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UC2846DW
The UC2846DW functions as a current mode PWM controller
UC2846DW
The UC2846DW functions as a current mode PWM controller
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製造商零件號 # : UC2846DW
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包裝/封裝: SOIC-16
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製造商: Texas Instruments
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產品分類 : DC DC Switching Controllers
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UC2846DW 數據表
價格 (USD)
| 數量 | 單價 | 總價 |
|---|---|---|
| 1 | $4.190 | $4.19 |
| 10 | $3.691 | $36.91 |
| 40 | $3.037 | $121.48 |
| 80 | $2.737 | $218.96 |
| 400 | $2.598 | $1,039.20 |
| 800 | $2.536 | $2,028.80 |
這些價格會受到市場波動的影響，需要提交報價才能取得最新價格。
詳細說明
The UC2846DW, a current mode PWM controller from the UC1846/7 family of control devices, is designed to meet the requirements of fixed-frequency, current-mode control schemes with a minimal external parts count. With its low outputs in the OFF state and a range of functionalities including automatic feedforward compensation and programmable pulse-by-pulse current limiting, the UC2846DW is an ideal solution for power system applications. Its automatic symmetry correction in push-pull configuration and enhanced load response characteristics enhance its reliability and efficiency, while its parallel operation capability makes it suitable for modular power systems. The UC2846DW also features a differential current sense amplifier with a wide common mode range, double-pulse suppression, and 500-kHz operation, ensuring precise and stable performance in power management. Furthermore, the device offers undervoltage lockout, soft-start capability, and a shutdown terminal for added control and flexibility, making it a comprehensive and reliable solution for current-mode PWM control
主要特徵
- The UC2846DW is a versatile PWM controller
- Supports switch-mode power supplies and converters
- Programmable dead time for precise control
- High-speed error amplifier for fast response
- Overvoltage protection for safe operation
- Multimode oscillator for flexible timing
規格
以下是所選零件的基本參數，涉及零件的特性及其所屬類別。
| Pbfree Code | Yes | Rohs Code | Yes |
| Part Life Cycle Code | Active | Part Package Code | SOIC |
| Pin Count ! | 16 | Reach Compliance Code | compliant |
| ECCN Code | EAR99 | HTS Code ! | 8542.39.00.01 |
| Analog IC - Other Type | SWITCHING CONTROLLER | Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION | Input Voltage-Max | 40 V |
| Input Voltage-Min | 7.25 V | Input Voltage-Nom | 15 V |
| JESD-30 Code | R-PDSO-G16 | JESD-609 Code | e4 |
| Length | 10.3 mm | Moisture Sensitivity Level | 2 |
| Number of Functions | 1 | Number of Terminals | 16 |
| Operating Temperature-Max | 85 °C | Operating Temperature-Min | -40 °C |
| Output Current-Max | 0.5 A | Output Voltage-Max | 5.15 V |
| Output Voltage-Min | 5.05 V | Output Voltage-Nom | 5.1 V |
| Package Body Material | PLASTIC/EPOXY | Package Code | SOP |
| Package Equivalence Code | SOP16,.4 | Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE | Peak Reflow Temperature (Cel) | 260 |
| Qualification Status ! | Not Qualified | Seated Height-Max | 2.65 mm |
| Supply Current-Max (Isup) | 21 mA | Supply Voltage-Max (Vsup) | 40 V |
| Supply Voltage-Min (Vsup) | 7.7 V | Surface Mount ! | YES |
| Switcher Configuration | BUCK-BOOST | Switching Frequency-Max | 500 kHz |
| Technology | BICMOS | Temperature Grade ! | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD | Terminal Form ! | GULL WING |
| Terminal Pitch ! | 1.27 mm | Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 | Width | 7.5 mm |
Specification Comparison
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
What is UC2846DW?
The UC2846DW is a high-speed, low-power BiCMOS current mode PWM (Pulse Width Modulation) controller designed by Texas Instruments. It is suitable for power supply applications that require high efficiency and precise voltage regulation, such as DC-DC converters, battery chargers, and LED drivers.
How Does UC2846DW Work?
The UC2846DW operates by providing control signals to regulate the output voltage of a power supply through PWM modulation. It incorporates current mode control to achieve fast response to load changes and inherent overcurrent protection. The controller offers adjustable frequency and duty cycle settings for flexible power supply design.
How Many Pins does UC2846DW have and What are the Functions of the Pinout Configuration?
The UC2846DW is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- VI+: Positive input voltage pin.
- VI-: Negative input voltage pin.
- VREF: Reference voltage pin.
- COMP: Error amplifier output pin.
- RT/CT: Oscillator timing component pin.
- SD: Shutdown pin.
- CS: Current sense input pin.
- OUT: Output pin.
What are the Pros and Cons of UC2846DW?
Pros:
- High-Speed Operation: Offers fast response time for dynamic power supply control.
- Low Power Consumption: Operates with low power requirements, improving energy efficiency.
- Current Mode Control: Provides inherent overcurrent protection and improved transient response.
- Adjustable Parameters: Allows for customizable frequency and duty cycle settings.
- Integrated Features: Includes error amplifiers and shutdown capability for enhanced functionality.
Cons:
- Complexity: Requires careful design considerations for optimal performance.
- External Components: May need external components for specific application requirements.
- Thermal Considerations: Heat dissipation and thermal management may be important due to high-speed operation.
Are There Any Equivalents/Alternatives to UC2846DW for Recommendation?
- The SG3524 from STMicroelectronics is an equivalent PWM controller with similar features.
- Alternatives to the UC2846DW include the TL494 from Texas Instruments and the IR2110 from Infineon Technologies.
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