UC2845AQD8R
ActiveAUTOMOTIVE SINGLE ENDED 500KHZ CURRENT MODE PWM CONTROLLER WITH 8.5V/7.9V UVLO 50% DUTY CYCLE
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UC2845AQD8R
ActiveAUTOMOTIVE SINGLE ENDED 500KHZ CURRENT MODE PWM CONTROLLER WITH 8.5V/7.9V UVLO 50% DUTY CYCLE
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Technical Specifications
Parameters and characteristics commom to parts in this series
| Specification | UC2845AQD8R | UC2845 Series |
|---|---|---|
| Applications | PWM Controller | PWM Controller |
| Clock Sync | - | False |
| Control Features | - | Frequency Control |
| Current - Supply | 11 mA | 11 mA |
| Duty Cycle (Max) | - | 48 % |
| Function | - | Step-Down, Step-Up/Step-Down, Step-Up |
| Mounting Type | Surface Mount | Surface Mount, Through Hole |
| Number of Outputs | - | 1 |
| Operating Temperature [Max] | 125 °C | 85 - 125 °C |
| Operating Temperature [Min] | -40 °C | -40 °C |
| Output Configuration | - | Positive, Isolation Capable |
| Output Phases | - | 1 |
| Output Type | - | Transistor Driver |
| Package / Case | 3.9 mm | 0.3 - 3.9 mm |
| Package / Case | 8-SOIC | 8-SOIC, 16-SOIC, 14-SOIC, 8-DIP |
| Package / Case | - | 3.9 mm |
| Package / Case | - | 0.154 - 7.62 in |
| Supplier Device Package | 8-SOIC | 8-SOIC, 16-SOIC, 8-PDIP |
| Synchronous Rectifier | - | False |
| Topology | - | Buck, Forward, Boost, Flyback |
| Voltage - Input [Max] | 6.3 V | 6.3 V |
| Voltage - Input [Min] | -3 V | -3 V |
| Voltage - Supply (Vcc/Vdd) | - | 12 V |
| Voltage - Supply (Vcc/Vdd) | - | 28 V |
| Voltage - Supply [Max] | 30 VDC | 28 - 30 V |
| Voltage - Supply [Min] | 7.9 V | 7.6 - 12 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Component Electronics, Inc | N/A | 1 | $ 2.31 | |
| 100 | $ 1.73 | |||
| 1000 | $ 1.50 | |||
| Digikey | Cut Tape (CT) | 1 | $ 1.65 | |
| 10 | $ 1.47 | |||
| 25 | $ 1.40 | |||
| 100 | $ 1.15 | |||
| 250 | $ 1.07 | |||
| 500 | $ 0.95 | |||
| 1000 | $ 0.75 | |||
| Digi-Reel® | 1 | $ 1.65 | ||
| 10 | $ 1.47 | |||
| 25 | $ 1.40 | |||
| 100 | $ 1.15 | |||
| 250 | $ 1.07 | |||
| 500 | $ 0.95 | |||
| 1000 | $ 0.75 | |||
| Tape & Reel (TR) | 2500 | $ 0.70 | ||
| 5000 | $ 0.66 | |||
| 12500 | $ 0.64 | |||
| Texas Instruments | LARGE T&R | 1 | $ 1.22 | |
| 100 | $ 0.94 | |||
| 250 | $ 0.69 | |||
| 1000 | $ 0.49 | |||
UC2845 Series
IC REG CTRLR MULT TOPOLOGY 8SOIC
| Part | Operating Temperature [Max] | Operating Temperature [Min] | Package / Case | Package / Case | Current - Supply | Supplier Device Package | Voltage - Input [Min] | Voltage - Input [Max] | Voltage - Supply [Min] | Voltage - Supply [Max] | Mounting Type | Applications | Package / Case | Package / Case | Function | Control Features | Voltage - Supply (Vcc/Vdd) [Min] | Voltage - Supply (Vcc/Vdd) [Max] | Output Configuration | Synchronous Rectifier | Clock Sync | Number of Outputs | Topology | Duty Cycle (Max) [Max] | Output Phases | Output Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments UC2845D8G4 | 85 °C | -40 °C | 3.9 mm | 8-SOIC | 11 mA | 8-SOIC | -3 V | 6.3 V | 12 V | 28 V | Surface Mount | PWM Controller | ||||||||||||||
Texas Instruments UC2845ADW | 85 °C | -40 °C | 16-SOIC | 11 mA | 16-SOIC | -3 V | 6.3 V | 7.6 V | 30 VDC | Surface Mount | PWM Controller | |||||||||||||||
Texas Instruments UC2845D | 85 °C | -40 °C | 14-SOIC | 11 mA | -3 V | 6.3 V | 12 V | 28 V | Surface Mount | PWM Controller | 3.9 mm | 0.154 in | ||||||||||||||
Texas Instruments UC2845ADTR | 85 °C | -40 °C | 14-SOIC | 11 mA | -3 V | 6.3 V | 7.6 V | 30 VDC | Surface Mount | PWM Controller | 3.9 mm | 0.154 in | ||||||||||||||
Texas Instruments UC2845AQD8R | 125 °C | -40 °C | 3.9 mm | 8-SOIC | 11 mA | 8-SOIC | -3 V | 6.3 V | 7.9 V | 30 VDC | Surface Mount | PWM Controller | ||||||||||||||
Texas Instruments UC2845AQD | 125 °C | -40 °C | 14-SOIC | 11 mA | -3 V | 6.3 V | 7.9 V | 30 VDC | Surface Mount | PWM Controller | 3.9 mm | 0.154 in | ||||||||||||||
Texas Instruments UC2845AD8TRG4 | 85 °C | -40 °C | 3.9 mm | 8-SOIC | 11 mA | 8-SOIC | -3 V | 6.3 V | 7.6 V | 30 VDC | Surface Mount | PWM Controller | ||||||||||||||
Texas Instruments UC2845DTRG4 | 85 °C | -40 °C | 14-SOIC | 11 mA | -3 V | 6.3 V | 12 V | 28 V | Surface Mount | PWM Controller | 3.9 mm | 0.154 in | ||||||||||||||
Texas Instruments UC2845D8TR | 85 °C | -40 °C | 3.9 mm | 8-SOIC | 11 mA | 8-SOIC | -3 V | 6.3 V | 12 V | 28 V | Surface Mount | PWM Controller | ||||||||||||||
Texas Instruments UC2845AQDR | 125 °C | -40 °C | 14-SOIC | 11 mA | -3 V | 6.3 V | 7.9 V | 30 VDC | Surface Mount | PWM Controller | 3.9 mm | 0.154 in | ||||||||||||||
Texas Instruments UC2845P | 85 °C | -40 °C | 0.3 in | 8-DIP | 8-PDIP | Through Hole | 7.62 mm | Step-Down, Step-Up, Step-Up/Step-Down | Frequency Control | 12 V | 28 V | Isolation Capable, Positive | 1 | Boost, Buck, Flyback, Forward | 48 % | 1 | Transistor Driver | |||||||||
Texas Instruments UC2845AD8 | 85 °C | -40 °C | 3.9 mm | 8-SOIC | 11 mA | 8-SOIC | -3 V | 6.3 V | 7.6 V | 30 VDC | Surface Mount | PWM Controller | ||||||||||||||
Texas Instruments UC2845AD8G4 | 85 °C | -40 °C | 3.9 mm | 8-SOIC | 11 mA | 8-SOIC | -3 V | 6.3 V | 7.6 V | 30 VDC | Surface Mount | PWM Controller | ||||||||||||||
Texas Instruments UC2845AD | 85 °C | -40 °C | 14-SOIC | 11 mA | -3 V | 6.3 V | 7.6 V | 30 VDC | Surface Mount | PWM Controller | 3.9 mm | 0.154 in | ||||||||||||||
Texas Instruments UC2845D8TRG4 | 85 °C | -40 °C | 3.9 mm | 8-SOIC | 11 mA | 8-SOIC | -3 V | 6.3 V | 12 V | 28 V | Surface Mount | PWM Controller | ||||||||||||||
Texas Instruments UC2845ANG4 | 85 °C | -40 °C | 0.3 in | 8-DIP | 11 mA | 8-PDIP | -3 V | 6.3 V | 7.6 V | 30 VDC | Through Hole | PWM Controller | 7.62 mm | |||||||||||||
Texas Instruments UC2845N | 85 °C | -40 °C | 0.3 in | 8-DIP | 11 mA | 8-PDIP | -3 V | 6.3 V | 12 V | 28 V | Through Hole | PWM Controller | 7.62 mm | |||||||||||||
Texas Instruments UC2845D8 | 85 °C | -40 °C | 3.9 mm | 8-SOIC | 11 mA | 8-SOIC | -3 V | 6.3 V | 12 V | 28 V | Surface Mount | PWM Controller | ||||||||||||||
Texas Instruments UC2845NG4 | 85 °C | -40 °C | 0.3 in | 8-DIP | 11 mA | 8-PDIP | -3 V | 6.3 V | 12 V | 28 V | Through Hole | PWM Controller | 7.62 mm |
Description
General part information
UC2845 Series
The UC2842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC2842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up current is designed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.
The difference between members of this family are shown in the table below.
The UC2842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC2842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up current is designed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.
Documents
Technical documentation and resources