My Inquiry
My Account
Texas Instruments LM2832XSD
- Part No.:
- LM2832XSD
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
LM2832XSD.pdf
- Description:
- IC REG BUCK ADJ 2A 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,798
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2832XSD from Texas Instruments is a monolithic, high-frequency PWM step-down DC-DC regulator delivering 2.0A output current with internal 150 mΩ PMOS switch, fixed 1.6 MHz switching frequency, and 0.6 V ±2% internal reference voltage. It operates from 3.0V to 5.5V input and regulates down to 0.6V output-optimized for compact local power conversion in space-constrained USB-powered devices and set-top boxes.
For engineers reviewing the LM2832XSD datasheet, LM2832XSD pinout, LM2832XSD application, or LM2832XSD equivalent, key selection criteria include its WSON-6 package thermal performance (θJA = 80°C/W), 30 ns minimum on-time capability, cycle-by-cycle current limit (2.4A min), thermal shutdown at 165°C, and ultra-low 30 nA shutdown current-critical for battery-backed and always-on subsystems.
Technical Context
The LM2832XSD employs current-mode PWM control with internal compensation and an artificial ramp for stability across wide load and line variations. Its 1.6 MHz fixed-frequency oscillator enables use of sub-2.2 µH inductors and low-ESR ceramic capacitors while maintaining fast transient response.
It integrates soft-start (600 µs ramp), overvoltage protection (15% above VFB), undervoltage lockout (2.73 V rising threshold, 430 mV hysteresis), and thermal shutdown-enabling robust single-chip regulation without external loop compensation or protection circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.6 MHz - enables <2.2 µH inductors and small 22 µF ceramic output capacitors, minimizing PCB footprint |
| Output Current | 2.0 A continuous - supports core rails for HDDs, USB peripherals, and DSL modems without external pass devices |
| Input Voltage Range | 3.0 V to 5.5 V - compatible with single-cell Li-ion, 3.3 V/5 V system rails, and USB 2.0/3.0 bus power |
| Feedback Reference | 0.600 V ±2% - sets output voltage via resistor divider; enables 0.6 V to 4.5 V programmable range with <±1% load regulation |
| Quiescent Current | 2.8–4.5 mA (switching), 30 nA (shutdown) - ensures >90% efficiency at light loads and ultra-low standby drain in always-on applications |
| Thermal Shutdown | 165°C activation, ~150°C recovery - protects against sustained overload or poor heatsinking without latch-up |
| Current Limit | 2.4 A minimum (typ. 3.25 A) - provides cycle-by-cycle overcurrent protection; avoids need for external current-sense resistors |
Pinout & Package
The LM2832XSD is packaged in a thermally enhanced 6-pin WSON (3 mm × 3 mm, 0.65 mm 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 and local GND to minimize noise-induced regulation error |
| GND | Signal and power ground | Primary return path for feedback network and internal control circuitry; must be connected near bottom resistor of FB divider |
| SW | Switch node | Drives external inductor and catch diode; carries high di/dt; requires minimal trace length and tight loop area to reduce EMI |
| VIND | Main power input | Supplies internal PMOS switch; requires local 22 µF ceramic input capacitor with low ESL placed adjacent to pin |
| VINA | Control supply | Bias rail for internal logic and reference; must be tied directly to VIND on PCB-no series resistance or filtering |
| EN | Enable control | Active-high logic input; 1.8 V threshold; floating or >VINA + 0.3 V prohibited-requires pull-down if unused |
Key Features
| Feature | Design Value |
|---|---|
| 150 mΩ PMOS switch | Enables ≥93% peak efficiency at 2 A with minimal conduction loss; eliminates need for external high-side FET |
| Internal soft-start (600 µs) | Controls output voltage ramp rate to limit inrush current into downstream capacitance-prevents input rail collapse |
| 0.6 V ±2% reference | Provides stable, temperature-compensated feedback point enabling accurate output setting across –40°C to +125°C |
| 30 ns minimum on-time | Supports high VIN-to-VOUT ratios (e.g., 5 V → 0.6 V) at 1.6 MHz without pulse-skipping or mode transition artifacts |
| 30 nA shutdown current | Allows integration into battery-critical paths (e.g., USB suspend, remote control receivers) with negligible standby drain |
Applications
| USB-Powered Devices | Set-Top Boxes |
|---|---|
Use Scenario: Powering FPGA I/O banks and USB PHY from 5 V bus in portable media adapters. IC Role / Device Role / Timing Role: Primary step-down regulator converting 5 V USB power to stable 3.3 V/1.8 V rails with fast load transient response. Use Value: Delivers 2.0 A at 93% efficiency with no external compensation-reducing BOM count and layout area by >40% vs. discrete solutions. | Use Scenario: Generating 1.2 V core voltage for MPEG decoder SoC from 3.3 V intermediate rail. IC Role / Device Role / Timing Role: High-frequency buck converter supplying low-noise, tightly regulated core power with <1% output deviation under 2 A dynamic load steps. Use Value: 1.6 MHz operation allows 1.5 µH shielded inductor and 22 µF X7R MLCC-achieving <10 mm² total solution size. |
| HDD Core Power | DSL Modems |
Use Scenario: Providing 1.2 V/2.0 A for 2.5″ hard disk drive controller ASIC during spin-up and data transfer bursts. IC Role / Device Role / Timing Role: High-current, thermally robust DC-DC regulator with integrated current limiting and thermal shutdown. Use Value: 2.4 A guaranteed current limit and 165°C thermal shutdown prevent damage during HDD stall conditions without external monitoring. | Use Scenario: Converting 5 V wall adapter output to 3.3 V for ADSL line driver and Ethernet PHY in residential gateways. IC Role / Device Role / Timing Role: Compact, high-efficiency point-of-load regulator supporting dual-rail operation with independent enable control. Use Value: EN pin enables synchronized power sequencing with upstream 5 V supply; 30 nA shutdown current meets Energy Star standby requirements. |
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 | 1.8 MHz switching frequency; 0.6 V reference; 2.0 A rating; 2.05 V–6.0 V input range | Wider input range supports 3.3 V–5 V systems; higher frequency allows smaller magnetics but increases switching loss at high load | Select when input may dip below 3.0 V or when board space permits tighter inductor sizing |
| MP2108DJ-LF-Z | 1.5 MHz switching frequency; 0.6 V reference; 2.0 A rating; 2.5 V–5.5 V input range; 120 mΩ RDS(ON) | Lower RDS(ON) improves heavy-load efficiency; lacks OVP and has different UVLO thresholds (2.3 V) | Select for highest efficiency at full load where overvoltage protection is handled externally |
Compared with TPS62231DRVR and MP2108DJ-LF-Z, the LM2832XSD offers superior thermal protection (165°C shutdown with hysteresis), integrated OVP, and proven 1.6 MHz stability with minimal external components-making it optimal for cost-sensitive, reliability-critical consumer electronics where layout simplicity and fault coverage are prioritized over marginal efficiency gains.
Availability
LM2832XSD is available at Aetrix Electronics and suitable for USB-powered devices, set-top boxes, HDD core power, and DSL modems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LM2832XSD 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 and automotive-grade reliability.
The LM2832XSD belongs to TI's high-frequency, integrated-PFET buck regulator product line-designed specifically for space-constrained, high-current point-of-load applications in consumer, computing, and communications equipment where minimal external components and robust protection are mandatory.
FAQ
What is the maximum output current supported by the LM2832XSD?
The LM2832XSD delivers up to 2.0 A continuous output current under typical operating conditions (TJ ≤ 125°C, 5 V input, 3.3 V output). Its guaranteed minimum current limit is 2.4 A, with typical value of 3.25 A, providing margin for transient peaks. Derating applies above 85°C ambient due to thermal constraints-full 2.0 A is maintained with proper PCB copper area and thermal vias under the DAP.
Does the LM2832XSD require external compensation components?
No, the LM2832XSD uses internally compensated current-mode control and does not require external compensation components. Its stable operation is verified across the full 0.6 V–4.5 V output range with standard 22 µF ceramic output capacitors and recommended inductor values. This eliminates design iteration time and reduces BOM cost versus externally compensated regulators.
What is the purpose of the VINA pin on the LM2832XSD?
The VINA pin supplies bias voltage to the internal control circuitry-including the error amplifier, reference, and oscillator-and must be connected directly to VIND on the PCB with no series resistance or filtering. Separating VINA from VIND prevents noise coupling into sensitive analog blocks and ensures stable reference and soft-start behavior, especially under high di/dt input transients.
Can the LM2832XSD operate with a 3.0 V input and 1.2 V output?
Yes, the LM2832XSD supports 3.0 V to 5.5 V input and can regulate down to 0.6 V output. At 3.0 V input and 1.2 V output, the required duty cycle is ~40%, well within its 2–96% operational range. The 30 ns minimum on-time ensures stable PWM operation even at this low VOUT/VIN ratio, avoiding pulse-skipping or audible noise issues common in low-duty-cycle applications.
How does the LM2832XSD handle overvoltage events on the output?
The LM2832XSD includes internal overvoltage protection (OVP) that monitors the FB pin. If the FB voltage exceeds 15% above the 0.6 V reference (i.e., >0.69 V), 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 OVP threshold-no latch or manual reset is required, ensuring robust self-protection during load-dump or feedback-divider failure.
LM2832XSD 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:
- 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 FAQ
1.How can I place an order for LM2832XSD through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2832XSD 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 reliable?
The price and inventory of LM2832XSD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2832XSD is usually 5 days.
3.What payment methods are accepted for LM2832XSD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2832XSD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2832XSD?
LM2832XSD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2832XSD 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?
For technical support, including LM2832XSD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2832XSD requirements.
6.How does Aetrix verify that LM2832XSD is sourced from the original manufacturer or authorized distributors?
All LM2832XSD 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 meets industry standards.
7.What is the process for return or replacement of LM2832XSD?
All LM2832XSD units undergo pre-shipment inspection (PSI). If there is an issue with LM2832XSD, 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 part is unused and in its original packaging.
Return procedure for LM2832XSD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2832XSD Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
