RH1573K - Radiation Hardened Low Dropout PNP Regulator Driver

Features

  • MIL-PRF-38535 Class V Compliant Dice
  • Drives External PNP Transistor
  • Output Currents up to 5A
  • Typical Dropout Voltage 0.22V at 2.5A
  • Fast Transient Response Reduces Output Capacitance
  • Latching Overload Protection
  • Precision Output Voltage: ±2% after 200Krad TID exposure
  • Single Supply Operation: VIN = 2.8V to 10V
  • Shutdown

Radiation Performance

  • Total Ionizing Dose (TID) Tolerance, per TM1019.8, MIL-STD-883:
    - 200kRad (Si), per condition A at 50Rads(Si)/sec
    - 50kRad (Si), per condition D at 10mRads(Si)/sec
    - ELDRS Pass 50kRad(Si)
  • Displacement Damage Defect (DDD) up to 1E12 Neutrons/cm2

All product configurations can be found in the MSK product table

Typical Application

RH1573K Typical Application

Description

The RH1573 is a regulator driver IC designed to provide a solution for applications requiring high current, low dropout and fast transient response. When driving an external PNP power transistor, this device provides load current up to 5A with a dropout voltage as low as 0.35V. The RH1573 circuitry is designed for extremely fast transient response. This greatly reduces the output capacitance requirements when the regulator is used in applications with fast, high current load transients. The RH1573 uses a time-delayed latching overcurrent protection technique that requires no external sense resistor. Base drive is limited for instantaneous protection, and a time-delayed latch protects the regulator from continuous short circuits.

Third Party Vendor Availability

Linear Technology partners with third party vendors who assemble and test packaged products with LTC RH Dice inside.

For MSK prefix products please click on the Part Number in the table below and scroll down the linked page to find the part number.

Part Number Description SMD
MSK5805 1A Adjustable, Ultra Low Drop Out Regulator -
MSK5823-1.8RH 3A Ultralow Dropout Fixed Voltage Regulator 5962-08246
MSK5823-2.5RH 3A Ultralow Dropout Fixed Voltage Regulator 5962-08246
MSK5824RH 3A Ultralow Dropout Fixed Voltage Regulator 5962-09208
MSK5825-2.5RH 3A Ultralow Dropout Fixed Voltage Regulator 5962-09209
MSK5825-3.3RH 3A Ultralow Dropout Fixed Voltage Regulator 5962-09209
MSK5826RH 3A Ultralow Dropout Fixed Voltage Regulator 5962-09210
MSK5800RH 4A Ultralow Dropout Adjustable Regulator 5962-09216
MSK5810RH 5A Ultralow Dropout Adjustable Regulator, Split Bias 5962-09216
MSK5820-1.5RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09216
MSK5820-1.8RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09216
MSK5820-1.9RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09216
MSK5820-2.5RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09216
MSK5820-2.8RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09216
MSK5820-3.3RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09216
MSK5820-5.0RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09216
MSK5821RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09216
MSK5822-1.5RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09236
MSK5822-1.9RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09236
MSK5822-2.5RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09236
MSK5822-2.8RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09236
MSK5822-3.3RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09236
MSK5822-5.0RH 5A Ultralow Dropout Fixed Voltage Regulator 5962-09236

Packaging

For complete and up to date package information and drawings, please refer to our packaging page

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Applications

  • Satellite System Power Supplies
  • Post Regulator for Switching Supplies
  • Ultra Low Dropout Applications
  • Low VIN Single Supply Regulators (e.g. 3.3V to 2.5V)

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Design Tools

Linear Technology provides a variety of custom design simulation tools and device models to allow even novice designers to quickly and easily evaluate circuits using high performance switching regulators, amplifiers, data converters, filters and more. Please visit our Design Tools page to view and download:

  • LTspice - A powerful SPICE simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators
  • LTpowerCAD - A complete power supply selection, synthesis and design tool
  • LTpowerPlay - A development environment supporting Linear Technology's Digital Power System Management (PSM) products
  • PScope & QuikEval - USB-based product demonstration and data acquisition system for use with our ADCs, DACs, and more
  • Linduino - Arduino compatible system for developing and distributing firmware libraries and example code
  • LinearLab Tools - A collection of Matlab and Python programs that provide direct access to Linear Technology’s data converter evaluation boards
  • And More!

Technical Support