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Texas Instruments LM2830ZQMFX/NOPB
- Part No.:
- LM2830ZQMFX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM2830ZQMFX/NOPB.pdf
- Description:
- IC REG BUCK ADJ 1A SOT23-5
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LM2830ZQMFX/NOPB from Texas Instruments is a high-frequency, current-mode PWM step-down DC-DC regulator IC in a 5-pin SOT-23 package, delivering 1.0-A output current with 3.0-MHz fixed switching frequency, 0.6-V internal reference (±2%), and 130-mΩ PMOS switch. It regulates 3.3-V output from 5-V input in compact local power supplies for USB-powered devices and set-top boxes.
For engineers reviewing the LM2830ZQMFX/NOPB datasheet, LM2830ZQMFX/NOPB pinout, LM2830ZQMFX/NOPB application, or LM2830ZQMFX/NOPB equivalent, key selection criteria include its 3.0-MHz operation enabling ultra-small magnetics, internal soft-start limiting inrush, thermal shutdown at 165°C, undervoltage lockout with 430-mV hysteresis, and automotive-grade AEC-Q100 qualification for industrial embedded designs.
Technical Context
The LM2830ZQMFX/NOPB implements constant-frequency current-mode control with an internal 0.6-V reference and artificial ramp compensation, enabling stable regulation without external loop compensation. Its 3.0-MHz oscillator supports sub-1-µH inductors and ceramic capacitors while maintaining >90% efficiency at 1-A load across 3.0–5.5-V input range.
Functional modes include active regulation (EN ≥1.8 V), shutdown (EN <0.4 V, IQ = 30 nA), and protection-triggered states: overcurrent shutdown (cycle-by-cycle limit at 1.75-A typical), overvoltage shutdown (FB >1.15×VREF), and thermal shutdown (TJ >165°C). The 5-pin SOT-23 layout integrates VIN, SW, GND, FB, and EN with dedicated power/ground routing paths to minimize noise coupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 3.0 MHz (fixed); enables use of ≤2.2-µH inductors and 22-µF ceramic capacitors for minimal PCB footprint |
| Output Current | 1.0 A continuous; supports core power in HDDs and USB peripherals without external current boosting |
| Input Voltage Range | 3.0 V to 5.5 V; compatible with single-cell Li-ion, USB 5-V, and regulated 3.3-V rails |
| Feedback Reference | 0.600 V ±2%; sets output voltage via resistor divider (e.g., 3.3 V = R1/R2 = 4.5) with line regulation of 0.02%/V |
| PMOS Switch RDS(on) | 130 mΩ (SOT-23); limits conduction loss to <130 mW at 1-A load, supporting >92% peak efficiency |
| Quiescent Current | 4.3–6.5 mA (active), 30 nA (shutdown); enables battery-backed systems to maintain >1-year shelf life |
| UVLO Threshold | 2.73 V (rising), 2.3 V (falling) with 430-mV hysteresis; prevents erratic startup during brownout conditions |
Pinout & Package
LM2830ZQMFX/NOPB uses a 5-pin SOT-23 package (2.90 mm × 1.60 mm) with exposed pad not present; thermal path relies on PCB copper area under GND pin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | Power switch output | Connects to inductor and catch diode anode; swings between VIN and –0.3 V during operation; requires low-inductance routing |
| GND (Pin 2) | Signal and power ground | Primary return path for feedback divider and internal circuitry; place bottom resistor of FB divider adjacent to this pin |
| FB (Pin 3) | Voltage feedback input | Senses output via resistor divider; bias current <100 nA allows high-value resistors (e.g., 15 kΩ/15 kΩ) minimizing quiescent loss |
| EN (Pin 4) | Enable control input | Active-high logic interface; threshold 1.8 V (min), 0.4 V (max shutdown); must not float or exceed VIN + 0.3 V |
| VIN (Pin 5) | Input supply voltage | Accepts 3.0–5.5 V; decoupled by 22-µF ceramic capacitor placed within 3 mm of this pin and GND |
Key Features
| Feature | Design Value |
|---|---|
| Internal soft-start | Ramps reference from 0 V to 0.6 V over ~600 µs, limiting inrush current to <1.5× IOUT during startup |
| Output overvoltage protection | Shuts down SW when FB exceeds 1.15×VREF (0.69 V), preventing damage to downstream 3.3-V logic |
| Cycle-by-cycle current limit | Trips at 1.75-A typical switch current, protecting against short-circuit loads without external sensing |
| Thermal shutdown | Disables switching at 165°C junction temperature; resumes at ~150°C, preventing permanent IC damage |
| High-frequency operation | 3.0-MHz fixed frequency reduces EMI fundamental to 3 MHz and allows smaller filter components than 500-kHz alternatives |
Applications
| Local 5-V to Vcore Step-Down Converters | Core Power in HDDs |
|---|---|
Use Scenario: Regulating 5-V USB bus to 3.3-V or 1.2-V core voltage for microcontrollers and FPGAs in portable instrumentation. IC Role / Device Role / Timing Role: Primary buck regulator providing tightly regulated, low-noise DC power with fast transient response to handle CPU burst loads. Use Value: 3.0-MHz switching enables <10-mm² total solution size including inductor and capacitors, critical for space-constrained handheld devices. | Use Scenario: Supplying 1.2-V/1.0-A core voltage to HDD controller ASICs requiring stable rail during rapid spin-up and data access. IC Role / Device Role / Timing Role: High-efficiency step-down converter with internal current limit protecting against motor stall-induced overload. Use Value: 130-mΩ PMOS switch and 92% peak efficiency minimize thermal rise in sealed HDD enclosures, extending reliability. |
| Set-Top Boxes | USB Powered Devices |
Use Scenario: Generating 3.3-V logic supply from 5-V USB-C or wall adapter input in consumer media streamers with tight thermal budgets. IC Role / Device Role / Timing Role: Compact, low-quiescent-current DC-DC regulator supporting always-on HDMI-CEC functionality. Use Value: 30-nA shutdown current enables <1-µA system standby draw, meeting Energy Star requirements for connected devices. | Use Scenario: Powering portable audio DACs, Bluetooth headsets, or USB-C peripherals requiring clean 3.3-V rail from variable 4.5–5.5-V source. IC Role / Device Role / Timing Role: Input-voltage-robust buck converter with UVLO hysteresis preventing reset glitches during USB cable insertion/removal. Use Value: 0.02%/V line regulation ensures <10-mV output variation across full input range, preserving analog signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRVR | 2.25-MHz switching, 0.6-V reference, 1.0-A rating, 6-pin WSON package | Lacks AEC-Q100 qualification; lower thermal resistance (RθJA = 42°C/W vs 165°C/W) but requires PCB redesign | Select for higher thermal performance in non-automotive designs where board space permits WSON footprint |
| MP2101DQ-LF-Z | 1.5-MHz switching, 0.6-V reference, 1.0-A rating, 6-pin QFN package | No integrated OVP or soft-start; requires external components for equivalent protection features | Select for cost-sensitive industrial applications where simplified BOM outweighs missing protection functions |
Compared with TPS62231DRVR and MP2101DQ-LF-Z, LM2830ZQMFX/NOPB offers AEC-Q100 Grade 1 qualification, integrated soft-start and OVP, and SOT-23 compatibility-making it optimal for automotive infotainment and USB-C accessories requiring robust, drop-in power conversion without layout changes.
Availability
LM2830ZQMFX/NOPB is available at Aetrix Electronics and suitable for USB powered devices, set-top boxes, and automotive infotainment systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.
Supply support for LM2830ZQMFX/NOPB 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
Texas Instruments is a global semiconductor leader designing analog and embedded processing chips for industrial, automotive, and personal electronics markets.
The LM2830 product line delivers high-frequency, monolithic buck regulators optimized for space-constrained applications needing 1-A output with minimal external components-targeting USB peripherals, HDDs, and automotive body electronics.
FAQ
What is the switching frequency of the LM2830ZQMFX/NOPB and how does it affect design?
The LM2830ZQMFX/NOPB operates at a fixed 3.0-MHz switching frequency. This high frequency allows designers to use smaller inductors (e.g., 2.2 µH) and ceramic output capacitors (e.g., 22 µF), reducing total solution size by up to 40% compared to 500-kHz regulators. It also shifts EMI energy above sensitive AM radio bands, easing compliance testing. The LM2830ZQMFX/NOPB maintains >90% efficiency at 1-A load despite the high frequency due to its low 130-mΩ PMOS switch.
How does the LM2830ZQMFX/NOPB implement overvoltage protection?
The LM2830ZQMFX/NOPB monitors the FB pin voltage and disables the internal PMOS switch if it exceeds 1.15× the 0.6-V internal reference (i.e., 0.69 V), corresponding to a 3.3-V output rising to ~3.97 V. This action prevents damage to downstream 3.3-V logic circuits during feedback divider failure or load transients. Recovery occurs automatically once FB falls below the threshold. The LM2830ZQMFX/NOPB integrates this function without external components, unlike many competing regulators requiring discrete OVP circuits.
Can the LM2830ZQMFX/NOPB be used in automotive applications?
Yes, the LM2830ZQMFX/NOPB is AEC-Q100 Grade 1 qualified (–40°C to +125°C operating junction temperature), making it suitable for automotive cabin electronics such as USB chargers, display backlight drivers, and telematics modules. Its thermal shutdown (165°C), UVLO hysteresis (430 mV), and 2-kV HBM ESD rating meet stringent automotive reliability requirements. The LM2830ZQMFX/NOPB shares pinout and electrical specs with the LM2830Z-Q1 variant, enabling direct qualification reuse in production designs.
What is the purpose of the EN pin on the LM2830ZQMFX/NOPB and what voltage levels enable/disable it?
The EN pin provides logic-controlled on/off functionality for the LM2830ZQMFX/NOPB. Driving EN ≥1.8 V enables regulation; pulling EN <0.4 V places the device in ultra-low-power shutdown mode (IQ = 30 nA). The pin must never float or exceed VIN + 0.3 V to avoid damage. A 100-kΩ pullup to VIN is recommended for default-enable operation. This feature allows system-level power sequencing and battery conservation in portable LM2830ZQMFX/NOPB applications.
How does the LM2830ZQMFX/NOPB achieve stable regulation without external compensation components?
The LM2830ZQMFX/NOPB uses internally compensated current-mode control with a built-in artificial ramp and error amplifier, eliminating the need for external compensation networks. This architecture provides inherent stability across 3.0–5.5-V input and 0.6–4.5-V output ranges with standard 22-µF ceramic output capacitors. The LM2830ZQMFX/NOPB's fixed 3.0-MHz frequency and optimized internal loop ensure phase margin >45° and gain margin >10 dB without designer intervention, simplifying design for first-time DC-DC users.
LM2830ZQMFX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 4.5V
- Current - Output:
- 1A
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM2830ZQMFX/NOPB FAQ
1.How can I place an order for LM2830ZQMFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2830ZQMFX/NOPB 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 LM2830ZQMFX/NOPB reliable?
The price and inventory of LM2830ZQMFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2830ZQMFX/NOPB is usually 5 days.
3.What payment methods are accepted for LM2830ZQMFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2830ZQMFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2830ZQMFX/NOPB?
LM2830ZQMFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2830ZQMFX/NOPB 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 LM2830ZQMFX/NOPB?
For technical support, including LM2830ZQMFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2830ZQMFX/NOPB requirements.
6.How does Aetrix verify that LM2830ZQMFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2830ZQMFX/NOPB 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 LM2830ZQMFX/NOPB meets industry standards.
7.What is the process for return or replacement of LM2830ZQMFX/NOPB?
All LM2830ZQMFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2830ZQMFX/NOPB, 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 LM2830ZQMFX/NOPB part is unused and in its original packaging.
Return procedure for LM2830ZQMFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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