Off-Line PWM Controllers
Off-Line PWM Controllers with Integrated Power MOSFET
STR3A200 Series
Data Sheet
Description
The STR3A200 series are p...
Description
Off-Line PWM Controllers with Integrated Power MOSFET
STR3A200 Series
Data Sheet
Description
The STR3A200 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 ● Current Mode Type PWM Control ● Soft Start Function ● Auto Standby Function
No Load Power Consumption < 15mW ● Operation Mode
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) : Aauto-restart − Overvoltage Protection (OVP) : Latched shutdown or auto-restart − Thermal Shutdown (TSD) : Latched shutdown or auto-restart with hysteresis
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
STR3A200
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
TC_STR3A200_1_R1
Package
DIP8
Not to Scale
Lineup
● Electrical Characteristics
fOSC(AVG) = 67 kHz VDSS(...
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