16-pin (HKT) package image


Radiation-hardened QMLV, 30-V input, 2-A dual-output 1-MHz PWM controller

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Quality information

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RoHS Exempt
Lead finish / Ball material NIAU
MSL rating / Peak reflow Level-NC-NC-NC
Quality, reliability
& packaging information

Information included:

  • RoHS
  • Device marking
  • Lead finish / Ball material
  • MSL rating / Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring
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Additional manufacturing information

Information included:

  • Fab location
  • Assembly location

Export classification

*For reference only

  • US ECCN: EAR99

Packaging information

Package | Pins CFP (HSL) (HKT) | 16
Operating temperature range (°C) 25 to 25
Package qty | Carrier 25 | TUBE

Features for the UC1825B-SP

  • 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)

(1)Radiation tolerance is a typical value based upon initial device qualification with dose rate = 10 mrad(Si)/s. Radiation Lot Acceptance Testing is available - contact factory for details.

Description for the UC1825B-SP

The UC1825B-SP PWM control device is optimized for high-frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current-mode or voltage mode systems with the capability for input voltage feed-forward.

Protection circuitry includes a current limit comparator with a 1-V threshold, a TTL compatible shutdown port, and a soft start pin which will double as a maximum duty-cycle clamp. The logic is fully latched to provide jitter-free operation and prohibit multiple pulses at an output. An undervoltage lockout section with 800 mV of hysteresis assures low start up current. During undervoltage lockout, the outputs are high impedance.

This device features totem pole outputs designed to source and sink high peak currents from capacitive loads, such as the gate of a power MOSFET. The on-state is designed as a high level.


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Carrier options

You can choose different carrier options based on the quantity of parts, including full reel, custom reel, cut tape, tube or tray.

A custom reel is a continuous length of cut tape from one reel to maintain lot- and date-code traceability, built to the exact quantity requested. Following industry standards, a brass shim connects an 18-inch leader and trailer on both sides of the cut tape for direct feeding into automated assembly machines. TI includes a reeling fee for custom reel orders.

Cut tape is a length of tape cut from a reel. TI may fulfill orders using multiple strips of cut tapes or boxes to satisfy the quantity requested.

TI often ships tube or tray devices inside a box or in the tube or tray, depending on inventory availability. We pack all tapes, tubes or sample boxes according to internal electrostatic discharge and moisture-sensitivity-level protection requirements.

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Lot and date code selection may be available

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