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Texas Instruments TLV840MADL30DBVRQ1
- Part No.:
- TLV840MADL30DBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLV840MADL30DBVRQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,539
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Product details
Overview
TLV840MADL30DBVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive voltage supervisor IC with open-drain active-low reset output, 3.0 V fixed threshold (VIT−), 120 nA typical supply current, ±0.5% threshold accuracy, and programmable reset time delay via CT pin. It monitors power rails in ADAS controllers and radar ECUs where ultra-low quiescent current and precise brownout detection are critical.
For engineers reviewing the TLV840MADL30DBVRQ1 datasheet, TLV840MADL30DBVRQ1 pinout, TLV840MADL30DBVRQ1 application, or TLV840MADL30DBVRQ1 equivalent, this page delivers verified specifications, validated pin functions, confirmed automotive-grade operating conditions (–40°C to +125°C), and real-world timing behavior including 30 µs typical propagation delay and 40 µs minimum reset delay without external capacitor.
Technical Context
The TLV840MADL30DBVRQ1 implements a precision bandgap-based comparator with built-in 5% hysteresis (VHYS) and glitch immunity against transients ≥10 µs at 5% VIT− overdrive. Its internal timer circuit uses a 500 kΩ CT pin resistance to convert external capacitance into reset delay, supporting 40 µs (CT floating) up to 6.2 ms (10 nF).
It operates across 0.7 V to 6 V supply range while maintaining nano-power consumption and integrates manual reset (MR) with 1 µs propagation delay and 500 ns minimum pulse width. The open-drain RESET output requires an external pull-up and sinks up to 2 mA at 3.3 V with VOL ≤ 300 mV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIT− Threshold | 3.0 V fixed; enables reliable brownout detection for 3.3 V system rails with ±0.5% accuracy over temperature. |
| Supply Current (IDD) | 120 nA typical at 25°C; allows continuous monitoring in always-on automotive domains without battery drain. |
| Propagation Delay (tP_HL) | 30 µs typical; ensures fast response to supply dips while avoiding false triggers from short transients. |
| Reset Time Delay (tD) | 40 µs min (CT floating); programmable up to 619 ms (1 µF); supports flexible power sequencing and firmware initialization windows. |
| Hysteresis (VHYS) | 5% typical; prevents oscillatory reset assertion during slow-rising/falling VDD transitions near threshold. |
| Operating Temp Range | –40°C to +125°C ambient; qualified per AEC-Q100 Grade 1 for under-hood and safety-critical automotive locations. |
| Output Type | Open-drain active-low RESET; compatible with mixed-voltage systems via external pull-up to any rail ≤6.5 V. |
Pinout & Package
SOT-23-5 (DBV) package: 2.90 mm × 1.60 mm body, 0.95 mm max height, gull-wing leads, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Open-drain active-low output | Drives low when VDD < VIT− or MR asserted; requires external pull-up; sinks 2 mA max at 3.3 V with VOL ≤ 300 mV. |
| 2 - VDD | Supply input and monitored rail | Input voltage range 0.7 V–6 V; powers internal circuitry; threshold detection occurs on this pin. |
| 3 - GND | Ground reference | Common return path for VDD, MR, CT, and RESET; must be low-impedance for stable hysteresis and timing. |
| 4 - MR | Active-low manual reset input | Pull low ≥500 ns to force reset; internally pulled up to VDD (100 kΩ); logic low threshold = 0.3×VDD. |
| 5 - CT | Capacitor time-delay programming | Connect external capacitor to GND to set tD; floating = 40 µs min delay; 10 nF = 6.2 ms typical; RCT = 500 kΩ. |
Key Features
| Feature | Design Value |
|---|---|
| Nano-power operation | 120 nA typical IDD enables 10+ year battery life in always-on telematics modules. |
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to +125°C), HBM ±2 kV, CDM ±750 V - certified for safety-critical ECU use. |
| Programmable reset timing | CT pin supports 40 µs–6.2 s delay range using 0–10 µF capacitor - eliminates need for external timers or MCUs. |
| High-accuracy threshold | ±0.5% VIT− tolerance ensures consistent brownout detection across temperature and voltage corners. |
| Glitch-immune sensing | 10 µs minimum pulse rejection at 5% VIT− overdrive prevents false resets from EMI or load-switching noise. |
Applications
| Surround View System | Radar ECU |
|---|---|
|
Use Scenario: Monitors 3.3 V camera sensor rail and 5 V image processor rail during vehicle startup and vibration-induced voltage sag. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to hold camera SoC in reset until stable power is confirmed. Use Value: Prevents corrupted image capture or firmware lockup by enforcing 40 µs–10 ms configurable delay after VDD recovery. |
Use Scenario: Ensures clean boot of 77 GHz radar microcontroller after cold crank or alternator ripple events. IC Role / Device Role / Timing Role: Detects VDD dip below 3.0 V and holds MCU in reset for programmable duration while power stabilizes. Use Value: Eliminates false radar fault flags by rejecting sub-10 µs transients and guaranteeing ≥30 µs detection latency. |
| Automotive Gateway | ADAS Controller |
|
Use Scenario: Supervises dual 1.8 V and 3.3 V domain supplies in multi-protocol gateway managing CAN FD, Ethernet, and LIN. IC Role / Device Role / Timing Role: Provides independent reset assertion per rail with manual reset override via gateway MCU GPIO. Use Value: Enables synchronized domain reinitialization without requiring separate reset ICs per voltage domain. |
Use Scenario: Guards 12 V → 3.3 V LDO output powering vision processor and neural network accelerator. IC Role / Device Role / Timing Role: Acts as primary brownout detector with CT-programmed delay matching firmware boot sequence. Use Value: Matches reset hold time to processor's PLL lock and memory initialization window (e.g., 100 ms with 100 nF CT). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3840DL30DBVRQ1 | Higher 350 nA IDD; same SOT-23-5, 3.0 V threshold, open-drain active-low; no CT pin - fixed 200 ms delay. | Lacks programmable delay; suited for simpler systems where fixed timeout suffices. | Choose if design requires AEC-Q100 Grade 1 supervision but does not need adjustable reset timing. |
| TLV809M30DBVR | Non-automotive; 1.8 µA IDD; 3.0 V fixed threshold; open-drain active-low; no MR or CT pins; –40°C to +125°C. | Not AEC-Q100 qualified; lacks manual reset and programmable delay - limited to cost-sensitive industrial use. | Choose only for non-safety-critical applications where automotive qualification and flexibility are unnecessary. |
Compared with TLV840MADL30DBVRQ1, TPS3840DL30DBVRQ1 trades nano-power and programmability for higher integration of fixed delay, while TLV809M30DBVR sacrifices automotive compliance and feature set for lower unit cost in non-automotive designs.
Availability
TLV840MADL30DBVRQ1 is available at Aetrix Electronics and suitable for automotive radar ECUs, surround-view camera modules, and ADAS controller power management requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for TLV840MADL30DBVRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company designing analog and embedded processing solutions for automotive, industrial, and personal electronics markets.
The TLV840-Q1 product line delivers nano-power, high-accuracy voltage supervisors specifically engineered for automotive power-rail monitoring in ADAS, infotainment, and body electronics.
FAQ
What is the exact VIT− threshold voltage for TLV840MADL30DBVRQ1?
The TLV840MADL30DBVRQ1 has a factory-set fixed negative threshold voltage (VIT−) of 3.0 V, with ±0.5% typical accuracy across –40°C to +125°C ambient temperature. This value is laser-trimmed during production and confirmed in TI's SNVSBY3A datasheet Section 7.5 Electrical Characteristics.
Does TLV840MADL30DBVRQ1 require an external pull-up resistor on the RESET pin?
Yes, TLV840MADL30DBVRQ1 uses an open-drain active-low RESET output and requires an external pull-up resistor to define the high state voltage. The resistor connects between RESET and the desired pull-up rail (≤6.5 V), with value selected based on sink current requirements and VOL specification (≤300 mV at 2 mA).
How is the reset time delay programmed on TLV840MADL30DBVRQ1?
The reset time delay (tD) on TLV840MADL30DBVRQ1 is programmed by connecting a capacitor between the CT pin (Pin 5) and GND. With CT floating, tD = 40 µs minimum. Using a 10 nF capacitor yields ~6.2 ms typical delay. The internal CT pin resistance is 500 kΩ, and tD scales linearly with capacitance per TI's Equation 3.
Is TLV840MADL30DBVRQ1 qualified for automotive safety-critical applications?
Yes, TLV840MADL30DBVRQ1 is AEC-Q100 Grade 1 qualified (–40°C to +125°C ambient), with HBM ±2 kV and CDM ±750 V ESD ratings. It is designed for use in automotive safety-related systems including radar ECUs and ADAS controllers, though functional safety certification (e.g., ISO 26262) must be validated at the system level.
What is the minimum pulse width required on the MR pin to assert reset in TLV840MADL30DBVRQ1?
The TLV840MADL30DBVRQ1 requires a minimum MR pin pulse width of 500 ns to reliably assert the RESET output. This is specified as tMR_PW in Section 7.6 of the datasheet. Pulses shorter than this may fail to trigger reset, especially under worst-case voltage and temperature conditions.
TLV840MADL30DBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 40µs Typical
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TLV840MADL30DBVRQ1 FAQ
1.How can I place an order for TLV840MADL30DBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV840MADL30DBVRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of TLV840MADL30DBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV840MADL30DBVRQ1 is usually 5 days.
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5.How can I obtain technical support or documentation for TLV840MADL30DBVRQ1?
For technical support, including TLV840MADL30DBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV840MADL30DBVRQ1 requirements.
6.How does Aetrix verify that TLV840MADL30DBVRQ1 is sourced from the original manufacturer or authorized distributors?
All TLV840MADL30DBVRQ1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLV840MADL30DBVRQ1 meets industry standards.
7.What is the process for return or replacement of TLV840MADL30DBVRQ1?
All TLV840MADL30DBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TLV840MADL30DBVRQ1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TLV840MADL30DBVRQ1 part is unused and in its original packaging.
Return procedure for TLV840MADL30DBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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