Product details


Number of channels (#) 1 Output type Push-pull Propagation delay time (µs) 0.25 Vs (Max) (V) 40 Vs (Min) (V) 3.3 Vos (offset voltage @ 25 C) (Max) (mV) 4.5 Iq per channel (Typ) (mA) 0.15 Input bias current (+/-) (Max) (nA) 0.5 Rail-to-rail In Rating Automotive Operating temperature range (C) -40 to 125 Features Hysteresis, Shutdown VICR (Max) (V) 0 VICR (Min) (V) 0 open-in-new Find other Comparators

Package | Pins | Size

SOT-23 (DBV) 6 5 mm² 2.9 x 1.6 open-in-new Find other Comparators


  • AEC-Q100 qualified with the following results:
    • Device temperature grade 1: –40°C to +125°C ambient operating temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • 3.3 V to 40 V supply range
  • Low quiescent current: 135 µA
  • High peak current push-pull output
  • Rail-to-rail inputs with phase reversal protection
  • Built-In hysteresis: 14mV
  • 250ns propagation delay
  • Low input offset voltage: 500 µV
  • Shutdown with high-z output
  • Power-On Reset (POR)
  • SOT-23-6 package

All trademarks are the property of their respective owners.

open-in-new Find other Comparators


The TLV1805-Q1 high voltage comparator offers the unique combination of wide supply range, push-pull output, rail-to-rail inputs, low quiescent current, shutdown capability and fast output response. All these features make this comparator well-suited for applications that require sensing at the positive or negative voltage rails such as reverse current protection for a smart diode controller, overcurrent sensing, and overvoltage protection circuits where the push-pull output stage is used to drive the gate of a p-channel or n-channel MOSFET switch.

The high peak current push-pull output stage, which is unique for high-voltage comparators, offers the advantage of allowing the output to actively drive the load to either supply rail with a fast edge rate. This is especially valuable in applications where a MOSFET gate needs to be driven high or low quickly in order to connect or disconnect a host from an unexpected high voltage supply. Additional features such as low input offset voltage, low input bias currents and High-Z shutdown make the TLV1805-Q1 flexible enough to handle a broad range of applications. Power-On reset prevents false outputs at power-up.

The TLV1805-Q1 is AEC-Q100 qualified in a 6-pin SOT-23 package and is specified for operation across the automotive Grade 1 temperature range of –40°C to +125°C.

open-in-new Find other Comparators

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 TLV1805-Q1 40V, Rail-to-Rail Input, Push-Pull Output, High Voltage Automotive Comparator with Shutdown datasheet (Rev. B) Jan. 30, 2020
Functional safety information TLV1805-Q1 Functional Safety, FIT Rate and Failure Mode Distribution Mar. 17, 2020
Application note Overcurrent latch circuit Aug. 09, 2019
Application note Using Comparators in Reverse Current Applications (Rev. A) Jun. 11, 2019
Application note TLV1805-Q1 EVM ISO Testing Results Feb. 22, 2019
Application note Overvoltage protection with comparator circuit Jan. 17, 2019
User guide TLV1805-Q1EVM Users Manual Aug. 26, 2018
Technical articles Op Amps used as Comparators—is it okay? Mar. 14, 2012

Design & development

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

Hardware development

document-generic User guide
The TLV1805QEVM will demonstrate reverse current and reverse battery protection using a discrete comparator-based solution for both P and N channel MOSFET topologies.
  • Discrete Comparator Based Solution
  • Provides reverse current and reverse battery protection to load
  • Clamps reverse voltage within 1us
  • Demonstrates both P and N channel MOSFET Topologies
  • Internal or External Oscailltor Options for N-Ch Charge Pump
  • Withstands ISO 16750-2 Waveforms

Design tools & simulation

SNOM662A.TSC (42 KB) - TINA-TI Reference Design
SNOM663A.ZIP (11 KB) - TINA-TI Spice Model
SNOM675.ZIP (8 KB) - TINA-TI Reference Design
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide

Reference designs

40-V isolated comparator-based power supply reference design
PMP21953 This reference design demonstrates a cost focused approach of an isolated power supplies with low current capability. The design consists of three designs of three different topologies. All three design options are based on a high voltage comparator TLV1805-Q1 which works as a free-running (...)
document-generic Schematic document-generic User guide
Automotive proportional solenoid drive with highly accurate current sensor reference design
TIDA-020023 — This reference design demonstrates precise proportional solenoid drive using a simple push-pull output comparator and highly-accurate, integrated current shunt monitor. Precise and accurate control of proportional solenoids is especially necessary in the automatic transmission of a vehicle for (...)
document-generic Schematic document-generic User guide
ADAS power reference design with improved voltage supervision
TIDA-050008 This TI design provides an automotive power solution with additional precision voltage supervision and window watchdog for safety MCUs in advanced driver assistance systems (ADAS). These ADAS systems can control driving functions, such as automated emergency brake, lane keep assist, and adaptive (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
SOT-23 (DBV) 6 View options

Ordering & quality

Information included:
  • RoHS
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Support & training

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​