The Series STR-A6100 are PRC topology ICs (fixed off-time and variable on-time control) designed for a relatively low output power SMPS design of which output power is up to 20 W at universal input or 24 W at 230 VAC input. The auto-standby function reduces input power consumption to less than 50 mW at 230 VAC input by the burst-mode operation, which is stabilized by the auto-bias function to avoid a hiccup phenomenon. Current-mode feedback and leading-edge blanking stabilize the entire power supply operation. Various protections such as overvoltage, overcurrent, overload, thermal shutdown, and an avalanche-guaranteed MOSFET secure good system-level reliability.
These devices are provided in an 8-pin mini-DIP plastic package.
| Max. PO (W) at |
Max. MOSFET |
Part Number |
| 120 V ac |
230 V ac |
85 ~ 265 V ac |
VDSS (V) |
rDS(on) (Ω) |
| 12 |
- |
- |
500 |
3.95 |
STR-A6131 |
| 16 |
- |
- |
500 |
2.62 |
STR-A6132 |
| - |
8 |
5 |
800 |
19.2 |
STR-A6169 |
| - |
13 |
10 |
650 |
6.0 |
STR-A6159 |
| - |
16 |
12 |
650 |
3.95 |
STR-A6151 |
| - |
24 |
20 |
650 |
1.90 |
STR-A6153E |