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Texas Instruments TPS38B5858FFDSKRQ1
- Part No.:
- TPS38B5858FFDSKRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
TPS38B5858FFDSKRQ1.pdf
- Description:
- AUTOMOTIVE 65-V DUAL-CHANNEL SUP
- Quantity:
- Payment:
- Shipping:
Inventory:5,403
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Product details
Overview
TPS38B5858FFDSKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 (–40°C to +125°C) dual-channel automotive overvoltage/undervoltage detector with 65 V input rating, 1 μA typical quiescent current, and ±1.5% voltage threshold accuracy across –40°C to +125°C. It monitors two independent supply rails-e.g., 12 V battery and 5 V MCU domain-with programmable sense/reset delays and supports both open-drain and push-pull outputs on Channel 1.
For engineers reviewing the TPS38B5858FFDSKRQ1 datasheet, TPS38B5858FFDSKRQ1 pinout, TPS38B5858FFDSKRQ1 application, or TPS38B5858FFDSKRQ1 equivalent, this device delivers precise OV/UV fault detection in telematics control units, emergency call systems, and body control modules where high-voltage resilience, low power, and functional safety support are mandatory.
Technical Context
The TPS38B5858FFDSKRQ1 implements dual independent sensing channels with separate SENSE1/SENSE2 inputs, each configurable for overvoltage (OV) or undervoltage (UV) detection via internal resistor ladder or external divider. Each channel features user-programmable sense delay (CTS1/CTS2) and reset delay (CTR1/CTR2), with internal timing resistors of 100 kΩ (CTSx) and 1 MΩ (CTR x) enabling 1.28 ms–1.28 s and 12.8 ms–12.8 s ranges respectively.
Its output topology is configurable per channel: Channel 1 supports push-pull or open-drain with active-high or active-low logic; Channel 2 is open-drain only. The SENSE pins tolerate up to 65 V, and VDD operates independently from monitored voltages-enabling redundancy in high-reliability automotive systems where SENSE can monitor higher or lower voltages than VDD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 65 V - enables direct connection to 12 V/24 V automotive battery without external regulators |
| Threshold Accuracy | ±1.5% (2.7–36 V range), ±0.8% (800 mV option) - ensures reliable fault detection across full automotive temperature range |
| Quiescent Current | 1 μA typical at 25°C - minimizes standby power draw in always-on vehicle subsystems |
| Detection Time | 10 μs - fast response to transient overvoltage events such as load dump or cold crank |
| Hysteresis Options | 2%–13% (1% steps) or fixed 0.5–2.5 V - suppresses false resets during battery voltage transients |
| Sense Delay Range | 1.28 ms to 1.28 s (via CTS1/CTS2 capacitor) - configurable debouncing for noisy supply rails |
| Reset Delay Range | 12.8 ms to 12.8 s (via CTR1/CTR2 capacitor) - ensures stable system reset after fault clearance |
Pinout & Package
TPS38B5858FFDSKRQ1 is packaged in a 10-pin WSON (DSK) with 2.5 mm × 2.5 mm body size and wettable flanks for AOI compatibility. The central thermal pad is non-conductive to meet IEC60664 creepage requirements between VDD and GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Input | 2.7–65 V supply input; bypassed with 0.1 µF capacitor to GND for noise immunity |
| SENSE1 | Channel 1 Monitor Input | High-impedance input for OV/UV detection on first rail; supports internal divider or external resistor network |
| SENSE2 | Channel 2 Monitor Input | Independent high-Z input for second rail monitoring; enables dual-rail supervision without shared reference |
| GND | Ground Reference | Common return path for all circuitry; all GND pins must be electrically connected to PCB ground plane |
| CTR1/MR | Channel 1 Reset Delay / Manual Reset | Capacitor-programmable reset delay or active-low manual reset trigger; must not be driven high |
| CTR2/MR | Channel 2 Reset Delay / Manual Reset | Capacitor-programmable reset delay or active-low manual reset trigger; functionally identical to CTR1/MR |
| CTS1 | Channel 1 Sense Delay | Capacitor-programmable sense delay for SENSE1; provides glitch rejection on monitored rail |
| CTS2 | Channel 2 Sense Delay | Capacitor-programmable sense delay for SENSE2; enables independent debounce timing per channel |
| RESET1 | Channel 1 Output | Configurable push-pull or open-drain output; asserts on OV/UV fault with programmable delay |
| RESET2 | Channel 2 Output | Open-drain only output; asserts on SENSE2 OV/UV fault with independent delay programming |
Key Features
| Feature | Design Value |
|---|---|
| 65 V-rated SENSE and RESET pins | Enables direct high-voltage rail monitoring without external clamping or level-shifting circuitry |
| Programmable hysteresis (2–13%) | Prevents oscillatory reset behavior during battery transients like start-stop or cold crank |
| Dual independent sense/reset delays | CTS1/CTS2 and CTR1/CTR2 allow per-channel timing optimization for mixed-criticality subsystems |
| Manual reset (MR) on both channels | Allows system-level forced reset initiation without cycling VDD, critical for field diagnostics and recovery |
| AEC-Q100 Grade 1 qualification | Validated for automotive ambient operation from –40°C to +125°C with HBM ±2 kV and CDM ±750 V ESD robustness |
Applications
| Telematics Control Unit (TCU) | Emergency Call System (eCall) |
|---|---|
|
Use Scenario: Monitors 12 V battery and 5 V MCU supply in LTE/V2X gateway modules subject to load dump and cranking transients. IC Role / Device Role / Timing Role: Dual-channel OV/UV supervisor asserting independent reset signals to baseband processor and modem SoC upon rail faults. Use Value: 10 μs detection time and 65 V tolerance prevent false resets during ISO 7637-2 pulse 5a (load dump), ensuring continuous connectivity. |
Use Scenario: Supervises backup power rail and main MCU supply in crash-triggered cellular module requiring guaranteed reset integrity. IC Role / Device Role / Timing Role: Provides redundant voltage monitoring with MR capability to force reset after airbag deployment signal. Use Value: ±1.5% threshold accuracy and built-in hysteresis ensure reliable fault detection across –40°C to +125°C, meeting ASIL-B functional safety goals. |
| Audio Amplifier Power Management | Body Control Module (BCM) |
|
Use Scenario: Guards Class-D amplifier supply against brown-out during engine start, preventing audio distortion or latch-up. IC Role / Device Role / Timing Role: Uses SENSE1 for 12 V input and SENSE2 for 3.3 V DSP core; generates staggered reset pulses to sequence power-up. Use Value: Independent CTS1/CTS2 delays enable selective debounce-shorter for amplifier rail, longer for DSP rail-to avoid simultaneous reset glitches. |
Use Scenario: Supervises multiple sub-systems (door locks, lighting, HVAC) powered from shared 12 V distribution bus. IC Role / Device Role / Timing Role: Channels 1 and 2 monitor primary and secondary fused branches; RESET1/RESET2 drive isolated watchdog timers. Use Value: 1 μA quiescent current meets OEM requirements for <100 µA total BCM standby leakage, extending battery life in parked vehicles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel automotive voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G33QDBVRQ1 | Single-channel, fixed 3.3 V threshold, no SENSE pin voltage flexibility; 300 nA IQ, 200 ms min reset delay | Lacks dual-rail monitoring and programmable OV/UV mode; suitable only for single-rail MCU reset | Select when only one supply rail requires supervision and fixed 3.3 V threshold suffices |
| MAX6375HATA+T | Single-channel, 5.0 V fixed UV threshold, 1.6 μA IQ, no programmable delays, SOIC-8 package | No dual-channel capability, no hysteresis adjustment, no 65 V rating-requires external clamping above 6 V | Use only in non-automotive, low-voltage (<6 V), cost-sensitive applications with minimal timing requirements |
Compared with TPS38B5858FFDSKRQ1, the TPS3808G33QDBVRQ1 offers lower quiescent current but sacrifices dual-channel flexibility and high-voltage resilience, while the MAX6375HATA+T lacks automotive qualification, programmability, and voltage range-making TPS38B5858FFDSKRQ1 the sole choice for AEC-Q100-compliant dual-rail supervision at 65 V.
Availability
TPS38B5858FFDSKRQ1 is available at Aetrix Electronics and suitable for telematics control units, emergency call systems, and body control modules requiring stable component supply, long-term automotive lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for TPS38B5858FFDSKRQ1 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 leader specializing in analog, embedded processing, and automotive ICs, with decades of automotive qualification expertise and functional safety documentation support.
The TPS38-Q1 product line is designed specifically for automotive power rail supervision-delivering high-voltage tolerance, ultra-low IQ, and AEC-Q100 Grade 1 reliability for safety-critical vehicle subsystems.
FAQ
What is the maximum input voltage rating for the SENSE pins on the TPS38B5858FFDSKRQ1?
The SENSE1 and SENSE2 pins on the TPS38B5858FFDSKRQ1 are rated for continuous operation up to 65 V, matching the VDD absolute maximum rating. This allows direct connection to automotive battery rails without external voltage clamping, provided external circuitry limits transient excursions to ≤70 V per absolute maximum ratings.
Does the TPS38B5858FFDSKRQ1 support both overvoltage and undervoltage detection on each channel?
Yes, the TPS38B5858FFDSKRQ1 supports configurable OV or UV detection on both SENSE1 and SENSE2 inputs. The detection mode is set by internal configuration-no external components are required-and each channel operates independently with its own threshold, hysteresis, and timing settings.
What is the typical quiescent current of the TPS38B5858FFDSKRQ1 and how does it vary with supply voltage?
The TPS38B5858FFDSKRQ1 draws 1 μA typical quiescent current at 25°C with VDD = 16 V and VIT = 2.7 V. IDD remains stable across 2.7–65 V, varying less than ±0.2 μA from –40°C to +125°C per Figure 7-4 and Figure 7-5 in the datasheet, confirming suitability for always-on automotive modules.
Can the reset output topology of Channel 1 on the TPS38B5858FFDSKRQ1 be configured, and if so, how?
Yes, Channel 1 output (RESET1) on the TPS38B5858FFDSKRQ1 is configurable as either open-drain or push-pull, with active-high or active-low logic. This is determined by the device variant suffix (e.g., "FF" indicates push-pull active-low); no external configuration pins or registers are used-the topology is fixed at manufacture.
Is the TPS38B5858FFDSKRQ1 qualified for automotive use, and what AEC-Q100 grade does it meet?
Yes, the TPS38B5858FFDSKRQ1 is AEC-Q100 qualified as Grade 1, with ambient operating temperature range of –40°C to +125°C, HBM ESD classification Level 2 (±2 kV), and CDM ESD classification Level C7B (±750 V). It also includes functional safety documentation to support ISO 26262 ASIL-B system development.
TPS38B5858FFDSKRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 5.8V, 5.8V
- Output:
- Open Drain, Push-Pull
- Reset:
- Active Low
- Reset Timeout:
- 100µs Maximum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WSON (2.5x2.5)
TPS38B5858FFDSKRQ1 FAQ
1.How can I place an order for TPS38B5858FFDSKRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS38B5858FFDSKRQ1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS38B5858FFDSKRQ1 reliable?
The price and inventory of TPS38B5858FFDSKRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS38B5858FFDSKRQ1 is usually 5 days.
3.What payment methods are accepted for TPS38B5858FFDSKRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS38B5858FFDSKRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS38B5858FFDSKRQ1?
TPS38B5858FFDSKRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS38B5858FFDSKRQ1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS38B5858FFDSKRQ1?
For technical support, including TPS38B5858FFDSKRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS38B5858FFDSKRQ1 requirements.
6.How does Aetrix verify that TPS38B5858FFDSKRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS38B5858FFDSKRQ1 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 TPS38B5858FFDSKRQ1 meets industry standards.
7.What is the process for return or replacement of TPS38B5858FFDSKRQ1?
All TPS38B5858FFDSKRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS38B5858FFDSKRQ1, 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 TPS38B5858FFDSKRQ1 part is unused and in its original packaging.
Return procedure for TPS38B5858FFDSKRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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