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UC1846 Series

Space-grade, 40-V input, 1.5-A dual-output 500-kHz PWM controller in DIE

Manufacturer: Texas Instruments

Catalog(2 parts)

PartVoltage - Supply▲▼Voltage - Supply▲▼Mounting TypeSupplier Device PackageApplicationsPackage / CaseOperating Temperature▲▼Operating Temperature▲▼Voltage - Input▲▼Voltage - Input▲▼Current - Supply▲▼
Texas Instruments
UC1846MDWREP
Power Supply Controller PWM Controller 16-SOIC
40 V
6.949999809265137 V
Surface Mount
16-SOIC
PWM Controller
16-SOIC
-55 °C
125 °C
40 V
-1.7000000476837158 V
0.017000000923871994 A
Texas Instruments
UC1846VTD2
Power Supply Controller PWM Controller Die
40 V
6.949999809265137 V
Surface Mount
Die
PWM Controller
Die
-55 °C
125 °C

Key Features

• Automatic Feed-Forward CompensationProgrammable Pulse-by-Pulse Current LimitingAutomatic Symmetry Correction in Push-Pull ConfigurationEnhanced Load-Response CharacteristicsParallel Operation Capability for Modular Power SystemsDifferential Current-Sense Amplifier With Wide Common-Mode RangeDouble Pulse SuppressionUndervoltage LockoutSoft-Start CapabilityShutdown TerminalAutomatic Feed-Forward CompensationProgrammable Pulse-by-Pulse Current LimitingAutomatic Symmetry Correction in Push-Pull ConfigurationEnhanced Load-Response CharacteristicsParallel Operation Capability for Modular Power SystemsDifferential Current-Sense Amplifier With Wide Common-Mode RangeDouble Pulse SuppressionUndervoltage LockoutSoft-Start CapabilityShutdown Terminal

Description

AI
The UC1846 control IC provides all of the necessary features to implement fixed-frequency, current-mode control schemes, while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load-response characteristics, and a simpler, easier-to-design control loop. Topological advantages include inherent pulse-by-pulse current-limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel power modules, while maintaining equal current sharing. Protection circuitry includes built-in undervoltage lockout and programmable current limit, in addition to soft-start capability. A shutdown function is also available, which can initiate either a complete shutdown with automatic restart or latch the supply off. Other features include fully latched operation, double pulse suppression and deadline adjust capability. The UC1846 features low outputs in the OFF state. The UC1846 control IC provides all of the necessary features to implement fixed-frequency, current-mode control schemes, while maintaining a minimum external parts count. The superior performance of this technique can be measured in improved line regulation, enhanced load-response characteristics, and a simpler, easier-to-design control loop. Topological advantages include inherent pulse-by-pulse current-limiting capability, automatic symmetry correction for push-pull converters, and the ability to parallel power modules, while maintaining equal current sharing. Protection circuitry includes built-in undervoltage lockout and programmable current limit, in addition to soft-start capability. A shutdown function is also available, which can initiate either a complete shutdown with automatic restart or latch the supply off. Other features include fully latched operation, double pulse suppression and deadline adjust capability. The UC1846 features low outputs in the OFF state.