1Ln_lOUS inckrrsjly isJriemd wiith a lightnwand1'combination thawroximuesme e eYe-resL:onsecruride._ 2,ialjs the off^axis .ankwhichbe rurninovs; intensuyishaIf the axial Is iruensily 3Thi: d0nanlwa\velength(&:rived fmkOE c¨tichy dinands the swavelenghIoolortbe de.vice_
R1110N351B-GFOL on stock| Characteristic | Symbol | Test condition | Min | Typ. | Max | Unit |
| UVLO SECTION |
| Start threshold voltage | VSTART | | 14 | 15 | 16 | V |
| Stop operating voltage | VSTOP | After turn on | 9 | 10 | 11 | V |
| OSCILLATOR SECTION |
| Initial accuracy | FOSC | Ta= 25IC | 18 | 20 | 22 | kHz |
| Frequency change with temperature Iz J | | | -25IC " Ta " +85IC | | +5 | +10 | % |
| Maximum duty cycle | DMAX | | 92 | 95 | 98 | % |
| FEEDBACK SECTION |
| Feedback source current | IFB | Ta = 25IC, Vfb = GND | 0.7 | 0.9 | 1.1 | mA |
| Shutdown Feedback voltage | VSD | | 6.9 | 7.5 | 8.1 | V |
| Shutdown delay current | ldelay | Ta = 25IC, 5V " Vfb "VSD | 1.4 | 1.8 | 2.2 | |
| SYNC. & SOFT START SECTION |
| Soft start voltage | VSs | VFB= 2V | 4.7 | 5.0 | 5.3 | V |
| Soft start current | ISS | Sync & S/S = GND | 0.8 | 1.0 | 1.2 | mA |
| Sync threshold voltaget'~ | VSYTH | Vfb= 5V | 6.0 | 6.4 | 6.8 | V |
| REFERENCE SECTION |
| Output voltage ti} | Vref | Ta= 25IC | 4.80 | 5.00 | 5.20 | V |
| Temperature Stability c'iz J | Vrefi~jr | -25IC " Ta " +85IC | | O3 | 0.6 | mVnC |
| CURRENT LIMIT (SELF-PROTECTION) SECTION |
| Peak Current Limit | lOVER | Max. inductor current | 3.52 | 4.00 | 4.48 | A |
| PROTECTION SECTION |
| Thermal shutdown temperature (Tj) Li) | TSD | | 140 | 160 | | YC |
| Over voltage protection voltage | VOVP | | 23 | 25 | 28 | V |
| TOTAL DEVICE SECTION |
| Start Up current | ISTART | VCC=14V | 0.1 | 0.3 | 0.55 | mA |
| Operating supply current (control part only) | IOP | Ta= 25IC | 6 | 12 | 18 | mA |
| VCC zener voltage | VZ | ICC= 20mA | 30 | 32.5 | 35 | V |
| | | | | | |
The W781E52 architecture consists of a core controller surrounded by various registers, five general purpose I/O ports, 256 bytes of RAM, three timer/counters, and a serial port. The processor supports 111 different opcodes and references both a 64K program address space and a 64K data storage space.
