My Inquiry
My Account
Texas Instruments LM2832YSDX/NOPB
- Part No.:
- LM2832YSDX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
LM2832YSDX/NOPB.pdf
- Description:
- IC REG BUCK ADJ 2A 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,917
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2832YSDX/NOPB from Texas Instruments is a monolithic, current-mode PWM step-down DC-DC regulator in an 8-pin eMSOP-PowerPAD package, delivering 2.0A output at 3.3V from a 5V input. It integrates a 150 mΩ PMOS switch, features 0.6V ±2% internal reference, 550 kHz fixed switching frequency, and supports fast transient response in space-constrained power rails for USB-powered devices and set-top boxes.
For engineers reviewing the LM2832YSDX/NOPB datasheet, LM2832YSDX/NOPB pinout, LM2832YSDX/NOPB application, or LM2832YSDX/NOPB equivalent, key selection criteria include verified 550 kHz operation, thermal shutdown at 165°C, 30 nA shutdown current, internal soft-start (600 µs), and output overvoltage protection triggered at FB = 1.15 × VREF.
Technical Context
The LM2832YSDX/NOPB implements constant-frequency current-mode PWM control with internal compensation, enabling stable regulation without external loop components. Its architecture includes pulse-by-pulse current limiting (3.25A typ), undervoltage lockout (UVLO) with 430 mV hysteresis, and a dedicated feedback amplifier referenced to a trimmed 0.6V bandgap.
It uses a high-speed 0.5 µm BiCMOS process to achieve 30 ns minimum on-time, supporting high duty-cycle operation down to 0.6V output across the 3.0–5.5V input range. The eMSOP-PowerPAD package integrates a thermally enhanced Die Attach Pad connected to system ground for junction-to-ambient thermal resistance of 80°C/W (with 2 oz copper, 4-layer board).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 550 kHz - enables use of sub-2.2 µH inductors and ceramic capacitors under 22 µF for compact layout |
| Output Current | 2.0A continuous - sufficient for core power in HDDs and USB peripherals without external current boosting |
| Input Voltage Range | 3.0V to 5.5V - 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; enables 3.3V @ 2.0A with R1/R2 ratio of 4.5 |
| Quiescent Current | 2.8–4.5 mA (switching), 30 nA (shutdown) - minimizes standby loss in battery-backed systems |
| Thermal Shutdown | 165°C activation, ~150°C recovery - protects against sustained overload or poor PCB thermal design |
| Enable Threshold | VEN_TH = 1.8V (min), 0.4V (max shutdown) - supports direct logic-level enable from 1.8V/3.3V microcontrollers |
Pinout & Package
The LM2832YSDX/NOPB is housed in an 8-pin eMSOP-PowerPAD package (4.9 mm × 6.0 mm × 1.05 mm) with exposed thermal pad (DAP) requiring solder connection to PCB ground plane for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIND | Power input supply | Main VIN path to internal PMOS switch; must be decoupled with ≥22 µF ceramic capacitor near pin |
| VINA | Control circuitry supply | Bias rail for internal logic; must be tied directly to VIND on PCB to avoid noise coupling |
| GND (Pins 3,5,7) | Signal & power ground | Primary return for feedback network and power paths; bottom resistor of FB divider must connect here |
| EN | Enable control input | Active-high logic interface; floating or >VINA+0.3V causes undefined behavior |
| FB | Feedback input | High-impedance node (100 nA bias); connects to resistor divider; trace must be short and noise-shielded |
| SW | Switch node | Drives external inductor and catch diode; high dv/dt node requiring tight layout and minimal parasitic inductance |
| DAP | Die Attach Pad | Thermal interface only - must be soldered to solid ground plane with ≥4 thermal vias; not a functional GND |
Key Features
| Feature | Design Value |
|---|---|
| Internal soft-start | 600 µs ramp time prevents inrush current into output capacitors during power-up |
| Output overvoltage protection | Triggers at FB = 1.15 × 0.6V (0.69V), disabling SW until fault clears - protects downstream 3.3V logic |
| Pulse-by-pulse current limit | 3.25A typical switch current limit prevents damage during short-circuit or startup overload |
| Thermal shutdown with hysteresis | 165°C trip / ~150°C recovery ensures safe cooldown before resuming operation |
| Current-mode PWM control | Enables inherent line/load transient response and eliminates need for external compensation network |
Applications
| Local 5V to Vcore Step-Down Converters | Core Power in HDDs |
|---|---|
Use Scenario: Converting 5V USB or SATA supply to 3.3V core rail for HDD controller ICs and motor drivers. IC Role / Device Role / Timing Role: Primary buck regulator providing regulated 3.3V @ 2.0A with <1% load regulation and <50 mV line regulation. Use Value: Eliminates need for external current-sense resistors or compensation components, reducing BOM count by ≥3 parts vs discrete solutions. | Use Scenario: Powering spindle motor driver and servo control logic in 2.5-inch HDDs where board area and thermal density are constrained. IC Role / Device Role / Timing Role: High-efficiency (88% at 1.75A, 5V→3.3V) step-down converter with integrated 150 mΩ PMOS switch and 550 kHz switching. Use Value: Enables use of 1.5 µH shielded inductors and 22 µF X7R MLCCs, shrinking total solution size to <120 mm². |
| Set-Top Boxes | USB Powered Devices |
Use Scenario: Generating 3.3V auxiliary rail from 5V USB-C or wall adapter input in low-cost STB mainboards. IC Role / Device Role / Timing Role: Compact, low-noise DC-DC converter with internal soft-start and OVP, meeting CE/UL conducted emission limits. Use Value: Achieves <15 mVpp output ripple with ceramic output caps, avoiding EMI issues common with tantalum-based designs. | Use Scenario: Powering portable media players, Bluetooth headsets, or USB hubs requiring regulated 3.3V from 5V upstream port. IC Role / Device Role / Timing Role: Ultra-low quiescent current (30 nA shutdown) buck regulator with logic-level EN for host-controlled power sequencing. Use Value: Extends battery life by minimizing standby drain while maintaining fast wake-up (<1 ms) from shutdown state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2832XSDX/NOPB | 1.6 MHz switching frequency, higher DMAX (96%), lower θJA (80°C/W) | Better suited for ultra-compact layouts needing <1 µH inductors and tighter ripple specs | Select when board area is critical and input voltage remains ≥4.5V; verify thermal margin at full 2A load |
| TPS62231DRVR | 3 MHz sync buck, 0.6V ref, 2A, but requires external compensation and has no OVP | Lacks integrated overvoltage protection and thermal shutdown; needs additional fault monitoring | Choose only if 3 MHz operation and synchronous rectification outweigh missing safety features |
Compared with LM2832XSDX/NOPB, the LM2832YSDX/NOPB trades higher frequency for improved light-load efficiency and lower EMI; versus TPS62231DRVR, it provides integrated protection and simpler layout at the cost of slightly larger passive components.
Availability
LM2832YSDX/NOPB is available at Aetrix Electronics and suitable for local 5V-to-3.3V conversion, HDD core power, and USB-powered device applications requiring stable component supply, long-term lifecycle support, and TI-qualified automotive-grade reliability.
Supply support for LM2832YSDX/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-reliability DC-DC conversion.
The LM2832 product line delivers compact, high-efficiency step-down regulators for space- and thermal-constrained applications including consumer electronics, storage, and USB-powered systems - designed to replace linear regulators and discrete buck solutions.
FAQ
What is the exact switching frequency of LM2832YSDX/NOPB?
The LM2832YSDX/NOPB has a factory-trimmed fixed switching frequency of 550 kHz, with guaranteed range of 400 kHz to 700 kHz over temperature (−40°C to +125°C) and input voltage (3.0V to 5.5V). This value is confirmed in the Electrical Characteristics table of SNVS455A Rev. April 2013, and is distinct from the 1.6 MHz (X) and 3.0 MHz (Z) variants.
Does LM2832YSDX/NOPB require external compensation components?
No, the LM2832YSDX/NOPB uses internally compensated current-mode control architecture. No external compensation network (e.g., type-II or type-III compensator) is required - only the FB resistor divider, input/output capacitors, inductor, and catch diode are needed for full operation per the Typical Application Circuit in the datasheet.
Can LM2832YSDX/NOPB operate with a 3.3V input to generate 3.3V output?
No - the LM2832YSDX/NOPB is a buck (step-down) regulator only and cannot achieve unity-gain or boost operation. Minimum output voltage is 0.6V, but minimum input must exceed output by sufficient margin to sustain regulation: at 3.3V output, VIN must be ≥3.6V (accounting for diode drop and RDSON losses). For 3.3V-in/3.3V-out, a LDO or buck-boost is required.
What is the maximum output current capability of LM2832YSDX/NOPB at 5V input and 3.3V output?
The LM2832YSDX/NOPB delivers up to 2.0A continuous output current at 5V input → 3.3V output under standard conditions (TA = 25°C, 2 oz copper, 4-layer PCB, 22 µF input/output caps). Derating applies above 85°C ambient or with inadequate thermal vias; full 2A is maintained up to +125°C junction temperature with proper DAP grounding.
Is LM2832YSDX/NOPB RoHS-compliant and lead-free?
Yes, LM2832YSDX/NOPB is RoHS-compliant and lead-free per TI's official product change notification (PCN) and packaging data. The "NOPB" suffix explicitly denotes lead-free (NiPdAu terminal finish), and the device meets JEDEC J-STD-020 moisture sensitivity level 2a (260°C reflow peak).
LM2832YSDX/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:
- 2A
- Frequency - Switching:
- 550kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (3x3)
LM2832YSDX/NOPB FAQ
1.How can I place an order for LM2832YSDX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2832YSDX/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 LM2832YSDX/NOPB reliable?
The price and inventory of LM2832YSDX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2832YSDX/NOPB is usually 5 days.
3.What payment methods are accepted for LM2832YSDX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2832YSDX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2832YSDX/NOPB?
LM2832YSDX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2832YSDX/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 LM2832YSDX/NOPB?
For technical support, including LM2832YSDX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2832YSDX/NOPB requirements.
6.How does Aetrix verify that LM2832YSDX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2832YSDX/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 LM2832YSDX/NOPB meets industry standards.
7.What is the process for return or replacement of LM2832YSDX/NOPB?
All LM2832YSDX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2832YSDX/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 LM2832YSDX/NOPB part is unused and in its original packaging.
Return procedure for LM2832YSDX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2832YSDX/NOPB 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…
