UC2843AQD8RG4Q1 Texas Instruments Integrated Circuit (Other) In Stock
UC2843AQD8RG4Q1 is a current-mode PWM controller IC by Texas Instruments. It operates with input voltage range of 12V to 25V and supports pulse width modulation control technique. Ideal for switching power supplies, DC-DC converters, and motor drive applications. Available in SOIC-8 package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- UC2843AQD8RG4Q1 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Current-mode control with pulse width modulation for precise regulation and fast transient response
- Wide input voltage range from 12V to 25V (nominal 15V) supporting diverse power supply designs
- Single-function PWM controller in compact R-PDSO-G8 (SOIC-8) package for space-constrained designs
- Automotive-grade (Q1) qualification meeting AEC-Q100 requirements for high-reliability applications
- RoHS-compliant (JESD-609 e4) construction ensuring environmental compliance
Applications
The UC2843AQD8RG4Q1 is widely used in switching power supply designs including flyback, forward, and boost converter topologies for industrial and automotive applications. Its current-mode PWM control makes it suitable for DC-DC converters requiring tight output regulation and fast load transient response. The automotive-grade (Q1) qualification makes it ideal for on-board chargers, ADAS power rails, and other safety-critical vehicle electronics.
Specifications
| YTEOL | 0 |
| Analog IC - Other Type | SWITCHING CONTROLLER |
| Control Mode | CURRENT-MODE |
| Control Technique | PULSE WIDTH MODULATION |
| Input Voltage-Max | 25V |
| Input Voltage-Min | 12V |
| Input Voltage-Nom | 15V |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Functions | 1 |
| Output Current-Max | 1A |
| Output Voltage-Max | 5.05V |
| Output Voltage-Min | 4.95V |
| Output Voltage-Nom | 5V |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | AEC-Q100 |
| Supply Current-Max (Isup) | 17mA |
| Surface Mount | YES |
| Switcher Configuration | PUSH-PULL |
| Switching Frequency-Max | 500kHz |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for UC2843AQD8RG4Q1:
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO14
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8
Switching Controller, Current-mode, 1A, 500kHz Switching Freq-Max, BIPolar, PDSO8
Frequently Asked Questions
What is the input voltage range for the UC2843AQD8RG4Q1?
The UC2843AQD8RG4Q1 supports an input voltage range from 12V minimum to 25V maximum, with a nominal operating voltage of 15V. This wide range makes it suitable for various industrial and automotive power supply designs.
What control mode does the UC2843AQD8RG4Q1 use?
The UC2843AQD8RG4Q1 uses current-mode control with pulse width modulation (PWM) technique. Current-mode control provides inherent cycle-by-cycle current limiting, improved line regulation, and simplified loop compensation compared to voltage-mode controllers.
What package does the UC2843AQD8RG4Q1 come in?
The UC2843AQD8RG4Q1 is available in an 8-pin SOIC package (JESD-30 code R-PDSO-G8). This compact surface-mount package is ideal for space-constrained PCB designs in automotive and industrial applications.
Is the UC2843AQD8RG4Q1 automotive qualified?
Yes, the UC2843AQD8RG4Q1 carries a Q1 automotive qualification suffix, indicating it meets AEC-Q100 reliability standards. This makes it suitable for automotive power management applications including on-board chargers, ECU power rails, and ADAS systems.
What are typical applications for the UC2843AQD8RG4Q1?
The UC2843AQD8RG4Q1 is commonly used in flyback converters, forward converters, boost converters, and other switching power supply topologies. It is well-suited for industrial power supplies, automotive DC-DC converters, motor drive circuits, and battery charging systems requiring reliable current-mode PWM control.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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