TI UC3842D8TR
| Manufacturer | |
| MPN | UC3842D8TR |
| LCSC Part # | C2658053 |
| Packaging | SOIC-8 |
| Customer # | |
| Key Attributes | 1A 47kHz~57kHz SOIC-8 Power Supply Controllers, Monitors RoHS |
| Datasheet |  TI UC3842D8TR |
Products Specifications
Show similar products (0) >| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Power Supply Controllers, Monitors | |
| Manufacturer | TI | |
| Packaging | SOIC-8 | |
| Output Current | 1A | |
| Frequency - Switching | 47kHz~57kHz | |
| Features | Slope compensation;Under-voltage lockout;Over Current Protection;Over Voltage Protection;Under Voltage Protection | |
| Duty Cycle(Max) | 97% | |
| Operating Temperature | 0℃~+70℃ | |
| Working Mode | PWM Modulation | |
| Feedback System | Secondary-Side Feedback | |
| Operating Voltage | 12V~28V | |
| Topology | Flyback |
Additional Information
| Type | Details |
|---|---|
| Minimum | 1 |
| Multiple | 1 |
| Standard Packaging | 2500 |
| Sales Unit | Piece |
| EDA Models | EasyEDA Model |
Introduction
The UCx84x series control ICs provide the features necessary to implement off-line or DC-DC fixed-frequency current-mode control schemes with a minimum number of external components. Internally implemented circuits include undervoltage lockout (UVLO) — characterized by a startup current of less than 1mA — and a precision reference for trimming accuracy at the error amplifier. Additional internal circuitry includes logic for latched operation, a PWM comparator for current-limit control, and a totem-pole output stage designed to source or sink high peak currents. When in the off state, the output stage — suitable for driving N-channel MOSFETs — is held low.
The UCx84x series offers a variety of package options, temperature range options, maximum duty cycle selections, turn-on and turn-off thresholds, and hysteresis range selections. Devices with higher turn-on or turn-off hysteresis are ideal for off-line power supplies, while devices with a narrower hysteresis range are suited for DC-DC applications. The UC184x devices are specified for an operating temperature range of -55°C to 125°C, the UC284x series is specified for -40°C to 85°C, and the UC384x series is specified for 0°C to 70°C.
Features
- Optimized for off-line and DC-DC converters
- Low startup current (< 1mA)
- Automatic feedforward 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
- Operating frequency up to 500kHz
- Error amplifier with low output impedance
Applications
- Switching regulator with arbitrary polarity
- Transformer-coupled DC-DC converter
| Qty | Unit Price | Total Amount |
|---|---|---|
| 1+ | $ 1.5955 | $ 1.60 |
| 10+ | $ 1.3402 | $ 13.40 |
| 30+ | $ 1.1808 | $ 35.42 |
| 100+ | $ 1.0183 | $ 101.83 |
| 500+ | $ 0.944 | $ 472.00 |
| 1,000+ | $ 0.9131 | $ 913.10 |
Standard Packaging2500/Full Reel | ||
Products Specifications
Show similar products (0) >| Type | Description | |
|---|---|---|
| Category | Integrated Circuits (ICs)/Power Management (PMIC)/Power Supply Controllers, Monitors | |
| Manufacturer | TI | |
| Packaging | SOIC-8 | |
| Output Current | 1A | |
| Frequency - Switching | 47kHz~57kHz | |
| Features | Slope compensation;Under-voltage lockout;Over Current Protection;Over Voltage Protection;Under Voltage Protection | |
| Duty Cycle(Max) | 97% | |
| Operating Temperature | 0℃~+70℃ | |
| Working Mode | PWM Modulation | |
| Feedback System | Secondary-Side Feedback | |
| Operating Voltage | 12V~28V | |
| Topology | Flyback |
Additional Information
| Type | Details |
|---|---|
| Minimum | 1 |
| Multiple | 1 |
| Standard Packaging | 2500 |
| Sales Unit | Piece |
| EDA Models | EasyEDA Model |
Introduction
The UCx84x series control ICs provide the features necessary to implement off-line or DC-DC fixed-frequency current-mode control schemes with a minimum number of external components. Internally implemented circuits include undervoltage lockout (UVLO) — characterized by a startup current of less than 1mA — and a precision reference for trimming accuracy at the error amplifier. Additional internal circuitry includes logic for latched operation, a PWM comparator for current-limit control, and a totem-pole output stage designed to source or sink high peak currents. When in the off state, the output stage — suitable for driving N-channel MOSFETs — is held low.
The UCx84x series offers a variety of package options, temperature range options, maximum duty cycle selections, turn-on and turn-off thresholds, and hysteresis range selections. Devices with higher turn-on or turn-off hysteresis are ideal for off-line power supplies, while devices with a narrower hysteresis range are suited for DC-DC applications. The UC184x devices are specified for an operating temperature range of -55°C to 125°C, the UC284x series is specified for -40°C to 85°C, and the UC384x series is specified for 0°C to 70°C.
Features
- Optimized for off-line and DC-DC converters
- Low startup current (< 1mA)
- Automatic feedforward 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
- Operating frequency up to 500kHz
- Error amplifier with low output impedance
Applications
- Switching regulator with arbitrary polarity
- Transformer-coupled DC-DC converter
Compliance & Export Codes
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |
| Type | Details |
|---|---|
| RoHS | |
| ECCN | EAR99 |
| CNHTS | 8542399000 |
| USHTS | 8542390001 |
| TARIC | 8542399000 |
| Type | Details |
|---|---|
| CAHTS | 8542390000 |
| BRHTS | 85423999 |
| INHTS | 85423900 |
| MXHTS | 8542.39.99 |