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onsemi LV5990ML-TLM-H
- Part No.:
- LV5990ML-TLM-H
- Manufacturer:
- onsemi
- Package:
- -
- Datasheet:
-
LV5990ML-TLM-H.pdf
- Description:
- STEP-DOWN SWITCHING REGULATOR
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Inventory:139,000
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Product details
Overview
LV5990ML-TLM-H from SANYO Semiconductor is a 1-channel step-down DC-DC converter IC with integrated high-side P-channel MOSFET, designed for 4.5V–18V input and up to 3A output current. It operates at 360kHz fixed frequency, features 1.26V internal reference, HICCUP-mode overcurrent protection, and 90μA light-load quiescent current. Used in industrial power supplies and embedded system rails where compact, self-contained buck regulation is required.
For engineers reviewing the LV5990ML-TLM-H datasheet, pinout, applications, or equivalent options, key selection criteria include verified 3A peak current capability, Pch MOSFET integration eliminating external high-side switch, UVLO (3.4V turn-on), thermal shutdown (170°C), and PG pin with 1.1V threshold and 50mV hysteresis for reliable rail monitoring.
Technical Context
This Bi-CMOS buck controller integrates gate drive, error amplifier, PWM comparator, and HICCUP timer in a single chip. Its P-by-P overcurrent detection triggers cycle-by-cycle limiting, then transitions to latched or auto-retry HICCUP mode depending on C-HICCUP pin configuration-grounding it enables latch-off, while capacitor connection sets restart interval.
The error amplifier delivers 250μA/V gain with ±100nA bias current and drives COMP pin for external Type-II/III compensation. Soft-start is implemented via 2μA constant-current source into SS pin, and power-good logic asserts low when FB falls below 1.1V with 50mV hysteresis, sinking up to 5mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 4.5V to 18V - supports 5V, 12V, and 15V intermediate bus systems without pre-regulation |
| Output current max | 3A - sufficient for FPGA core rails, microcontroller subsystems, and sensor interface power |
| Switching frequency | 360kHz (typ) - balances EMI control and inductor size; fixed-frequency PWM avoids subharmonic instability |
| Reference voltage | 1.260V (typ) - sets output via FB divider; ±25mV tolerance enables ±2% output accuracy with standard resistors |
| Light-load IQ | 90μA - enables >90% efficiency at 10mA load, critical for always-on subsystems |
| UVLO threshold | 3.4V (typ) - prevents erratic startup during brownout; 0.5V hysteresis ensures clean enable/disable transition |
| Thermal shutdown | 170°C - protects against sustained overload or poor heatsinking; automatic recovery after cooldown |
Pinout & Package
LV5990ML-TLM-H is housed in MFP12SJ (225mil) surface-mount package: 12-pin, 6.4mm × 5.0mm footprint, 1.7mm max height, with exposed thermal pad (not electrically connected). Pin 1 is SW (high-side MOSFET drain); pin 12 is VIN. GND (pin 3) and thermal pad must be soldered to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | High-side Pch MOSFET drain | Connects to inductor and input capacitor; carries full switching current and high dv/dt; requires tight layout to minimize ringing |
| VIN (Pin 12) | Main supply input | Feeds internal bias and UVLO circuit; must be decoupled near pin with ≥10μF ceramic + bulk capacitor |
| GND (Pin 3) | Power and signal reference | Return path for all internal blocks; connects to thermal pad; must tie to low-impedance PCB ground plane |
| PDR (Pin 2) | Pch gate drive voltage source | Bypass capacitor between PDR and VIN sets gate drive strength; affects RON and switching loss |
| C-HICCUP (Pin 5) | HICCUP mode timing capacitor | Capacitor value sets retry interval; short to GND forces latch-off on overcurrent |
| SS (Pin 6) | Soft-start timing node | 2μA current charges external capacitor; controls output ramp rate to prevent inrush and overshoot |
| COMP (Pin 7) | Error amplifier output | Connects to RC network for loop compensation; determines stability margin and transient response |
| FB (Pin 8) | Feedback input | Monitors divided output voltage; IC regulates to maintain 1.26V at this pin |
| REF (Pin 9) | Internal reference output | 1.26V buffered reference; usable for auxiliary circuits or precision biasing |
| PG (Pin 10) | Power-good open-drain output | Sinks current when FB ≥ 1.1V; signals valid output; requires pull-up resistor to system rail |
| EN (Pin 11) | Enable control input | Active-high logic; 1.5V threshold allows direct MCU GPIO control without level shift |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Pch MOSFET driver | Eliminates need for external high-side switch and bootstrap circuitry; reduces BOM count and layout complexity |
| HICCUP-mode OCP | Prevents thermal runaway during sustained overload by cycling on/off; configurable latch-off via C-HICCUP-to-GND |
| Low-light-load IQ | 90μA consumption enables >85% efficiency at 10mA output, extending battery life in standby modes |
| Accurate 1.26V reference | ±25mV tolerance over temperature supports ±2% output regulation without trimming |
| Power-good with hysteresis | 50mV hysteresis prevents chatter near threshold; 5mA sink capability drives logic-level loads directly |
Applications
| Industrial PLC I/O Power | Automotive Body Control Module |
|---|---|
Use Scenario: Providing isolated 3.3V/5V rails for digital I/O expansion cards in programmable logic controllers. IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 3.3V @ 2A from 12V backplane; handles intermittent high-current solenoid actuation. Use Value: Integrated Pch MOSFET and 3A rating eliminate external switch; UVLO ensures clean startup during 12V bus dips; PG pin sequences downstream logic safely. | Use Scenario: Generating 5V supply for microcontroller, CAN transceiver, and sensor interfaces in body control units. IC Role / Device Role / Timing Role: Main 5V DC-DC converter operating from 9–16V automotive battery; withstands load dump and cold-crank conditions. Use Value: 4.5V–18V input range covers cold-crank (6.5V) to load dump (22V); 170°C TSD prevents failure during under-hood thermal stress. |
| Medical Diagnostic Sensor Hub | Smart Energy Meter Power |
Use Scenario: Powering low-noise analog front-ends and ADCs in portable ultrasound or ECG sensor modules. IC Role / Device Role / Timing Role: Secondary regulated rail supplying precision analog circuitry; operates in light-load mode during sleep cycles. Use Value: 90μA quiescent current extends battery runtime; 1.26V reference enables accurate sensor biasing; low EMI 360kHz operation minimizes noise coupling. | Use Scenario: Delivering 3.3V for metrology SoC, RTC, and wireless communication ICs in AMI smart meters. IC Role / Device Role / Timing Role: Always-on buck converter supporting real-time clock and wake-on-event functionality during grid outage. Use Value: 1μA standby current (EN < 0.3V) enables multi-year battery backup; PG pin confirms rail validity before initiating metering sequence. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2315DJ-LF-Z | Higher 3.5A current rating; 500kHz switching; no integrated REF pin; different pinout | Requires external reference for auxiliary bias; better suited for space-constrained designs needing higher frequency | Select MP2315DJ-LF-Z when board area is limited and 500kHz operation improves filter size; verify EN threshold and PG behavior match system logic levels. |
| TPS54331DR | 3A current; 570kHz freq; external N-ch MOSFET required; no HICCUP mode (only cycle-by-cycle OCP) | Lacks latch-off option; needs external high-side driver and bootstrap components; wider input range (3.5–28V) | Choose TPS54331DR for higher input voltage flexibility and tighter output tolerance; add discrete latch circuit if HICCUP latch-off is mandatory. |
Compared with LV5990ML-TLM-H, MP2315DJ-LF-Z offers higher frequency and current but removes the buffered reference and alters pin compatibility, while TPS54331DR provides broader input range and precision but increases component count and lacks configurable HICCUP behavior-making LV5990ML-TLM-H optimal for cost-sensitive, thermally constrained, self-contained buck designs.
Availability
LV5990ML-TLM-H is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and portable medical instrumentation requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for LV5990ML-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 management ICs, later integrated into ON Semiconductor in 2013.
The LV5990ML-TLM-H belongs to SANYO's LV59xx series of integrated buck regulators, engineered for compact, high-efficiency point-of-load conversion in space- and thermal-constrained industrial and automotive applications.
FAQ
What is the maximum output current capability of the LV5990ML-TLM-H?
The LV5990ML-TLM-H supports up to 3A continuous output current under recommended operating conditions (Ta = 25°C, proper PCB thermal design). Peak current limit is specified at 4.7A (typ), enabling robust handling of transient loads. Derating is required above 70°C ambient; allowable power dissipation drops to 1.05W on the specified 40×30mm board.
How does the C-HICCUP pin affect overcurrent protection behavior in LV5990ML-TLM-H?
The C-HICCUP pin on LV5990ML-TLM-H configures the overcurrent response: connecting it to GND forces latch-off upon first overcurrent event, while adding a capacitor sets the HICCUP retry interval (15-cycle timer). This dual-mode protection prevents thermal damage during sustained faults while allowing recovery from momentary surges-critical for reliability in unattended equipment.
Can LV5990ML-TLM-H operate with an input voltage as low as 4.5V and still regulate correctly?
Yes, LV5990ML-TLM-H is fully specified for 4.5V minimum input voltage. Its UVLO releases at 3.4V (typ), ensuring stable startup even during cold-crank events down to ~6.5V in automotive systems. At 4.5V input, the device maintains regulation across its full output range (e.g., 3.3V, 5V) provided the output voltage is ≤ VIN − (RON × IOUT), respecting dropout constraints of the integrated Pch MOSFET.
What is the function of the REF pin on LV5990ML-TLM-H, and can it be left unconnected?
The REF pin on LV5990ML-TLM-H outputs a buffered 1.26V reference voltage usable for external circuit biasing or precision feedback scaling. It is not required for basic operation and may be left floating if unused; however, connecting a 100nF bypass capacitor improves noise immunity. Do not load REF beyond 1mA to avoid affecting internal reference accuracy or regulation stability.
Does LV5990ML-TLM-H support adjustable output voltage, and how is it set?
Yes, LV5990ML-TLM-H supports adjustable output voltage via the FB pin. A resistor divider from VOUT to GND sets the feedback voltage to 1.26V; output voltage is calculated as VOUT = 1.26V × (1 + R1/R2), where R1 connects to VOUT and R2 to GND. Standard 1% resistors achieve ±2% output tolerance; COMP pin compensation must be tuned per output voltage and load condition.
LV5990ML-TLM-H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
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- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- -
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LV5990ML-TLM-H FAQ
1.How can I place an order for LV5990ML-TLM-H through Aetrix?
Please submit a Request for Quotation (RFQ) for LV5990ML-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 LV5990ML-TLM-H reliable?
The price and inventory of LV5990ML-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 LV5990ML-TLM-H is usually 5 days.
3.What payment methods are accepted for LV5990ML-TLM-H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LV5990ML-TLM-H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LV5990ML-TLM-H?
LV5990ML-TLM-H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LV5990ML-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 LV5990ML-TLM-H?
For technical support, including LV5990ML-TLM-H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LV5990ML-TLM-H requirements.
6.How does Aetrix verify that LV5990ML-TLM-H is sourced from the original manufacturer or authorized distributors?
All LV5990ML-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 LV5990ML-TLM-H meets industry standards.
7.What is the process for return or replacement of LV5990ML-TLM-H?
All LV5990ML-TLM-H units undergo pre-shipment inspection (PSI). If there is an issue with LV5990ML-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 LV5990ML-TLM-H part is unused and in its original packaging.
Return procedure for LV5990ML-TLM-H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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