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onsemi LV5876MXL-TLM-H
- Part No.:
- LV5876MXL-TLM-H
- Manufacturer:
- onsemi
- Package:
- -
- Datasheet:
-
LV5876MXL-TLM-H.pdf
- Description:
- STEP DOWN SWITCHING REGULATOR
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Inventory:105,000
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Product details
Overview
LV5876MXL-TLM-H from SANYO Semiconductor (now ON Semiconductor) is a 1-channel current-mode step-down switching regulator IC with integrated high- and low-side 0.13Ω power MOSFETs, delivering up to 3A output current, 93% efficiency at 1A/5V from 12V input, and fixed 340kHz switching frequency. It operates from 8–18V input, provides 0.672V reference voltage, and supports soft-start, thermal shutdown, and cycle-by-cycle overcurrent protection in automotive and industrial power supply applications.
For engineers reviewing the LV5876MXL-TLM-H datasheet, pinout, applications, or equivalent options, key selection considerations include its MFP8 (200mil) heat-sink package, EN-controlled standby current ≤60μA, FB-based output voltage setting, BOOT/SW bootstrap operation, and thermal shutdown at 160°C with 40°C hysteresis.
Technical Context
This Bi-CMOS regulator uses peak-current-mode control for fast load transient response and simplified loop compensation via the COMP pin. Its internal 5V regulator powers gate drivers, and the BOOT-SW bootstrap circuit enables high-side N-channel MOSFET drive with external 0.1μF capacitor and optional 15Ω series resistor for noise suppression.
The IC integrates UVLO (6.0V lock / 6.9V release), soft-stop discharge path (35Ω SW-to-GND), latch-off overcurrent protection, and thermal shutdown with hysteresis-enabling robust operation in thermally constrained environments without external supervision circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 8–18 V - Supports 12V automotive battery systems with margin for load dump transients |
| Output Current Capability | 3 A continuous - Enabled by dual 0.13Ω RDS(on) MOSFETs and MFP8 thermal design |
| Switching Frequency | 340 kHz fixed - Enables compact LC filter design with standard 10μH inductors |
| Reference Voltage | 0.672 V ±2% - Sets output voltage via FB resistive divider; enables 3.3V/5V/12V configurations |
| Efficiency | 93% @ 1A, 5V out, 12V in - Minimizes thermal load in enclosed industrial modules |
| Standby Current | ≤60 μA - Achieved via EN pin disable; critical for always-on automotive subsystems |
| Thermal Shutdown | 160°C with 40°C hysteresis - Prevents cumulative thermal damage during sustained overload |
Pinout & Package
MFP8 (200mil) surface-mount package with exposed heat sink pad (5.0 × 4.4 mm footprint, 1.7 mm max height); thermally optimized for PCB copper pour attachment under GND and SW pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: BOOT | Bootstrap capacitor connection | Drives high-side MOSFET gate; requires 0.1μF ceramic cap to SW with optional 15Ω series resistor for EMI control |
| 2: VIN | Main power input | Accepts 8–18V; requires ≥10μF bulk capacitance to GND for stability and surge handling |
| 3: SW | Power switch node | Connects to inductor; integrates 35Ω soft-stop discharge transistor activated on EN=LOW/UVLO/TSD |
| 4: GND | Power and signal ground | Common return for power path, feedback, and compensation; must be low-impedance PCB plane |
| 5: FB | Feedback input | Senses output voltage via resistive divider; 10nA bias current enables high-impedance dividers |
| 6: COMP | Loop compensation node | Connects RC network to stabilize control loop; directly interfaces error amplifier output |
| 7: EN | Enable control | Active-high logic; <1.5V disables IC, reducing ICC to ≤60μA; open-circuit defaults to OFF |
| 8: SS | Soft-start timing | 6μA internal current source charges external capacitor; sets ramp time (e.g., 0.015μF = 1.7ms) |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual MOSFETs | 0.13Ω high- and low-side RDS(on) reduces conduction loss and eliminates external FET layout complexity |
| Current-mode control | Enables inherent cycle-by-cycle current limiting and stable operation across wide input/output ranges |
| Thermal shutdown with hysteresis | 160°C trip + 40°C hysteresis prevents thermal oscillation and ensures safe recovery after overload |
| Soft-start and soft-stop | SS pin controls output ramp-up; SW internal discharge transistor limits inductor energy release during shutdown |
| UVLO with precise thresholds | 6.0V lock / 6.9V release prevents erratic startup during brown-out conditions in vehicle electrical systems |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Supply |
|---|---|
Use Scenario: Powering microcontrollers, CAN transceivers, and sensor interfaces in door modules or lighting controllers. IC Role / Device Role / Timing Role: Primary 5V/3.3V DC-DC converter supplying regulated rail from 12V battery with load dump tolerance. Use Value: 93% efficiency minimizes heat in sealed enclosures; EN pin enables sleep-mode current reduction to ≤60μA. | Use Scenario: Generating isolated 5V logic supply for digital input/output cards in programmable logic controllers. IC Role / Device Role / Timing Role: Non-isolated buck regulator providing clean, stable 5V for FPGA configuration and level-shifting circuits. Use Value: Fixed 340kHz frequency simplifies EMI filtering; FB accuracy (±2%) ensures reliable ADC reference stability. |
| Automotive Infotainment Display Backlight Supply | Factory Automation Sensor Hub |
Use Scenario: Driving LED backlight strings requiring constant-current regulation via external driver IC powered by stable 5V rail. IC Role / Device Role / Timing Role: Intermediate power stage converting 12V battery to 5V for LED driver IC and display controller. Use Value: Thermal shutdown (160°C) protects against ambient temperature rise in dashboard-mounted units. | Use Scenario: Powering multi-sensor nodes (temperature, humidity, vibration) in edge gateway devices with long-term reliability requirements. IC Role / Device Role / Timing Role: Main 3.3V system rail generator from 12V field bus, supporting low-power MCU sleep states. Use Value: Soft-start (configurable via SS pin) prevents inrush current tripping upstream fuses during cold start. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2315DJ-LF-Z (Monolithic Power Systems) | 3A, 340kHz, 0.12Ω/0.15Ω MOSFETs, 0.8V ref, no BOOT pin (integrated bootstrap) | Requires different layout; lacks dedicated SS pin; higher ref voltage reduces output accuracy at low voltages | Preferred for space-constrained designs where BOOT routing is problematic |
| TPS54331DR (Texas Instruments) | 3A, 570kHz, external MOSFETs, 0.8V ref, adjustable frequency, no integrated thermal shutdown hysteresis | Needs external FETs and thermal monitoring; higher switching frequency increases EMI risk in noisy factory environments | Chosen when design flexibility (frequency, FET selection) outweighs integration benefits |
Compared with MP2315DJ-LF-Z and TPS54331DR, LV5876MXL-TLM-H offers superior thermal robustness (160°C shutdown + 40°C hysteresis), tighter reference (0.672V ±2%), and dedicated soft-start control-making it optimal for automotive and industrial applications demanding predictable fault recovery and precise low-voltage regulation.
Availability
LV5876MXL-TLM-H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power supplies, and factory automation sensor hubs requiring stable component supply, long-lifecycle support, and AEC-Q200-aligned reliability.
Supply support for LV5876MXL-TLM-H 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
SANYO Semiconductor was a Japanese analog and power IC specialist acquired by ON Semiconductor in 2011; its legacy products emphasize high-reliability automotive and industrial power conversion.
The LV5876MXL-TLM-H belongs to SANYO's LV58xx series of integrated buck regulators designed specifically for 12V battery-fed systems in automotive and harsh-environment industrial equipment.
FAQ
What is the maximum input voltage rating for LV5876MXL-TLM-H?
The LV5876MXL-TLM-H has a maximum input voltage rating of 20 V, with recommended operating range of 8–18 V. This allows safe operation in 12V automotive systems including transient spikes up to 20V. Exceeding 20V risks permanent damage to the VIN, BOOT, and SW pins per absolute maximum ratings. Always include input clamping or filtering if system-level transients exceed this limit. The LV5876MXL-TLM-H datasheet specifies VIN(max) = 20 V as an absolute limit-not a recommended operating condition.
How does the soft-start function work on LV5876MXL-TLM-H?
The LV5876MXL-TLM-H implements soft-start via an internal 6μA current source connected to the SS pin. An external capacitor (e.g., 0.015μF for 1.7ms) is charged linearly to the 0.672V reference, ramping the output voltage proportionally. This prevents inrush current and stabilizes the feedback loop during power-up. The LV5876MXL-TLM-H does not support adjustable soft-stop; instead, its SW pin integrates a 35Ω discharge path activated during EN=LOW, UVLO, or thermal shutdown.
What is the purpose of the BOOT pin on LV5876MXL-TLM-H?
The BOOT pin on LV5876MXL-TLM-H connects to the source of the high-side MOSFET and provides gate drive voltage above VIN via an external bootstrap capacitor (typically 0.1μF) between BOOT and SW. This enables full enhancement of the N-channel high-side switch. A 15Ω resistor in series with the capacitor is recommended to damp ringing and reduce EMI. The LV5876MXL-TLM-H requires proper BOOT capacitor placement and layout to ensure reliable high-side switching and avoid shoot-through.
Does LV5876MXL-TLM-H support adjustable output voltage?
Yes, LV5876MXL-TLM-H supports adjustable output voltage using the FB pin and a resistive divider. With a precise 0.672V internal reference, output voltage is calculated as VOUT = 0.672V × (1 + R1/R2). For example, 3.3V output uses R1 = 25.9kΩ and R2 = 10kΩ. The LV5876MXL-TLM-H's 10nA FB bias current enables use of high-value resistors to minimize divider current without sacrificing accuracy.
What thermal protection features does LV5876MXL-TLM-H include?
LV5876MXL-TLM-H includes thermal shutdown that activates at 160°C junction temperature and releases at 120°C (40°C hysteresis), preventing thermal oscillation. This protection is independent of load or input conditions and shuts down the entire IC-including gate drivers and oscillator. The LV5876MXL-TLM-H also specifies 2.05W maximum power dissipation on a defined 46×32mm PCB, guiding heatsinking requirements. Recovery requires temperature drop below 120°C and EN pin reassertion.
LV5876MXL-TLM-H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
- -
- Output Type:
- -
- Number of Outputs:
- -
- Voltage - Input (Min):
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Current - Output:
- -
- Frequency - Switching:
- -
- Synchronous Rectifier:
- -
- Operating Temperature:
- -
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- -
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- Supplier Device Package:
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LV5876MXL-TLM-H FAQ
1.How can I place an order for LV5876MXL-TLM-H through Aetrix?
Please submit a Request for Quotation (RFQ) for LV5876MXL-TLM-H 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 LV5876MXL-TLM-H reliable?
The price and inventory of LV5876MXL-TLM-H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LV5876MXL-TLM-H is usually 5 days.
3.What payment methods are accepted for LV5876MXL-TLM-H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LV5876MXL-TLM-H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LV5876MXL-TLM-H?
LV5876MXL-TLM-H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LV5876MXL-TLM-H 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 LV5876MXL-TLM-H?
For technical support, including LV5876MXL-TLM-H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LV5876MXL-TLM-H requirements.
6.How does Aetrix verify that LV5876MXL-TLM-H is sourced from the original manufacturer or authorized distributors?
All LV5876MXL-TLM-H 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 LV5876MXL-TLM-H meets industry standards.
7.What is the process for return or replacement of LV5876MXL-TLM-H?
All LV5876MXL-TLM-H units undergo pre-shipment inspection (PSI). If there is an issue with LV5876MXL-TLM-H, 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 LV5876MXL-TLM-H part is unused and in its original packaging.
Return procedure for LV5876MXL-TLM-H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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