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Product details

Parameters

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) 3 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 Approx. price (US$) 0.31 | 1ku 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

Features

  • 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

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Description

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
* Datasheet TLV1805-Q1 40V, Rail-to-Rail Input, Push-Pull Output, High Voltage Automotive Comparator with Shutdown datasheet (Rev. B) Jan. 30, 2020
Application notes TLV1805-Q1 Functional Safety, FIT Rate and Failure Mode Distribution Mar. 17, 2020
Application notes Overcurrent latch circuit Aug. 09, 2019
Application notes Using Comparators in Reverse Current Applications (Rev. A) Jun. 11, 2019
Application notes TLV1805-Q1 EVM ISO Testing Results Feb. 22, 2019
Application notes Overvoltage protection with comparator circuit Jan. 17, 2019
User guides 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

EVALUATION BOARDS Download
document-generic User guide
$99.00
Description
The TLV1805QEVM will demonstrate reverse current and reverse battery protection using a discrete comparator-based solution for both P and N channel MOSFET topologies.
Features
  • 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

SIMULATION MODELS Download
SNOM662A.TSC (42 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNOM663A.ZIP (11 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNOM675.ZIP (8 KB) - TINA-TI Reference Design
SIMULATION TOOLS Download
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

REFERENCE DESIGNS Download
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
REFERENCE DESIGNS Download
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
REFERENCE DESIGNS Download
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

Support & training

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Videos

PWM generator circuit

This video discusses how to design a PWM generator circuit using op amps and comparators.

Posted: 09-Jan-2020
Duration: 05:59

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