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Texas Instruments LM2832XMY/NOPB
- Part No.:
- LM2832XMY/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LM2832XMY/NOPB.pdf
- Description:
- IC REG BUCK ADJ 2A 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,717
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Product details
Overview
LM2832XMY/NOPB from Texas Instruments is a monolithic, high-frequency PWM step-down DC-DC regulator in an 8-pin eMSOP-PowerPAD package, delivering up to 2.0A output current at 3.3V from a 5V input. It integrates a 150 mΩ PMOS switch, features 1.6 MHz fixed switching frequency, 0.6 V ±2% internal reference, and operates across 3.0–5.5 V input range. Used in compact local power conversion for USB-powered devices and set-top boxes.
For engineers reviewing the LM2832XMY/NOPB datasheet, LM2832XMY/NOPB pinout, LM2832XMY/NOPB application, or LM2832XMY/NOPB equivalent, key selection criteria include verified 2.0A load capability, thermal shutdown at 165°C, EN-controlled ultra-low shutdown current (30 nA), and compatibility with ceramic output capacitors for minimal PCB footprint.
Technical Context
The LM2832XMY/NOPB employs current-mode PWM control with internal compensation, enabling stable regulation without external loop components. Its 1.6 MHz switching frequency supports sub-2 mm × 2 mm inductor sizing and allows use of low-ESR ceramic capacitors for fast transient response.
It integrates soft-start (600 µs ramp), overvoltage protection (15% above 0.6 V reference), undervoltage lockout (2.73 V turn-on, 2.3 V turn-off with 430 mV hysteresis), and cycle-by-cycle current limiting (typ. 3.25 A). Thermal shutdown activates at 165°C with ~15°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 5.5 V - supports direct connection to USB 5 V or single-cell Li-ion systems without pre-regulation. |
| Output Current | 2.0 A continuous - sufficient for powering FPGA I/O banks or ARM Cortex-A series core logic rails. |
| Switching Frequency | 1.6 MHz - enables use of ≤1.0 µH inductors and eliminates audible noise in consumer audio applications. |
| Feedback Reference | 0.600 V ±2% - sets output voltage via resistor divider; enables precise 3.3 V, 2.5 V, or 1.8 V regulation with <±1% total error. |
| Quiescent Current | 2.8–4.5 mA (switching), 30 nA (shutdown) - ensures >100-hour battery life in always-on USB peripherals during standby. |
| Thermal Shutdown | 165°C activation - protects against sustained overload or poor heatsinking in enclosed industrial enclosures. |
| Package Thermal Resistance | θJA = 80°C/W (eMSOP-PowerPAD) - requires ≥4 thermal vias to ground plane for full 2 A operation at 50°C ambient. |
Pinout & Package
The LM2832XMY/NOPB is housed in an 8-pin eMSOP-PowerPAD package with exposed die attach pad (DAP) for enhanced thermal dissipation. DAP must be soldered to system ground but cannot serve as primary GND return path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIND | Power Input Supply | Main input voltage rail (3.0–5.5 V); connects directly to input capacitor and must be decoupled within 3 mm of pin. |
| VINA | Control Circuitry Supply | Bias supply for internal logic; must be tied to VIND on PCB-no separate filtering required. |
| GND (Pins 3, 5, 7) | Signal & Power Ground | Shared return for feedback network, SW node, and internal circuits; bottom resistor of FB divider must locate adjacent to Pin 3. |
| EN | Enable Control Input | Active-high logic enable; floating or >VINA + 0.3 V causes undefined behavior; 0.4 V threshold ensures clean startup from microcontroller GPIO. |
| FB | Feedback Input | High-impedance (≤100 nA bias) node sensing output voltage via resistor divider; trace must be short and shielded from SW node noise. |
| SW | Switch Node Output | Drives external inductor and catch diode; exhibits fast 0 → VIN and VIN → –0.7 V transitions; requires tight layout to minimize EMI. |
| DAP | Die Attach Pad | Thermal interface only; must be soldered to solid ground plane with ≥4 thermal vias-no electrical connection intended. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 150 mΩ PMOS Switch | Eliminates need for external high-side FET and gate driver, reducing BOM count and layout complexity in space-constrained designs. |
| Internal Soft-Start (600 µs) | Prevents inrush current into output capacitors during power-up, avoiding brownout in shared 5 V rails and reducing stress on input bulk capacitors. |
| Current-Mode PWM Control | Provides inherent line and load transient immunity without external compensation components-stable with 22 µF ceramic output capacitance. |
| Overvoltage Protection (OVP) | Shuts down SW when FB exceeds 0.69 V (15% above 0.6 V), protecting downstream 3.3 V logic from fault-induced overvoltage events. |
| Ultra-Low Shutdown Current (30 nA) | Enables true "off" state in battery-backed systems-critical for IoT sensors requiring multi-year shelf life before deployment. |
Applications
| USB-Powered Peripherals | Set-Top Box Core Rails |
|---|---|
Use Scenario: Powering HDMI transceivers, USB PHYs, and microcontrollers from a single 5 V USB port in portable media adapters. IC Role / Device Role / Timing Role: Primary step-down regulator converting 5 V USB input to stable 3.3 V/1.8 V rails with <10 µs transient recovery. Use Value: Enables full functionality from bus-powered design without external wall adapter-reducing cost and size by eliminating secondary power stage. | Use Scenario: Generating 1.2 V and 3.3 V supplies for SoC cores and interface logic in cable/satellite STBs operating in thermally dense chassis. IC Role / Device Role / Timing Role: Local point-of-load regulator placed adjacent to processor package, minimizing IR drop and noise coupling. Use Value: Delivers 2.0 A at 93% peak efficiency while maintaining junction temperature below 125°C under 50°C ambient-enabling fanless enclosure design. |
| HDD Head Actuator Drivers | DSL Modem Line Cards |
Use Scenario: Supplying regulated 3.3 V to voice coil motor drivers and servo controllers in 2.5-inch laptop HDDs with strict EMI limits. IC Role / Device Role / Timing Role: High-frequency buck converter synchronized to system clock to avoid interference with read/write channel analog front-end. Use Value: 1.6 MHz operation places switching harmonics beyond 100 MHz-preventing corruption of 100+ MB/s SATA data streams. | Use Scenario: Providing isolated 3.3 V and 5 V rails for ADSL2+ PHY, DSP, and Ethernet MAC in residential DSL gateways. IC Role / Device Role / Timing Role: Secondary regulator fed from main 12 V DC-DC stage, supporting burst-mode traffic with <50 µs load-step response. Use Value: Internal current-mode control maintains ±1.5% output regulation across 0–2 A load steps-ensuring clean signal integrity for QAM64/QAM256 modulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYT | 1.8–6.5 V input, 3 MHz switching, 0.6 V reference, 0.95 Ω switch RDS(ON), 0.6 A max output | Lower current rating; optimized for ultra-low IQ (17 µA) in always-on sensor nodes-not suitable for 2 A loads. | Select only if load current ≤600 mA and 3 MHz operation is mandatory for EMI filtering. |
| MP2307DN-LF-Z | 4.5–23 V input, 500 kHz switching, 0.8 V reference, 120 mΩ switch, 3 A output, no OVP or soft-start | Wider input range and higher current, but lacks integrated OVP, soft-start, and thermal shutdown-requires external protection circuitry. | Choose only for industrial 12 V input systems where external fault management is already implemented. |
Compared with TPS62231DRYT and MP2307DN-LF-Z, the LM2832XMY/NOPB uniquely balances 2.0 A capability, 1.6 MHz frequency, integrated protection features, and compact eMSOP-PowerPAD packaging-making it optimal for USB-powered consumer electronics where safety, size, and reliability are co-prioritized.
Availability
LM2832XMY/NOPB is available at Aetrix Electronics and suitable for USB-powered devices, set-top box core rails, HDD actuator drivers, and DSL modem line cards requiring stable component supply with consistent parametric performance across production lots.
Supply support for LM2832XMY/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 consumer and computing applications-designed specifically to replace discrete buck solutions with minimal external components and guaranteed thermal robustness.
FAQ
What is the maximum recommended output current for LM2832XMY/NOPB under continuous operation?
The LM2832XMY/NOPB is rated for 2.0 A continuous output current when used with proper PCB thermal design-including soldered DAP, ≥4 thermal vias to ground plane, and 2 oz copper layers. At 5 V input and 3.3 V output, full 2 A load yields ~88% efficiency and junction temperature remains below 125°C at 50°C ambient per TI SNVS455A test data.
Does LM2832XMY/NOPB require external compensation components?
No, the LM2832XMY/NOPB uses internally compensated current-mode control architecture. No external compensation network is needed-only the FB resistor divider, input/output capacitors, inductor, and catch diode are required for basic operation. This simplifies design validation and reduces bill-of-materials cost.
Can LM2832XMY/NOPB operate with a 3.3 V input to generate 1.8 V output?
Yes, LM2832XMY/NOPB supports input voltages from 3.0 V to 5.5 V. With 3.3 V input and 1.8 V output, the device achieves ~90% efficiency at 1 A load and maintains stable regulation down to minimum duty cycle (~2%). The 1.6 MHz switching frequency ensures minimal inductor size even at this low VIN/VOUT ratio.
What is the purpose of the DAP (Die Attach Pad) on LM2832XMY/NOPB?
On the LM2832XMY/NOPB, the DAP is a thermally conductive exposed pad that must be soldered to the PCB ground plane using ≥4 thermal vias. It provides the primary thermal path from silicon die to ambient-reducing θJA from >120°C/W to 80°C/W. It is not electrically connected and must never be used as a current-carrying GND path.
How does the enable (EN) pin function on LM2832XMY/NOPB?
The EN pin on LM2832XMY/NOPB is an active-high logic input with 0.4 V typical threshold. Pulling EN ≥1.8 V enables regulation; pulling EN ≤0.4 V forces shutdown with 30 nA quiescent current. The pin must never float-TI recommends tying to VIN through a 100 kΩ resistor if unused, or driving directly from MCU GPIO with appropriate level translation.
LM2832XMY/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) 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:
- 8-HVSSOP
LM2832XMY/NOPB FAQ
1.How can I place an order for LM2832XMY/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2832XMY/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 LM2832XMY/NOPB reliable?
The price and inventory of LM2832XMY/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2832XMY/NOPB is usually 5 days.
3.What payment methods are accepted for LM2832XMY/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2832XMY/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2832XMY/NOPB?
LM2832XMY/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2832XMY/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 LM2832XMY/NOPB?
For technical support, including LM2832XMY/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2832XMY/NOPB requirements.
6.How does Aetrix verify that LM2832XMY/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2832XMY/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 LM2832XMY/NOPB meets industry standards.
7.What is the process for return or replacement of LM2832XMY/NOPB?
All LM2832XMY/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2832XMY/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 LM2832XMY/NOPB part is unused and in its original packaging.
Return procedure for LM2832XMY/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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