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UC1856-SP датащи(PDF) 1 Page - Texas Instruments |
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UC1856-SP датащи(HTML) 1 Page - Texas Instruments |
1 / 24 page Product Folder Sample & Buy Technical Documents Tools & Software Support & Community UC1856-SP SLUSBV6 – APRIL 2014 UC1856-SP Improved Current-Mode PWM Controller 1 Features 3 Description The UC1856 is a high-performance version of the 1 • Pin-for-Pin Compatible With the UC1846 popular UC1846 series of current-mode controllers, • 65-ns Typical Delay From Shutdown to Outputs, and is intended for both design upgrades and new and 50-ns Typical Delay From SYNC to Outputs applications where speed and accuracy are • Improved Current-Sense Amplifier With Reduced important. All input-to-output delays have been minimized, and the current sense output is slew-rate Noise Sensitivity limited to reduce noise sensitivity. Fast 1.5-A peak • Differential Current Sense with 3-V Common- output stages have been added to allow rapid Mode Range switching of power FETs. • Trimmed-Oscillator Discharge Current for A low-impedance TTL-compatible sync output has Accurate Deadband Control been implemented with a TRI-STATE function when • Accurate 1-V Shutdown Threshold used as a sync input. • High-Current Dual Totem-Pole Outputs (1.5-A Internal-chip grounding has been improved to peak) minimize internal noise caused when driving large • TTL Compatible Oscillator SYNC Pin Thresholds capacitive loads. This improvement, in conjunction • 4-kV ESD Protection with the improved differential current-sense amplifier, results in enhanced noise immunity. 2 Applications Other features include a trimmed oscillator current (8%) for accurate frequency and dead-time control; a • DC-DC Converters 1-V 5% shutdown threshold; and 4-kV minimum • Supports Various Topologies: electrostatic discharge (ESD) protection on all pins. – Push-Pull, Forward, Half-Bridge, Full Bridge • Available in Military Temperature range (-55°C to Device Information(1) 125°C) DEVICE NAME PACKAGE BODY SIZE CDIP (16) 20.57 mm x 7.37 mm UC1856-SP CFP (16) 10.16 mm x 7.1 mm (1) For all available packages, see the orderable addendum at the end of the datasheet. Block Diagram 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
Аналогичный номер детали - UC1856-SP |
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Аналогичное описание - UC1856-SP |
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