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Texas Instruments LM2830ZMF/NOPB
- Part No.:
- LM2830ZMF/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM2830ZMF/NOPB.pdf
- Description:
- IC REG BUCK ADJ 1A SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,485
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Product details
Overview
LM2830ZMF/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 continuous output at 3.3 V from a 5-V input. It integrates a 130-mΩ PMOS switch, features a fixed 3.0-MHz switching frequency, 0.6-V internal reference with 2% accuracy, and supports input voltage range of 3.0 V to 5.5 V. It is used in space-constrained USB-powered devices and set-top boxes for local core voltage regulation.
For engineers reviewing the LM2830ZMF/NOPB datasheet, LM2830ZMF/NOPB pinout, LM2830ZMF/NOPB application, or LM2830ZMF/NOPB equivalent, key selection criteria include its 3.0-MHz fixed-frequency operation, internal soft-start, thermal shutdown at 165°C, overvoltage protection, and compatibility with ceramic output capacitors for minimal PCB footprint.
Technical Context
The LM2830ZMF/NOPB employs constant-frequency current-mode control with internal compensation, enabling stable regulation across wide load and line variations without external loop components. Its 3.0-MHz oscillator allows use of sub-3.3-µH inductors and 22-µF ceramic capacitors, minimizing solution size while maintaining >90% efficiency at 1-A load.
It implements cycle-by-cycle current limiting (1.75-A typical), undervoltage lockout with 430-mV hysteresis (2.73-V turn-on, 2.3-V turn-off), and internal soft-start with ~600-µs ramp time. The feedback pin senses output via resistor divider referenced to 0.6-V internal reference, and EN pin enables logic-level on/off control with 30-nA shutdown current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | Fixed 3.0 MHz - enables ultra-compact filter design with ≤3.3 µH inductors and 22 µF ceramic capacitors |
| Output Current | 1.0 A continuous - supports single-rail core supplies for USB peripherals and consumer SoCs |
| Input Voltage Range | 3.0 V to 5.5 V - compatible with standard USB 5-V and Li-ion battery-derived rails |
| Feedback Reference | 0.600 V ±2% - sets output voltage precisely via external resistor divider (e.g., 3.3 V = R1/R2 = 4.5) |
| 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 low-power standby modes in portable applications |
| Thermal Shutdown | 165°C activation, ~150°C recovery - protects against sustained overload or poor heatsinking in enclosed enclosures |
Pinout & Package
LM2830ZMF/NOPB uses the 5-pin SOT-23 package (2.90 mm × 1.60 mm), optimized for high-density layouts. Thermal performance relies on proper PCB copper pour under the GND pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | Switch node output | Connects to inductor and catch diode anode; carries high dv/dt switching waveform - requires short, low-inductance routing |
| GND (Pin 2) | Signal and power ground | Primary return path for feedback network and internal circuitry; must be placed adjacent to FB bottom resistor |
| FB (Pin 3) | Feedback input | Senses output voltage via resistor divider; high-impedance (≤100 nA bias) - sensitive to noise coupling |
| EN (Pin 4) | Enable control | Active-high logic input; floats to disable; must not exceed VIN + 0.3 V - typically pulled to VIN via 100-kΩ resistor |
| VIN (Pin 5) | Power input supply | Accepts 3.0–5.5 V; feeds internal LDO and gate driver; requires local 22-µF ceramic decoupling |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.0-MHz switching | Enables use of 2.2–3.3 µH shielded inductors and 10–22 µF X5R/X7R MLCCs, reducing total solution area by >40% vs 500-kHz regulators |
| Internal soft-start | Ramps reference from 0 V to 0.6 V over ~600 µs, limiting inrush current to <1.5× steady-state peak and preventing output overshoot |
| Output overvoltage protection | Shuts down SW when FB exceeds 15% above 0.6 V (i.e., >0.69 V), protecting downstream 3.3-V logic from fault-induced overvoltage |
| Current-mode PWM control | Provides inherent cycle-by-cycle current limiting and fast transient response (<10 µs to settle after 0.5-A step load) |
| Thermal shutdown with hysteresis | Disables switching at 165°C junction temperature and re-enables only after cooling to ~150°C, preventing thermal runaway during sustained overload |
Applications
| USB Powered Devices | Set-Top Boxes |
|---|---|
Use Scenario: Powering USB 2.0/3.0 peripheral controllers, PHYs, and microcontrollers from a 5-V bus with strict size constraints. IC Role / Device Role / Timing Role: Primary step-down regulator converting 5-V USB input to stable 3.3-V or 1.8-V core rail for SoC subsystems. Use Value: 3.0-MHz operation allows full regulation with ≤3.3-µH inductors and 22-µF ceramic caps, fitting within <12 mm² PCB area. | Use Scenario: Generating local 3.3-V supply for demodulator ICs, tuners, and HDMI interface logic in compact STB mainboards. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter delivering 1.0-A continuous current with low EMI due to fixed-frequency operation. Use Value: 92% peak efficiency at 1-A load minimizes heat buildup in thermally constrained plastic enclosures. |
| DSL Modems | Core Power in HDDs |
Use Scenario: Providing regulated 3.3-V supply to ADSL/VDSL line drivers and DSPs in residential broadband gateways. IC Role / Device Role / Timing Role: Input-filter-tolerant buck regulator operating from noisy 5-V SMPS rails with fast line transient response. Use Value: Current-mode control ensures stable regulation despite ±10% input ripple and 100-mA/ms load steps. | Use Scenario: Supplying 3.3-V logic rail to HDD controller ASICs and buffer memory during spin-up and active seek operations. IC Role / Device Role / Timing Role: Robust DC-DC converter with thermal shutdown and overvoltage protection for mission-critical storage subsystems. Use Value: 130-mΩ integrated PMOS switch and 1.75-A current limit prevent latch-up during motor surge currents. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | 2.25–3.0 MHz adjustable frequency; 0.6-V reference; 1.0-A rating; 3-mm × 3-mm WSON-6 | Requires external compensation; larger package; higher quiescent current (12 µA shutdown) | Preferred when adjustable frequency or tighter load regulation is required; not pin-compatible |
| AP63202WU-7 | Fixed 2.2-MHz frequency; 0.6-V reference; 2-A rating; 2-mm × 2-mm WLCSP-12 | Higher current capability; smaller footprint; no integrated OVP or soft-start | Selected for higher-current or ultra-compact designs where external OVP can be added |
Compared with TPS62231DRYR and AP63202WU-7, the LM2830ZMF/NOPB offers fixed 3.0-MHz operation in the smallest standard SOT-23 package, with built-in soft-start and overvoltage protection - making it optimal for cost-sensitive, space-constrained 1-A USB and consumer applications where minimal BOM count is critical.
Availability
LM2830ZMF/NOPB is available at Aetrix Electronics and suitable for USB powered devices, set-top boxes, DSL modems, and HDD core power applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LM2830ZMF/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 specializing in analog, embedded processing, and power management technologies, with decades of expertise in high-efficiency DC-DC conversion.
The LM2830 product line delivers compact, high-frequency step-down regulators for consumer, computing, and communications applications where board space, efficiency, and ease of use are critical design constraints.
FAQ
What is the switching frequency of the LM2830ZMF/NOPB?
The LM2830ZMF/NOPB has a fixed switching frequency of 3.0 MHz, as confirmed in the Electrical Characteristics table (FSW = 2.25–3.75 MHz, typical 3.0 MHz). This high frequency enables use of small external components - typically 2.2–3.3 µH inductors and 10–22 µF ceramic capacitors - minimizing total solution size while maintaining high efficiency and fast transient response.
Does the LM2830ZMF/NOPB require external compensation components?
No, the LM2830ZMF/NOPB uses internal compensation and does not require external compensation components. Its current-mode control architecture with built-in error amplifier and PWM comparator eliminates the need for external RC networks, simplifying design and reducing BOM count. This is explicitly stated in the Detailed Description section: "The LM2830 device is internally compensated, so it is simple to use and requires few external components."
What is the maximum output current supported by the LM2830ZMF/NOPB?
The LM2830ZMF/NOPB supports up to 1.0-A continuous output current, as specified in the Features and Recommended Operating Conditions sections. Its current-limit threshold is 1.2-A minimum and 1.75-A typical, ensuring reliable operation at full rated load across temperature and input voltage ranges. Efficiency remains above 90% at 1-A load with 5-V input and 3.3-V output.
How does the enable (EN) pin function on the LM2830ZMF/NOPB?
The EN pin on the LM2830ZMF/NOPB is an active-high logic input that controls device operation. When pulled high (≥1.8 V), the regulator operates normally; when pulled low (<0.4 V), it enters shutdown mode with only 30-nA quiescent current. The pin must not float and must not exceed VIN + 0.3 V. A typical implementation uses a 100-kΩ pullup to VIN, as shown in the Typical Application Circuit.
What protection features are integrated into the LM2830ZMF/NOPB?
The LM2830ZMF/NOPB integrates thermal shutdown (165°C activation), output overvoltage protection (triggers at FB > 0.69 V), cycle-by-cycle current limiting (1.2–1.75 A), undervoltage lockout (2.73-V turn-on with 430-mV hysteresis), and internal soft-start (~600 µs ramp). These features are documented in Sections 7.3.1–7.3.5 and Table 6.6 of the SNVS454E datasheet, providing robust fault tolerance without external circuitry.
LM2830ZMF/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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM2830ZMF/NOPB FAQ
1.How can I place an order for LM2830ZMF/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2830ZMF/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 LM2830ZMF/NOPB reliable?
The price and inventory of LM2830ZMF/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2830ZMF/NOPB is usually 5 days.
3.What payment methods are accepted for LM2830ZMF/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2830ZMF/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2830ZMF/NOPB?
LM2830ZMF/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2830ZMF/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 LM2830ZMF/NOPB?
For technical support, including LM2830ZMF/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2830ZMF/NOPB requirements.
6.How does Aetrix verify that LM2830ZMF/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2830ZMF/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 LM2830ZMF/NOPB meets industry standards.
7.What is the process for return or replacement of LM2830ZMF/NOPB?
All LM2830ZMF/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2830ZMF/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 LM2830ZMF/NOPB part is unused and in its original packaging.
Return procedure for LM2830ZMF/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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