Packaging information
Package | Pins CDIP (JG) | 8 |
Operating temperature range (°C) -55 to 125 |
Package qty | Carrier 50 | TUBE |
Features for the UC1845A-SP
- QML Class V (QMLV) Qualified, SMD 5962-86704
- 5962P8670411Vxx:
(1)
- Radiation Hardness Assurance
(RHA) up to
30-krad(Si) Total Ionizing Dose (TID) - Passes Functional and Specified Post-Radiation Parametric Limits at 45 krad at LDR (10 mrad(Si)/s) per 1.5× Over Test as Defined in MIL-STD-883 Test Method 1019.9 Paragraph 3.13.3.b
- Exhibits Low Dose Rate Sensitivity (2) but Remains Within the Pre-Radiation Electrical Limits at 30-krad Total Dose Level, as Allowed by MIL-STD-883, TM1019
- Radiation Hardness Assurance
(RHA) up to
- Optimized for DC-to-DC Converter Applications
- Low Start-Up Current (< 0.5 mA)
- Trimmed Oscillator Discharge Current
- Automatic Feed Forward Compensation
- Pulse-by-Pulse Current Limiting
- Enhanced Load Response Characteristics
- Undervoltage Lockout (UVLO) With Hysteresis
- Double-Pulse Suppression
- High-Current Totem-Pole Output
- Internally-Trimmed Bandgap Reference
- 500-kHz Operation
- Low RO Error Amplifier
- Qualified Over the Military Temperature Range (–55°C to 125°C)
(1)Improved TID radiation performance only applies to RHA device type 11.
(2)The affected parameter Reference Output Voltage, VREF Radiation Drift Curve (see VREF Radiation Drift Curve).
Description for the UC1845A-SP
The UC1845A-SP control IC is a radiation hardened pin-for-pin compatible version of the UC184x family. It is primarily suited for Satellites and other harsh environment applications. Providing the necessary characteristics to control current-mode switched-mode power supplies, this device has improved features. Start-up current is specified to be less than 0.5 mA and oscillator discharge is trimmed to 8.3 mA. During UVLO, the output stage can sink at least 10 mA at less than 1.2 V for VCC over 5 V.
The Device Comparison Table shows the difference between members of this family. Reference the individual product data sheets for ordering the radiation-improved version if available.