.diodes.com
December 2014
© Diodes Incorporated
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet APR343.PDF ] | |
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