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
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
SOT-23 (DBV) 6 5 mm² 2.9 x 1.6
  • 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
  • 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

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.

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.

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Technical documentation

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Type Title Date
* Data sheet TLV1805-Q1 40V, Rail-to-Rail Input, Push-Pull Output, High Voltage Automotive Comparator with Shutdown datasheet (Rev. B) 30 Jan 2020
Functional safety information TLV1805-Q1 Functional Safety, FIT Rate and Failure Mode Distribution 17 Mar 2020
Application note Overcurrent latch circuit 09 Aug 2019
Application note Using Comparators in Reverse Current Applications (Rev. A) 11 Jun 2019
Application note TLV1805-Q1 EVM ISO Testing Results 22 Feb 2019
Application note Overvoltage protection with comparator circuit 17 Jan 2019
User guide TLV1805-Q1EVM Users Manual 26 Aug 2018

Design & development

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

Evaluation board

TLV1805EVMQ1 — TLV1805-Q1 evaluation module for reverse current protection

The TLV1805QEVM will demonstrate reverse current and reverse battery protection using a discrete comparator-based solution for both P and N channel MOSFET topologies.
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Simulation model

TLV1805Q1 TINA-TI Reference Design (Rev. A)

SNOM662A.TSC (42 KB) - TINA-TI Reference Design
Simulation model

TLV1805Q1 TINA-TI Spice Model (Rev. A)

SNOM663A.ZIP (11 KB) - TINA-TI Spice Model
Simulation model

Over-Current Protection with Latched Output

SNOM675.ZIP (8 KB) - TINA-TI Reference Design
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
Reference designs

PMP21953 — 40-V isolated comparator-based power supply reference design

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 (...)
Reference designs

TIDA-020023 — Automotive proportional solenoid drive with highly accurate current sensor reference design

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 (...)
Reference designs

TIDA-050008 — ADAS power reference design with improved voltage supervision

This automotive power reference design supports 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 cruise (...)
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SOT-23 (DBV) 6 View options

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