Product details


Output options Adjustable Output Vin (Max) (V) 36 Vin (Min) (V) 6 Vout (Max) (V) 35 Vout (Min) (V) 2.5 Iq (Typ) (mA) 3.7 Thermal resistance θJA (°C/W) 108 Load capacitance (Min) (µF) 10 Rating Catalog Features Accuracy (%) 1.2 Operating temperature range (C) -25 to 85 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new Find other Linear regulators (LDO)


  • Complete Control for a High Current, Low Dropout, Linear Regulator
  • Fixed 5V or Adjustable Output Voltage
  • Accurate 2.5A Current Limiting with Foldback
  • Internal Current Sense Resistor
  • Remote Sense for Improved Load Regulation
  • External Shutdown
  • Under-Voltage Lockout and Reverse Voltage Protection
  • Thermal Shutdown Protection
  • 8 Pin Mini-Dip Package (Surface Mount also Available)
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The UC1835/6 families of linear controllers are optimized for the design of low cost, low dropout, linear regulators. Using an external pass element, dropout voltages of less than 0.5V are readily obtained. These devices contain a high gain error amplifier, a 250mA output driver, and a precision reference. In addition, current sense with fold-back provides for a 2.5A peak output current dropping to less than 0.5A at short circuit.

These devices are available in fixed, 5V, (UC1835), or adjustable, (UC1836), versions. In the fixed 5 volt version, the only external parts required are an external pass element, an output capacitor, and a compensation capacitor. On the adjustable version the output voltage can be set anywhere from 2.5V to 35V with two external resistors.

Additional features of these devices include under-voltage lockout for predictable start-up, thermal shutdown and short circuit current limiting to protect the driver device. On the fixed voltage version, a reverse voltage comparator minimizes reverse load current in the event of a negative input to output differential.

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Similar but not functionally equivalent to the compared device:
TPS7A85 ACTIVE 4-A, low-VIN, low-noise, ultra-low-dropout voltage regulator with power good with high-accuracy TPS7A85 is a newer 4-A higher performance fully integrated LDO.

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 Regulator Controller 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 DN-32 Optocoupler Feedback Drive Techniques Sep. 05, 1999

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Design tools & simulation

SLUM083.ZIP (57 KB) - PSpice Model
SLUM084.ZIP (124 KB) - PSpice Model
SLUM215.TSC (71 KB) - TINA-TI Reference Design
SLUM216.ZIP (12 KB) - TINA-TI Spice Model
SLUM217.ZIP (12 KB) - TINA-TI Spice Model
SLUM218.TSC (74 KB) - TINA-TI Reference Design

CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options

Ordering & quality

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