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Texas Instruments LM2830ZSDX
- Part No.:
- LM2830ZSDX
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
LM2830ZSDX.pdf
- Description:
- IC REG BUCK ADJ 1A 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,615
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Product details
Overview
LM2830ZSDX from Texas Instruments is a high-frequency, current-mode PWM step-down DC-DC regulator IC in a 5-pin SOT-23 package, delivering up to 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 ±2% internal reference, and supports output voltages from 0.6 V to 4.5 V. It is used in space-constrained USB-powered devices and set-top boxes requiring compact, efficient local regulation.
For engineers reviewing the LM2830ZSDX datasheet, LM2830ZSDX pinout, LM2830ZSDX application, or LM2830ZSDX equivalent, key selection considerations include its 3.0-MHz operation enabling ultra-small external inductors/capacitors, thermal shutdown at 165°C, 30-nA shutdown current, cycle-by-cycle current limit (1.75 A typ), and compatibility with ceramic output capacitors for low-ESR transient response.
Technical Context
The LM2830ZSDX employs fixed-frequency current-mode PWM control with internal compensation, enabling stable regulation across 3.0–5.5 V input and 0.6–4.5 V output ranges. Its 3.0-MHz oscillator allows minimum on-times of ~30 ns, supporting high duty-cycle operation down to 0.6 V output while maintaining fast transient response.
It integrates undervoltage lockout (UVLO with 2.73 V turn-on and 430 mV hysteresis), internal soft-start (~600 µs ramp), overvoltage protection (15% above VREF), and thermal shutdown (165°C trip, 150°C recovery). The 130-mΩ PMOS switch and 0.6-V reference enable high efficiency (up to 93%) and precise feedback-based regulation without external compensation components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 3.0 MHz - enables use of ≤3.3-µH inductors and 22-µF ceramic capacitors, minimizing PCB footprint. |
| Output Current | 1.0 A continuous - supports core power rails in HDDs, USB peripherals, and DSL modems. |
| Input Voltage Range | 3.0 V to 5.5 V - compatible with single-cell Li-ion, USB 5-V, and regulated 3.3-V/5-V system rails. |
| Feedback Reference | 0.600 V ±2% - sets output voltage via external resistor divider; enables 3.3-V, 1.8-V, or 1.2-V regulation with <1% error. |
| PMOS RDS(ON) | 130 mΩ - reduces conduction loss at 1-A load; contributes to ≥90% peak efficiency at 5-VIN/3.3-VOUT. |
| Shutdown Current | 30 nA - enables ultra-low-power standby in battery-backed or always-on embedded systems. |
| Current Limit | 1.75 A typical - provides cycle-by-cycle protection against short-circuit or overload without external sensing. |
Pinout & Package
LM2830ZSDX is housed in a 5-pin SOT-23 package (2.90 mm × 1.60 mm), optimized for thermal performance and board-area efficiency in high-density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switch node output | Connects to inductor and catch diode anode; carries high dv/dt switching waveform; requires tight layout to minimize EMI. |
| GND | Signal and power ground | Primary return path for feedback network and internal circuitry; bottom resistor of FB divider must be placed adjacent to this pin. |
| FB | Feedback input | Senses output voltage via external resistor divider; internal 0.6-V reference compares against divider ratio to regulate VO. |
| EN | Enable control input | Logic-high (>1.8 V) enables regulation; logic-low (<0.4 V) disables device and reduces quiescent current to 30 nA. |
| VIN | Power input supply | Accepts 3.0–5.5 V; supplies internal LDO, gate driver, and control circuitry; requires local 22-µF ceramic bypass capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 3.0-MHz switching | Eliminates external frequency-setting components; supports <1-mm-height inductors and chip-scale MLCCs. |
| Internal soft-start | 600-µs controlled VOUT ramp prevents inrush current into large output capacitors during power-up. |
| Output overvoltage protection | Shuts off SW when FB exceeds 0.69 V (15% above 0.6-V reference), protecting downstream 3.3-V logic. |
| Thermal shutdown | Disables switching at 165°C junction temperature; resumes operation only after cooling to ~150°C. |
| Undervoltage lockout | Prevents startup until VIN > 2.73 V; hysteresis ensures clean turn-off at ~2.3 V, avoiding brownout oscillation. |
Applications
| USB Powered Devices | Set-Top Boxes |
|---|---|
|
Use Scenario: Regulating 5-V USB bus to 3.3-V logic rail for HDMI controllers, tuners, and memory interfaces. IC Role / Device Role / Timing Role: Primary step-down regulator providing stable 3.3-V/1.0-A power with fast load transient response to handle burst data transfers. Use Value: 3.0-MHz operation minimizes solution size to fit within slim STB enclosures; 30-nA shutdown extends standby battery life in remote-controlled units. |
Use Scenario: Generating 1.2-V core voltage for MPEG decoder SoCs from a 5-V intermediate rail. IC Role / Device Role / Timing Role: Local point-of-load regulator delivering tightly regulated 1.2-V/1.0-A with <2% output error across temperature and line variation. Use Value: 0.6-V reference and current-mode control ensure <100-µs transient recovery; 130-mΩ switch maintains >91% efficiency at full load. |
| HDD Core Power | DSL Modems |
|
Use Scenario: Supplying 1.8-V or 2.5-V I/O and analog front-end rails in 2.5-inch hard disk drive electronics. IC Role / Device Role / Timing Role: Compact, thermally robust buck converter operating in high ambient temperatures near spinning platters. Use Value: SOT-23 package with 165.2°C/W θJA enables reliable operation at 125°C junction; UVLO prevents erratic behavior during spin-up voltage sag. |
Use Scenario: Converting 5-V adapter output to 3.3-V PHY and microcontroller supply in residential DSL gateways. IC Role / Device Role / Timing Role: High-efficiency, low-noise DC-DC stage powering Ethernet PHYs and VoIP codecs with minimal heat generation. Use Value: Ceramic-capable design suppresses high-frequency ripple; 93% peak efficiency reduces thermal load in sealed plastic enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2830XSDX | 1.6-MHz switching frequency; 150-mΩ PMOS RDS(ON); identical SOT-23-5 package and pinout. | Better efficiency at light loads due to lower switching loss; larger inductor required (≥4.7 µH). | Select LM2830XSDX when prioritizing peak efficiency >94% at 100–500 mA loads and board space permits larger magnetics. |
| TPS62231DRVR | 3-MHz operation; 0.6-V reference; 1.2-A rating; 6-pin WSON package; requires external compensation. | Higher current capability and tighter load regulation; no integrated OVP or soft-start; smaller 2-mm × 2-mm footprint. | Choose TPS62231DRVR when needing >1.0-A output or tighter ±1% output tolerance, and design can accommodate WSON thermal layout. |
Compared with LM2830XSDX, LM2830ZSDX trades slightly lower light-load efficiency for superior high-frequency transient response and smaller passive components; versus TPS62231DRVR, it offers integrated protection features and simpler layout at the cost of 0.2-A lower current rating and larger SOT-23 thermal resistance.
Availability
LM2830ZSDX is available at Aetrix Electronics and suitable for USB powered devices, set-top boxes, HDD core power, and DSL modems requiring stable component supply, long-term manufacturability, and automotive-grade reliability validation.
Supply support for LM2830ZSDX 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 monolithic, high-frequency buck regulators for space-constrained applications where small solution size, fast transient response, and integrated protection are critical - targeting consumer, industrial, and automotive subsystems.
FAQ
What is the maximum output current supported by the LM2830ZSDX?
The LM2830ZSDX is rated for 1.0-A continuous output current under recommended operating conditions (TJ ≤ 125°C, VIN = 5 V, VO = 3.3 V). Its cycle-by-cycle current limit is specified at 1.2 A minimum and 1.75 A typical, providing robust overload protection without external circuitry. Derating is required above 85°C ambient due to thermal limits.
Does the LM2830ZSDX require external compensation components?
No, the LM2830ZSDX uses internally compensated current-mode control architecture. It operates stably with only five external components: input capacitor, output capacitor, inductor, catch diode, and FB divider resistors. No external compensation network (e.g., RC network on COMP pin) is needed, simplifying design and reducing BOM count.
What package type and dimensions does the LM2830ZSDX use?
The LM2830ZSDX is supplied in a 5-pin SOT-23 package with nominal body dimensions of 2.90 mm × 1.60 mm and 1.0-mm height. This RoHS-compliant, surface-mount package supports reflow soldering and provides adequate thermal dissipation for 1-A operation in standard PCB layouts with 2 oz copper.
Can the LM2830ZSDX be used with ceramic output capacitors?
Yes, the LM2830ZSDX is fully compatible with ceramic output capacitors, including X5R and X7R MLCCs. Its current-mode control and internal compensation ensure stability with low-ESR ceramics (e.g., 22 µF, 6.3 V). Ceramic capacitors improve transient response and reduce output ripple compared to tantalum or electrolytic alternatives.
What is the purpose of the EN pin on the LM2830ZSDX?
The EN (Enable) pin on the LM2830ZSDX controls device operation: a logic-high voltage (>1.8 V) enables regulation, while a logic-low voltage (<0.4 V) places the IC in ultra-low-power shutdown mode, reducing quiescent current to 30 nA. The pin must not be left floating and is typically pulled up to VIN via a 100-kΩ resistor in default configurations.
LM2830ZSDX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- 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):
- 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:
- 6-WSON (3x3)
LM2830ZSDX FAQ
1.How can I place an order for LM2830ZSDX through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2830ZSDX 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 LM2830ZSDX reliable?
The price and inventory of LM2830ZSDX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2830ZSDX is usually 5 days.
3.What payment methods are accepted for LM2830ZSDX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2830ZSDX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2830ZSDX?
LM2830ZSDX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2830ZSDX 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 LM2830ZSDX?
For technical support, including LM2830ZSDX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2830ZSDX requirements.
6.How does Aetrix verify that LM2830ZSDX is sourced from the original manufacturer or authorized distributors?
All LM2830ZSDX 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 LM2830ZSDX meets industry standards.
7.What is the process for return or replacement of LM2830ZSDX?
All LM2830ZSDX units undergo pre-shipment inspection (PSI). If there is an issue with LM2830ZSDX, 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 LM2830ZSDX part is unused and in its original packaging.
Return procedure for LM2830ZSDX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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