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onsemi LV5808MX-TLM-H
- Part No.:
- LV5808MX-TLM-H
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
LV5808MX-TLM-H.pdf
- Description:
- IC REG BUCK ADJ 2A 8MFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,239
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Product details
Overview
LV5808MX-TLM-H from SANYO Semiconductor (now ON Semiconductor) is a 1-channel Bi-CMOS step-down switching regulator with integrated 0.3Ω high-side MOSFET, fixed 370 kHz switching frequency, 0.8 V reference voltage, and thermal shutdown protection - designed for compact, high-efficiency DC/DC conversion in automotive body electronics and industrial power supplies delivering up to 2 A output current.
For engineers reviewing the LV5808MX-TLM-H datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage range (8–28 V), soft-start programmability via external capacitor, pulse-by-pulse over-current protection, and MFP8 (200mil) package thermal performance under continuous 2 A load conditions.
Technical Context
This current-mode controller uses internal error amplification, PWM comparator, and 370 kHz oscillator to regulate output voltage via feedback at the FB pin. It integrates a 5 V internal regulator for gate drive and bias, supports bootstrapped high-side FET operation via BOOT–SW coupling, and features dedicated COMP pin for loop compensation network design.
Thermal shutdown activates at 160°C junction temperature with 40°C hysteresis; EN pin enables/disables operation with 1.9 V high-threshold and 0.8 V low-threshold; soft-start time is set by external capacitor on SS pin using built-in 10 μA current source referenced to 0.8 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 8 V to 28 V - supports wide automotive battery transients and industrial 24 V rails without external pre-regulation. |
| Output Current Capability | 2 A continuous - enabled by 0.3 Ω high-side RDS(on) and low-thermal-resistance MFP8 package. |
| Reference Voltage | 0.8 V ±2% - sets output voltage via resistor divider; enables precise 3.3 V, 5 V, or custom outputs. |
| Switching Frequency | 370 kHz (typ) - balances EMI control, inductor size, and efficiency for mid-power applications. |
| Efficiency | 90% at 1 A, 5 V out, 12 V in - achieved via low-RDS(on) FET and optimized current-mode control loop. |
| Standby Current | <100 μA - enables ultra-low-power sleep mode when EN is low. |
| Soft-Start Control | Programmable via SS pin and external capacitor - prevents inrush current during power-up. |
Pinout & Package
MFP8 (200mil) surface-mount package with exposed thermal pad (SANYO standard); 8-pin layout optimized for heat dissipation and minimal PCB area. Pin 1 = BOOT, Pin 2 = VIN, Pin 3 = SW, Pin 4 = GND, Pin 5 = SS, Pin 6 = EN, Pin 7 = COMP, Pin 8 = FB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap capacitor connection | Provides gate drive voltage for high-side MOSFET; requires 0.022 μF capacitor between BOOT and SW with ~100 Ω series resistor for noise suppression. |
| VIN | Main input supply | Accepts 8–28 V input; requires ≥20 μF bulk capacitance to GND for stability and transient response. |
| SW | Power switch node | Connects to inductor and Schottky diode; carries high dv/dt switching waveform; must be routed with minimal parasitic inductance. |
| GND | Power and signal ground | Common return path for IC core, power stage, and feedback network; requires low-impedance PCB plane connection. |
| FB | Feedback input | Senses output voltage via resistor divider; internal 0.8 V reference sets regulation point; bias current ≤100 nA minimizes divider error. |
| SS | Soft-start timing | Internal 10 μA current source charges external capacitor; soft-start time = (CSS × 0.8 V) / 10 μA. |
| EN | Enable control | Active-high logic input; 1.9 V threshold ensures robust noise immunity; open-circuit disables regulator with <100 μA quiescent draw. |
| COMP | Loop compensation | Connects external RC network to stabilize control loop; placement near FB and GND critical for phase margin. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 0.3 Ω high-side MOSFET | Enables high-efficiency 2 A operation without external power switches or complex gate drivers. |
| Pulse-by-pulse over-current protection | Detects peak inductor current per cycle to prevent MOSFET failure during short-circuit or overload events. |
| Thermal shutdown with hysteresis | Shuts down at 160°C junction temperature and re-enables only after cooling by 40°C, preventing thermal cycling instability. |
| Fixed-frequency current-mode control | Delivers fast load-step response and simplifies EMI filtering versus variable-frequency alternatives. |
| Low-quiescent 100 μA standby mode | Reduces system-level power consumption in always-on applications such as CAN bus nodes or sensor hubs. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Power Supply |
|---|---|
Use Scenario: Powering microcontrollers, CAN transceivers, and sensors in door modules or lighting controllers. IC Role / Device Role / Timing Role: Primary 5 V or 3.3 V DC/DC converter supplying regulated rail from 12 V battery with transient tolerance. Use Value: High efficiency and thermal robustness ensure reliable operation across -20°C to +80°C ambient without heatsinking. | Use Scenario: Generating isolated or non-isolated 5 V/3.3 V rails for digital I/O circuitry in programmable logic controllers. IC Role / Device Role / Timing Role: Compact, self-contained buck regulator replacing linear regulators to reduce board heat and improve power density. Use Value: 28 V max input rating accommodates 24 V industrial supply variations and surge conditions per IEC 61000-4-5. |
| Point-of-Load Converter for MCU | Smart Sensor Node Power Management |
Use Scenario: Local regulation for ARM Cortex-M or RISC-V microcontrollers requiring stable 3.3 V at up to 2 A peak current. IC Role / Device Role / Timing Role: Step-down regulator with soft-start and enable control synchronized to system wake-up sequence. Use Value: Programmable soft-start prevents voltage overshoot and inrush stress on downstream capacitors and ICs. | Use Scenario: Battery-powered environmental monitoring nodes needing low-noise, low-quiescent power for analog front-ends and RF transceivers. IC Role / Device Role / Timing Role: Efficient buck converter operating in burst mode during sleep, activated only during measurement cycles. Use Value: Standby current <100 μA extends battery life while maintaining fast wake-up capability via EN pin control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2307DN-LF-Z (Monolithic Power Systems) | 3 A rated, 500 kHz switching, no integrated BOOT resistor; requires external bootstrap capacitor without series R. | Higher current and frequency; less tolerant of noisy SW node without added RC damping. | Preferred for higher-output designs where footprint allows larger inductor and tighter EMI control. |
| TPS54202DRCT (Texas Instruments) | 2 A, 400–2.5 MHz adjustable frequency, integrated soft-start ramp generator (no external cap required). | More flexible frequency tuning and simpler soft-start implementation; lacks thermal hysteresis specification. | Best for designs requiring programmable frequency or simplified BOM with no SS capacitor. |
Compared with MP2307DN-LF-Z and TPS54202DRCT, LV5808MX-TLM-H offers superior thermal hysteresis behavior (40°C), integrated BOOT resistor compatibility, and proven automotive-grade reliability in MFP8 packaging - making it optimal for space-constrained, thermally demanding applications where predictable shutdown/recovery is critical.
Availability
LV5808MX-TLM-H is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC power supplies, and smart sensor node designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LV5808MX-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; legacy SANYO power ICs like LV5808MX-TLM-H are supported under ON's extended product lifecycle program with full documentation and cross-reference guidance.
The LV5808MX series was developed specifically for compact, high-reliability DC/DC conversion in automotive and industrial environments where thermal resilience, input voltage robustness, and minimal external component count are essential.
FAQ
What is the maximum input voltage rating for LV5808MX-TLM-H?
The LV5808MX-TLM-H supports a maximum input voltage of 32 V, with absolute maximum ratings specifying VIN ≤ 32 V and BOOT–SW differential ≤ 7 V. This allows safe operation across automotive battery systems including load-dump transients up to 28 V nominal input, provided proper input capacitance and clamping are implemented per the recommended operating conditions.
Does LV5808MX-TLM-H require an external bootstrap resistor?
Yes, LV5808MX-TLM-H benefits from a ~100 Ω resistor in series with the BOOT capacitor to suppress ringing and protect the SW pin's absolute maximum rating. The datasheet explicitly recommends this resistor to ensure stable operation and eliminate noise - unlike some newer regulators with integrated BOOT damping.
How is the output voltage set on LV5808MX-TLM-H?
The output voltage of LV5808MX-TLM-H is set via a resistor divider from VOUT to FB to GND, using the internal 0.8 V reference. For example, a 3.3 V output uses R1 = 27 kΩ, R2 = 4.3 kΩ, and R3 = 10 kΩ in the configuration shown in the sample circuit, yielding VOUT = 0.8 V × (1 + (R1 + R2)/R3). FB pin bias current is ≤100 nA, minimizing divider error.
What thermal protection features does LV5808MX-TLM-H include?
LV5808MX-TLM-H incorporates thermal shutdown at 160°C junction temperature with 40°C hysteresis, meaning it resumes operation only after cooling to 120°C. This design guarantee prevents destructive thermal cycling and ensures safe recovery under sustained overload or poor heatsinking - a key differentiator versus regulators with no hysteresis or unspecified reset thresholds.
Can LV5808MX-TLM-H operate with an input voltage below 8 V?
No, LV5808MX-TLM-H is not specified for operation below 8 V input. The recommended operating condition states VIN = 8–28 V, and UVLO circuitry disables the device below this range. Attempting operation at lower voltages may result in unstable regulation, uncontrolled switching, or failure to start - use a different regulator if sub-8 V input is required.
LV5808MX-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:
- 2A
- Frequency - Switching:
- 370kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -20°C ~ 80°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MFP
LV5808MX-TLM-H FAQ
1.How can I place an order for LV5808MX-TLM-H through Aetrix?
Please submit a Request for Quotation (RFQ) for LV5808MX-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 LV5808MX-TLM-H reliable?
The price and inventory of LV5808MX-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 LV5808MX-TLM-H is usually 5 days.
3.What payment methods are accepted for LV5808MX-TLM-H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LV5808MX-TLM-H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LV5808MX-TLM-H?
LV5808MX-TLM-H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LV5808MX-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 LV5808MX-TLM-H?
For technical support, including LV5808MX-TLM-H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LV5808MX-TLM-H requirements.
6.How does Aetrix verify that LV5808MX-TLM-H is sourced from the original manufacturer or authorized distributors?
All LV5808MX-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 LV5808MX-TLM-H meets industry standards.
7.What is the process for return or replacement of LV5808MX-TLM-H?
All LV5808MX-TLM-H units undergo pre-shipment inspection (PSI). If there is an issue with LV5808MX-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 LV5808MX-TLM-H part is unused and in its original packaging.
Return procedure for LV5808MX-TLM-H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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