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Texas Instruments LM2830ZSDX/NOPB
- Part No.:
- LM2830ZSDX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
LM2830ZSDX/NOPB.pdf
- Description:
- IC REG BUCK ADJ 1A 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,699
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Product details
Overview
LM2830ZSDX/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 LM2830ZSDX/NOPB datasheet, LM2830ZSDX/NOPB pinout, LM2830ZSDX/NOPB application, or LM2830ZSDX/NOPB equivalent, key selection criteria include its 3.0-MHz operation enabling ultra-small magnetics, thermal shutdown at 165°C, 30-nA shutdown current, ±2% VFB accuracy over temperature, and integrated soft-start limiting inrush during power-up.
Technical Context
The LM2830ZSDX/NOPB implements constant-frequency current-mode control with internal compensation, using a 0.6-V precision bandgap reference and pulse-by-pulse current limiting. Its 3.0-MHz oscillator enables sub-1-mm inductor height designs while maintaining stable regulation across 3.0–5.5-V input and 0.6–4.5-V output ranges.
Functional block integration includes undervoltage lockout (UVLO) with 2.73-V turn-on and 430-mV hysteresis, output overvoltage protection triggering at 15% above VFB, and thermal shutdown that disables the PMOS switch above 165°C junction temperature-re-enabling only after cooling to ~150°C.
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 for <10-mm² solution size |
| Output Current | 1.0 A continuous - supports core power in HDDs and local Vcore conversion without external current-sense resistors |
| VFB Reference | 0.600 V ±2% - sets output voltage via resistor divider; ensures ±1.5% total output accuracy over line/load/temperature |
| RDS(on) | 130 mΩ - limits conduction loss to <130 mW at 1-A load, supporting >90% peak efficiency at 5-VIN/3.3-VOUT |
| Quiescent Current | 4.3–6.5 mA (active), 30 nA (shutdown) - enables battery-backed systems to maintain >1-year shelf life in standby |
| UVLO Threshold | 2.73 V (rising), 2.3 V (falling) - prevents erratic startup during brownout and ensures clean power sequencing |
| Thermal Shutdown | 165°C - protects against sustained overload or poor PCB thermal design; auto-recovery at ~150°C |
Pinout & Package
LM2830ZSDX/NOPB uses a 5-pin SOT-23 package (2.90 mm × 1.60 mm) with exposed pad not present. Pin functions are validated per TI SNVS454E Rev E datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switch node output | Connects to inductor and catch diode anode; carries high di/dt switching current; requires tight layout to minimize EMI |
| GND | Signal and power ground | Reference for feedback network and internal circuits; bottom resistor of FB divider must be placed adjacent to this pin |
| FB | Feedback input | Senses output voltage via resistor divider; high-impedance (≤100 nA bias) enables precise ratio setting without loading error |
| EN | Enable control | Active-high logic input; must not float or exceed VIN + 0.3 V; drives 30-nA shutdown when pulled low |
| VIN | Power input supply | Accepts 3.0–5.5 V; supplies both control circuitry and PMOS gate drive; requires local 22-µF ceramic decoupling |
Key Features
| Feature | Design Value |
|---|---|
| 3.0-MHz fixed-frequency PWM | Enables <3-mm tall inductors and eliminates audible noise; reduces output capacitor ESR dependency for transient response |
| Internal 0.6-V ±2% reference | Permits accurate output programming from 0.6 V to 4.5 V using standard 1% resistors; eliminates external reference IC cost and area |
| Integrated soft-start (600 µs) | Linearly ramps VREF from 0 to 0.6 V, limiting inrush current to <1.2× IOUT and preventing input rail collapse |
| Pulse-by-pulse current limit | Detects >1.75-A switch current each cycle, protecting against short-circuit and startup overload without latch-up |
| Output overvoltage protection | Shuts off PMOS when FB exceeds 1.15× VFB, clamping output to safe level during feedback divider open-circuit failure |
Applications
| Local 5-V to Vcore Conversion | Core Power in HDDs |
|---|---|
Use Scenario: Regulating 5-V USB bus to 1.2-V or 1.8-V processor core voltage on compact peripheral boards. IC Role / Device Role / Timing Role: Primary buck controller providing tightly regulated, low-noise Vcore with fast transient response to CPU load steps. Use Value: 3.0-MHz operation allows 2.2-µH inductor and 22-µF X5R ceramic output cap, achieving <8-mm² footprint while maintaining <20-mV output deviation under 1-A step load. | Use Scenario: Powering spindle motor driver and servo controller ICs in 2.5-inch hard disk drives with strict thermal and space constraints. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator converting 5-V system rail to 3.3-V logic supply for HDD controller ASIC. Use Value: 130-mΩ RDS(on) and 93% peak efficiency reduce thermal load on sealed HDD enclosure; 30-nA shutdown current preserves battery backup during idle. |
| Set-Top Boxes | USB-Powered Devices |
Use Scenario: Generating 3.3-V and 1.2-V rails from 5-V USB-C or wall adapter input in consumer media streamers. IC Role / Device Role / Timing Role: Dual-rail power manager delivering stable low-noise supplies for video decoder SoC and HDMI PHY. Use Value: Internal compensation and current-mode control ensure stability with low-ESR ceramic caps; ±2% VFB accuracy maintains compliance with SoC VDD tolerance specs across temperature. | Use Scenario: Enabling portable test equipment, Bluetooth headsets, or IoT sensors powered solely by USB 5-V source. IC Role / Device Role / Timing Role: Single-chip DC-DC solution replacing linear regulators to extend battery runtime and eliminate heat sinks. Use Value: 30-nA shutdown current extends shelf life of battery-backed units; 3.0-MHz switching avoids interference with 2.4-GHz RF sections; SOT-23 package fits <3-mm board edge clearance. |
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 OVP and UVLO hysteresis; requires external soft-start capacitor | Preferred when board space permits WSON and higher efficiency at light loads is prioritized over fault protection |
| AP63202WU-7 | 3.0-MHz, 1.2-A rating, 0.6-V reference, 6-pin SOT-563 package | Higher RDS(on) (180 mΩ), no integrated OVP, wider enable threshold (0.4–1.2 V) | Selected for cost-sensitive USB devices where 1.2-A headroom and smaller SOT-563 footprint outweigh missing protections |
Compared with TPS62231DRVR and AP63202WU-7, LM2830ZSDX/NOPB provides superior fault coverage (OVP, UVLO hysteresis, thermal shutdown) and lower RDS(on) in the smallest 5-pin SOT-23 form factor-making it optimal for space-constrained, safety-aware USB and consumer applications requiring robust single-chip power.
Availability
LM2830ZSDX/NOPB is available at Aetrix Electronics and suitable for USB-powered devices, set-top boxes, and HDD core power applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LM2830ZSDX/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 ICs, embedded processors, and digital signal solutions for industrial, automotive, and consumer markets.
The LM2830 product line delivers high-frequency, low-external-component buck regulators optimized for compact, efficient point-of-load conversion in space- and thermally constrained portable electronics.
FAQ
What is the switching frequency of the LM2830ZSDX/NOPB and how does it impact design?
The LM2830ZSDX/NOPB operates at a fixed 3.0-MHz switching frequency. This high frequency allows use of small surface-mount inductors (e.g., 2.2–3.3 µH) and ceramic capacitors (e.g., 22 µF X5R), reducing total solution size to under 10 mm². It also minimizes output voltage ripple and improves transient response without requiring complex compensation networks-key advantages for USB-powered and portable designs where board space is critical.
Does the LM2830ZSDX/NOPB require external compensation components?
No, the LM2830ZSDX/NOPB uses internal compensation and current-mode control architecture, eliminating the need for external compensation components such as Type-II or Type-III networks. This simplifies design, reduces BOM count, and improves reliability-especially in high-volume consumer applications like set-top boxes and USB peripherals where layout consistency and manufacturing yield are essential.
What protection features are integrated into the LM2830ZSDX/NOPB?
The LM2830ZSDX/NOPB integrates undervoltage lockout (UVLO) with 430-mV hysteresis, thermal shutdown at 165°C, output overvoltage protection (OVP) triggered at 15% above VFB, pulse-by-pulse current limiting (~1.75 A), and internal soft-start. These features collectively protect against input brownout, overtemperature, feedback divider failure, short-circuit, and inrush current-enabling robust operation in unattended USB-powered and consumer electronics without external supervision circuitry.
Can the LM2830ZSDX/NOPB be used with ceramic output capacitors exclusively?
Yes, the LM2830ZSDX/NOPB is fully compatible with ceramic output capacitors-including X5R and X7R MLCCs-and is optimized for them. Its current-mode control and internal compensation ensure stability with low-ESR ceramics (e.g., 22 µF). Ceramic caps provide superior high-frequency bypassing, lower ripple, and better transient response than tantalum or electrolytic alternatives-making them ideal for noise-sensitive applications like HDD controllers and video SoCs powered by LM2830ZSDX/NOPB.
How is the output voltage programmed on the LM2830ZSDX/NOPB?
The output voltage of LM2830ZSDX/NOPB is programmed using a resistor divider between VOUT and GND, with the FB pin connected to the divider midpoint. The formula is VOUT = 0.6 V × (1 + R1/R2), where R2 is typically 10 kΩ to minimize bias current error. For example, setting VOUT = 3.3 V requires R1 = 45 kΩ (1% tolerance). The 0.6-V ±2% internal reference ensures total output accuracy remains within ±1.5% across line, load, and temperature when using 1% resistors.
LM2830ZSDX/NOPB 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/NOPB FAQ
1.How can I place an order for LM2830ZSDX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2830ZSDX/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 LM2830ZSDX/NOPB reliable?
The price and inventory of LM2830ZSDX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2830ZSDX/NOPB is usually 5 days.
3.What payment methods are accepted for LM2830ZSDX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2830ZSDX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2830ZSDX/NOPB?
LM2830ZSDX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2830ZSDX/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 LM2830ZSDX/NOPB?
For technical support, including LM2830ZSDX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2830ZSDX/NOPB requirements.
6.How does Aetrix verify that LM2830ZSDX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2830ZSDX/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 LM2830ZSDX/NOPB meets industry standards.
7.What is the process for return or replacement of LM2830ZSDX/NOPB?
All LM2830ZSDX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2830ZSDX/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 LM2830ZSDX/NOPB part is unused and in its original packaging.
Return procedure for LM2830ZSDX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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