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onsemi LV58063MCZ-AH
- Part No.:
- LV58063MCZ-AH
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
LV58063MCZ-AH.pdf
- Description:
- IC REG BUCK ADJ 3A 8SOIC/SOP8L
- Quantity:
- Payment:
- Shipping:
Inventory:2,413
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Product details
Overview
LV58063MCZ-AH from onsemi is a 1-channel step-down switching regulator with integrated 0.13Ω high-side MOSFET, delivering up to 3A output current, 370kHz fixed-frequency operation, and 0.8V reference voltage. It supports 8–28V input range and achieves 90% efficiency at 1A/5V output, targeting power conversion in LCD/PDP-TV and office equipment.
For engineers reviewing the LV58063MCZ-AH datasheet, pinout, applications, or equivalent options, key selection criteria include thermal shutdown (160°C), pulse-by-pulse over-current protection (3.8A peak), EN-controlled standby mode (70μA ICC1), externally adjustable soft start, and SOP8L (200mil) exposed-pad package compatibility.
Technical Context
This Bi-CMOS DC-DC converter uses current-mode control for fast load transient response and simplified loop compensation via the COMP pin. Its internal 5V regulator powers gate drivers and analog circuitry, while BOOT-SW bootstrap architecture enables high-side FET drive.
The device integrates UVLO, thermal shutdown with 40°C hysteresis, and overshoot control after over-current events. Soft start is implemented via internal 10μA current source charging an external capacitor at the SS pin, enabling precise ramp-up timing without external timers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 8 V to 28 V - supports wide automotive and industrial supply rails without pre-regulation |
| Output Current Capability | 3 A continuous - enabled by 0.13 Ω high-side RDS(on) and low-thermal-resistance SOP8L-EP package |
| Switching Frequency | 370 kHz (typ) - balances EMI performance and inductor size for compact designs |
| Reference Voltage | 0.8 V ±2% - sets output voltage accuracy via FB divider; enables 3.3V, 5V, or custom outputs |
| Standby Current | 70 μA - enables ultra-low-power sleep modes in consumer electronics with EN pin control |
| Over-Current Threshold | 3.8 A (peak) - provides pulse-by-pulse current limiting to protect switch and inductor during faults |
| Thermal Shutdown | 160 °C with 40 °C hysteresis - prevents permanent damage and allows safe recovery after overload |
Pinout & Package
SOP8L (200mil) package with exposed thermal pad (Case 751DM), optimized for PCB heat dissipation on standard glass-epoxy boards (46.4 × 31.8 × 1.7 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BOOT | Bootstrap capacitor connection | Drives high-side FET gate above VIN; requires ≥0.01μF ceramic cap between BOOT–SW and optional 100Ω series resistor for noise control |
| 2 - VIN | Main power input | Accepts 8–28V; requires ≥20μF bulk capacitance + 0.1μF ceramic for stability and noise suppression |
| 3 - SW | Power switch node | Connects to inductor and Schottky diode/anode; switching node with fast edges; avoid ferrite beads to prevent negative voltage excursions |
| 4 - GND | Power and signal ground | Common return for internal regulators, feedback, and compensation; must be low-impedance and tied to exposed pad |
| 5 - FB | Feedback input | Monitors output via resistive divider; 0.8V reference sets VOUT = 0.8 × (1 + R1/R3); bias current ≤100 nA minimizes divider error |
| 6 - COMP | Loop compensation node | External RC network stabilizes control loop; connects to error amplifier output; critical for transient response and phase margin |
| 7 - EN | Enable control input | Active-high logic; >1.9V enables operation, <0.8V disables; internal 16μA pull-up allows open-circuit enable |
| 8 - SS | Soft-start timing node | Internal 10μA current source charges external capacitor; TSS = (CSS × 0.8V)/10μA enables controlled output ramp |
Key Features
| Feature | Design Value |
|---|---|
| Overshoot control after OCP | Prevents output voltage spike following current-limit event, improving system reliability during fault recovery |
| Exposed thermal pad (SOP8L-EP) | Enables 2.05 W allowable power dissipation on specified board, reducing junction temperature rise under 3A load |
| Pulse-by-pulse over-current protection | Detects and limits peak switch current every cycle, allowing safe operation into short-circuit without latch-off |
| Internally regulated 5V supply | Provides stable bias for gate drivers and analog blocks independent of VIN fluctuations, enhancing startup robustness |
| UVLO with hysteresis | Ensures clean startup only when VIN exceeds valid threshold, preventing erratic operation during brown-out conditions |
Applications
| LCD/PDP-TV Power Supply | Set-Top Box (STB) Core Rail |
|---|---|
Use Scenario: Providing stable 3.3V or 5V main logic rail for display controller and video processing ICs in flat-panel TVs. IC Role / Device Role / Timing Role: Primary step-down regulator converting 12V or 24V intermediate bus to low-voltage digital rails. Use Value: High efficiency (90% @1A) reduces heat in sealed enclosures; SOP8L-EP package enables direct thermal coupling to heatsink layers. | Use Scenario: Generating clean 3.3V supply for SoC, memory, and tuner modules in cable/satellite STBs operating from 12V wall adapters. IC Role / Device Role / Timing Role: Main DC-DC converter with EN pin enabling remote power sequencing and low-quiescent standby. Use Value: 70μA standby current extends off-state battery life in always-on devices; 370kHz switching avoids audible noise in audio-sensitive environments. |
| Office Equipment Motor Control | White Goods Appliance Logic Supply |
Use Scenario: Powering microcontroller and sensor interface circuits in multifunction printers and scanners with intermittent high-current motor loads. IC Role / Device Role / Timing Role: Regulator supplying MCU core voltage while surviving load transients from stepper motor commutation. Use Value: Current-mode control delivers superior load-step response; pulse-by-pulse OCP prevents shutdown during motor stall events. | Use Scenario: Delivering reliable 5V rail to control boards in refrigerators, washing machines, and dishwashers exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Industrial-grade buck converter supporting -20°C to +80°C operating range with thermal shutdown protection. Use Value: 160°C thermal shutdown with 40°C hysteresis ensures safe operation under sustained overload; Pb-free/Halogen-free construction meets IEC 61000-6-3 compliance. |
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) | 400kHz switching frequency, 3.5A current limit, no exposed pad in SOIC8 | Lacks thermal pad; lower max power dissipation (1.5W vs 2.05W); higher RDS(on) (0.15Ω) | Preferred where board space is constrained but thermal headroom is sufficient; requires tighter layout for thermal management |
| TPS54332DR (Texas Instruments) | Adjustable frequency (100–2500kHz), 3.5A current limit, integrated boot diode | Higher quiescent current (120μA vs 70μA); no overshoot control feature post-OCP | Better for designs requiring EMI tuning via frequency modulation; less suitable for fault-recovery-critical systems |
Compared with MP2315DJ-LF-Z and TPS54332DR, the LV58063MCZ-AH offers superior thermal performance via its exposed pad, lower standby current for energy-sensitive applications, and unique overshoot control that enhances reliability after over-current events-making it optimal for consumer displays and white goods.
Availability
LV58063MCZ-AH is available at Aetrix Electronics and suitable for LCD/PDP-TV, set-top box, and white goods applications requiring stable component supply, Pb-free/Halogen-free compliance, and long-term industrial availability.
Supply support for LV58063MCZ-AH 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient technologies for automotive, industrial, cloud, and IoT applications.
The LV58063MCZ-AH belongs to onsemi's Bi-CMOS DC-DC regulator product line, engineered for high-efficiency, thermally robust power conversion in cost-sensitive consumer and appliance systems.
FAQ
What is the maximum input voltage rating for LV58063MCZ-AH?
The LV58063MCZ-AH has an absolute maximum input voltage rating of 32 V at the VIN pin. Operation beyond this voltage-even momentarily-may cause permanent damage. Designers must account for inductive kickback and surge voltages from external components like inductors and input filters to ensure the 32 V limit is never exceeded in practice. The recommended operating range remains 8–28 V.
Does LV58063MCZ-AH require an external bootstrap capacitor, and what value is recommended?
Yes, LV58063MCZ-AH requires an external ceramic capacitor of at least 0.01 μF between BOOT and SW pins to sustain high-side FET gate drive. A 0.1 μF X7R capacitor is commonly used for robustness. onsemi also recommends adding a ~100 Ω series resistor (Rb) between BOOT and the capacitor to reduce switching noise and maintain BOOT–SW voltage within the 7 V absolute maximum rating.
How is the output voltage set on LV58063MCZ-AH, and what is the reference voltage accuracy?
The LV58063MCZ-AH uses a precision 0.8 V reference voltage (±2% over 8–28 V input) at the FB pin to set output voltage via an external resistive divider. For example, a 27 kΩ top resistor and 10 kΩ bottom resistor yields VOUT = 0.8 × (1 + 27k/10k) = 3.304 V. FB bias current is ≤100 nA, minimizing divider error and enabling use of high-value resistors to reduce quiescent current.
What thermal performance can be expected from LV58063MCZ-AH in standard PCB layouts?
When mounted on the specified 46.4 mm × 31.8 mm × 1.7 mm double-sided glass-epoxy board, LV58063MCZ-AH achieves 2.05 W allowable power dissipation. Its exposed thermal pad must be soldered to a dedicated copper pour for effective heat transfer. Junction-to-ambient thermal resistance (θJA) is approximately 60°C/W under these conditions, enabling reliable 3 A operation at +80°C ambient with appropriate airflow or heatsinking.
Can LV58063MCZ-AH be used in automotive applications?
The LV58063MCZ-AH is not qualified for automotive AEC-Q100 applications. Its operating temperature range is –20°C to +80°C, and it lacks automotive-specific stress testing, qualification reports, or PPAP documentation. While it may function in non-safety-critical auxiliary systems (e.g., infotainment displays), onsemi does not endorse or guarantee its use in automotive powertrain, ADAS, or safety-related subsystems.
LV58063MCZ-AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tube
- 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):
- 28V
- Current - Output:
- 3A
- Frequency - Switching:
- 370kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -20°C ~ 80°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC-EP/SOP8L
LV58063MCZ-AH FAQ
1.How can I place an order for LV58063MCZ-AH through Aetrix?
Please submit a Request for Quotation (RFQ) for LV58063MCZ-AH 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 LV58063MCZ-AH reliable?
The price and inventory of LV58063MCZ-AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LV58063MCZ-AH is usually 5 days.
3.What payment methods are accepted for LV58063MCZ-AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LV58063MCZ-AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LV58063MCZ-AH?
LV58063MCZ-AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LV58063MCZ-AH 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 LV58063MCZ-AH?
For technical support, including LV58063MCZ-AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LV58063MCZ-AH requirements.
6.How does Aetrix verify that LV58063MCZ-AH is sourced from the original manufacturer or authorized distributors?
All LV58063MCZ-AH 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 LV58063MCZ-AH meets industry standards.
7.What is the process for return or replacement of LV58063MCZ-AH?
All LV58063MCZ-AH units undergo pre-shipment inspection (PSI). If there is an issue with LV58063MCZ-AH, 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 LV58063MCZ-AH part is unused and in its original packaging.
Return procedure for LV58063MCZ-AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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