TL3844P Electronics Components , Current - Mode Pwm Controllers Digital Ic Circuits
small scale integrated circuits
,integrated components
TL3844P Electronics Components , Current - Mode Pwm Controllers Digital Ic Circuits
TL284x, TL384x CURRENT-MODE PWM CONTROLLERS
►Optimized for Off-Line and dc-to-dc Converters
►Low Start-Up Current (<1 mA)
►Automatic Feed-Forward Compensation
►Pulse-by-Pulse Current Limiting
►Enhanced Load-Response Characteristics
►Undervoltage Lockout With Hysteresis
►Double-Pulse Suppression
►High-Current Totem-Pole Output
►Internally Trimmed Bandgap Reference
►500-kHz Operation
►Error Amplifier With Low Output Resistance
►Designed to Be Interchangeable With UC2842 and UC3842 Series
description/ordering information
The TL284x and TL384x series of control integrated circuits provide the features that are necessary to implement off-line or dc-to-dc fixed-frequency current-mode control schemes, with a minimum number of external components. Some of the internally implemented circuits are an undervoltage lockout (UVLO), featuring a start-up current of less than 1 mA, and a precision reference trimmed for accuracy at the error amplifier input. Other internal circuits include logic to ensure latched operation, a pulse-width modulation (PWM) comparator (that also provides current-limit control), and a totem-pole output stage designed to source or sink high-peak current. The output stage, suitable for driving N-channel MOSFETs, is low when it is in the off state.
Major differences between members of these series are the UVLO thresholds and maximum duty-cycle ranges. Typical UVLO thresholds of 16 V (on) and 10 V (off) on the TLx842 and TLx844 devices make them ideally suited to off-line applications. The corresponding typical thresholds for the TLx843 and TLx845 devices are 8.4 V (on) and 7.6 V (off). The TLx842 and TLx843 devices can operate to duty cycles approaching 100%. A duty-cycle range of 0 to 50% is obtained by the TLx844 and TLx845 by the addition of an internal toggle flip-flop, which blanks the output off every other clock cycle.
The TL284x-series devices are characterized for operation from –40°C to 85°C. The TL384x-series devices are characterized for operation from 0°C to 70°C.
functional block diagram
STOCK LIST
| DSPIC33FJ128GP706-I/PT | 3690 | MICROCHIP | 15+ | QFP |
| DPA423R-TL | 6960 | POWER | 15+ | TO-263 |
| ATMEGA16U2-AU | 300 | ATMEL | 15+ | QFP-32 |
| CD74HC4052M96 | 5875 | TI | 16+ | SOP-16 |
| 74AHC245D | 7500 | 15+ | SOP | |
| IRF3710PBF | 1500 | IR | 15+ | TO-220 |
| 2MBI200N-060 | 3000 | FUJI | 15+ | MODULE |
| 6MBP20JB060-03 | 100 | FUJI | 16+ | MODULE |
| AD9762ARUZ | 2450 | AD | 15+ | TSSOP28 |
| DRV8811PWPR | 3690 | TI | 15+ | HTSSOP |
| ADS1115IDGSR | 2000 | TI | 15+ | MSOP-10 |
| FP6291 | 2200 | FEELING | 15+ | SOT23-6 |
| C3931 | 1380 | TI | 15+ | SOP-8 |
| FAN7382M1X | 1950 | FSC | 15+ | SOP-14 |
| BTA16-600CWR | 2100 | ST | 13+ | TO-220 |
| FSLM2520-2R2J | 3460 | TOKO | 15+ | 2520 |
| 74VHC4040MTCX | 7500 | FAIRCHILD | 15+ | TSSOP-16 |
| 2SA1413-Z-E1 | 3000 | NEC | 16+ | TO-252 |
| AM29LV160DB-120EC | 1600 | AMD | 16+ | TSOP-48 |
| CD74HC123E | 5950 | TI | 16+ | DIP |
| BC546B | 15000 | FSC | 13+ | TO-92 |
| ADM483AR | 2000 | AD | 13+ | SOP |
| 2SA1295+2SC3264 | 3000 | SANKEN | 16+ | MT-220 |
| 1206L075THYR | 9000 | TYCO | 16+ | SMD |
| AT27C1024-45JC | 2300 | ATMEL | 15+ | PLCC |
| AD8510ARZ | 2450 | AD | 16+ | SOP |
| A3967SLBTR-T | 2230 | ALLEGRO | 16+ | SOP-24 |
| 2SA1413 | 3000 | NEC | 15+ | TO-252 |
| BZV55-C20 | 9000 | 16+ | LL34 | |
| DL4732A | 8010 | PANJIT | 14+ | LL41 |
| 1.5KE22CA | 9000 | VISHAY | 15+ | DO-201A |
| A6818EEPTR-T | 2230 | ALLEGRO | 16+ | PLCC |
| ISD2590P | 120 | ISD | 16+ | DIP-28 |
| HCPL-0630 | 3460 | AVAGO | 15+ | SOP-8 |
| DL4730A | 8040 | PANJIT | 13+ | LL41 |
| BYV26B | 9000 | PHI | 16+ | SOD-57 |
| HD01-T | 1520 | DIODES | 15+ | SOP |
| ADSP-2188NBST-320 | 2000 | AD | 13+ | QFP-100 |
| 2SC1969 | 3000 | MIT | 16+ | TO-220 |
| 74HC154D | 7500 | 16+ | SOP-24 | |
| 6N136 | 5000 | FSC | 15+ | DIP-8 |
| ASSR-V622-302E | 1600 | AVAGO | 15+ | SOP |
| BU9543KV-E2 | 2100 | ROHM | 16+ | TQFP-64 |
| AD580JH | 2450 | AD | 15+ | CAN |
| ADXRS620BBGZ | 200 | AD | 16+ | BGA |
| HD7445P | 1520 | HIT | 13+ | DIP |
W25N01GVZEIG SLC Nand Flash Memory IC 3V 1G BIT Winbond TW SPI
PF48F4400P0VBQEK NEW AND ORIGINAL STOCK
DSPIC30F3011-30I/PT Flash Memory IC NEW AND ORIGINAL STOCK
IR2110PBF NEW AND ORIGINAL STOCK
S25FL032P0XMFI010 SOP8 104MHz Flash Memory IC Chip
W25Q80DVSNIG Serial Flash Chip 3V 8M BIT Dual Quad Spi Memory Integrated Circuit
MOS Tube Field Effect Single-Chip Drive PWM Controlador Module IRF520
MAX485, RS485 Module TTL To RS-485 Module TTL To 485
SKY65336-11 NEW AND ORIGINAL STOCK
| Image | Part # | Description | |
|---|---|---|---|
|
|
W25N01GVZEIG SLC Nand Flash Memory IC 3V 1G BIT Winbond TW SPI |
FLASH - NAND (SLC) Memory IC 1Gbit SPI - Quad I/O 104 MHz 7 ns 8-WSON (8x6)
|
|
|
|
PF48F4400P0VBQEK NEW AND ORIGINAL STOCK |
FLASH - NOR (MLC) Memory IC 512Mbit CFI 52 MHz 110 ns 64-LBGA (11x13)
|
|
|
|
DSPIC30F3011-30I/PT Flash Memory IC NEW AND ORIGINAL STOCK |
dsPIC dsPIC™ 30F Microcontroller IC 16-Bit 30 MIPs 24KB (8K x 24) FLASH 44-TQFP (10x10)
|
|
|
|
IR2110PBF NEW AND ORIGINAL STOCK |
Half-Bridge Gate Driver IC Non-Inverting 14-DIP
|
|
|
|
S25FL032P0XMFI010 SOP8 104MHz Flash Memory IC Chip |
FLASH - NOR Memory IC 32Mbit SPI - Quad I/O 104 MHz 8-SOIC
|
|
|
|
W25Q80DVSNIG Serial Flash Chip 3V 8M BIT Dual Quad Spi Memory Integrated Circuit |
FLASH - NOR Memory IC 8Mbit SPI - Quad I/O 104 MHz 8-SOIC
|
|
|
|
MOS Tube Field Effect Single-Chip Drive PWM Controlador Module IRF520 |
N-Channel 100 V 9.2A (Tc) 60W (Tc) Through Hole TO-220AB
|
|
|
|
MAX485, RS485 Module TTL To RS-485 Module TTL To 485 |
1/1 Transceiver Half RS422, RS485 8-uMAX/uSOP
|
|
|
|
SKY65336-11 NEW AND ORIGINAL STOCK |
RF Front End 2.4GHz ISM 28-MCM (8x8)
|