AP4340 PDF даташит
Спецификация AP4340 изготовлена «BCD Semiconductor» и имеет функцию, называемую «DYNAMIC PSR ACCELERATOR». |
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Детали детали
Номер произв | AP4340 |
Описание | DYNAMIC PSR ACCELERATOR |
Производители | BCD Semiconductor |
логотип |
13 Pages
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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
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DYNAMIC PSR ACCELERATOR
Pin Configuration
Z Package
(TO-92 Bulk Packing)
3 OUT
2 GND
1 VCC
N Package
(SOT-23)
3
Preliminary Datasheet
AP4340
Z Package
(TO-92 Ammo Packing)
3 OUT
2 GND
1 VCC
12
Figure 2. Pin Configuration of AP4340 (Top View)
Pin Description
Pin Number
TO-92 SOT-23
11
32
23
Pin
Name
Function
VCC
OUT
GND
This pin is the positive supply voltage input. VCC signal is also used
to detect the secondary output voltage
This pin supplies the pulse output current when VCC is lower than
the internal trigger voltage
This pin is the control ground
Aug. 2011 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
2
No Preview Available ! |
DYNAMIC PSR ACCELERATOR
Functional Block Diagram
Preliminary Datasheet
AP4340
VCC 1 (1)
Power
Regulator
VDD
3 (2)
OUT
- Dynamic
Out Comp
VREF
+
Logic
A (B)
A for TO-92
B for SOT-23
+
VREF
-
UVLO
OSC
UVLO
VDD
Band-Gap VREF
2 (3)
GND
Figure 3. Functional Block Diagram of AP4340
Ordering Information
AP4340
-
Circuit Type
Package
Z: TO-92
N: SOT-23
G1: Green
Blank: Bulk
TR: Tape & Reel or Ammo
Package
TO-92
SOT-23
Temperature Range
-40 to 85°C
Part Number
AP4340Z-G1
AP4340ZTR-G1
AP4340NTR-G1
Marking ID
4340Z-G1
4340Z-G1
GT2
Packing Type
Bulk
Ammo
Tape & Reel
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.
Aug. 2011 Rev. 1. 1
BCD Semiconductor Manufacturing Limited
3
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