Off-Line PRC Controllers
Off-Line PRC Controllers with Integrated Power MOSFET
STR-A6100 Series
General Descriptions
The STR-A6100 series are po...
Description
Off-Line PRC Controllers with Integrated Power MOSFET
STR-A6100 Series
General Descriptions
The STR-A6100 series are power ICs for switching power supplies, incorporating a MOSFET and a current mode PRC controller IC.
PRC (Pulse Ratio Control) controls on-time with fixed off-time.
The IC includes a startup circuit and a standby function to achieve the low standby power. The rich set of protection features helps to realize low component counts, and high performance-to-cost power supply.
Package
DIP8
Not to Scale
S/OCP 1 VCC 2
GND
FB/OLP 4
8D 7D 6 5 ST
Features Current Mode Type Pulse Ratio Control Auto Standby Function
Normal Operation ------------------------------ PRC Mode Standby ---------------------------- Burst Oscillation Mode
No Load Power Consumption < 40mW Leading Edge Blanking Function Auto Bias Function Protections
Overcurrent Protection (OCP); pulse-by-pulse Overload Protection (OLP); auto-restart Overvoltage Protection (OVP); latched shutdown Thermal Shutdown Protection (TSD); latched shutdown
Typical Application Circuit
VAC
BR1 C1
T1 D51
C5 DST
R1 P
D1
C51 S
87
5
D D NC ST
C6 U1
STR-A6100
S/OCP VCC GND FB/OLP 1234
D2 R2 C2 D
L51
R54 PC1 R51
R55 R52
C52 R53 U2
R56
ROCP
DZ1 C4
C3 PC1
CY
VOUT (+)
C53
(-)
Lineup
Electrical Characteristics
Products STR-A61××
Fixed off-time
8 μs
STR-A61××M
11.5 μs
STR-A61××E
11.5 μs
* ST pin does not need Diode.
Auto bias function
Yes − −
Startup resistance
− −
Yes*
Power MOSFET Elect...
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