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onsemi LV5813TT-TE-L-H
- Part No.:
- LV5813TT-TE-L-H
- Manufacturer:
- onsemi
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LV5813TT-TE-L-H.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,555
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Product details
Overview
LV5813TT-TE-L-H from SANYO Semiconductor (now ON Semiconductor) is a 1-channel current-mode step-down switching regulator IC with integrated 0.25Ω high-side MOSFET, supporting 1.5A output current, 4.75–18V input range, and fixed 370kHz switching frequency. It delivers 90% efficiency at 12VIN/5VOUT/1A and features soft-start, thermal shutdown, pulse-by-pulse over-current protection, and standby mode with ≤90μA quiescent current - used in LCD TV power rails and χDSL pre-regulators.
For engineers reviewing the LV5813TT-TE-L-H datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (MSOP8), confirmed functional parameters (0.8V reference, 370kHz oscillator, EN/SS/COMP/FB pin roles), and real-world design constraints including BOOT capacitor routing, thermal derating on specified PCB, and duty-cycle limits under load transients.
Technical Context
This Bi-CMOS DC/DC controller uses current-mode PWM control with slope compensation for stable loop response and simplified external compensation via the COMP pin. Its internal 0.25Ω high-side FET enables high-efficiency operation without external switch drivers, while the 0.8V precision reference and FB pin enable accurate output voltage setting via resistor dividers.
The IC integrates multiple protection mechanisms: pulse-by-pulse over-current detection with three current-limit thresholds (2.5–5.7A depending on VOUT), thermal shutdown at 160°C with 40°C hysteresis, and UVLO on VIN. Soft-start is implemented via internal 5μA current source charging an external capacitor on the SS pin, enabling controlled ramp-up of output voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.75V to 18V - supports wide-range industrial and consumer DC inputs including 12V rail systems and χDSL line-powered supplies. |
| Output Current Capability | 1.5A continuous - sufficient for powering core logic or display bias rails in LCD/PDP TVs and Blu-ray players. |
| Switching Frequency | 370kHz (typ) - balances EMI performance and inductor size; drops to 115kHz during short-circuit for improved fault handling. |
| Reference Voltage | 0.8V ±2% - enables precise output regulation (e.g., 3.3V via 27kΩ/10kΩ divider) across temperature and line variations. |
| High-Side RDS(on) | 0.25Ω - reduces conduction loss and improves full-load efficiency without requiring external MOSFETs or gate drivers. |
| Standby Current | ≤90μA - enables low-power system sleep modes in consumer electronics with minimal battery drain. |
| Thermal Shutdown Threshold | 160°C with 40°C hysteresis - prevents latch-up during overload or poor heatsinking; allows safe recovery after cooling. |
Pinout & Package
LV5813TT-TE-L-H is housed in an MSOP8 (150mil) package - 3.0mm × 3.0mm × 1.1mm body with 0.5mm pitch, optimized for compact consumer power designs. Thermal performance is rated at 0.85W on a specified 46.4mm × 31.8mm × 1.7mm glass-epoxy board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: BOOT | Bootstrap capacitor connection | Connects 0.022μF capacitor between BOOT and SW to sustain gate drive for high-side FET; series 100Ω resistor suppresses noise and protects SW pin rating. |
| 2: VIN | Main input supply | Accepts 4.75–18V; requires ≥10μF bulk capacitance to GND for stability and transient suppression. |
| 3: SW | Power switch node | Drives external LC filter; connects directly to inductor and Schottky diode cathode; voltage swings from GND to VIN + VBOOT. |
| 4: GND | Analog/digital ground reference | Common return for internal regulators, feedback, and compensation; must be low-impedance and tied to power ground near SW pin. |
| 5: FB | Feedback input | Senses output voltage via resistor divider; internal 0.8V reference sets VOUT = 0.8V × (1 + R1/R3); bias current ≤200nA minimizes divider error. |
| 6: COMP | Loop compensation node | Connects external RC network to stabilize control loop; placement near FB and GND critical for noise immunity and phase margin. |
| 7: EN | Enable control input | Active-high logic input; thresholds Venh = 1.8V (typ), Venl = 1.35V (typ); pulls device into <90μA standby when low. |
| 8: SS | Soft-start timing input | Charged by internal 5μA current source; external capacitor sets ramp time: TSS = (CSS × 0.8V)/5μA (e.g., 0.015μF → 2.4ms). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 0.25Ω high-side MOSFET | Eliminates need for external switch and driver, reducing BOM count and layout complexity in space-constrained designs. |
| Current-mode PWM control | Provides fast load transient response and inherent cycle-by-cycle current limiting without external sensing resistors. |
| Three-tier over-current protection | Differentiates peak current limits (2.5A/2.8A/3.1A) based on output voltage, optimizing fault coverage across 1.2V–5V applications. |
| Thermal shutdown with hysteresis | 160°C trip with 40°C hysteresis ensures reliable recovery after overheating without oscillation or latch-up. |
| Adjustable soft-start via SS pin | Enables user-defined output voltage ramp rate using single capacitor, preventing inrush current and downstream supply sequencing issues. |
Applications
| LCD TV Power Rail | χDSL Pre-regulator |
|---|---|
Use Scenario: Supplies 3.3V or 5V logic rails for mainboard SoC, TCON, and interface ICs in flat-panel displays. IC Role / Device Role / Timing Role: Primary step-down regulator converting 12V DC bus to stable low-voltage system rails. Use Value: High efficiency (90% @1A) minimizes heat buildup inside sealed TV enclosures; MSOP8 footprint saves board area versus SOIC alternatives. |
Use Scenario: Generates clean 5V intermediate supply from higher-voltage DSL line-powered input before LDO post-regulation. IC Role / Device Role / Timing Role: Pre-regulator stage delivering regulated input to downstream low-noise linear regulators. Use Value: Wide 4.75–18V input range accommodates fluctuating DSL line-derived supplies; 370kHz switching avoids interference with ADSL/VDSL bands. |
| Blu-ray Disc Player Logic Supply | PDP TV Scan Driver Bias |
Use Scenario: Powers microcontroller, servo motor drivers, and optical pickup circuitry in optical disc recorders. IC Role / Device Role / Timing Role: Main DC/DC converter supplying 1.2V/3.3V/5V rails with tight load regulation and fast transient response. Use Value: Load regulation ≤5mV/A ensures stable MCU clocking and analog signal integrity during disc spin-up and laser activation. |
Use Scenario: Provides adjustable bias voltage (via FB divider) to sustain PDP panel scan electrode drivers during high-current addressing pulses. IC Role / Device Role / Timing Role: High-current, thermally robust step-down regulator operating in intermittent high-duty cycles. Use Value: Thermal shutdown with 40°C hysteresis prevents thermal runaway during sustained panel refresh; 85% max duty cycle supports high-VOUT configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down switching regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2307DN-LF-Z (Monolithic Power) | 3A rated, 500kHz switching, no integrated BOOT resistor; requires external bootstrap diode/capacitor. | Better suited for higher-current applications but demands more external components and careful layout for BOOT reliability. | Select MP2307DN-LF-Z only if >1.5A output or higher frequency is required; LV5813TT-TE-L-H offers simpler implementation for ≤1.5A consumer loads. |
| TPS54202DRCT (Texas Instruments) | 2A rated, 400–2000kHz programmable frequency, integrated soft-start and power-good, but no thermal hysteresis spec. | Offers greater flexibility in EMI tuning and system monitoring, yet lacks guaranteed thermal hysteresis behavior per datasheet. | Choose TPS54202DRCT for designs needing PG signal or frequency agility; LV5813TT-TE-L-H provides proven thermal recovery behavior in cost-sensitive fixed-frequency applications. |
Compared with MP2307DN-LF-Z and TPS54202DRCT, LV5813TT-TE-L-H delivers a balanced trade-off: integrated high-side FET and BOOT management reduce component count, its fixed 370kHz frequency simplifies EMI filtering, and its documented 40°C thermal hysteresis ensures predictable recovery-making it ideal for volume consumer power stages where layout simplicity and thermal predictability outweigh programmability needs.
Availability
LV5813TT-TE-L-H is available at Aetrix Electronics and suitable for LCD TV, χDSL equipment, and Blu-ray Disc player designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LV5813TT-TE-L-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 a Japanese semiconductor manufacturer specializing in analog and power ICs, acquired by ON Semiconductor in 2011. Its legacy products emphasize high-reliability, cost-effective integration for mass-market consumer electronics.
The LV5813TT-TE-L-H belongs to SANYO's Bi-CMOS step-down regulator family designed specifically for compact, efficient DC/DC conversion in flat-panel displays, optical storage, and broadband communication equipment - prioritizing thermal robustness, ease of compensation, and minimal external component count.
FAQ
What is the maximum allowable input voltage for LV5813TT-TE-L-H?
The absolute maximum input voltage for LV5813TT-TE-L-H is 20V, as specified in the Absolute Maximum Ratings table. Operation above 18V violates recommended conditions and risks permanent damage due to exceeding internal voltage tolerances on the VIN and BOOT pins. For reliable long-term use, maintain VIN within 4.75–18V per the Recommended Operating Conditions.
How does the LV5813TT-TE-L-H implement over-current protection?
The LV5813TT-TE-L-H uses pulse-by-pulse over-current protection with three distinct current-limit thresholds (Icl1/Icl2/Icl3) that vary with output voltage - e.g., 5.1A max at 5VOUT, 5.4A at 3.3VOUT, and 5.7A at 1.2VOUT. This adaptive scheme ensures robust fault coverage across common output voltages without sacrificing startup capability or light-load efficiency.
Can LV5813TT-TE-L-H operate with no external load?
LV5813TT-TE-L-H may experience boot strap voltage deficiency and intermittent operation at no load when VIN ≤12V, per design considerations in the datasheet. To ensure stable operation, add a minimum load (e.g., 500Ω from VOUT to GND) or use VIN >12V. This behavior is inherent to the bootstrap gate-drive architecture and is not a defect of the LV5813TT-TE-L-H itself.
What is the purpose of the 100Ω resistor (Rb) between BOOT and SW in LV5813TT-TE-L-H designs?
The 100Ω resistor (Rb) between BOOT and SW in LV5813TT-TE-L-H circuits suppresses high-frequency ringing and noise on the bootstrap node, protecting the SW pin from voltage overshoot beyond its 25V absolute maximum rating. It also improves EMI performance and stabilizes gate drive - a critical design element explicitly recommended in the LV5813TT-TE-L-H application notes.
Does LV5813TT-TE-L-H require external compensation components?
Yes, LV5813TT-TE-L-H requires external compensation components connected to the COMP pin to stabilize the control loop. A typical network includes a series RC (e.g., 10kΩ + 1nF) from COMP to GND and a capacitor (e.g., 100pF) from COMP to FB. The exact values depend on output voltage, inductor value, and desired phase margin - design guidance is provided in the LV5813TT-TE-L-H block diagram and application circuit sections.
LV5813TT-TE-L-H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm 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):
- 4.75V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 15.3V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 370kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -20°C ~ 80°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
LV5813TT-TE-L-H FAQ
1.How can I place an order for LV5813TT-TE-L-H through Aetrix?
Please submit a Request for Quotation (RFQ) for LV5813TT-TE-L-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 LV5813TT-TE-L-H reliable?
The price and inventory of LV5813TT-TE-L-H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LV5813TT-TE-L-H is usually 5 days.
3.What payment methods are accepted for LV5813TT-TE-L-H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LV5813TT-TE-L-H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LV5813TT-TE-L-H?
LV5813TT-TE-L-H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LV5813TT-TE-L-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 LV5813TT-TE-L-H?
For technical support, including LV5813TT-TE-L-H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LV5813TT-TE-L-H requirements.
6.How does Aetrix verify that LV5813TT-TE-L-H is sourced from the original manufacturer or authorized distributors?
All LV5813TT-TE-L-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 LV5813TT-TE-L-H meets industry standards.
7.What is the process for return or replacement of LV5813TT-TE-L-H?
All LV5813TT-TE-L-H units undergo pre-shipment inspection (PSI). If there is an issue with LV5813TT-TE-L-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 LV5813TT-TE-L-H part is unused and in its original packaging.
Return procedure for LV5813TT-TE-L-H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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