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UC3854BN 2.54mm PMIC UC3854 16 Pin 200kHz 18V 16-DIP (0.300, 7.62mm) UC3854BN Power Factor Correction - PFC Enhanced High Power Factor Preregulator
- Manufacturer: Texas Instruments
- NO: 815-UC3854BN
- Package: 16-DIP (0.300, 7.62mm)
- Datasheet:
- Stock: 1025
- Description: UC3854BN 2.54mm PMIC UC3854 16 Pin 200kHz 18V 16-DIP (0.300, 7.62mm) UC3854BN Power Factor Correction - PFC Enhanced High Power Factor Preregulator(Kg)
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| Parameters | |
|---|---|
| Surface Mount | NO |
| Terminal Pitch | 2.54mm |
| Subcategory | Switching Regulator or Controllers |
| Supply Voltage-Max (Vsup) | 20V |
| Max Power Dissipation | 1W |
| Output Voltage | 12.8V |
| Number of Outputs | 1 |
| Max Output Current | 1A |
| Input Voltage-Nom | 18V |
| Analog IC - Other Type | POWER FACTOR CONTROLLER |
| Power Dissipation | 1W |
| Max Output Voltage | 12.8V |
| Mode | Average Current |
| Voltage - Supply | 10V~20V |
| Control Technique | PULSE WIDTH MODULATION |
| Switcher Configuration | BOOST |
| Current - Startup | 250μA |
| Factory Lead Time | 6 Weeks |
| Lifecycle Status | ACTIVE (Last Updated: 2 days ago) |
| Packaging | Tube |
| Pbfree Code | yes |
| Part Status | Active |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Number of Terminations | 16 |
| Termination | Through Hole |
| ECCN Code | EAR99 |
| Length | 19.3mm |
| RoHS Status | ROHS3 Compliant |
| Lead Free | Lead Free |
| Radiation Hardening | No |
| Number of Pins | 16 |
| Package / Case | 16-DIP (0.300, 7.62mm) |
| REACH SVHC | No SVHC |
| Frequency | 200kHz |
| Height | 5.08mm |
| Width | 6.35mm |
| Thickness | 3.9mm |
| Mounting Type | Through Hole |
| Weight | 1.053808g |
| Operating Temperature | 0°C~70°C |
| Technology | BIPOLAR |
| Operating Supply Current | 12mA |
| Max Supply Current | 18mA |
| Number of Functions | 1 |
| Nominal Input Voltage | 11V |
| Max Input Voltage | 11V |
| JESD-609 Code | e4 |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Position | DUAL |
| Supply Voltage | 18V |
| Base Part Number | UC3854 |
| Pin Count | 16 |
UC3854BN Overview
The UC3854A/B products are pin compatibleenhanced versions of the UC3854. Like the UC3854, these products provide all of the functions necessary for active power factor corrected preregulators. The controller achieves near unity power factor by shaping the ac input line current waveform to correspond to the ac input line voltage. To do this the UC3854A/B uses average current mode control. Average current mode control maintains stable, low distortion sinusoidal line current without the need for slope compensation, unlike peak current mode control. A 1%, 7.5-V reference, fixed frequency oscillator, PWM, voltage amplifierwith soft-start, line voltage feedforward (VRMS squarer), input supply voltage clamp, and over current comparator round out the lilst of feataures. Available in the 16-pin N (PDIP), DW (SOIC Wide), and J (CDIP) and 20-pin Q (PLCC) package. See Ordering Information table for availability by temperature range.The UC3854A/B products improve upon the UC3854 by offering a wide bandwidth, low offset current amplifier, a faster responding and improved accuracy enable comparator, a VREF GOOD comparator, UVLO threshold options (16 V/10 V for offline, 10.5 V/10 V for startup from an auxiliary 12-V regulator), lower startup supply current, and an enhanced multiply/divide circuit. New features like the amplifier output clamps, improved amplifier current sinking capability, and low offset VAC pin reduce the external component count while improving performance. Improved common mode input range of the multiplier output/current amplifier input allow the designer greater flexibility in choosing amethod for current sensing. Unlike its predecessor, RSET controls only oscillator charging current and has no effect on clamping the maximum multiplier output current. This current is now clamped to a maximum of 2 × IAC at all times which simplifies the design process and provides foldback power limiting during brownout and extreme low line conditions.
The UC3854A/B products are pin compatibleenhanced versions of the UC3854. Like the UC3854, these products provide all of the functions necessary for active power factor corrected preregulators. The controller achieves near unity power factor by shaping the ac input line current waveform to correspond to the ac input line voltage. To do this the UC3854A/B uses average current mode control. Average current mode control maintains stable, low distortion sinusoidal line current without the need for slope compensation, unlike peak current mode control. A 1%, 7.5-V reference, fixed frequency oscillator, PWM, voltage amplifierwith soft-start, line voltage feedforward (VRMS squarer), input supply voltage clamp, and over current comparator round out the lilst of feataures. Available in the 16-pin N (PDIP), DW (SOIC Wide), and J (CDIP) and 20-pin Q (PLCC) package. See Ordering Information table for availability by temperature range.The UC3854A/B products improve upon the UC3854 by offering a wide bandwidth, low offset current amplifier, a faster responding and improved accuracy enable comparator, a VREF GOOD comparator, UVLO threshold options (16 V/10 V for offline, 10.5 V/10 V for startup from an auxiliary 12-V regulator), lower startup supply current, and an enhanced multiply/divide circuit. New features like the amplifier output clamps, improved amplifier current sinking capability, and low offset VAC pin reduce the external component count while improving performance. Improved common mode input range of the multiplier output/current amplifier input allow the designer greater flexibility in choosing amethod for current sensing. Unlike its predecessor, RSET controls only oscillator charging current and has no effect on clamping the maximum multiplier output current. This current is now clamped to a maximum of 2 × IAC at all times which simplifies the design process and provides foldback power limiting during brownout and extreme low line conditions.
UC3854BN Features
• Controls Boost PWM to Near-Unity Power Factor• Limits Line Current Distortion To AC Offset (Eliminates External Resistor), 0 V to 5 V Multout Common-Mode Range
• VREF GOOD Comparator
• Faster and Improved Accuracy ENABLE Comparator
• UVLO Options (16 V/10 V or 10.5 V/10 V)
• 300-µA Start-Up Supply Current
UC3854BN Applications
There are a lot of Texas Instruments UC3854BN PFC PMICs applications.
- Engine management
- Bypass circuit
- Smart buildings
- Signal chain
- LED lighting
- Automotive applications
- Digital TV
- Portable medical devices
- Position detection
- Temperature monitoring
