STR3A100 Datasheet, PDF (1/25 Pages) Sanken electric – Off-Line PWM Controllers with Integrated Power MOSFET

Off-Line PWM Controllers with Integrated Power MOSFET
STR3A100 Series
General Descriptions
The STR3A100 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.
Package
DIP8
Not to Scale
Features
 Low Thermal Resistance Package
 Current Mode Type PWM Control
 Soft Start Function
 No Load Power Consumption < 15mW
 Auto Standby Function
Normal Operation ----------------------------- PWM 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 Protection (TSD); latched
shutdown or auto-restart
Typical Application Circuit
VAC
BR1
C1
C4
T1
D51
C5
R1
P
D1
C51
S
8
76
5
D/ST D/ST DN/SCT D/ST
U1
STR3A100
S/OCP VCC GND FB/OLP
1234
D2 R2
C2
D
L51
R54
PC1 ^R51
R55
R52
C52 R53
U2
R56
VOUT
C53
GND
ROCP
C3
PC1
CY
Lineup
 Electrical Characteristics
Products
f_OSC(AVG)
STR3A1××
67 kHz
STR3A1××D
67 kHz
STR3A1××HD
100 kHz
V_DSS(MIN)
(max.)
650 V
650 V
700 V
OVP
/TSD
Latched
shutdown
Auto
restart
Auto
restart
 MOSFET ON Resistance and Output Power, P_OUT*
P_OUT
P_OUT
Products
R_DS(ON) ^(Adapter)
(Open frame)
(max.)
AC230V
AC85
~265V
AC230V
AC85
~265V
f_OSC(AVG) = 67 kHz
STR3A151
STR3A151D
4.0 Ω
29.5 W 19.5 W
37 W
23 W
STR3A152
STR3A152D
3.0 Ω 33 W 23.5 W 45 W 29 W
STR3A153
STR3A153D
1.9 Ω 37 W 27.5 W 53 W 35 W
STR3A154
STR3A154D
1.4 Ω 41 W 31 W 60 W 40 W
STR3A155
STR3A155D
1.1 Ω 45 W 35 W 65 W 44 W
f_OSC(AVG) = 100 kHz
STR3A161HD 4.2 Ω 25 W 20 W 36 W 24 W
STR3A162HD 3.2 Ω 28 W 23 W 40 W 28 W
STR3A163HD 2.2 Ω 32 W 25.5 W 46 W 33.5 W
* The output power is based on the thermal ratings, and the peak
output power can be 120 to 140 % of the value stated here. At low
output voltage, small core and short ON Duty, the output power
may be less than the value stated here.
Applications
 Low power AC/DC adapter
 White goods
 Auxiliary power supply
 Other SMPS
STR3A100 - DS Rev.1.31
SANKEN ELECTRIC CO.,LTD.
1
Jan. 28, 2014
http://www.sanken-ele.co.jp/en/