TLV3011AIDCKR - 5µA Open-Drain Comparator w/ 1.24V Ref | SC70-6 | TI
料号： TLV3011AIDCKR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.75 | $1.75 |
| 10 | $1.52 | $15.20 |
| 100 | $1.21 | $121.00 |
| 500 | $0.96 | $480.00 |
| 1,000 | $0.78 | $780.00 |
| 3,000 | $0.62 | $1,860.00 |
TLV3011AIDCKR 概述
A comparator is an analog building block that compares two input voltages and produces a digital logic output indicating which one is larger. The TLV3011 family belongs to the open-drain comparator hierarchy, where the output transistor only sinks current and requires an external pull-up resistor to the desired logic rail. This contrasts with push-pull comparators like the TLV3012, which actively drive both high and low. Open-drain comparators are preferred when level-shifting is needed between logic domains, when wired-OR logic combining multiple comparator outputs is desired, or when the output must swing above VCC.
Key features include 5 µA maximum quiescent current, 1.242 V reference with 100 ppm/°C drift, internal hysteresis for clean switching, and propagation delay in the microsecond range suitable for low-speed monitoring. The SC-70-6 package measures approximately 2.0 x 1.25 mm, allowing placement in space-constrained wearables, IoT sensor nodes, and portable battery-management boards. The wide input common-mode range (rail-to-rail minus 200 mV margin) supports monitoring of signals at or near the supply rails, which simplifies battery-voltage detection in single-cell Li-ion systems down to 3.0 V cut-off.
Typical applications include battery voltage monitoring, window comparators for over-voltage/under-voltage detection, threshold detectors in portable medical devices, industrial sensor alarms, and simple relaxation oscillators. The internal reference enables a single-chip solution for generating a fixed threshold without adding external shunt regulators.
When designing with this part, choose the external pull-up resistor on OUT to match the desired logic-rail rise time and current; 100 kΩ to 1 MΩ values are typical. Ensure the reference output capacitor (if used at REF pin) is sized to filter reference noise without slowing response. The open-drain output allows combining multiple TLV3011 outputs for wired-OR fault signalling in redundant-supply monitor circuits.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： TLV3011AIDCKR ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
TLV3011AIDCKT
✅ 直接替换📋 参考替代料（不在目录中）
TLV3011AIDCKRG4
✅ 直接替换📋 参考替代料（不在目录中）
TLV3011BQDCKRQ1
✅ 直接替换📋 参考替代料（不在目录中）
TLV3012AIDCKR
✅ 直接替换📋 参考替代料（不在目录中）
TLV3011AIDCKTG4
✅ 直接替换📋 参考替代料（不在目录中）
TLV3011AIDCKR 最大额定值与电气特性
| Comparator Type | Micropower with integrated voltage reference |
| Number of Channels | 1 |
| 输出类型 | Open-Drain |
| Supply Voltage Range | 1.8 V to 5.5 V |
| Quiescent Current (max) | 5 µA |
| Input Common-Mode Range | 200 mV beyond supply rails |
| Internal Voltage Reference | 1.242 V series reference |
| Reference Drift | 100 ppm/°C (max) |
| 工作温度范围 | -40 °C to +125 °C |
| 封装 | SC-70-6 (DCK) |
| Package Size | approximately 2.0 x 1.25 mm |
| 安装类型 | Surface Mount |
| Hysteresis | Internal hysteresis |
| RoHS 状态 | Compliant |
| AEC-Q100 Automotive Qualification | No (Q1 variant available separately) |
TLV3011AIDCKR 引脚配置
| 引脚 1 | IN+ — Non-inverting input |
| 引脚 2 | V- — Negative supply (ground) |
| 引脚 3 | IN- — Inverting input |
| 引脚 4 | REF — 1.242 V reference output |
| 引脚 5 | OUT — Open-drain comparator output |
| 引脚 6 | V+ — Positive supply (1.8 V to 5.5 V) |
典型应用
TLV3011AIDCKR 适用于 6 应用s: Single-Cell Li-Ion Battery Voltage Monitor, Window Comparator for Over/Under-Voltage Detection, Portable Medical Threshold Detector, IoT Sensor Node Alarm Output, Industrial Sensor Threshold Switch, Relaxation Oscillator for Low-Frequency Clock.
Single-Cell Li-Ion Battery Voltage Monitor
The TLV3011AIDCKR's 1.242 V integrated reference, 5 µA quiescent current, and input common-mode that extends 200 mV beyond the rails make it ideal for monitoring a single-cell Li-ion battery down to a 3.0 V cut-off threshold. Placed between the cell and the MCU ADC rail with a resistor divider on IN+, the comparator trips when the divided cell voltage drops below 1.242 V, generating a low-battery interrupt. Unlike an ADC-based monitor that must wake the MCU periodically, the TLV3011 can hold the cell voltage in hardware while the MCU sleeps, extending standby life by orders of magnitude.
推荐
Window Comparator for Over/Under-Voltage Detection
The TLV3011AIDCKR's integrated reference and open-drain output enable a single-chip window comparator that asserts a fault signal when a monitored rail falls outside a defined band. Using two TLV3011 comparators with the 1.242 V reference summed into different dividers, both outputs wire-OR together to a single fault line that pulls low on either over-voltage or under-voltage condition. The 5 µA quiescent current per channel keeps total monitor overhead below 15 µA, suitable for always-on industrial 24 V and 12 V rail supervision.
推荐
Portable Medical Threshold Detector
The TLV3011AIDCKR's micropower 5 µA quiescent draw and SC-70-6 2.0 x 1.25 mm footprint suit it to portable medical threshold detectors such as pulse oximeters, glucose monitors, and wearable ECG leads where PCB area is measured in square millimeters. The integrated 1.242 V reference eliminates the need for an external shunt regulator on the analog front-end, reducing BOM count by one component. Its -40 °C to +125 °C operating range also covers body-temperature and skin-surface sensing across clinical environments.
推荐
IoT Sensor Node Alarm Output
For IoT sensor nodes running on coin-cell or energy-harvested power, the TLV3011AIDCKR serves as the alarm-output stage that wakes the radio only when a threshold is crossed. With 5 µA quiescent current, the comparator can run continuously while the MCU and radio stay in deep sleep for years. The open-drain OUT pin can pull up to a logic rail different from VCC, simplifying interface to a 1.8 V MCU from a 3.6 V battery. The wide input common-mode range also accepts signals near the battery rail directly without an attenuator.
推荐
Industrial Sensor Threshold Switch
In industrial 4 mA to 20 mA loops and 0 V to 10 V process signal paths, the TLV3011AIDCKR converts an analog threshold into a logic-level switch output for PLCs, motor drives, or safety relays. The 1.8 V to 5.5 V supply aligns with 24 V loop-powered instrumentation rails after a local regulator, and the -40 °C to +125 °C range handles outdoor cabinet and factory-floor temperatures. Its open-drain output interfaces directly to PLC discrete inputs with a single pull-up resistor, eliminating optocouplers in non-isolated designs.
推荐
Relaxation Oscillator for Low-Frequency Clock
The TLV3011AIDCKR with its internal reference can form a simple relaxation oscillator by charging a capacitor through a resistor toward VCC and using the comparator to discharge it when the reference threshold is reached. This topology generates low-frequency clocks from 1 Hz to 100 kHz without a crystal, useful as a watchdog timer, blinking-LED driver, or sub-Hz sleep wake-up source. The 5 µA quiescent current keeps oscillator power well under 50 µA even at 10 kHz, ideal for ultra-low-power timing in remote sensor nodes.
推荐
推荐产品汇总
工程参考数据： TLV3011AIDCKR ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TLV3011AIDCKT | TLV3011AIDCKRG4 | TLV3011BQDCKRQ1 | TLV3012AIDCKR | TLV3011AIDCKTG4 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | SC-70-6 (DCK) | SC-70-6 (DCK) - same | SC-70-6 (DCK) - same | SC-70-6 (DCK) - same | SC-70-6 (DCK) - same | SC-70-6 (DCK) - same |
| Output Type | Open-Drain | Open-Drain | Open-Drain | Open-Drain | Push-Pull | Open-Drain |
| Supply Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Quiescent Current (max) | 5 µA | 5 µA | 5 µA | 5 µA | 5 µA | 5 µA |
| Internal Reference Voltage | 1.242 V | 1.242 V | 1.242 V | 1.242 V | 1.242 V | 1.242 V |
| AEC-Q100 Automotive | No | No | No | Yes | No | No |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C |
关键差异点
- On-chip 1.242 V reference eliminates external shunt （对比 TLV2402 (dual op-amp without reference))
- Lower quiescent current than most reference-equipped comparators （对比 MAX16050 (Maxim Integrated voltage monitor))
- Open-drain output supports level shifting and wired-OR logic （对比 TLV3012AIDCKR (push-pull variant))
设计说明
The TLV3011AIDCKR draws a maximum 5 µA quiescent current from V+, but the open-drain OUT pin sinks current through the external pull-up resistor and may draw additional current during transitions. Estimated: with a 100 kΩ pull-up to 3.3 V and 10 kHz switching, the load resistor adds 33 µA average; for always-on designs operating from a coin cell, size the pull-up at 1 MΩ or larger to keep total current under 10 µA.
Do not leave the REF pin floating if unused - according to the TI datasheet, the uncommitted reference can oscillate or inject noise into the supply if not bypassed. Add a 10 nF ceramic capacitor from REF to ground even when the reference is unused, or tie REF directly to ground if the application does not need it. Floating REF is a common cause of phantom current draw in micropower designs.
Route the input traces (IN+, IN-) away from noisy digital lines and the OUT pull-up node, since the comparator inputs are high-impedance and can pick up switching noise from adjacent traces. Place a 100 nF decoupling capacitor within 2 mm of the V+ pin and a 10 nF capacitor on REF for stable threshold accuracy. For sub-millivolt threshold precision, use a guard ring around the input pins tied to V-.
The open-drain OUT pin requires an external pull-up resistor to the desired logic rail; the choice of pull-up value trades rise time against quiescent current. Estimated: a 10 kΩ pull-up gives ~1 µs rise time but draws 500 µA when OUT is low; a 100 kΩ pull-up draws 50 µA with ~10 µs rise time; a 1 MΩ pull-up draws 5 µA with ~100 µs rise time - select based on the downstream logic's input capacitance and required response speed.
合规信息
RoHS and lead-free compliant per TI product page. The base TLV3011AIDCKR is not AEC-Q100 qualified - the TLV3011BQDCKRQ1 variant is the automotive-grade option in the same DCK package.
