UC2845A Series
30V, 1A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 50% duty cycle, 40°C to 85°C
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
30V, 1A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 50% duty cycle, 40°C to 85°C
| Part | Voltage - Input [Min] | Voltage - Input [Max] | Voltage - Supply [Max] | Voltage - Supply [Min] | Mounting Type | Operating Temperature [Max] | Operating Temperature [Min] | Applications | Current - Supply | Package / Case | Package / Case | Package / Case | Package / Case | Supplier Device Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments UC2845AD | -3 V | 6.3 V | 30 VDC | 7.6 V | Surface Mount | 85 °C | -40 °C | PWM Controller | 11 mA | 3.9 mm | 0.154 in | 14-SOIC | ||
Texas Instruments UC2845AD8 | -3 V | 6.3 V | 30 VDC | 7.6 V | Surface Mount | 85 °C | -40 °C | PWM Controller | 11 mA | 8-SOIC | 3.9 mm | 8-SOIC | ||
Texas Instruments UC2845ADW | -3 V | 6.3 V | 30 VDC | 7.6 V | Surface Mount | 85 °C | -40 °C | PWM Controller | 11 mA | 16-SOIC | 16-SOIC | |||
Texas Instruments UC2845ADTR | -3 V | 6.3 V | 30 VDC | 7.6 V | Surface Mount | 85 °C | -40 °C | PWM Controller | 11 mA | 3.9 mm | 0.154 in | 14-SOIC |
Key Features
• Optimized for Off-Line and DC-DC ConvertersLow Start-Up Current (< 0.5mA)Trimmed Oscillator Discharge CurrentAutomatic Feedforward CompensationPulse-by-Pulse Current LimitingEnhanced Load Response CharacteristicsUndervoltage Lockout With HysteresisDouble Pulse SuppressionHigh-Current Totem Pole OutputInternally-Trimmed Bandgap ReferenceUp to 500kHz OperationCreate a Custom Design Using the UCx84xA With theWEBENCH Power DesignerOptimized for Off-Line and DC-DC ConvertersLow Start-Up Current (< 0.5mA)Trimmed Oscillator Discharge CurrentAutomatic Feedforward CompensationPulse-by-Pulse Current LimitingEnhanced Load Response CharacteristicsUndervoltage Lockout With HysteresisDouble Pulse SuppressionHigh-Current Totem Pole OutputInternally-Trimmed Bandgap ReferenceUp to 500kHz OperationCreate a Custom Design Using the UCx84xA With theWEBENCH Power Designer
Description
AI
The UCx84xA family of control devices is a pin-for-pin compatible improved version of the UCx84x family. Providing the necessary features to control current-mode or switched-mode power supplies, this family of devices has many improved features: startup current is less than 0.5mA, oscillator discharge is trimmed to 8.3mA, and during UVLO, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.
The UCx84xA family of control devices is a pin-for-pin compatible improved version of the UCx84x family. Providing the necessary features to control current-mode or switched-mode power supplies, this family of devices has many improved features: startup current is less than 0.5mA, oscillator discharge is trimmed to 8.3mA, and during UVLO, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.