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PDF STR3A451D Data sheet ( Hoja de datos )
| Número de pieza | STR3A451D | |
| Descripción | Off-Line PWM Controllers | |
| Fabricantes | Sanken | |
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Off-Line PWM Controllers with Integrated Power MOSFET
STR3A400 Series
Data Sheet
Description
The STR3A400 series are power ICs for switching
power supplies, incorporating a MOSFET and a current
mode PWM controller IC.
The low standby power is accomplished by the
automatic switching between the PWM operation in
normal operation and the burst-oscillation under light
load conditions. The product achieves high
cost-performance power supply systems with few
external components.
Features
● Low Thermal Resistance Package
● Improving circuit efficiency (Since the step drive
control can keep VRM of secondary rectification
diodes low, the circuit efficiency can be improved by
low VF)
● Current Mode Type PWM Control
● Soft Start Function
● Automatic Standby Function
No Load Power Consumption < 15mW
● Operation Mode
Normal Operation -----------------------------PWM Mode
Light Load Operation ------------------------ Green-Mode
Standby ---------------------------- Burst Oscillation Mode
● Random Switching Function
● Slope Compensation Function
● Leading Edge Blanking Function
● Bias Assist Function
● Protections
Two Types of Overcurrent Protection (OCP):
Pulse-by-Pulse, built-in compensation circuit to
minimize OCP point variation on AC input voltage
Overload Protection (OLP): Auto-restart
Overvoltage Protection (OVP): Latched shutdown or
auto-restart
Thermal Shutdown (TSD): Latched shutdown or
auto-restart with hysteresis
Typical Application
VAC
BR1
C1
C4
T1 D51
C5 R1
P
D1
C51
S
8 76 5
D/ST D/ST DN/SCT D/ST
U1
STR3A400
S/OCP VCC GND FB/OLP
1234
D2 R2
C2 D
L51
R54
PC1 R51
R55
R52
C52 R53
U51
R56
VOUT
C53
GND
ROCP
C3
PC1
CY
TC_STR3A400_1_R2
Package
DIP8
Not to Scale
Lineup
● Electrical Characteristics
fOSC(AVG)(typ.) = 65 kHz
VDSS(min.) = 650 V
Products
STR3A45×
STR3A45×D
OVP, TSD Operation
Latched shutdown
Auto-restart
● MOSFET ON Resistance and Output Power, POUT*
POUT
POUT
Products
RDS(ON)
(Adapter)
(Open frame)
(max.) AC230V
AC85
~265V
AC230V
AC85
~265V
STR3A451
4.0 Ω 29.5 W 19.5 W 37 W
STR3A451D
23 W
STR3A453
1.9 Ω
STR3A453D
37 W
27.5 W
53 W
35 W
STR3A455
1.1 Ω
STR3A455D
45 W
35 W
65 W
44 W
* The output power is actual continues power that is measured
at 50 °C ambient. The peak output power can be 120 to
140 % of the value stated here. Core size, ON Duty, and
thermal design affect the output power. It may be less than
the value stated here.
Applications
● AC/DC adapter
● White goods
● Other SMPS
STR3A400-DSE Rev.2.1
SANKEN ELECTRIC CO.,LTD.
Sept. 18, 2015
http://www.sanken-ele.co.jp/en/
© SANKEN ELECTRIC CO.,LTD. 2014
1
1 page  
STR3A400 Series
Parameter
OLP Delay Time
FB/OLP Pin Clamp Voltage
OVP Threshold Voltage
Thermal Shutdown Operating
Temperature
Thermal Shutdown Hysteresis
Temperature
MOSFET
Drain-to-Source Breakdown
Voltage
Drain Leakage Current
Symbol
tOLP
VFB(CLAMP)
VCC(OVP)
Tj(TSD)
Tj(TSD)HYS
VDSS
IDSS
Conditions
IDS = 300 µA
VDS = VDSS
Pins
−
4−3
2−3
−
−
8–1
8–1
On Resistance
RDS(ON) IDS = 0.4 A 8 – 1
Switching Time
Thermal Resistance
Channel to Case Thermal
Resistance(2)
tf
θch-C
8–1
−
Min.
55
10.5
27.0
127
−
650
−
−
−
−
−
−
−
Typ.
75
11.8
29.1
145
80
−
−
−
−
−
−
−
−
Max.
90
13.5
31.2
−
Units
ms
V
V
°C
Notes
− °C 3A4××D
−V
300 μA
4.0 3A451 / 51D
1.9 Ω 3A453 / 53D
1.1 3A455 / 55D
250 ns
18
°C/W
3A451 / 51D
3A453 / 53D
17 °C/W 3A455 / 55D
(2) θch-C is thermal resistance between channel and case. Case temperature (TC) is measured at the center of the case top
surface.
3. Performance Curves
3.1 Derating Curves
100
100
80 80
60 60
40 40
20 20
0
0 25 50 75 100 125 150
Channel Temperature, Tch (°C)
0
25 50 75 100 125 150
Channel Temperature, Tch (°C)
Figure 3-1 SOA Temperature Derating Coefficient Curve Figure 3-2 Avalanche Energy Derating Coefficient Curve
STR3A400-DSE Rev.2.1
SANKEN ELECTRIC CO.,LTD.
Sept. 18, 2015
http://www.sanken-ele.co.jp/en/
© SANKEN ELECTRIC CO.,LTD. 2014
5
5 Page 
STR3A400 Series
7. External Dimensions
● DIP8
NOTES:
1) Dimension is in millimeters
2) Pb-free. Device composition compliant with the RoHS directive
8. Marking Diagram
8
YMD
1
Part Number (3A4×× / 3A4××D)
Lot Number
Y = Last Digit of Year (0-9)
M = Month (1-9,O,N or D)
D =Period of days (1 to 3)
1 : 1st to 10th
2 : 11th to 20th
3 : 21st to 31st
Sanken Control Number
STR3A400-DSE Rev.2.1
SANKEN ELECTRIC CO.,LTD.
Sept. 18, 2015
http://www.sanken-ele.co.jp/en/
© SANKEN ELECTRIC CO.,LTD. 2014
11
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet STR3A451D.PDF ] | |
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