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onsemi LV58063MX-TLM-H
- Part No.:
- LV58063MX-TLM-H
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
LV58063MX-TLM-H.pdf
- Description:
- IC REG BUCK ADJ 3A 8MFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,034
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Product details
Overview
LV58063MX-TLM-H from SANYO Semiconductor (now ON Semiconductor) is a 1-channel step-down switching regulator IC with integrated 0.13Ω high-side MOSFET, fixed 370 kHz switching frequency, 0.8 V reference voltage, and thermal/over-current protection. It delivers up to 3 A output current and achieves 90% efficiency at 1 A, 12 VIN → 5 VOUT, targeting compact DC-DC power supplies in automotive body electronics and industrial control modules.
For engineers reviewing the LV58063MX-TLM-H datasheet, pinout, applications, or equivalent options, key selection criteria include its MFP8 (200mil) exposed-pad package, pulse-by-pulse current limiting, soft-start programmability via external capacitor, and 8–28 V input range supporting 12 V automotive rail regulation.
Technical Context
This Bi-CMOS current-mode controller integrates a high-side power switch and internal 5 V regulator for gate drive. Its error amplifier drives the COMP pin for Type-II/III compensation, while the FB pin senses output voltage against a precision 0.8 V reference with ±2% tolerance over 8–28 V input.
The IC employs fixed-frequency PWM with cycle-by-cycle peak current limiting and thermal shutdown at 160°C (40°C hysteresis). The BOOT pin requires a 0.01 μF capacitor to SW for high-side gate drive, and the SS pin sources 10 μA to set soft-start time via external capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 8 V to 28 V - supports 12 V automotive battery systems with transient margin up to 32 V max. |
| Output Current Capability | 3 A continuous - enabled by 0.13 Ω high-side RDS(on) and MFP8 exposed-pad thermal design. |
| Switching Frequency | 370 kHz (typ) - enables use of small 10 μH inductors and reduces EMI compared to lower frequencies. |
| Reference Voltage | 0.8 V ±2% - sets output voltage via resistor divider on FB pin; enables precise 3.3 V, 5 V, or custom outputs. |
| Efficiency | 90% at 1 A, 12 VIN → 5 VOUT - minimizes thermal load in space-constrained applications. |
| Standby Current | 70 μA - allows low-power sleep mode when EN pin is pulled low. |
| Protection Features | Thermal shutdown (160°C), pulse-by-pulse over-current, and undershoot/overshoot control - safeguards downstream loads without external circuitry. |
Pinout & Package
MFP8 (200mil) package with exposed thermal pad - 8-pin surface-mount outline measuring 5.0 mm × 4.4 mm × 1.7 mm max, optimized for PCB heat dissipation on specified 46.4 mm × 31.8 mm glass-epoxy board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: BOOT | Bootstrap capacitor connection | Drives high-side MOS gate above VIN; requires 0.01 μF capacitor to SW pin with optional 100 Ω series resistor for noise suppression. |
| 2: VIN | Main input supply | Accepts 8–28 V; requires ≥20 μF bulk capacitance to GND for stability and transient response. |
| 3: SW | Power switch node | Connects to inductor and Schottky diode/catch FET; swings between GND and VIN + VBOOT; must avoid negative excursions beyond –0.4 V. |
| 4: GND | Power and signal ground | Common return for all internal circuits and external LC filter; tied directly to exposed pad for thermal conduction. |
| 5: SS | Soft-start timing input | Sources 10 μA to external capacitor; sets ramp-up time (e.g., 0.015 μF = 1.2 ms) to limit inrush current. |
| 6: COMP | Loop compensation node | Connects external RC network to stabilize feedback loop; determines phase margin and transient response. |
| 7: EN | Enable control input | Active-high logic; >1.9 V enables operation, <0.8 V disables with 70 μA standby draw; open-circuit defaults to enable. |
| 8: FB | Feedback voltage sense | Monitors resistive divider output; regulates VOUT = 0.8 V × (1 + R1/R3); bias current ≤100 nA minimizes divider error. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 0.13 Ω high-side MOSFET | Reduces external component count and conduction losses, enabling 3 A output without discrete switch. |
| Overshoot control function | Actively limits output voltage spike during load transients, improving reliability of downstream 3.3 V or 5 V logic rails. |
| Current-mode control architecture | Provides inherent cycle-by-cycle current limiting and simplifies loop compensation versus voltage-mode designs. |
| Exposed thermal pad (MFP8) | Enables 2.05 W allowable power dissipation on specified PCB layout, critical for sustained 3 A operation. |
| Fixed 370 kHz oscillator | Ensures predictable EMI profile and eliminates need for external timing components or frequency adjustment. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Power Supply |
|---|---|
Use Scenario: Regulating 12 V vehicle battery to stable 5 V for microcontroller, CAN transceiver, and sensor interface circuitry. IC Role / Device Role / Timing Role: Primary step-down DC-DC converter providing isolated, efficient, and protected 5 V rail. Use Value: High efficiency (90%) and thermal shutdown prevent overheating in sealed enclosures; wide 8–28 V input accommodates cold-crank and load-dump conditions. | Use Scenario: Generating 3.3 V for FPGA configuration, ADC reference, and digital I/O in modular automation controllers. IC Role / Device Role / Timing Role: Fixed-frequency buck regulator with programmable soft-start for controlled power-up sequencing. Use Value: 0.8 V reference and FB pin accuracy enable tight 3.3 V regulation (±2%); SS pin ensures inrush current stays below 3 A during hot-plug events. |
| Smart Lighting Driver Power Stage | Point-of-Load Converter for Embedded Systems |
Use Scenario: Supplying 5 V to LED driver ICs and dimming microcontrollers in automotive interior lighting assemblies. IC Role / Device Role / Timing Role: Compact, thermally robust DC-DC stage delivering regulated power in high-density lamp housings. Use Value: MFP8 exposed-pad package dissipates heat effectively in confined spaces; overshoot control prevents voltage spikes that could damage sensitive LED drivers. | Use Scenario: Local 3.3 V or 5 V generation from 12 V backplane in networked edge devices or IoT gateways. IC Role / Device Role / Timing Role: Standalone buck regulator with EN pin enabling remote power management and low-quiescent sleep mode. Use Value: 70 μA standby current extends system uptime during idle; EN pin logic compatibility simplifies integration with host MCU GPIOs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DT-LF-Z | 36 V max input, 2 A output, 2 MHz switching, no exposed pad, different pinout | Higher frequency enables smaller magnetics but lower current rating and less thermal headroom | Choose for space-constrained designs needing >1 MHz operation; not drop-in due to pinout and current mismatch |
| TPS54331DR | 28 V max input, 3 A output, adjustable frequency (100–2500 kHz), integrated compensation | Requires external compensation components; wider frequency tuning but no overshoot control feature | Prefer when loop optimization flexibility is needed; LV58063MX-TLM-H offers simpler layout and built-in transient suppression |
Compared with MP2451DT-LF-Z and TPS54331DR, LV58063MX-TLM-H provides superior thermal performance via its exposed-pad MFP8 package and dedicated overshoot control-critical for automotive and industrial applications where load transients and ambient temperature variation are severe.
Availability
LV58063MX-TLM-H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power supplies, and smart lighting systems requiring stable component supply, long-term lifecycle support, and AEC-Q200-aligned reliability.
Supply support for LV58063MX-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 acquired by ON Semiconductor in 2011 and specialized in high-efficiency analog and power ICs for automotive and industrial markets before integration.
The LV58063MX-TLM-H belongs to SANYO's LV58xx family of monolithic step-down regulators designed specifically for 12 V automotive subsystems requiring compact size, thermal resilience, and robust protection under harsh electrical conditions.
FAQ
What is the maximum input voltage rating for LV58063MX-TLM-H?
The LV58063MX-TLM-H has an absolute maximum input voltage of 32 V on the VIN pin. This rating includes margin for automotive load-dump transients. Operation above 28 V is outside recommended conditions and may trigger thermal shutdown or reduce reliability. Always ensure coil and surge voltages remain within this limit-even momentarily-as exceeding it risks permanent damage to the IC.
Does LV58063MX-TLM-H support adjustable output voltage?
Yes, LV58063MX-TLM-H supports adjustable output voltage via the FB pin using an external resistor divider. With a fixed 0.8 V internal reference, VOUT = 0.8 V × (1 + R1/R3). Example configurations include 3.3 V (R1 = 27 kΩ, R3 = 10 kΩ) and 5 V (R1 = 43 kΩ, R3 = 10 kΩ). The FB pin bias current is ≤100 nA, minimizing divider error and enabling high-impedance networks.
How is thermal performance managed in LV58063MX-TLM-H?
LV58063MX-TLM-H uses an MFP8 package with an exposed thermal pad to maximize heat transfer to the PCB. Its allowable power dissipation is 2.05 W when mounted on the specified 46.4 mm × 31.8 mm glass-epoxy board. Thermal shutdown activates at 160°C with 40°C hysteresis, and the low 0.13 Ω high-side RDS(on) minimizes conduction loss-key factors enabling reliable 3 A operation in ambient temperatures up to +80°C.
Can LV58063MX-TLM-H be used without the soft-start capacitor?
No-LV58063MX-TLM-H requires an external capacitor on the SS pin to control startup behavior. The internal 10 μA current source charges this capacitor to ramp the reference voltage linearly. Omitting it causes uncontrolled inrush current, potentially tripping over-current protection or damaging the output capacitor. For a 1.2 ms soft-start time, use C6 = 0.015 μF, calculated as (10 μA × 1.2 ms) / 0.8 V.
What protection features does LV58063MX-TLM-H include?
LV58063MX-TLM-H includes pulse-by-pulse over-current protection, thermal shutdown at 160°C (with 40°C hysteresis), input UVLO, and overshoot control to suppress output voltage spikes during load transients. These functions operate autonomously without external components. The IC also features a low 70 μA standby current when disabled via the EN pin, enhancing system-level power management capability.
LV58063MX-TLM-H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 8V
- Voltage - Input (Max):
- 28V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 22.4V
- Current - Output:
- 3A
- Frequency - Switching:
- 370kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -20°C ~ 80°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MFP
LV58063MX-TLM-H FAQ
1.How can I place an order for LV58063MX-TLM-H through Aetrix?
Please submit a Request for Quotation (RFQ) for LV58063MX-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 LV58063MX-TLM-H reliable?
The price and inventory of LV58063MX-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 LV58063MX-TLM-H is usually 5 days.
3.What payment methods are accepted for LV58063MX-TLM-H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LV58063MX-TLM-H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LV58063MX-TLM-H?
LV58063MX-TLM-H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LV58063MX-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 LV58063MX-TLM-H?
For technical support, including LV58063MX-TLM-H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LV58063MX-TLM-H requirements.
6.How does Aetrix verify that LV58063MX-TLM-H is sourced from the original manufacturer or authorized distributors?
All LV58063MX-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 LV58063MX-TLM-H meets industry standards.
7.What is the process for return or replacement of LV58063MX-TLM-H?
All LV58063MX-TLM-H units undergo pre-shipment inspection (PSI). If there is an issue with LV58063MX-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 LV58063MX-TLM-H part is unused and in its original packaging.
Return procedure for LV58063MX-TLM-H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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