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Texas Instruments LM2830ZSD/NOPB
- Part No.:
- LM2830ZSD/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
LM2830ZSD/NOPB.pdf
- Description:
- IC REG BUCK ADJ 1A 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
LM2830ZSD/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 up to 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 3.0–5.5 V input to adjustable 0.6–4.5 V output for compact point-of-load power in USB-powered devices and set-top boxes.
For engineers reviewing the LM2830ZSD/NOPB datasheet, LM2830ZSD/NOPB pinout, LM2830ZSD/NOPB application, or LM2830ZSD/NOPB equivalent, key selection criteria 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 (1.2–1.75 A), and internal soft-start (600 µs ramp).
Technical Context
The LM2830ZSD/NOPB implements constant-frequency current-mode control with an internal 0.6 V reference, artificial ramp compensation, and pulse-by-pulse current limiting. Its 3.0 MHz oscillator enables sub-microsecond on-times (~30 ns minimum), supporting high duty-cycle operation down to 0.6 V output while maintaining stability across 3.0–5.5 V input.
It integrates a 130 mΩ PMOS high-side switch, feedback error amplifier, soft-start circuitry, undervoltage lockout (UVLO with 430 mV hysteresis), overvoltage protection (15% above VREF), and thermal shutdown. The 5-pin SOT-23 layout places GND adjacent to FB for low-noise feedback routing and minimizes parasitic inductance on the SW node.
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, reducing solution size by >40% vs 1.6 MHz variants. |
| Output Current | 1.0 A continuous - Supported by integrated 130 mΩ PMOS switch; peak current limit ensures safe operation under transient loads. |
| Feedback Reference | 0.600 V ±2% - Sets output voltage via external resistor divider; tight tolerance enables ±1% output regulation over line/load/temperature. |
| Input Voltage Range | 3.0 V to 5.5 V - Matches standard USB 5 V and Li-ion battery rails; UVLO activates at 2.73 V (rising) with 430 mV hysteresis. |
| Shutdown Current | 30 nA - Allows battery-backed systems to maintain >1-year shelf life without significant drain during standby. |
| Thermal Shutdown | 165°C - Protects against sustained overload or poor PCB thermal design; auto-recovery at ~150°C junction temperature. |
| Soft-Start Time | ~600 µs - Controls output ramp rate to limit inrush current into downstream capacitance, preventing input rail collapse. |
Pinout & Package
LM2830ZSD/NOPB uses a 5-pin SOT-23 package (2.90 mm × 1.60 mm body size) with exposed pad not present - all thermal dissipation occurs through leads and PCB copper. Pin 2 (GND) serves as both signal and power ground; optimal layout places bottom feedback resistor directly adjacent to this pin.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | Switch Node Output | Connects to inductor and catch diode anode; carries high di/dt switching current - requires short, wide trace and local ground pour. |
| GND (Pin 2) | Signal & Power Ground | Primary return path for feedback network and internal bias; must be low-impedance connection to system ground plane. |
| FB (Pin 3) | Feedback Input | Senses output voltage via resistor divider; high-impedance node - route away from noisy traces and place bottom resistor near GND pin. |
| EN (Pin 4) | Enable Control | Active-high logic input; 1.8 V threshold - tie to VIN via 100 kΩ pull-up for default-on operation; avoid floating. |
| VIN (Pin 5) | Power Input | Supplies internal circuitry and PMOS gate drive; requires local 22 µF ceramic capacitor placed within 3 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| 3.0 MHz Fixed Switching Frequency | Enables <3.3 µH inductors and 22 µF X5R ceramics, achieving full 1.0-A regulation in <30 mm² PCB area. |
| Internal 0.6-V ±2% Reference | Supports precise output setting (e.g., 3.3 V ±1%) with only two external resistors; eliminates need for external reference IC. |
| Cycle-by-Cycle Current Limit | Protects switch during short-circuit or overload - limits peak inductor current to 1.2–1.75 A without external sensing components. |
| Integrated Soft-Start | Ramps internal reference from 0 V to 0.6 V over 600 µs, limiting startup inrush into 100–220 µF output capacitance. |
| Overvoltage Protection | Shuts off PMOS when FB exceeds 0.69 V (15% above VREF), preventing damage to downstream 3.3-V or 1.8-V ICs. |
Applications
| Local 5-V to 3.3-V Conversion | USB-Powered Peripheral Regulation |
|---|---|
Use Scenario: Converting 5 V USB supply to stable 3.3 V for microcontroller I/O, sensors, and communication interfaces in portable diagnostic tools. IC Role / Device Role / Timing Role: Primary step-down regulator providing regulated 3.3 V @ 1.0 A with fast transient response to handle burst-mode MCU activity. Use Value: 3.0 MHz operation allows 2.2 µH inductor + 22 µF ceramic output cap - total solution size <25 mm², critical for handheld enclosures. | Use Scenario: Powering FPGA configuration circuitry and USB transceiver in bus-powered test adapters requiring low quiescent current. IC Role / Device Role / Timing Role: Load switch and voltage regulator combined - EN pin enables synchronized power-up of multiple subsystems from single USB port. Use Value: 30 nA shutdown current preserves host battery life during idle; 3.0 MHz switching avoids audible noise in sensitive measurement environments. |
| HDD Core Power Supply | Set-Top Box SoC Rail |
Use Scenario: Generating 1.2 V core voltage for 2.5-inch HDD controller ASICs operating from 5 V SATA rail. IC Role / Device Role / Timing Role: High-efficiency buck converter delivering 1.0 A with <10 mV load regulation - maintains stable core voltage during motor spin-up transients. Use Value: 93% peak efficiency at 1 A reduces thermal load on small HDD PCB; thermal shutdown prevents latch-up during mechanical shock events. | Use Scenario: Providing 1.8 V logic rail for MPEG decoder SoC in cost-sensitive consumer STB designs. IC Role / Device Role / Timing Role: Compact, low-BOM-count DC-DC regulator replacing discrete solutions - supports 1.8 V ±2% tolerance required by DDR memory interface. Use Value: Internal compensation eliminates need for external Type-II/III compensation network, reducing BOM count by 4–6 passive components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2830XSD/NOPB | 1.6 MHz switching frequency, same 5-pin SOT-23 package and pinout. | Lower frequency increases inductor size (≥4.7 µH) but improves light-load efficiency and EMI profile. | Select for cost-sensitive designs where board space >30 mm² is acceptable and EMI filtering is prioritized over miniaturization. |
| TPS62231DRVR | 3.0 MHz, 1.0-A buck with 0.6-V reference, but uses 6-pin WSON (2.0 × 2.0 mm) and requires external compensation. | Higher PSRR and tighter load regulation (±0.5%) - suited for noise-sensitive analog subsystems. | Choose when output voltage accuracy and ripple rejection outweigh SOT-23 footprint advantages; verify PCB rework for WSON thermal pad. |
Compared with LM2830XSD/NOPB, LM2830ZSD/NOPB delivers identical functionality in the same package but trades higher-frequency operation (3.0 MHz vs 1.6 MHz) for smaller passives and reduced solution size - whereas TPS62231DRVR offers superior regulation performance at the cost of larger package and added external components.
Availability
LM2830ZSD/NOPB is available at Aetrix Electronics and suitable for USB-powered peripherals, HDD core supplies, and set-top box SoC rails requiring stable component supply, automotive-grade reliability (via LM2830Z-Q1 variant), and compact DC-DC conversion.
Supply support for LM2830ZSD/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 company designing analog ICs, embedded processors, and power management solutions for industrial, automotive, and consumer markets.
The LM2830 product line delivers high-frequency, monolithic buck regulators optimized for space-constrained applications requiring 1.0-A output with minimal external components - targeting portable electronics, storage devices, and digital consumer equipment.
FAQ
What is the maximum output current capability of the LM2830ZSD/NOPB?
The LM2830ZSD/NOPB delivers up to 1.0 A of continuous output current under recommended operating conditions (VIN = 3.0–5.5 V, TJ ≤ 125°C). Its internal 130 mΩ PMOS switch and cycle-by-cycle current limit (1.2–1.75 A typical) ensure reliable operation at full rated load. Derating is required above 85°C ambient due to thermal limits.
Does the LM2830ZSD/NOPB require external compensation components?
No, the LM2830ZSD/NOPB features internal compensation and operates stably with only five external components: input capacitor, output capacitor, inductor, catch diode, and feedback resistor divider. This eliminates the need for external Type-II or Type-III compensation networks, simplifying design and reducing BOM count.
What is the purpose of the EN pin on the LM2830ZSD/NOPB?
EN is an active-high enable input that controls device operation: logic high (>1.8 V) enables regulation; logic low (<0.4 V) places LM2830ZSD/NOPB in shutdown mode with 30 nA quiescent current. It must not float - TI recommends tying to VIN via a 100 kΩ pull-up resistor for default-on behavior.
Can the LM2830ZSD/NOPB be used with ceramic output capacitors?
Yes, the LM2830ZSD/NOPB is fully compatible with multilayer ceramic capacitors (MLCCs) such as X5R/X7R types. Its current-mode control and internal compensation ensure stability with low-ESR ceramics - TI recommends ≥22 µF output capacitance for optimal transient response and ripple suppression.
How does the LM2830ZSD/NOPB protect against overvoltage conditions?
The LM2830ZSD/NOPB includes internal overvoltage protection (OVP) that monitors the FB pin. If FB rises 15% above the 0.6-V reference (i.e., >0.69 V), the internal PMOS switch is immediately disabled, allowing the output to discharge safely through the catch diode and load - protecting downstream 3.3-V or 1.8-V ICs from damage.
LM2830ZSD/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- 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:
- 6-WSON (3x3)
LM2830ZSD/NOPB FAQ
1.How can I place an order for LM2830ZSD/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2830ZSD/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 LM2830ZSD/NOPB reliable?
The price and inventory of LM2830ZSD/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2830ZSD/NOPB is usually 5 days.
3.What payment methods are accepted for LM2830ZSD/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2830ZSD/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2830ZSD/NOPB?
LM2830ZSD/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2830ZSD/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 LM2830ZSD/NOPB?
For technical support, including LM2830ZSD/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2830ZSD/NOPB requirements.
6.How does Aetrix verify that LM2830ZSD/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2830ZSD/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 LM2830ZSD/NOPB meets industry standards.
7.What is the process for return or replacement of LM2830ZSD/NOPB?
All LM2830ZSD/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2830ZSD/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 LM2830ZSD/NOPB part is unused and in its original packaging.
Return procedure for LM2830ZSD/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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