UC1846-DIE Series

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

Catalog

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

Part	Supplier Device Package	Current - Supply	Applications	Voltage - Input [Min]	Voltage - Input [Max]	Mounting Type	Voltage - Supply [Max]	Voltage - Supply [Min]	Package / Case [x]	Package / Case	Package / Case [y]	Operating Temperature [Max]	Operating Temperature [Min]	Operating Temperature [Min]	Operating Temperature [Max]
Texas Instruments UC1846MDWREP	16-SOIC	17 mA	PWM Controller	-3 V	40 V	Surface Mount	40 VDC	6.95 V	0.295 in	16-SOIC	7.5 mm	125 °C	-55 °C
Texas Instruments UC1846VTD2	Die		PWM Controller			Surface Mount	40 VDC	6.95 V		Die				-55 °C	125 °C

Catalog

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

Key Features

• Controlled BaselineOne Assembly/Test Site, One Fabrication SiteExtended Temperature Performance of -55°C to 125°CEnhanced Diminishing Manufacturing Sources (DMS) SupportEnhanced Product-Change NotificationQualification Pedigree(1)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 Suppression500-mA (Peak) Totem-Pole Outputs±1% Bandgap ReferenceUndervoltage LockoutSoft-Start CapabilityShutdown Terminal500-kHz Operation(1)Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specifiedperformance and environmental limits.Controlled BaselineOne Assembly/Test Site, One Fabrication SiteExtended Temperature Performance of -55°C to 125°CEnhanced Diminishing Manufacturing Sources (DMS) SupportEnhanced Product-Change NotificationQualification Pedigree(1)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 Suppression500-mA (Peak) Totem-Pole Outputs±1% Bandgap ReferenceUndervoltage LockoutSoft-Start CapabilityShutdown Terminal500-kHz Operation(1)Component qualification in accordance with JEDEC and industry standards to ensure reliable operation over an extended temperature range. This includes, but is not limited to, Highly Accelerated Stress Test (HAST) or biased 85/85, temperature cycle, autoclave or unbiased HAST, electromigration, bond intermetallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specifiedperformance and environmental limits.

Description

The UC1846-EP 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, deadline adjust capability, and a ±1% trimmed bandgap reference. The UC1846-EP features low outputs in the OFF state. The UC1846-EP 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, deadline adjust capability, and a ±1% trimmed bandgap reference. The UC1846-EP features low outputs in the OFF state.