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Parameters

Output options Fixed Output, Dual Output Iout (Max) (A) 5 Vin (Max) (V) 36 Vin (Min) (V) 5 Vout (Max) (V) 35 Vout (Min) (V) 2 Fixed output options (V) 1.5 Iq (Typ) (mA) 5.5 Thermal resistance θJA (°C/W) 64 Load capacitance (Min) (µF) 22 Rating Catalog Regulated outputs (#) 2 Features Accuracy (%) 3 Dropout voltage (Vdo) (Typ) (mV) 500 Operating temperature range (C) -40 to 85 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOIC (DW) 16 77 mm² 10.3 x 7.5 open-in-new Find other Linear regulators (LDO)

Features

  • Minimum VIN - VOUT Less Than 0.5V At 5A Load With External Pass Device
  • Equally Usable For Either Positive or Negative Regulator Design
  • Adjustable Low Threshold Current Sense Amplifier
  • Under And Over-Voltage Fault Alert With Programmable Delay
  • Over-Voltage Fault Latch With 100mA Crowbar Drive Output
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Description

The UC1834 family of integrated circuits is optimized for the design of low input-output differential linear regulators. A high gain amplifier and 200mA sink or source drive outputs facilitate high output current designs which use an external pass device. With both positive and negative precision references, either polarity of regulator can be implemented. A current sense amplifier with a low, adjustable, threshold can be used to sense and limit currents in either the positive or negative supply lines.

In addition, this series of parts has a fault monitoring circuit which senses both under and over-voltage fault conditions. After a user defined delay for transient rejection, this circuitry provides a fault alert output for either fault condition. In the over-voltage case, a 100mA crowbar output is activated. An over-voltage latch will maintain the crowbar output and can be used to shutdown the driver outputs. System control to the device can be accommodated at a single input which will act as both a supply reset and remote shutdown terminal. These die are protected against excessive power dissipation by an internal thermal shutdown function.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 8
Type Title Date
* Datasheet High Efficiency Linear Regulator datasheet Sep. 05, 1999
Application note LDO Noise Demystified (Rev. B) Aug. 18, 2020
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Application note LDO PSRR Measurement Simplified (Rev. A) Aug. 09, 2017
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
Application note Versatile UC1834 Optimizes Linear Regulator Efficiency Sep. 05, 1999

Design & development

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CAD/CAE symbols

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SOIC (DW) 16 View options

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