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onsemi LV5990M-TLM-H
- Part No.:
- LV5990M-TLM-H
- Manufacturer:
- onsemi
- Package:
- 12-LSOP (0.173", 4.40mm Width)
- Datasheet:
-
LV5990M-TLM-H.pdf
- Description:
- IC REG BUCK ADJ 3A 12MFPSJ
- Quantity:
- Payment:
- Shipping:
Inventory:4,731
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Product details
Overview
LV5990M-TLM-H from SANYO Semiconductor is a 1-channel step-down DC-DC converter IC with integrated high-side P-channel MOSFET, operating from 4.5 V to 18 V input, delivering up to 3 A output current, featuring 360 kHz fixed-frequency PWM control, 1.26 V internal reference, and thermal shutdown at 170 °C - used in industrial power supplies and embedded system rails.
For engineers reviewing the LV5990M-TLM-H datasheet, pinout, applications, or equivalent options, key selection criteria include light-load quiescent current (≤90 μA), HICCUP-mode overcurrent protection, UVLO thresholds (3.4 V turn-on), soft-start programmability via external capacitor, and PG output with 50 mV hysteresis.
Technical Context
The LV5990M-TLM-H implements a Bi-CMOS synchronous buck controller architecture with internal Pch MOSFET drive, error amplifier, PWM comparator, and dedicated HICCUP timer circuitry. It integrates UVLO (3.4 V release), thermal shutdown (170 °C), and P-by-P overcurrent detection with automatic recovery or latch-off mode depending on C-HICCUP pin configuration.
Its feedback loop uses a 1.26 V precision reference and supports external resistor-divider programming of output voltage; compensation is applied via the COMP pin with a single-pole network. The oscillator operates at 360 kHz ±17%, enabling compact external inductor/capacitor sizing while maintaining stable regulation across 4.5–18 V input range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 18 V - supports 5 V, 12 V, and 15 V industrial bus rails without pre-regulation. |
| Output Current Max | 3 A - sufficient for powering microcontrollers, FPGAs, and peripheral ICs in embedded systems. |
| Switching Frequency | 360 kHz (typ) - balances efficiency and EMI with standard off-the-shelf inductors (e.g., 4.7 µH). |
| Reference Voltage | 1.260 V (typ) - sets output accuracy; FB pin regulates to this value via external resistor divider. |
| Light-Load Current | ≤90 µA - enables low-power standby modes in battery-backed or energy-sensitive applications. |
| UVLO Threshold | 3.4 V (release), 2.9 V (lock) - prevents erratic startup/shutdown during brown-out conditions. |
| Thermal Shutdown | 170 °C - protects against sustained overload or poor heatsinking in enclosed enclosures. |
Pinout & Package
LV5990M-TLM-H is housed in SANYO's MFP12SJ (225 mil) surface-mount package - 12-pin, 5.0 mm × 4.4 mm body, 0.63 mm pitch, thermally enhanced with exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: SW | High-side Pch MOSFET drain | Switch node connecting to inductor; carries pulsed high-current switching waveform. |
| 2: PDR | Pch gate drive supply | Bypass capacitor required between PDR and VIN to stabilize gate drive voltage during switching. |
| 3: GND | Analog/digital ground reference | Common return path for error amp, bias, and power sections; must be low-impedance. |
| 4: NC | No connect | Internally unconnected; leave floating or grounded per layout best practice. |
| 5: C-HICCUP | HICCUP mode timing capacitor | Capacitor here sets restart interval after overcurrent; shorting to GND forces latch-off. |
| 6: SS | Soft-start capacitor terminal | ~2 µA current charges external cap to ramp output voltage linearly at startup. |
| 7: COMP | Error amplifier output | Connect RC network to GND for loop compensation; determines stability and transient response. |
| 8: FB | Feedback voltage sense | Regulates output by holding at 1.26 V; voltage divider from VOUT sets target output. |
| 9: REF | Internal reference output | 1.26 V buffered reference; usable as precision bias source for external circuits. |
| 10: PG | Power-good open-drain output | Asserts low when FB ≥ 1.1 V ±50 mV; signals valid regulated output to downstream logic. |
| 11: EN | Enable input | Active-high; IC starts when EN ≥ 1.5 V, shuts down when EN ≤ 0.3 V (1 µA leakage). |
| 12: VIN | Main input supply | Primary power input; monitored by UVLO; must be decoupled near pin with ≥10 µF ceramic. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Pch MOSFET driver | Eliminates need for external high-side gate driver; simplifies layout and reduces BOM count. |
| HICCUP-mode OCP with configurable reset | Prevents thermal runaway during sustained overload; C-HICCUP pin selects auto-retry or latch-off behavior. |
| Low IQ light-load operation | 90 µA typical quiescent current extends battery life or reduces no-load losses in always-on systems. |
| Programmable soft-start | External capacitor on SS pin controls output ramp rate, preventing inrush current into bulk capacitance. |
| Accurate power-good monitoring | PG output provides ±50 mV hysteresis and 5 mA sink capability for reliable system sequencing. |
Applications
| Industrial PLC I/O Power Rail | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Providing stable 3.3 V or 5 V rail for digital I/O banks in programmable logic controllers under variable 12 V/24 V supply. IC Role / Device Role / Timing Role: Primary step-down regulator with built-in MOSFET, handling load transients up to 3 A during solenoid actuation. Use Value: UVLO and thermal shutdown ensure safe operation during bus undervoltage or ambient temperature spikes up to 85 °C. | Use Scenario: Generating 5 V for microcontroller, CAN transceiver, and sensor interface in non-safety-critical automotive body electronics. IC Role / Device Role / Timing Role: Main DC-DC converter supplying core logic voltage; EN pin enables controlled power-up sequencing with vehicle ignition signal. Use Value: 360 kHz switching allows small magnetics; PG output synchronizes firmware boot with valid supply presence. |
| Embedded Network Gateway | Point-of-Sale Terminal Power Supply |
Use Scenario: Delivering 3.3 V to ARM-based gateway SoC and Ethernet PHY under wide-input 9–18 V field power. IC Role / Device Role / Timing Role: High-efficiency buck regulator with soft-start and feedback compensation for dynamic load changes. Use Value: 1.26 V reference and COMP pin allow precise output tuning and robust loop stability across temperature. | Use Scenario: Powering display controller, keypad MCU, and flash memory in retail terminals using 12 V wall adapter input. IC Role / Device Role / Timing Role: Primary voltage regulator with latch-off OCP to prevent damage during accidental short-circuit on USB peripherals. Use Value: C-HICCUP pin tied to GND ensures permanent shutdown on fault - eliminating risk of repeated hot-plug cycling. |
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 |
|---|---|---|---|
| Texas Instruments TPS54302DDA | 3.5 V–28 V input, 3 A, 500 kHz, integrated N-ch MOSFETs; requires external bootstrap capacitor. | Supports higher VIN and faster switching; lacks latch-off OCP mode and REF output. | Choose for wider input range and higher frequency; avoid if REF or latch-off OCP are required. |
| Rohm BD9G341AEFJ-M | 4.5 V–36 V input, 3 A, 340 kHz, integrated P-ch high-side switch; includes spread-spectrum mode. | Higher max VIN and EMI reduction feature; no C-HICCUP pin or dedicated latch-off option. | Prefer for automotive 24 V systems or noise-sensitive environments; not drop-in due to different pinout and protection logic. |
Compared with TPS54302DDA and BD9G341AEFJ-M, the LV5990M-TLM-H uniquely combines latch-off OCP via C-HICCUP grounding, buffered 1.26 V REF output, and Bi-CMOS low-IQ design - making it optimal for cost-sensitive industrial rails where fault containment and analog reference sharing matter.
Availability
LV5990M-TLM-H is available at Aetrix Electronics and suitable for industrial automation, embedded networking, and point-of-sale equipment requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature.
Supply support for LV5990M-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 before its acquisition by ON Semiconductor in 2011; known for high-reliability DC-DC solutions.
The LV5990M-TLM-H belongs to SANYO's legacy Bi-CMOS step-down converter family designed for cost-effective, thermally robust industrial power rails with minimal external components.
FAQ
What is the maximum recommended input voltage for LV5990M-TLM-H?
The LV5990M-TLM-H has an absolute maximum input voltage rating of 22 V on the VIN pin. However, the recommended operating range is strictly 4.5 V to 18 V per the datasheet. Exceeding 18 V may trigger UVLO lockout or cause reliability degradation, even if below the 22 V absolute limit. Always maintain input within the recommended range for guaranteed operation of LV5990M-TLM-H.
How does the C-HICCUP pin affect overcurrent protection behavior in LV5990M-TLM-H?
When a capacitor is connected to the C-HICCUP pin, the LV5990M-TLM-H enters auto-retry HICCUP mode after overcurrent detection - restarting after a delay set by the capacitor value. If C-HICCUP is tied directly to GND, the LV5990M-TLM-H latches off permanently upon first overcurrent event until EN is cycled. This dual-mode flexibility allows designers to choose between fault containment and self-recovery based on system safety requirements.
Can LV5990M-TLM-H be used to generate a 3.3 V output, and what external components are required?
Yes, LV5990M-TLM-H can generate 3.3 V using the FB pin and a resistor divider. With VREF = 1.26 V, use R1 = 10 kΩ and R2 ≈ 6.2 kΩ (standard 1% values) to set VOUT = 1.26 × (1 + R1/R2) ≈ 3.3 V. Required external components include input/output capacitors (≥10 µF ceramic each), power inductor (~4.7 µH, 5 A saturation), and optional soft-start capacitor on SS pin. The LV5990M-TLM-H does not require additional drivers or gate resistors.
What is the purpose of the REF pin on LV5990M-TLM-H, and can it be used externally?
The REF pin on LV5990M-TLM-H outputs a buffered, temperature-stable 1.26 V reference derived from the internal bandgap. It can be used externally as a precision bias voltage for ADC references, sensor excitation, or comparator thresholds - provided load current remains below 1 mA. Unlike the FB pin, REF is not part of the regulation loop and remains active even during shutdown, making it useful for auxiliary circuitry powered independently of the main output.
Does LV5990M-TLM-H support synchronization to an external clock?
No, LV5990M-TLM-H does not support external clock synchronization. Its oscillator is fixed at 360 kHz (±17%) and internally generated; there is no SYNC, CLKIN, or frequency-adjust pin. For applications requiring synchronized switching (e.g., multi-rail systems to avoid beat frequencies), an alternative controller with sync capability - such as the TPS54302DDA - must be selected instead of LV5990M-TLM-H.
LV5990M-TLM-H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 12-LSOP (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):
- 1.26V
- Voltage - Output (Max):
- 17.1V
- Current - Output:
- 3A
- Frequency - Switching:
- 360kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-MFPSJ
LV5990M-TLM-H FAQ
1.How can I place an order for LV5990M-TLM-H through Aetrix?
Please submit a Request for Quotation (RFQ) for LV5990M-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 LV5990M-TLM-H reliable?
The price and inventory of LV5990M-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 LV5990M-TLM-H is usually 5 days.
3.What payment methods are accepted for LV5990M-TLM-H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LV5990M-TLM-H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LV5990M-TLM-H?
LV5990M-TLM-H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LV5990M-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 LV5990M-TLM-H?
For technical support, including LV5990M-TLM-H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LV5990M-TLM-H requirements.
6.How does Aetrix verify that LV5990M-TLM-H is sourced from the original manufacturer or authorized distributors?
All LV5990M-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 LV5990M-TLM-H meets industry standards.
7.What is the process for return or replacement of LV5990M-TLM-H?
All LV5990M-TLM-H units undergo pre-shipment inspection (PSI). If there is an issue with LV5990M-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 LV5990M-TLM-H part is unused and in its original packaging.
Return procedure for LV5990M-TLM-H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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