Texas Instruments UC1825B-SP
The UC1825B-SP PWM control device is optimized for high-frequency switched mode power supply applications. This controller is designed for use in either current-mode or voltage mode systems with the capability for input voltage feed-forward. The logic is fully latched to provide jitter-free operation and prohibit multiple pulses at an output.| Part No. | UC1825B-SP |
|---|---|
| Datasheet | UC1825B-SP Download |
| Manufacturer |  Texas Instruments |
| Description | Radiation Hardened High-Speed PWM Controller |
| Buy | Stock & Price |
FEATURES
● QML-V qualified, SMD 5962-8768106● 5962R8768106VYC: – Radiation hardness assurance (RHA) up to 100-krad(Si) total ionizing dose (TID) 1
● Compatible with voltage- or current-mode topologies
● Practical operation switching frequencies to 1 MHz
● 50-ns propagation delay-to-output
● High-current dual totem pole outputs (2-A peak)
● Wide bandwidth error amplifier
● Fully latched logic with double-pulse suppression
● Pulse-by-pulse current limiting
● Soft start/maximum duty-cycle control
● Undervoltage lockout with hysteresis
● Low start-up current (1.1 mA) 2
APPLICATIONS
● Radiation-hardened DC-DC converters● Satellite buses and payloads
● Communications payload
● Optical imaging payload
● Radar imaging payload
● Space launch vehicles
● Supports various topologies: – Flyback, forward, buck, boost – Push-pull, half-bridge, full-bridge with external interface circuit CLOCK 4 RT 5 CT 6 RAMP 7 E/A Out 3 Error Amp NI 2 INV 1 1.25 V OSC Wide Bandwidth Error Amp. + − Inhibit PWM Latc...
