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PDF AP4340S Data sheet ( Hoja de datos )

Número de pieza AP4340S
Descripción DYNAMIC PSR ACCELERATOR
Fabricantes Diodes 
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No Preview Available ! AP4340S Hoja de datos, Descripción, Manual

A Product Line of
Diodes Incorporated
AP4340S
DYNAMIC PSR ACCELERATOR
Description
Pin Assignments
The AP4340S is an output voltage detector for Primary Side Control
System. It is a low power loss solution. It detects the output voltage
and provides a periodical signal when the output voltage is lower than
a certain threshold. The periodical signal can be coupled by the
transformer to the primary side and provided as an awakening signal
for the main primary side controller. By fast response to secondary
side voltage, the AP4340S can effectively improve the transient
performance of Primary Side Control System.
AP4340S will enable a discharge circuit when it detects the output
voltage is higher than a certain threshold.
The AP4340S is available in SOT23 package.
(Top View)
GND
3
1
VCC
2
OUT
Features
SOT23
Fast Detector of Supply Voltages
33kHz Output Pulse
No External Components
Low Power Loss for Green Mode Applications
Totally Lead-free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. GreenDevice (Note 3)
Applications
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
FR1 L 1
D1,D2,
D3,D4 C1
+
C2
+
R1
C4 R11
D7
R12
L2
R8
R 2 D6 R9
C3
IC1
AP 3785
R10
VCC
NC OUT
CBC
FB
EM
GND
CS
Q1
D5
R5
R6
R7
TR1
D8
R13 R14
OUT VCC
C5
GND IC2
AP4340S
+
+
C6
CY 1
VO
AP4340S
Document number: DS37278 Rev. 4 - 2
1 of 10
www.diodes.com
January 2015
© Diodes Incorporated

1 page




AP4340S pdf
Performance Characteristics
Power-off Voltage vs. Ambient Temperature
3.0
2.5
2.0
1.5
1.0
0.5
0.0
-25
0 25 50 75 100 125 150
Ambient Temperature (oC)
A Product Line of
Diodes Incorporated
AP4340S
Power-on Voltage vs. Ambient Temperature
3.4
3.2
3.0
2.8
2.6
2.4
2.2
2.0
-25
0 25 50 75 100 125 150
Ambient Temperature (oC)
Trigger Voltage vs. Ambient Temperature
5.0
4.8
4.6
4.4
4.2
4.0
-25
0 25 50 75 100 125 150
Ambient Temperature (oC)
Output Current vs. Ambient Temperature
40
35
30
25
20
15
10
-25
0 25 50 75 100 125 150
Ambient Temperature (oC)
Duty Cycle vs. Ambient Temperature
15
12
9
6
3
0
-25
0 25 50 75 100 125 150
Ambient Temperature (oC)
Oscillation Period vs. Ambient Temperature
50
40
30
20
10
0
-25
0 25 50 75 100 125 150
Ambient Temperature (oC)
AP4340S
Document number: DS37278 Rev. 4 - 2
5 of 10
www.diodes.com
January 2015
© Diodes Incorporated

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