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Texas Instruments LM2832XSD/NOPB
- Part No.:
- LM2832XSD/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
LM2832XSD/NOPB.pdf
- Description:
- IC REG BUCK ADJ 2A 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,107
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Product details
Overview
LM2832XSD/NOPB from Texas Instruments is a monolithic, high-frequency PWM step-down DC-DC regulator with an internal 150 mΩ PMOS switch, delivering up to 2.0A output current at 3.3V from a 5V input. It operates at a fixed 1.6 MHz switching frequency, features 0.6V ±2% internal reference, current-mode control, and integrated soft-start for inrush current limiting - deployed in compact local power supplies for USB-powered devices and set-top boxes.
For engineers reviewing the LM2832XSD/NOPB datasheet, LM2832XSD/NOPB pinout, LM2832XSD/NOPB application, or LM2832XSD/NOPB equivalent, key selection criteria include verified 1.6 MHz operation, WSON-6 package thermal performance (θJA = 80°C/W), 3.0–5.5V input range compatibility, and confirmed 2.0A continuous load capability with internal overvoltage and thermal protection.
Technical Context
The LM2832XSD/NOPB implements current-mode PWM control with internal compensation and a 0.6V feedback reference, enabling stable regulation across 3.0–5.5V input and 0.6–4.5V output ranges. Its 1.6 MHz fixed-frequency oscillator supports ultra-low on-times (~30 ns), allowing use of miniature surface-mount inductors and ceramic capacitors without external loop compensation.
It integrates pulse-by-pulse current limiting (typ. 3.25A), thermal shutdown at 165°C, undervoltage lockout (UVLO) with 2.73V turn-on and 430 mV hysteresis, and output overvoltage protection triggered at 15% above VFB. The device uses BiCMOS process technology and includes an internal soft-start ramp (600 µs) to control output voltage rise time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.6 MHz - enables use of ≤1.0 µH inductors and 22 µF ceramic output capacitors, minimizing PCB footprint. |
| Output Current | 2.0 A continuous - supported by internal 150 mΩ PMOS switch and cycle-by-cycle current limit (min. 2.4 A). |
| Input Voltage Range | 3.0 V to 5.5 V - compatible with single-cell Li-ion, USB 5V, and regulated 3.3V/5V rails. |
| Feedback Reference | 0.600 V ±2% - sets output voltage via external resistor divider; line regulation <0.02%/V ensures stability across input range. |
| Quiescent Current | 2.8–4.5 mA (switching), 30 nA (shutdown) - enables low-power standby in battery-operated systems. |
| Thermal Protection | 165°C shutdown with ~15°C hysteresis - prevents damage during sustained overload or poor heatsinking. |
| Package | 6-pin WSON (2.0 mm × 2.0 mm, 0.5 mm pitch) with exposed thermal pad - achieves θJA = 80°C/W with standard 4-layer PCB layout. |
Pinout & Package
The LM2832XSD/NOPB is housed in a 6-pin WSON package (2.0 mm × 2.0 mm, 0.5 mm pitch) with an exposed die attach pad (DAP) for enhanced thermal conduction to the PCB ground plane. The DAP must be soldered to a thermally robust copper area but cannot serve as the primary GND connection.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 FB | Feedback input | High-impedance node (IB < 100 nA) connected to resistor divider; regulates output by comparing divided VO to 0.6V reference. |
| 2 GND | Signal and power ground | Primary return path for feedback network and internal circuitry; place bottom resistor of divider adjacent to this pin. |
| 3 SW | Switch node | Drives external inductor and catch diode; swings from VIN to ~−0.4V (Schottky VF) during off-time. |
| 4 VIND | Main power input | Supplies internal PMOS switch; requires local 22 µF ceramic input capacitor with low ESL. |
| 5 VINA | Control supply | Bias rail for internal logic; must be tied directly to VIND on PCB to ensure proper UVLO and reference stability. |
| 6 EN | Enable input | Logic-high active (VEN_TH = 1.8V min); floating or >VINA + 0.3V may cause erratic operation. |
Key Features
| Feature | Design Value |
|---|---|
| Internal 150 mΩ PMOS switch | Enables 2.0A output without external MOSFET; reduces BOM count and layout complexity in space-constrained designs. |
| 1.6 MHz fixed-frequency PWM | Permits use of sub-1 µH shielded inductors and small X7R/X5R MLCCs, cutting solution size by >40% vs. 500 kHz alternatives. |
| 0.6V ±2% internal reference | Supports accurate output setting down to 0.6V; eliminates need for external precision reference or trimming. |
| Integrated soft-start (600 µs) | Controls output ramp rate to limit inrush current into bulk capacitance, preventing input rail sag and system reset. |
| Current-mode control with internal compensation | Delivers fast transient response (<10 µs recovery from 50% load step) without requiring external compensation components. |
Applications
| USB-Powered Devices | Set-Top Boxes |
|---|---|
Use Scenario: Powering FPGA I/O banks and USB PHY from a 5V bus in portable media adapters. IC Role / Device Role / Timing Role: Primary step-down regulator converting 5V USB power to stable 3.3V at up to 2.0A with minimal board area. Use Value: Eliminates need for discrete MOSFET + controller; 1.6 MHz operation allows full regulation with only 1.0 µH inductor and 22 µF ceramic output cap. | Use Scenario: Supplying core logic and tuner subsystems in cost-sensitive consumer STBs with tight thermal budgets. IC Role / Device Role / Timing Role: Local point-of-load converter delivering 3.3V/2.0A from main 5V rail, operating continuously under ambient temperatures up to +85°C. Use Value: Internal thermal shutdown (165°C) and 80°C/W θJA enable reliable operation without heatsinks in sealed enclosures. |
| HDD Core Power | Local 5V to Vcore Conversion |
Use Scenario: Providing regulated 1.8V core voltage to 2.5" HDD controller ICs in NAS enclosures. IC Role / Device Role / Timing Role: High-efficiency buck regulator supporting dynamic load steps typical of disk spin-up and seek operations. Use Value: Current-mode control delivers <10 µs transient response; 93% peak efficiency minimizes heat generation near sensitive storage components. | Use Scenario: Generating processor Vcore (1.2V–1.8V) from 5V rail in embedded industrial controllers with limited airflow. IC Role / Device Role / Timing Role: Compact, self-contained DC-DC stage replacing multi-chip solutions for low-voltage, medium-current applications. Use Value: 0.6V reference and wide output range (0.6–4.5V) allow precise Vcore tuning via resistor divider; no external compensation required. |
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 | 1.8–6.0V input, 1.6 MHz, 0.6V ref, 0.75A max - lower current rating and higher min input voltage. | Suitable for sub-1A loads where smaller solution size or tighter load regulation is prioritized over current capacity. | Select when 0.75A suffices and footprint reduction (1.2 mm × 0.8 mm DSBGA) outweighs need for 2.0A capability. |
| LM2678SD-3.3/NOPB | 4.0–40V input, 260 kHz, 3.3V fixed output, 5A max - wider input range, lower frequency, fixed-VOUT, larger SO-8 package. | Used in industrial 12V/24V systems requiring higher input tolerance and greater current headroom. | Choose for legacy 12V/24V input designs needing fixed 3.3V output and higher surge current capability, accepting larger size and lower switching frequency. |
Compared with TPS62231DRYR and LM2678SD-3.3/NOPB, the LM2832XSD/NOPB uniquely balances 2.0A output, 1.6 MHz operation, and WSON-6 compactness - making it optimal for USB-powered and space-constrained 5V-input applications where both current and size matter.
Availability
LM2832XSD/NOPB is available at Aetrix Electronics and suitable for USB-powered devices, set-top boxes, and HDD core power applications requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for LM2832XSD/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 LM2832XSD/NOPB belongs to TI's high-frequency monolithic buck regulator product line, engineered specifically for compact, low-noise, medium-current point-of-load conversion in consumer and computing applications.
FAQ
What is the maximum continuous output current of the LM2832XSD/NOPB?
The LM2832XSD/NOPB delivers up to 2.0A continuous output current under typical conditions (VIN = 5V, VOUT = 3.3V, TA = 25°C, with adequate PCB copper and thermal vias). Its cycle-by-cycle current limit is guaranteed ≥2.4A across temperature, and typical limit is 3.25A - ensuring robust overload handling without external current-sense circuitry.
Does the LM2832XSD/NOPB require external compensation components?
No, the LM2832XSD/NOPB uses internally compensated current-mode control architecture. This eliminates the need for external compensation networks (e.g., RC networks across error amplifier pins), simplifying design and reducing bill-of-materials. Stability is ensured across the full 0.6–4.5V output range and 3.0–5.5V input range with only the recommended input/output capacitors and inductor.
What package type and thermal characteristics does the LM2832XSD/NOPB use?
The LM2832XSD/NOPB is packaged in a 6-pin WSON (2.0 mm × 2.0 mm) with exposed thermal pad. Its thermal resistance is θJA = 80°C/W (with 4-layer PCB, 2 oz copper, and thermal vias under the pad) and θJC = 18°C/W. The DAP must be soldered to a solid ground plane but cannot replace the dedicated GND pin for signal integrity.
Can the LM2832XSD/NOPB operate with a 3.3V input to generate 1.8V output?
Yes, the LM2832XSD/NOPB supports input voltages from 3.0V to 5.5V and output voltages from 0.6V to 4.5V. At VIN = 3.3V and VOUT = 1.8V, it maintains regulation with typical efficiency >88% and full 2.0A capability - provided the inductor DCR and output capacitor ESR are minimized and thermal design meets θJA requirements.
How does the enable (EN) pin function on the LM2832XSD/NOPB?
The EN pin on the LM2832XSD/NOPB is a logic-high active enable input with threshold voltage VEN_TH = 1.8V (min). Pulling EN ≥1.8V enables regulation; pulling EN <0.4V disables the device, reducing quiescent current to 30 nA. The pin must never float or exceed VINA + 0.3V, and should be tied directly to a clean logic rail or microcontroller GPIO.
LM2832XSD/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:
- 2A
- Frequency - Switching:
- 1.6MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (3x3)
LM2832XSD/NOPB FAQ
1.How can I place an order for LM2832XSD/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2832XSD/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 LM2832XSD/NOPB reliable?
The price and inventory of LM2832XSD/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2832XSD/NOPB is usually 5 days.
3.What payment methods are accepted for LM2832XSD/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2832XSD/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2832XSD/NOPB?
LM2832XSD/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2832XSD/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 LM2832XSD/NOPB?
For technical support, including LM2832XSD/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2832XSD/NOPB requirements.
6.How does Aetrix verify that LM2832XSD/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2832XSD/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 LM2832XSD/NOPB meets industry standards.
7.What is the process for return or replacement of LM2832XSD/NOPB?
All LM2832XSD/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2832XSD/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 LM2832XSD/NOPB part is unused and in its original packaging.
Return procedure for LM2832XSD/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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