UC3843BN Electronics Components Integrated Circuit Chip Program Memory
electronic integrated circuit
,linear integrated circuits
UC3842B, UC3843B, UC2842B, UC2843B, NCV3843BV
High Performance Current Mode Controllers
The UC3842B, UC3843B series are high performance fixed frequency current mode controllers. They are specifically designed for Off−Line and DC−DC converter applications offering the designer a cost−effective solution with minimal external components.
These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving a power MOSFET.
Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle−by−cycle current limiting, programmable output deadtime, and a latch for single pulse metering.
These devices are available in an 8−pin dual−in−line and surface mount (SOIC−8) plastic package as well as the 14−pin plastic surface mount (SOIC−14). The SOIC−14 package has separate power and ground pins for the totem pole output stage.
The UCX842B has UVLO thresholds of 16 V (on) and 10 V (off), ideally suited for off−line converters. The UCX843B is tailored for lower voltag
Features
• Trimmed Oscillator for Precise Frequency Control
• Oscillator Frequency Guaranteed at 250 kHz
• Current Mode Operation to 500 kHz
• Automatic Feed Forward Compensation
• Latching PWM for Cycle−By−Cycle Current Limiting
• Internally Trimmed Reference with Undervoltage Lockout
• High Current Totem Pole Output
• Undervoltage Lockout with Hysteresis
• Low Startup and Operating Current
• Pb−Free Packages are Available
| ABSOLUTE MAXIMUM RATINGS(1) |
|
Bias and Driver Voltages VCC, VC 30 V
Power Supply and Zener Current (ICC + IZ) 30 mA
Output Current, Source or Sink IO 1.0 A
Output Energy (Capacitive Load per Cycle) W 5.0 J
Current Sense and Voltage Feedback Inputs Vin − 0.3 to + 5.5 V
Error Amp Output Sink Current IO 10 mA
|
PART OF STOCK
| C.I LM2936Z-5,0 | BSS138LT1G |
| CAP 0805 1UF 25V X7R CL21B105KAFNNNE | CKCA43X7R1H102KT |
| RES 0402 82K 5% RC0402JR-0782KL | RC2512JK-073R6L |
| RC0805JR-0710KL | PBY201209T-102Y-N |
| RC0805JR-071KL | FUSÍVEL POLYFUSE 60R090XU |
| DIODO DF06S | 12061C102MAT 2A |
| INDUTOR. 100UH SLF7045T-101MR50-PF | NANOSMDC012F-2 |
| RES 470R 5% RC0805JR-07470RL | BD9703FP-E2 |
| ACOPLADOR OTICO. MOC3021S-TA1 | CAP CER 6.8 pF 50V 08055A6R8JAT2A |
| DIODO P6KE180A | 08055A470KBT2A CAP CER 47pF 50V- NPO |
| RES 1206 470R 5% RC1206JR-07470RL | 1.5SMC30AT3G |
| C.I HCF4060BEY | BAT54S |
| ACOPLADOR MOC3020M | CAP CER 100KPF/50V ±20% C0805C104M5RACTU |
| DIODO W08M | TRAN NDT456P |
| TRANS TIP127 (ROHS) | 12063C105MAT2A |
| TRIAC BTA24-600B | CAP CER 15PF 50V 10% 06035A150JAT2A |
| RES 1206 0R1 1% RL1206FR-070R1L | 08053A332KAT2A |
| C.I KA7815ETU | CAP CER 33PF/50V 5% C0603C330J1GACTU |
| C.I AT91SAM7S64C-AU | POLYSWITCH 050A 13.2V nanoSMDC050F/13.2-2 |
| C.I LM1117MPX-ADJ | DIO SMCJ30A-E3/57T |
| C.I MAX3232IPWR | C.I ICL7660CBAZ |
| C.I.MT8816AE1 | C1210C106M5PACTU |
| STD4NK60ZT4 | DIO ES2D-E3/52T |
| C.I PIC18F452-I/PT | GP1S094HCZ0F |
| DIODO. BYG20J-E3/TR | RES 330K 1% RC0603FR-07330KL |
| TRANS NDD04N60ZT4G | SMBJ6.5A-E3/52 |
| C.I LM35DZ | BAT54A |
| CAP 4,7UF 10V X5R 10% CL21A475KPFNNNE | BSS138 |
| CAP CL21B105KOFNNNE | BSS123 |
| CAP 0402 100NF 16V X7R CL05B104KO5NNNC | BZX84C18LT1G |
AOZ1021AI Electronic IC Chip NEW AND ORIGINAL STOCK
AOZ1210AI Electronic IC Chip NEW AND ORIGINAL STOCK
TNY274GN NEW AND ORIGINAL STOCK
| Image | Part # | Description | |
|---|---|---|---|
|
|
AOZ1021AI Electronic IC Chip NEW AND ORIGINAL STOCK |
Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 3A 8-SOIC (0.154", 3.90mm Width)
|
|
|
|
AOZ1210AI Electronic IC Chip NEW AND ORIGINAL STOCK |
Buck Switching Regulator IC Positive Adjustable 0.8V 1 Output 2A 8-SOIC (0.154", 3.90mm Width)
|
|
|
|
TNY274GN NEW AND ORIGINAL STOCK |
Converter Offline Flyback Topology 132kHz SMD-8C
|