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PDF AP3968 Data sheet ( Hoja de datos )
| Número de pieza | AP3968 | |
| Descripción | (AP3968 - AP3970) Primary Side Power Switcher | |
| Fabricantes | BCD | |
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Preliminary Datasheet
Primary Side Power Switcher for Off-line SMPS
AP3968/69/70/70S
General Description
The AP3968/69/70/70S consists of a primary side
regulation controller and a high voltage transistor,
and is specially designed for off-line power supplies
within 12W output power. Typical applications
include adapter for ADSL and auxiliary supplies.
The AP3968/69/70/70S operates at pulse frequency
modulation (PFM), and provides accurate constant
voltage, constant current (CV/CC) regulation without
requiring an opto-coupler and secondary control
circuitry. It has internal cable compensation function
for tight constant voltage regulation.
The AP3968/69/70/70S solution has fewer
component numbers, smaller size, and lower total
cost.
The AP3968 is packaged in SOIC-7. The
AP3969/70/70S is packaged in DIP-7 and DIP-8.
Features
• Primary Side Control for Eliminating
Opto-coupler and Secondary CV/CC Control
Circuitry
• Built-in NPN Transistor with 700VCBO
• Low Start-up Current: 0.2µA (Typ.)
• Internal Output Cable Voltage Drop
Compensation
• Random Frequency Modulation for Low EMI
• Short Circuit Protection
• Low Total Cost Solution
• Output Power Range (Note 1):
AP3968 for 5W Adapter
AP3969 for 7.5W Adapter
AP3970 for 12W Adapter
AP3970S for 10W Adapter
Note 1: Typical continuous power in a non-ventilated
enclosed adapter measured at 50ºC ambient.
Applications
• Chargers
• Adapters
• Set Top Boxes
• Auxiliary Supplies
• DVD
• LED Driver
SOIC-7
DIP-7
DIP-8
Dec. 2011 Rev. 1. 4
Figure 1. Package Types of AP3968/69/70/70S
BCD Semiconductor Manufacturing Limited
1
Free Datasheet http://www.datasheet4u.com/
1 page  
Preliminary Datasheet
Primary Side Power Switcher for Off-line SMPS
AP3968/69/70/70S
Ordering Information
Circuit Type
68: AP3968
69: AP3969
70: AP3970
70S: AP3970S
Package
M: SOIC-7
P7: DIP-7
P: DIP-8
AP39XX
-
G1: Green
TR: Tape & Reel
Blank: Tube
Package
SOIC-7
DIP-7
DIP-8
Temperature
Range
-40 to 85°C
Part Number
AP3968M-G1
AP3968MTR-G1
AP3969P7-G1
AP3970P7-G1
AP3970SP7-G1
AP3969P-G1
AP3970P-G1
AP3970SP-G1
Marking ID
AP3968M-G1
AP3968M-G1
AP3969P7-G1
AP3970P7-G1
AP3970SP7-G1
AP3969P-G1
AP3970P-G1
AP3970SP-G1
Packing Type
Tube
Tape & Reel
Tube
Tube
Tube
Tube
Tube
Tube
BCD Semiconductor's Pb-free products, as designated with "G1" suffix in the part number, are RoHS compliant
and green.
Dec. 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
5
Free Datasheet http://www.datasheet4u.com/
5 Page 
Preliminary Datasheet
Primary Side Power Switcher for Off-line SMPS
AP3968/69/70/70S
Typical Application
Figure 11. Typical Application of AP3969 (9V/800mA)
Item
C1
C2
C3
C5
C8
C10
C11
C12, C13
D1 to D6
D12
L1
L2
Description
10.0µF/400V,
electrolytic
4.7µF/400V,
electrolytic
3.3µF/50V, electrolytic
1nF/1kV, ceramic
0.01µF, 0805
1nF/250Vac, Y1
capacitor
1nF, 0805
470µF/16V
1N4007, rectifier diode
SB3100
470µH, inductor
Bead, 0805
QTY
1
1
1
1
1
1
1
2
6
1
1
1
Item
U1
R1
R3
R5
R6
R7
R8
R9
R10
R11
R12
T1
Description
AP3969
11Ω, 2W
3.3MΩ/0.25W
3.9Ω , 0805
150KΩ, 1206
1Ω, 1206
20KΩ, 0805
13KΩ, 0805
360Ω, 0805
27Ω, 0805
1.2kΩ, 0805
EE16 core, PC40,
transformer
QTY
1
1
1
1
1
1
1
1
1
1
1
1
Dec. 2011 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
11
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet AP3968.PDF ] | |
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