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PDF AP4340 Data sheet ( Hoja de datos )
| Número de pieza | AP4340 | |
| Descripción | DYNAMIC PSR ACCELERATOR | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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Preliminary Datasheet
DYNAMIC PSR ACCELERATOR
AP4340
General Description
The AP4340 is an output voltage detector for Primary
Side Control System. 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 AP4340 can effectively
improve the transient performance of Primary Side
Control System.
The AP4340 is available in TO-92 and SOT-23
packages.
Features
• Fast Detector of Supply Voltages
• 37kHz Output Pulse
• No External Components
Applications
· Adapters/Chargers for Cell/Cordless Phones,
ADSL Modems, MP3 and Other Portable
Apparatus
· Standby and Auxiliary Power Supplies
TO-92 (Bulk Packing)
TO-92 (Ammo Packing)
SOT-23
Aug. 2011 Rev. 1. 1
Figure 1. Package Types of AP4340
BCD Semiconductor Manufacturing Limited
1
1 page  
Preliminary Datasheet
DYNAMIC PSR ACCELERATOR
AP4340
Electrical Characteristics
VCC=5V, TA=25℃, unless otherwise specified.
Parameter
Conditions
Supply Voltage ( VCC Pin )
Power-on Voltage (VON)
Startup Current
Operating Current
Power-off Voltage
VCC=VON-0.2V
OUT pin floating
VCC=5V
Internal Trigger Voltage
Output Section/ Oscillator Section
Duty Cycle
VCC=4.5V
Normal Frequency
Output Maximum Current
VCC=4.5V
OUT pin connect
100Ω to GND
Min
4.1
50
50
3.45
4.83
1.5
25
15
Note 2: The system output voltage is 5V.
Typ Max Unit
4.4 4.8 V
200 245 µA
240 285 µA
3.8 4.15 V
4.9 5 V
5 6.5 %
38 50 kHz
23 30 mA
Aug. 2011 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
5
5 Page 
DYNAMIC PSR ACCELERATOR
Mechanical Dimensions (Continued)
Preliminary Datasheet
AP4340
TO-92 (Ammo Packing)
Unit: mm(inch)
Aug. 2011 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet AP4340.PDF ] | |
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