Overview
The LT6700HVCS6-1#TRPBF is a high-voltage, ultra-low-power precision dual comparator with an integrated reference voltage, manufactured by Analog Devices (ADI, formerly Linear Technology) .
It integrates two independent comparators and a precision 400mV reference source in an ultra-small SOT-23-6 package, supporting a wide input voltage range up to 36V . It is suitable for applications such as power monitoring, system reset, battery management, and ultra-low-power detection circuits.
LT6700HVCS6-1 is “Polarity Version 1” , indicating that the comparator’s input and output polarity characteristics are a combination of inverting input/open-drain output (distinguishing it from LT6700-2, LT6700-3, etc.).
Its extremely low power consumption, extremely high precision, and high voltage compatibility are the main reasons why it is favored in the fields of industrial, battery, and power monitoring.
Core parameters
Parameter Items | Specification |
Number of comparators | 2 (dual-channel) |
Reference voltage | Precision 400mV |
Power supply voltage range | 2.4V ~ 36V |
Input common mode range | Testing can be performed from ground to VCC. |
Input offset voltage | 0.5mV (typical) |
Static current (Iq) | 6µA (ultra-low power consumption) |
Propagation delay | 6µs (excellent in low-power mode) |
Output type | Open-drain output |
Output current sourcing capability | 40mA (maximum) |
Packaging | SOT-23-6 (CS6) |
Temperature range | -40°C ~ +125°C (Industrial Grade) |
Environmental protection requirements | RoHS / Lead-Free (#TRPBF) |
Features
Integrated precision 400mV reference source
It facilitates the construction of high-precision overvoltage and undervoltage window detection circuits.
No external precision reference is required, reducing BOM costs.
Dual comparator structure
Suitable for multi-channel voltage monitoring
It can simultaneously perform OV/UV (overvoltage/undervoltage) detection.
Extremely wide operating voltage range (2.4V–36V)
Compatible with battery systems (1S–8S Li-ion)
Compatible with industrial 24V power rails
Ultra-low power consumption (Iq only 6µA)
Ideal for battery-powered devices
Standby power consumption is close to zero
Open-drain output
Easy to interface with different voltage domains
Supports wired logic and multiple pull-up/pull-down connections.
High precision and low drift
Extremely low input offset voltage (0.5mV)
Maintaining stable accuracy when constructing threshold voltage dividers
Small SOT-23 package
Suitable for compact, portable, and embedded systems
Typical application scenarios
Power monitoring and reset control
Undervoltage lockout (UVLO)
Overvoltage protection (OVP)
Multi-rail monitoring circuit
Battery Management System (BMS)
Individual voltage monitoring
Battery undervoltage/over-discharge protection
Low battery indicator on handheld device
Portable and low-power devices
Timed/threshold detection
Battery-powered sensor system
Industrial Control Systems
24V system monitoring
Industrial power supply failure detection
Embedded system security monitoring
Motor driver protection
Analog front-end circuit protection
Voltage window comparison
Reference Application: Building a 3.3V Undervoltage Protection Circuit
The 400mV reference of the LT6700HVCS6-1 can be combined with a voltage divider network:
Vth = 0.4 V × (R1 + R2) / R2
For example, when detecting a 3.1V undervoltage:
R1 = 15k
R2 = 2k
The output directly pulls the MCU RESET pin low to achieve undervoltage reset.
Performance comparison (with similar devices)
Characteristic | LT6700HV | LM393 | TLV6700 (TI) |
Input range | 2.4–36V | 2–36V | 1.8–18V |
Integrated benchmark | ✔ 400mV | ✘ | ✔ 1.2V |
Static current | 6µA | 400µA | 7µA |
Packaging | SOT-23 | SOIC-8 | SOT-23 |
accuracy | high | middle | high |
The biggest advantage of the LT6700HV is that it combines high voltage, high precision, and ultra-low power consumption.
Manufacturer Profile: Analog Devices (ADI)
Analog Devices (ADI) is a leading global manufacturer of high-precision analog ICs, with its LT series (formerly Linear Technology) being particularly adept at:
Power Management
Comparator and Reference Source
Industrial-grade high-reliability chips
The LT6700HV inherits the high precision and excellent low power consumption performance of the LT series, making it a classic product for industrial and battery applications.
Why choose LT6700HVCS6-1#TRPBF?
● Ultra-low power consumption (6µA)
● Wide input voltage (36V)
● Integrated high-precision reference (no external reference required)
● Dual comparator design (supports 0V+UV)
● High-current open-drain output (40mA) compatible with different logic domains
● High precision, low offset, low drift
● Strong anti-interference capability
● Suitable for industrial/battery systems/vehicle equipment
● Small package, low BOM cost
Frequently Asked Questions (FAQ)
Q1: Can it be used for 12V/24V industrial power supply monitoring?
Absolutely. It can withstand input voltages up to 36V , making it ideal for industrial power supply environments with large voltage fluctuations of 12V, 24V, and even higher, and can stably perform voltage detection and protection functions.
Q2: Can precise undervoltage lockout (UVLO) be achieved?
Yes. This device can set a precise UVLO (undervoltage lockout) threshold through an external voltage divider network , thereby achieving effective monitoring and protection of industrial power supplies and ensuring that equipment operates within a safe voltage range.
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