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onsemi LV5841M-TLM-H
- Part No.:
- LV5841M-TLM-H
- Manufacturer:
- onsemi
- Package:
- 8-SOIC (0.173", 4.40mm Width)
- Datasheet:
-
LV5841M-TLM-H.pdf
- Description:
- IC REG BUCK ADJ 4.5A 8MFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,054
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Product details
Overview
LV5841M-TLM-H from SANYO Semiconductor is a Bi-CMOS step-down switching regulator IC with integrated high-side MOSFET (60 mΩ RDS(on)), supporting 4.5 A output current, 5–18 V input range, and 0.85–0.8×VIN adjustable output voltage; used in industrial power supplies and embedded DC/DC conversion stages.
For engineers reviewing the LV5841M-TLM-H datasheet, pinout, applications, or equivalent options, key selection criteria include verified current-mode control architecture, thermal shutdown at 160°C, foldback overcurrent protection, soft-start time of 3.5 ms, and MFP8 package compatibility with standard 225-mil footprint layouts.
Technical Context
This device implements fixed-frequency current-mode control with oscillator frequency tunable from 350 kHz to 600 kHz, enabling stable loop response and simplified external compensation via the COMP pin. The internal 0.835 V reference and FB pin enable precise output regulation across line and load variations.
It integrates undervoltage lockout (UVLO) with startup threshold at 4.9 V and shutdown at 4.3 V, plus EN pin logic control (ON ≥2 V, OFF ≤0.6 V). Thermal shutdown activates at 160°C with 50°C hysteresis, and foldback current limiting reduces switching frequency under overload to limit inductor RMS current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5–18 V - supports 12 V nominal bus rails and wide industrial input transients |
| Max Output Current | 4.5 A - sustained delivery with integrated 60 mΩ high-side switch and thermal design margin |
| Feedback Reference Voltage | 0.835 V ±12 mV - sets output accuracy and enables resistor-divider-based VOUT programming |
| Switching Frequency | 350–600 kHz - balances EMI, inductor size, and efficiency for compact designs |
| Soft Start Time | 3.5 ms typical - prevents inrush current and stabilizes startup without external circuitry |
| Thermal Shutdown Threshold | 160°C with 50°C hysteresis - protects die during sustained overload or poor heatsinking |
| UVLO Thresholds | Start: 4.9 V, Stop: 4.3 V - ensures clean power sequencing on 5 V or 12 V inputs |
Pinout & Package
Package: MFP8 (225 mil), 8-pin molded flat package without exposed thermal pad; footprint compatible with JEDEC MS-012AC variant; 1.7 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No connection - must remain unconnected per datasheet; no internal bond or function |
| 2 | VIN | Main power input - connects to bulk input capacitor; UVLO sensing and internal bias generation source |
| 3 | AGND | Analog ground reference - common return for FB, COMP, and internal error amplifier; separate from power ground path |
| 4 | FB | Error amplifier inverting input - senses divided output voltage; regulates VOUT = 0.835 V × (1 + R1/R2) |
| 5 | COMP | Loop compensation node - connects external RC network to stabilize current-mode control loop |
| 6 | EN | Enable control input - TTL-compatible; ≥2 V enables operation, ≤0.6 V forces shutdown |
| 7, 8 | SW | Switch node - connects directly to inductor; carries full switching current and high dv/dt; requires tight layout |
Key Features
| Feature | Design Value |
|---|---|
| Integrated High-Side MOSFET | RDS(on) = 60 mΩ @ VIN = 12 V - eliminates external FET, reduces BOM count and layout complexity |
| Current-Mode Control | Single-loop stability with inherent cycle-by-cycle current limiting - simplifies compensation and improves transient response |
| Foldback Overcurrent Protection | Reduces switching frequency under overload - limits peak inductor current and average power dissipation |
| Internal 0.835 V Reference | ±12 mV tolerance over temperature - enables accurate, resistor-programmable output voltages from 0.85 V upward |
| Thermal Shutdown with Hysteresis | 160°C trip / 110°C recovery - prevents latch-up and allows safe auto-recovery after cooling |
Applications
| Industrial Motor Drive Power Supply | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Provides regulated 5 V or 3.3 V rail for microcontroller, CAN transceiver, and sensor interface in 12 V vehicle systems. IC Role / Device Role / Timing Role: Primary buck converter delivering stable low-noise DC power with fast load-step response. Use Value: Integrated 60 mΩ switch and current-mode control ensure >90% efficiency at 4 A load while meeting automotive ambient temperature requirements (−30°C to +85°C). | Use Scenario: Powers FPGA I/O banks and auxiliary logic in programmable logic controllers with variable input voltage. IC Role / Device Role / Timing Role: Fixed-frequency step-down regulator with programmable output and EN-controlled sequencing. Use Value: Soft-start (3.5 ms) prevents inrush into large downstream capacitance; UVLO thresholds align with 5 V system brownout detection. |
| Point-of-Load Converter for Embedded CPU Core | Smart Sensor Hub Power Management |
Use Scenario: Generates 1.2 V core supply for ARM Cortex-M7 MCU operating at up to 300 MHz. IC Role / Device Role / Timing Role: High-efficiency DC/DC regulator with precision feedback and thermal protection. Use Value: 0.835 V reference and FB pin enable ±1% output accuracy; thermal shutdown at 160°C safeguards silicon under sustained 4.5 A load. | Use Scenario: Supplies regulated 3.3 V to MEMS accelerometers, humidity sensors, and BLE radio subsystems. IC Role / Device Role / Timing Role: Compact, low-quiescent-power buck regulator with enable control for duty-cycled operation. Use Value: EN pin allows full shutdown (180 µA ISD) between sensor readings; MFP8 package fits space-constrained IoT node PCBs. |
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 | 4.5 A, 5–36 V input, 500 kHz fixed freq, 110 mΩ HS-FET, no foldback OCP | Wider VIN range but higher RDS(on); lacks foldback, uses hiccup OCP instead | Prefer when input exceeds 18 V; avoid if foldback current limiting is required for inductor safety |
| TPS54560BQDDARQ1 | 5.5 A, 3.5–60 V input, 100–2500 kHz adjustable freq, 72 mΩ HS-FET, thermal foldback | Higher voltage rating and adjustable frequency; automotive-grade AEC-Q100 qualified | Choose for automotive qualification or >18 V input; LV5841M-TLM-H remains optimal for cost-sensitive industrial 12 V systems |
Compared with MP2315DJ-LF-Z and TPS54560BQDDARQ1, LV5841M-TLM-H offers lower RDS(on), built-in foldback OCP, and tighter reference tolerance (±12 mV), making it preferable for thermally constrained 12 V applications where inductor current limiting and output accuracy are critical.
Availability
LV5841M-TLM-H is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, point-of-load converters, and smart sensor hubs requiring stable component supply and long-term production continuity.
Supply support for LV5841M-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 Co., Ltd. was a Japanese semiconductor manufacturer specializing in analog and power ICs before its acquisition by ON Semiconductor in 2011; known for high-reliability Bi-CMOS process technology.
The LV5841M-TLM-H belongs to SANYO's LV58xx series of integrated step-down regulators, designed specifically for space- and efficiency-constrained industrial and automotive power conversion where minimal external components and robust protection are essential.
FAQ
What is the maximum continuous output current supported by LV5841M-TLM-H?
The LV5841M-TLM-H supports a maximum continuous output current of 4.5 A under recommended operating conditions (TA = 25°C, specified PCB, VIN = 12 V). This rating assumes proper thermal management using the MFP8 package on a 31.0 mm × 34.0 mm × 1.7 mm glass-epoxy board. Derating applies above 85°C ambient or with reduced copper area.
Does LV5841M-TLM-H require an external MOSFET for operation?
No, LV5841M-TLM-H does not require an external MOSFET. It integrates a high-side N-channel MOSFET with 60 mΩ typical RDS(on) at VIN = 12 V. The SW pins (7 and 8) connect directly to the inductor, completing the buck topology with only external inductor, input/output capacitors, and feedback resistors needed.
What is the purpose of the NC pin (Pin 1) on LV5841M-TLM-H?
Pin 1 of LV5841M-TLM-H is designated NC (No Connection) and must remain unconnected. It has no internal bond wire or circuit function. Leaving it floating is required per the datasheet; soldering or routing to ground or any other net may cause unpredictable behavior or violate electrical specifications.
How does the foldback overcurrent protection work in LV5841M-TLM-H?
In LV5841M-TLM-H, foldback overcurrent protection reduces the switching frequency during overload, lowering average inductor current and power dissipation. Unlike hiccup or latch-off modes, this method maintains regulation attempt while limiting thermal stress. The foldback initiates when sensed current exceeds the limiter threshold (5.0 A at VIN = 5 V, 5.5 A at VIN = 12 V).
Can LV5841M-TLM-H be used with input voltages below 5 V?
No, LV5841M-TLM-H cannot operate reliably below 5 V input. Its absolute minimum recommended input voltage is 5 V, and UVLO disables operation when VIN drops to 4.3 V or less. Attempting to operate below 5 V violates the Recommended Operating Conditions and risks unstable regulation, premature shutdown, or undefined behavior in the internal Bi-CMOS circuitry.
LV5841M-TLM-H 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):
- 5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.85V
- Voltage - Output (Max):
- 14.4V
- Current - Output:
- 4.5A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -30°C ~ 80°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MFP
LV5841M-TLM-H FAQ
1.How can I place an order for LV5841M-TLM-H through Aetrix?
Please submit a Request for Quotation (RFQ) for LV5841M-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 LV5841M-TLM-H reliable?
The price and inventory of LV5841M-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 LV5841M-TLM-H is usually 5 days.
3.What payment methods are accepted for LV5841M-TLM-H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LV5841M-TLM-H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LV5841M-TLM-H?
LV5841M-TLM-H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LV5841M-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 LV5841M-TLM-H?
For technical support, including LV5841M-TLM-H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LV5841M-TLM-H requirements.
6.How does Aetrix verify that LV5841M-TLM-H is sourced from the original manufacturer or authorized distributors?
All LV5841M-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 LV5841M-TLM-H meets industry standards.
7.What is the process for return or replacement of LV5841M-TLM-H?
All LV5841M-TLM-H units undergo pre-shipment inspection (PSI). If there is an issue with LV5841M-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 LV5841M-TLM-H part is unused and in its original packaging.
Return procedure for LV5841M-TLM-H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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