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onsemi LV58063MC-AH
- Part No.:
- LV58063MC-AH
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
LV58063MC-AH.pdf
- Description:
- IC REG BUCK ADJ 3A 8SOIC/SOP8L
- Quantity:
- Payment:
- Shipping:
Inventory:4,630
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Product details
Overview
LV58063MC-AH from onsemi is a 1-channel step-down switching regulator with integrated 0.13 Ω high-side MOSFET, 370 kHz fixed-frequency PWM control, 0.8 V reference voltage, and thermal shutdown protection. It delivers up to 3 A output current across 8–28 V input range and supports soft-start via external capacitor on SS pin. Used in LCD/STB power rails requiring compact, high-efficiency DC-DC conversion.
For engineers reviewing the LV58063MC-AH datasheet, pinout, applications, or equivalent options, key selection factors include its SOP8L (200mil) exposed-pad package, pulse-by-pulse over-current protection, 70 μA standby current, and externally adjustable soft-start timing - all critical for consumer power supply design validation and BOM optimization.
Technical Context
This Bi-CMOS synchronous step-down regulator uses current-mode control architecture for fast load transient response and stable loop compensation with minimal external components. Its internal 5 V regulator powers gate drivers and analog circuitry, while BOOT-SW bootstrap circuitry enables high-side FET operation without external charge pump.
The device integrates UVLO, EN-controlled enable logic, and dedicated COMP pin for type-II/III compensation network design. Thermal shutdown triggers at 160 °C with 40 °C hysteresis, and short-circuit protection reduces switching frequency to 30–46 kHz to limit power dissipation during fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 8 V to 28 V - supports wide-range industrial and consumer DC bus inputs including 12 V and 24 V systems. |
| Output Current Capability | 3 A continuous - sufficient for powering SoC cores, display backlights, or audio amplifiers in STB/LCD applications. |
| Switching Frequency | 370 kHz (typ) - balances EMI performance and inductor size; drops to 30–46 kHz during short-circuit for thermal safety. |
| Reference Voltage | 0.8 V ±2% - enables precise output regulation down to 0.8 V and scalable to 5 V, 3.3 V, or 1.8 V via FB resistor divider. |
| High-Side RDS(on) | 0.13 Ω - minimizes conduction loss at high load, enabling >90% efficiency at 1 A/5 V output from 12 V input. |
| Standby Current | 70 μA - allows low-power system sleep modes without compromising wake-up responsiveness. |
| Thermal Shutdown Threshold | 160 °C with 40 °C hysteresis - prevents latch-up and enables automatic recovery after cooling. |
Pinout & Package
SOP8L (200mil) package with exposed thermal pad (Case 751DM), optimized for PCB heat dissipation on standard 2-layer boards. Mounting requires soldering of the exposed pad to a thermal copper plane per onsemi's specified board (46.4 mm × 31.8 mm × 1.7 mm glass epoxy).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BOOT | Bootstrap capacitor connection | Provides gate drive voltage for high-side FET; requires ≥0.01 μF ceramic cap between BOOT and SW, plus optional 100 Ω series resistor to reduce noise. |
| 2 - VIN | Main power input | Accepts 8–28 V DC; requires ≥20 μF bulk capacitance + 0.1 μF ceramic for stability and noise suppression. |
| 3 - SW | Power switch node | Connects to external inductor and Schottky diode/capacitor; voltage swings from GND to VIN + Vreg; must stay within absolute max ratings. |
| 4 - GND | Analog and power ground | Common return for internal regulators, error amp, and external LC filter; tied directly to exposed pad for thermal path. |
| 5 - FB | Feedback input | Monitors output voltage via resistor divider; internal 0.8 V reference sets regulation point; bias current ≤100 nA minimizes divider error. |
| 6 - COMP | Compensation node | Connects external RC network to stabilize control loop; supports type-II or type-III compensation for varying load dynamics. |
| 7 - EN | Enable control input | Logic-high or open = active; grounded = shutdown (70 μA ICC1); must be asserted only after VIN is stable. |
| 8 - SS | Soft-start timing input | Internal 10 μA current source charges external capacitor; soft-start time = (CSS × 0.8 V)/10 μA - prevents inrush current. |
Key Features
| Feature | Design Value |
|---|---|
| Pulse-by-pulse over-current protection | Detects peak switch current per cycle and limits duty cycle to prevent MOSFET failure under overload or short-circuit. |
| Overshoot control after OCP event | Prevents output voltage spike during recovery from over-current by clamping COMP voltage and limiting dV/dt. |
| Exposed thermal pad (SOP8L EP) | Reduces junction-to-board thermal resistance to enable 2.05 W power dissipation on specified PCB layout. |
| Externally adjustable soft-start | Enables controlled ramp-up of output voltage using single capacitor - eliminates inrush stress on downstream capacitors and loads. |
| Integrated 5 V internal regulator | Supplies gate drivers and analog blocks independently of VIN, improving startup reliability and reducing external LDO requirements. |
Applications
| LCD/LED TV Power Supply | Set-Top Box (STB) Core Rail |
|---|---|
Use Scenario: Powers main 3.3 V or 5 V logic rail in flat-panel TV mainboard, supplying video processor, memory, and interface ICs. IC Role / Device Role / Timing Role: Primary non-isolated buck converter delivering regulated DC from 12 V or 24 V input bus. Use Value: High efficiency (>90% at 1 A) and thermal robustness ensure stable operation in enclosed chassis with limited airflow. | Use Scenario: Generates 1.8 V or 3.3 V core voltage for STB SoCs and tuners operating under dynamic load profiles. IC Role / Device Role / Timing Role: Step-down regulator with fast transient response to handle CPU burst currents without output droop. Use Value: Current-mode control and 370 kHz switching minimize output capacitance and footprint while maintaining <±2% regulation. |
| White Goods Control Board | Office Equipment Power Module |
Use Scenario: Supplies MCU, sensors, and display backlight in refrigerator or washing machine control units exposed to ambient temperatures from −20 °C to +80 °C. IC Role / Device Role / Timing Role: Main DC-DC converter supporting wide input range (8–28 V) and extended temperature operation. Use Value: Thermal shutdown at 160 °C with 40 °C hysteresis ensures safe recovery after temporary overloads in thermally constrained enclosures. | Use Scenario: Provides clean 5 V rail for printer controller, scanner ASIC, and USB interface in multifunction peripherals. IC Role / Device Role / Timing Role: Compact, low-noise buck regulator with EN pin enabling system-level power sequencing. Use Value: SOP8L package with exposed pad simplifies thermal management on cost-sensitive 2-layer PCBs without heatsinks. |
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 | 400 kHz switching frequency; 0.12 Ω high-side RDS(on); no exposed pad; 3.5 A current limit. | Smaller thermal margin in high-ambient environments due to SOIC-8 (non-EP) package; lacks overshoot control after OCP. | Preferred where board space is tighter and thermal load is moderate; verify loop stability with existing compensation network. |
| TPS54331DR | Adjustable frequency (100–600 kHz); 0.14 Ω RDS(on); integrated soft-start; no BOOT pin - uses integrated bootstrap. | Requires different layout (no external BOOT cap); higher quiescent current (125 μA vs. 70 μA) impacts ultra-low-power standby. | Chosen when programmable frequency or simplified layout outweighs need for lowest standby current and thermal headroom. |
Compared with LV58063MC-AH, MP2315DJ-LF-Z offers slightly higher current capability but less thermal resilience, while TPS54331DR trades exposed-pad thermal performance for layout simplicity and frequency flexibility - both require revalidation of compensation and thermal design.
Availability
LV58063MC-AH is available at Aetrix Electronics and suitable for LCD/STB power supplies, white goods control boards, and office equipment power modules requiring stable component supply, Pb-free/halogen-free compliance, and tape-and-reel delivery for automated assembly.
Supply support for LV58063MC-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 electronics, with leadership in power management, analog, and sensor technologies.
The LV58063MC-AH belongs to onsemi's Bi-CMOS DC-DC converter product line, engineered specifically for high-efficiency, compact, and thermally robust consumer and industrial power supplies operating from unregulated DC inputs.
FAQ
What is the maximum input voltage rating for LV58063MC-AH?
The LV58063MC-AH has an absolute maximum input voltage rating of 32 V on the VIN pin. Operation beyond this voltage risks permanent damage. The recommended operating range is 8 V to 28 V, and designers must account for coil flyback and surge voltages in layout to ensure instantaneous VIN never exceeds 32 V. This rating is confirmed in the Absolute Maximum Ratings table on page 2 of the official datasheet (No.A2120-2/6).
Does LV58063MC-AH require an external bootstrap capacitor?
Yes, LV58063MC-AH requires an external ceramic capacitor of at least 0.01 μF connected between BOOT and SW pins. This capacitor supplies gate drive voltage for the internal high-side MOSFET. A 100 Ω series resistor (Rb) is recommended between BOOT and the capacitor to suppress switching noise and maintain stability, as specified in the Pin Function description for BOOT on page 5 of the datasheet.
How is the output voltage set on LV58063MC-AH?
The output voltage of LV58063MC-AH is set via a resistor divider from VOUT to FB and from FB to GND. With a fixed 0.8 V internal reference, VOUT = 0.8 V × (1 + R1/R3), where R1 is the upper resistor and R3 is the lower resistor. Example values for 3.3 V output are R1 = 27 kΩ + 4.3 kΩ and R3 = 10 kΩ, yielding 3.304 V. This calculation and configuration are validated in the Sample Application Circuit on page 4.
What thermal derating applies to LV58063MC-AH?
LV58063MC-AH's allowable power dissipation decreases linearly above 25 °C ambient, dropping from 2.05 W at 25 °C to zero at approximately 115 °C on the specified test board (46.4 mm × 31.8 mm × 1.7 mm glass epoxy). Derating slope is ~22.5 mW/°C, per the Pd max vs. Ta curve on page 5. Full thermal performance depends on proper soldering of the exposed pad to a thermal plane.
Can LV58063MC-AH be used in automotive applications?
No, LV58063MC-AH is not qualified for automotive use. Its operating temperature range is −20 °C to +80 °C, and onsemi explicitly states that its products are "not designed, intended, or authorized for use … in systems intended to support or sustain life." It lacks AEC-Q100 qualification, extended temperature grade, and automotive-specific reliability testing - making it suitable only for consumer and industrial applications per the datasheet disclaimer on page 6.
LV58063MC-AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SOIC-EP/SOP8L
LV58063MC-AH FAQ
1.How can I place an order for LV58063MC-AH through Aetrix?
Please submit a Request for Quotation (RFQ) for LV58063MC-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 LV58063MC-AH reliable?
The price and inventory of LV58063MC-AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LV58063MC-AH is usually 5 days.
3.What payment methods are accepted for LV58063MC-AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LV58063MC-AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LV58063MC-AH?
LV58063MC-AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LV58063MC-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 LV58063MC-AH?
For technical support, including LV58063MC-AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LV58063MC-AH requirements.
6.How does Aetrix verify that LV58063MC-AH is sourced from the original manufacturer or authorized distributors?
All LV58063MC-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 LV58063MC-AH meets industry standards.
7.What is the process for return or replacement of LV58063MC-AH?
All LV58063MC-AH units undergo pre-shipment inspection (PSI). If there is an issue with LV58063MC-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 LV58063MC-AH part is unused and in its original packaging.
Return procedure for LV58063MC-AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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