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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

onsemi LV5803M-TE-L-E

Name: LV5803M-TE-L-E
Brand: onsemi
SKU: LV5803M-TE-L-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LV5803M-TE-L-E

Manufacturer:: onsemi

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 8-SOIC (0.173", 4.40mm Width)

Datasheet:: LV5803M-TE-L-E.pdf

Description:: IC REG BUCK ADJ 8MFP

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Product details

Overview

LV5803M-TE-L-E from SANYO Semiconductor is a 1-channel current-mode step-down switching regulator with integrated 0.2 Ω high-side MOSFET, supporting 4.5–18 V input and delivering up to 2 A output. It features fixed 330 kHz switching frequency, 0.8 V reference voltage, and soft-start via external capacitor. Used in compact DC/DC power supplies for industrial control modules requiring stable 3.3 V or 5 V rails.

For engineers reviewing the LV5803M-TE-L-E datasheet, pinout, applications, or equivalent options, key selection criteria include its MFP8 package thermal performance (1.15 W on specified board), pulse-by-pulse over-current protection, thermal shutdown at 160 °C, and standby current ≤80 µA - all critical for space-constrained, thermally sensitive embedded power designs.

Technical Context

The LV5803M-TE-L-E employs current-mode control architecture with internal 0.8 V error amplifier reference and 330 kHz oscillator, enabling fast load transient response and simplified loop compensation via the COMP pin. Its bootstrap gate drive (BOOT–SW) supports high-side N-MOS operation with external 0.022 µF capacitor and optional 100 Ω series resistor for noise suppression.

Protection logic includes pulse-by-pulse current limiting (2.5–5.9 A depending on VOUT), thermal shutdown with 40 °C hysteresis, and UVLO on EN pin (1.25–1.85 V threshold). The IC enters <80 µA standby when EN is pulled low, and resumes operation with controlled soft-start via SS pin current source (10 µA).

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.5 V to 18 V - supports 12 V automotive and industrial bus rails with 20 V absolute max rating
Output Current	Up to 2 A - enabled by integrated 0.2 Ω high-side FET and MFP8 package thermal design
Switching Frequency	330 kHz (typ) - balances EMI, inductor size, and efficiency for mid-power DC/DC
Reference Voltage	0.8 V ±2% - sets output via resistive divider; enables precise 1.2 V to 5 V regulation
Efficiency	90% at 12 V_IN/5 V_OUT/1 A - achieved via low R_DS(on) and optimized Bi-CMOS process
Standby Current	≤80 µA - enables low-power sleep modes in battery-backed or energy-sensitive systems
Thermal Shutdown	160 °C with 40 °C hysteresis - prevents latch-up and allows safe recovery after overload

Pinout & Package

MFP8 (225mil) surface-mount package: 8-pin, 6.4 mm × 5.0 mm × 1.7 mm body, exposed pad not electrically connected, JEDEC MS-012 compatible.

Pin/Terminal	Circuit Role	Design Meaning
1: BOOT	Bootstrap capacitor connection	Drives high-side gate above VIN; requires 0.022 µF ceramic cap to SW with optional 100 Ω series resistor for noise control
2: VIN	Main power input	Accepts 4.5–18 V; requires ≥10 µF bulk capacitance to GND for stability and surge handling
3: SW	Power switch node	Connects to inductor and Schottky diode anode; swings from GND to VIN + V_reg; must avoid negative excursions beyond −0.4 V
4: GND	Power and signal ground	Common return for VIN, FB, COMP, SS, EN; requires low-impedance PCB plane for thermal and noise performance
5: FB	Feedback input	Senses output voltage via resistive divider; 10 nA bias current enables high-resistor-value networks
6: EN	Enable control	Active-high logic input; 1.25–1.85 V threshold; internal 93 kΩ pull-up enables open-circuit enable
7: COMP	Loop compensation	Connects external RC network to stabilize feedback loop; directly interfaces error amplifier output
8: SS	Soft-start timing	10 µA internal current source charges external capacitor; sets ramp time per C_SS = 10 µA × T_ss / 0.8 V

Key Features

Feature	Design Value
Integrated 0.2 Ω High-Side FET	Reduces external component count and conduction losses; eliminates need for external high-side driver
Current-Mode Control	Provides inherent cycle-by-cycle current limiting and improves line/load transient response without slope compensation
Pulse-by-Pulse Over-Current Protection	Detects and limits peak inductor current per switching cycle (2.5–5.9 A range), preventing magnetic saturation and FET failure
Thermal Shutdown with Hysteresis	Shuts down at 160 °C junction temperature and re-enables only after cooling to 120 °C, avoiding oscillatory tripping under sustained overload
Adjustable Soft-Start	External capacitor on SS pin controls output voltage ramp time, reducing inrush current and stress on input capacitors and downstream circuitry

Applications

Industrial PLC I/O Module Power	Automotive Body Control Unit (BCU)
Use Scenario: Powering isolated 3.3 V logic rails and sensor interfaces in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Primary step-down regulator converting 12–24 V field bus to regulated 3.3 V for microcontrollers and digital isolators. Use Value: High efficiency (90% at 1 A) minimizes heat buildup in sealed enclosures; MFP8 footprint saves board area versus discrete solutions.	Use Scenario: Generating 5 V supply for CAN transceivers and door module microcontrollers in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Compact, robust buck converter operating across wide input range (4.5–18 V) including cold-crank and load-dump conditions. Use Value: Built-in over-current and thermal protection ensures reliability during short-circuited window motor or lamp loads.
Point-of-Load Converter for FPGA Core	Smart Home Hub Power Management
Use Scenario: Delivering 1.2 V at up to 2 A to FPGA core logic in space-constrained edge AI gateways. IC Role / Device Role / Timing Role: High-current, low-noise point-of-load regulator with precise 0.8 V reference and tight output tolerance. Use Value: Adjustable soft-start prevents FPGA configuration errors due to excessive inrush; current-mode control maintains regulation during dynamic core loading.	Use Scenario: Providing clean, efficient 3.3 V rail for Wi-Fi/BLE SoCs and touch controllers in battery-assisted smart thermostats. IC Role / Device Role / Timing Role: Low-quiescent standby regulator enabling <80 µA system sleep current while retaining fast wake-up capability. Use Value: Standby mode extends battery life; compact MFP8 package fits within tight mechanical envelopes of consumer IoT enclosures.

Industrial PLC I/O Module Power

Automotive Body Control Unit (BCU)

Use Scenario: Powering isolated 3.3 V logic rails and sensor interfaces in DIN-rail mounted programmable logic controllers.

IC Role / Device Role / Timing Role: Primary step-down regulator converting 12–24 V field bus to regulated 3.3 V for microcontrollers and digital isolators.

Use Value: High efficiency (90% at 1 A) minimizes heat buildup in sealed enclosures; MFP8 footprint saves board area versus discrete solutions.

Use Scenario: Generating 5 V supply for CAN transceivers and door module microcontrollers in 12 V vehicle electrical systems.

IC Role / Device Role / Timing Role: Compact, robust buck converter operating across wide input range (4.5–18 V) including cold-crank and load-dump conditions.

Use Value: Built-in over-current and thermal protection ensures reliability during short-circuited window motor or lamp loads.

Point-of-Load Converter for FPGA Core

Smart Home Hub Power Management

Use Scenario: Delivering 1.2 V at up to 2 A to FPGA core logic in space-constrained edge AI gateways.

IC Role / Device Role / Timing Role: High-current, low-noise point-of-load regulator with precise 0.8 V reference and tight output tolerance.

Use Value: Adjustable soft-start prevents FPGA configuration errors due to excessive inrush; current-mode control maintains regulation during dynamic core loading.

Use Scenario: Providing clean, efficient 3.3 V rail for Wi-Fi/BLE SoCs and touch controllers in battery-assisted smart thermostats.

IC Role / Device Role / Timing Role: Low-quiescent standby regulator enabling <80 µA system sleep current while retaining fast wake-up capability.

Use Value: Standby mode extends battery life; compact MFP8 package fits within tight mechanical envelopes of consumer IoT enclosures.

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Texas Instruments TPS54202DRCT	4.5–18 V input, 2 A, 500 kHz, integrated FET, 0.8 V ref, but uses voltage-mode control and lacks pulse-by-pulse OCP	Requires external compensation; less robust against short-circuit events than LV5803M-TE-L-E's current-mode protection	Prefer LV5803M-TE-L-E where fault immunity and thermal resilience in unattended industrial environments are critical
Rohm BD9G201EFJ-ME2	4.5–36 V input, 2 A, 340 kHz, 0.8 V ref, current-mode, but rated for −40°C to 125°C ambient vs. LV5803M-TE-L-E's −20°C to 80°C	Better suited for under-hood automotive use; LV5803M-TE-L-E targets cost-sensitive industrial and consumer applications	Select LV5803M-TE-L-E for applications within its 80°C top operating limit and where MFP8 footprint compatibility is required

Compared with TPS54202DRCT and BD9G201EFJ-ME2, the LV5803M-TE-L-E offers superior thermal protection hysteresis (40°C), lower standby current (≤80 µA), and MFP8 package compatibility with legacy SANYO designs - making it optimal for space-constrained, thermally managed industrial power rails where long-term reliability trumps extended temperature range.

Availability

LV5803M-TE-L-E is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and smart home hub power supplies requiring stable component supply, consistent MFP8 packaging, and proven thermal performance on standard FR-4 boards.

Supply support for LV5803M-TE-L-E 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 Co., Ltd. was a Japanese semiconductor manufacturer specializing in analog and power management ICs before its acquisition by ON Semiconductor in 2011; known for high-reliability, thermally optimized power solutions.

The LV5803M-TE-L-E belongs to SANYO's Bi-CMOS step-down regulator product line, designed specifically for compact, high-efficiency DC/DC conversion in industrial and consumer equipment where thermal management and protection robustness are prioritized over ultra-wide temperature range.

FAQ

What is the maximum allowable input voltage for the LV5803M-TE-L-E?

The LV5803M-TE-L-E has an absolute maximum input voltage rating of 20 V on the VIN pin. Operation above this level, even momentarily, risks permanent damage. Recommended operating range is 4.5 V to 18 V. Designers must account for transient spikes and inductive kickback - especially when using external inductors - and ensure the VIN pin never exceeds 20 V under any condition, including load dump or hot-swap events. The LV5803M-TE-L-E does not include internal overvoltage clamping.

How does the soft-start function work on the LV5803M-TE-L-E?

The LV5803M-TE-L-E implements soft-start via an internal 10 µA current source connected to the SS pin. An external capacitor (C_SS) is charged linearly from 0 V to the internal 0.8 V reference, controlling the ramp rate of the output voltage. The required capacitance is calculated as C_SS = (10 µA × T_ss) / 0.8 V - for example, 0.015 µF yields ~1.2 ms soft-start time. This prevents inrush current, reduces stress on input capacitors, and avoids false triggering of downstream undervoltage lockout circuits. The LV5803M-TE-L-E does not support adjustable start delay or voltage sequencing.

Can the LV5803M-TE-L-E be used in automotive applications?

The LV5803M-TE-L-E operates from −20°C to +80°C ambient and supports 4.5–18 V input, covering nominal 12 V automotive battery range. However, it is not AEC-Q100 qualified and was explicitly designated by SANYO for "standard applications" - excluding safety-critical automotive systems like engine control or ADAS. It may be used in non-safety automotive subsystems such as body control modules or infotainment power supplies, provided thermal derating is applied and full system-level validation (including load dump, cold crank, and EMC) is performed. The LV5803M-TE-L-E datasheet explicitly excludes use in "special applications" requiring extreme reliability.

What is the purpose of the BOOT pin and how should it be connected?

The BOOT pin on the LV5803M-TE-L-E provides gate drive voltage for the integrated high-side N-MOSFET. It must be connected via a 0.022 µF ceramic capacitor between BOOT and SW pins. A 100 Ω resistor in series with this capacitor is recommended to damp ringing and suppress noise coupling into the gate drive path. Improper BOOT connection - such as missing capacitor, wrong value, or excessive ESR - causes erratic switching, increased switching losses, or complete failure to regulate. The LV5803M-TE-L-E cannot operate without correct BOOT-to-SW capacitance, as the high-side FET would lack sufficient gate-source voltage.

Does the LV5803M-TE-L-E require external compensation components?

Yes, the LV5803M-TE-L-E requires external compensation components connected to the COMP pin to stabilize the feedback loop. As a current-mode controller, it typically uses a Type II compensation network - one capacitor from COMP to GND and a series RC from COMP to FB - to set dominant pole and zero locations. Component values depend on output capacitor ESR, inductance, and desired phase margin. The LV5803M-TE-L-E datasheet provides design equations and sample values (e.g., 1500 pF and 10 kΩ) for common configurations. Skipping or mis-sizing these components results in instability, oscillation, or poor transient response.

LV5803M-TE-L-E Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: -

Package/Case:: 8-SOIC (0.173", 4.40mm Width)

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):: 4.5V

Voltage - Input (Max):: 18V

Voltage - Output (Min/Fixed):: 0.8V

Voltage - Output (Max):: 15.48V

Current - Output:: -

Frequency - Switching:: 330kHz

Synchronous Rectifier:: No

Operating Temperature:: -20°C ~ 80°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-MFP

LV5803M-TE-L-E FAQ

1.How can I place an order for LV5803M-TE-L-E through Aetrix?

Please submit a Request for Quotation (RFQ) for LV5803M-TE-L-E 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 LV5803M-TE-L-E reliable?

The price and inventory of LV5803M-TE-L-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LV5803M-TE-L-E is usually 5 days.

3.What payment methods are accepted for LV5803M-TE-L-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LV5803M-TE-L-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LV5803M-TE-L-E?

LV5803M-TE-L-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LV5803M-TE-L-E 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 LV5803M-TE-L-E?

For technical support, including LV5803M-TE-L-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LV5803M-TE-L-E requirements.

6.How does Aetrix verify that LV5803M-TE-L-E is sourced from the original manufacturer or authorized distributors?

All LV5803M-TE-L-E 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 LV5803M-TE-L-E meets industry standards.

7.What is the process for return or replacement of LV5803M-TE-L-E?

All LV5803M-TE-L-E units undergo pre-shipment inspection (PSI). If there is an issue with LV5803M-TE-L-E, 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 LV5803M-TE-L-E part is unused and in its original packaging.

Return procedure for LV5803M-TE-L-E:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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