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Texas Instruments LM2832ZSD/NOPB
- Part No.:
- LM2832ZSD/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
LM2832ZSD/NOPB.pdf
- Description:
- IC REG BUCK ADJ 2A 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,784
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Product details
Overview
LM2832ZSD/NOPB from Texas Instruments is a monolithic, high-frequency PWM step-down DC-DC regulator with 3.0–5.5V input range, 3.0MHz fixed switching frequency, 0.6V internal reference, 150mΩ PMOS switch, and 2.0A output current capability-designed for compact local power conversion in USB-powered devices and set-top boxes.
For engineers reviewing the LM2832ZSD/NOPB datasheet, LM2832ZSD/NOPB pinout, LM2832ZSD/NOPB application, or LM2832ZSD/NOPB equivalent, key selection criteria include verified 3.0MHz operation, thermal shutdown at 165°C, 30nA shutdown current, ±2% feedback voltage accuracy over temperature, and WSON-6 package compatibility with high-density PCB layouts.
Technical Context
The LM2832ZSD/NOPB implements current-mode PWM control with internal compensation, enabling stable regulation without external loop components. Its 30ns minimum on-time supports high-frequency operation down to 0.6V output across the full 3V–5.5V input range.
It integrates undervoltage lockout (UVLO) with 2.73V rising threshold and 430mV hysteresis, cycle-by-cycle current limiting (typ. 3.25A), output overvoltage protection (15% above VFB), and internal soft-start (600µs ramp). The device uses BiCMOS process technology to achieve 150mΩ RDS(ON) in the WSON-6 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to USB 5V rails and single-cell Li-ion systems without pre-regulation. |
| Switching Frequency | 3.0MHz (typ.) - enables use of sub-1µH inductors and 10–22µF ceramic output capacitors for ultra-compact designs. |
| Output Current | 2.0A continuous - delivers sufficient power for FPGA I/O banks, microcontroller cores, and USB peripheral ICs. |
| Feedback Reference | 0.600V ±2% - sets output voltage via external resistor divider; enables precise 1.8V, 3.3V, or custom outputs with minimal error. |
| RDS(ON) | 150mΩ (WSON-6) - reduces conduction loss at high load, supporting >88% efficiency at 3.3V/1.75A with 5V input. |
| Quiescent Current | 4.3–6.5mA (active), 30nA (shutdown) - minimizes standby power in battery-backed or always-on applications. |
| Thermal Shutdown | 165°C activation - protects against sustained overload or poor heatsinking; resumes operation after junction cools to ~150°C. |
Pinout & Package
The LM2832ZSD/NOPB is packaged in a thermally enhanced 6-pin WSON (3mm × 3mm, 0.5mm pitch) with exposed die attach pad (DAP) for low thermal impedance to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB | Feedback input | High-impedance node sensing output voltage via resistor divider; requires short trace routing and local decoupling to avoid noise-induced regulation error. |
| GND | Signal and power ground | Primary return path for feedback network and internal circuitry; must be connected directly to PCB ground plane near FB resistor bottom leg. |
| SW | Switch node | Drives external inductor and catch diode; carries high di/dt; requires minimized loop area and tight coupling to GND and VIN paths. |
| VIND | Main power input | Supplies internal PMOS switch; must be decoupled with ≥22µF low-ESL ceramic capacitor placed adjacent to pin. |
| VINA | Control supply | Bias rail for internal logic and reference; tied directly to VIND on PCB to ensure stable operation under transient load conditions. |
| EN | Enable control | Active-high logic input; 1.8V threshold; floating state disables regulator; must not exceed VINA + 0.3V to prevent damage. |
Key Features
| Feature | Design Value |
|---|---|
| 3.0MHz fixed-frequency PWM | Enables <1µH inductors and eliminates audible noise while maintaining fast transient response for digital loads. |
| Internal 0.6V reference (±2%) | Provides accurate output voltage setting across –40°C to +125°C junction temperature range without external trimming. |
| 150mΩ PMOS switch (WSON-6) | Reduces conduction loss by ~25% vs. comparable 0.55MHz variants, improving full-load efficiency in space-constrained designs. |
| 600µs internal soft-start | Controls output ramp rate to limit inrush current into bulk capacitance, preventing input rail sag and system brownouts. |
| 30nA shutdown current | Extends battery life in portable USB devices by minimizing quiescent drain when powered off or in sleep mode. |
Applications
| USB-Powered Devices | Set-Top Boxes |
|---|---|
Use Scenario: Powering USB-C peripherals requiring regulated 3.3V/2.0A from a 5V bus without external LDO post-regulation. IC Role / Device Role / Timing Role: Primary step-down regulator converting USB 5V to stable 3.3V for SoC I/O, USB PHY, and memory interfaces. Use Value: Eliminates need for discrete MOSFET + controller solution; achieves >88% efficiency at full load with <10mm² total footprint. | Use Scenario: Supplying core logic voltage (1.8V or 3.3V) to MPEG decoder ASICs and HDMI transmitter ICs in consumer STB platforms. IC Role / Device Role / Timing Role: Local point-of-load converter delivering clean, low-noise power with fast transient response to handle burst video decoding loads. Use Value: Maintains regulation during 100mA–2A load steps within 50µs; 3.0MHz switching avoids interference with RF front-end and audio subsystems. |
| HDD Core Power | DSL Modems |
Use Scenario: Generating 1.8V or 2.5V for HDD controller ASICs and NAND flash interface circuits in portable storage enclosures. IC Role / Device Role / Timing Role: High-efficiency buck regulator operating from 5V SATA or USB power, supporting dynamic voltage scaling during spin-up and idle modes. Use Value: Delivers 2.0A peak current with <100mV output deviation during 1A load transients; thermal shutdown prevents damage during enclosure overheating. | Use Scenario: Providing 3.3V/1.5A to ADSL2+ line driver and DSP ICs in compact residential modems with limited board area. IC Role / Device Role / Timing Role: Compact, self-contained DC-DC converter replacing discrete solutions to meet stringent EMI limits and thermal constraints. Use Value: Meets EN55022 Class B radiated emissions with standard layout; 30nA shutdown current extends standby time during DSL link idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2832XSD/NOPB | 1.6MHz switching frequency, lower quiescent current (3.3–5mA), same 150mΩ RDS(ON) | Better light-load efficiency; larger inductors required; less suitable for ultra-compact layouts | Select when optimizing for efficiency below 200mA or where EMI filtering is prioritized over size. |
| TPS62231DRVR | 3.0MHz, 2A, 0.6V reference, but uses different control architecture (DCS-Control™) and 6-pin WSON-6 package | Superior transient response (<10µs recovery), higher light-load efficiency, no external compensation needed | Choose when fastest load-step response or highest efficiency across wide load range is critical; verify layout compatibility. |
Compared with LM2832XSD/NOPB, the LM2832ZSD/NOPB trades slightly higher active quiescent current for smaller passive components and tighter layout control; versus TPS62231DRVR, it offers proven TI BiCMOS reliability and simpler design validation but lacks adaptive control for extreme transient scenarios.
Availability
LM2832ZSD/NOPB is available at Aetrix Electronics and suitable for USB-powered devices, set-top boxes, HDD core power supplies, and DSL modems requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LM2832ZSD/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 ICs, with decades of expertise in high-efficiency DC-DC conversion.
The LM2832 product line delivers compact, high-frequency step-down regulators targeting space-constrained applications such as portable electronics, broadband infrastructure, and consumer audio/video equipment.
FAQ
What is the maximum output current supported by the LM2832ZSD/NOPB?
The LM2832ZSD/NOPB is rated for 2.0A continuous output current under specified thermal conditions (TJ ≤ 125°C, proper PCB copper area and thermal vias). Its typical current limit is 3.25A, with a minimum ensured limit of 2.4A across temperature and input voltage ranges. Sustained 2.0A operation requires adequate thermal management using the exposed DAP pad connected to a multi-layer ground plane.
Does the LM2832ZSD/NOPB require external compensation components?
No, the LM2832ZSD/NOPB features fully internal compensation optimized for stability with standard ceramic output capacitors (≥22µF, X5R/X7R). This eliminates the need for external RC networks or type-II/type-III compensators, simplifying design and reducing BOM count. Stability is maintained across the full 0.6V–4.5V output range and 3V–5.5V input range without user adjustment.
What is the purpose of the VINA pin on the LM2832ZSD/NOPB?
The VINA pin on the LM2832ZSD/NOPB supplies bias voltage to the internal control circuitry, including the error amplifier, oscillator, and reference. It must be connected directly to VIND on the PCB to ensure consistent performance under input transients. Separating VINA from VIND is not recommended, as it may cause regulation instability or premature UVLO triggering during load steps.
Can the LM2832ZSD/NOPB operate with an input voltage below 3.0V?
No-the LM2832ZSD/NOPB has a specified operating input voltage range of 3.0V to 5.5V. Its undervoltage lockout (UVLO) activates below 2.73V (typ.), disabling switching until VIN rises above this threshold. Operation below 3.0V is outside absolute maximum ratings and may result in unpredictable behavior, regulation failure, or damage due to insufficient gate drive for the internal PMOS switch.
How does the LM2832ZSD/NOPB implement overvoltage protection?
The LM2832ZSD/NOPB monitors the FB pin voltage and compares it to a threshold set at 15% above the internal 0.6V reference (i.e., ~0.69V). If FB exceeds this level-indicating output overvoltage-the internal PMOS switch is immediately disabled, allowing the output to discharge through the catch diode and load. Recovery occurs automatically once FB falls below the threshold, restoring normal regulation without requiring reset or external intervention.
LM2832ZSD/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:
- 3MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (3x3)
LM2832ZSD/NOPB FAQ
1.How can I place an order for LM2832ZSD/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2832ZSD/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 LM2832ZSD/NOPB reliable?
The price and inventory of LM2832ZSD/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2832ZSD/NOPB is usually 5 days.
3.What payment methods are accepted for LM2832ZSD/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2832ZSD/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2832ZSD/NOPB?
LM2832ZSD/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2832ZSD/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 LM2832ZSD/NOPB?
For technical support, including LM2832ZSD/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2832ZSD/NOPB requirements.
6.How does Aetrix verify that LM2832ZSD/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2832ZSD/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 LM2832ZSD/NOPB meets industry standards.
7.What is the process for return or replacement of LM2832ZSD/NOPB?
All LM2832ZSD/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2832ZSD/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 LM2832ZSD/NOPB part is unused and in its original packaging.
Return procedure for LM2832ZSD/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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