My Inquiry
My Account
Texas Instruments LM2832YSD
- Part No.:
- LM2832YSD
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
LM2832YSD.pdf
- Description:
- IC REG BUCK ADJ 2A 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,330
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2832YSD 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 internal soft-start for controlled startup in space-constrained power rails.
For engineers reviewing the LM2832YSD datasheet, LM2832YSD pinout, LM2832YSD application, or LM2832YSD equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and electrical specifications, and real-world design implications for local core voltage regulation in embedded and USB-powered systems.
Technical Context
The LM2832YSD employs current-mode PWM control with internal compensation and a fixed 550 kHz oscillator, enabling stable regulation without external loop components. Its architecture includes pulse-by-pulse current limiting (3.25A typ), thermal shutdown at 165°C, and overvoltage protection triggered at 15% above VREF.
It operates across 3.0V–5.5V input and supports output voltages from 0.6V to 4.5V via resistive feedback. The 8-pin eMSOP-PowerPAD package uses dedicated VINA/VIND separation for noise isolation, with GND pins (3,5,7) and DAP thermally connected to PCB ground for low θJA (80°C/W).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0V to 5.5V - supports direct connection to USB 5V or single-cell Li-ion systems without pre-regulation. |
| Output Current | 2.0A continuous - sufficient for powering FPGA I/O banks, ARM Cortex-A cores, or high-speed USB PHYs. |
| Switching Frequency | 550 kHz - enables use of compact 1.0–2.2 µH shielded inductors and ceramic capacitors under 10 mm² footprint. |
| Feedback Reference | 0.600 V ±2% - sets output accuracy; allows 3.3V output with R1/R2 = 4.5kΩ/10kΩ divider yielding ±33 mV tolerance. |
| PMOS RDS(ON) | 155 mΩ - contributes ≤170 mW conduction loss at 2A, supporting >88% efficiency at 5V→3.3V/2A per TI test data. |
| Quiescent Current | 2.8–4.5 mA (switching), 30 nA (shutdown) - enables ultra-low standby power in battery-backed applications. |
| Thermal Shutdown | 165°C with 15°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-up. |
Pinout & Package
LM2832YSD is packaged in an 8-pin eMSOP-PowerPAD (exposed thermal pad) with 0.65 mm pitch, optimized for thermal dissipation and EMI control in high-density layouts. The DAP must be soldered to a solid ground plane using ≥4 thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIND) | Power Input Supply | Primary VIN path for switch and gate drive; requires local 22 µF ceramic capacitor within 3 mm. |
| 2 (VINA) | Control Circuitry Supply | Bias rail for error amp and logic; must be tied directly to VIND on PCB to avoid noise coupling. |
| 3,5,7 (GND) | Signal & Power Ground | Shared return for FB divider bottom resistor, SW node catch diode cathode, and DAP thermal path. |
| 4 (EN) | Enable Control Input | Active-high logic interface; 1.8V threshold ensures compatibility with 1.8V/3.3V microcontrollers; floating = disabled. |
| 6 (FB) | Feedback Input | High-impedance (≤100 nA bias) node; trace must be short, shielded from SW and inductor fields to prevent regulation drift. |
| 8 (SW) | Switch Node Output | Drives external inductor; connects to Schottky catch diode anode; high dv/dt node requiring tight layout and ground guard ring. |
| DAP | Die Attach Pad | Thermal interface only - not a functional GND; must be soldered to inner-layer ground plane for θJA reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Soft-Start | Ramps VREF from 0V to 0.6V over ~600 µs, limiting inrush current to <2.5× IOUT during startup. |
| Current-Mode Control | Enables fast transient response (<10 µs recovery for 1A load step) and inherent cycle-by-cycle current limiting. |
| Overvoltage Protection | Shuts off SW when FB exceeds 0.69V (15% above 0.6V), preventing damage to downstream 3.3V logic during feedback fault. |
| Undervoltage Lockout | Enables operation only above 2.73V (typ), with 430 mV hysteresis to prevent oscillation during brown-out conditions. |
| Thermal Shutdown Recovery | Hysteresis of ~15°C ensures stable re-start after cooling to ~150°C, avoiding repeated cycling under thermal stress. |
Applications
| Local Core Voltage Regulation | USB-Powered Peripheral Supply |
|---|---|
Use Scenario: Regulating 5V USB bus to 3.3V for ARM-based microcontroller core and I/O domains in portable instrumentation. IC Role / Device Role / Timing Role: Primary buck converter providing tightly regulated, low-noise 3.3V rail with fast load transient response to handle CPU burst activity. Use Value: Eliminates need for external compensation network; achieves 88% efficiency at 2A while maintaining <±1% output deviation over line/load/temperature. | Use Scenario: Powering HDMI receiver ICs and USB 2.0 transceivers in set-top box front-end modules powered solely from USB-C PD source. IC Role / Device Role / Timing Role: Standalone step-down regulator delivering clean 3.3V at up to 2.0A with integrated OVP and UVLO for unattended plug-in operation. Use Value: Enables robust hot-plug behavior: 30 nA shutdown current preserves host battery life; 550 kHz switching avoids audible noise and simplifies EMI filtering. |
| HDD Spindle Motor Controller Bias | DSL Modem Line Card LDO Replacement |
Use Scenario: Generating 3.3V bias for HDD spindle motor driver ICs in consumer NAS enclosures where board area is constrained. IC Role / Device Role / Timing Role: High-current DC-DC stage replacing inefficient linear regulators to reduce thermal load on densely packed PCBs. Use Value: 155 mΩ RDS(ON) and 550 kHz operation allow use of 1.5 µH inductor and 22 µF X7R MLCCs, cutting solution size by 40% vs. legacy 300 kHz designs. | Use Scenario: Replacing discrete LDO + pass transistor solutions in DSL modem line cards requiring 3.3V @ 1.8A with improved thermal performance. IC Role / Device Role / Timing Role: Efficient point-of-load regulator handling dynamic line-card loads while meeting ETSI Class B conducted emissions limits. Use Value: Internal current-mode control and 0.6V reference enable ±1.5% output accuracy over -40°C to +125°C junction range without trimming. |
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 | 3 MHz switching frequency, 1.2A max output, 0.6V reference, WSON-6 package | Lower current rating; better suited for sub-1.2A logic rails with tighter board area constraints | Select when footprint minimization outweighs current requirement; verify thermal margin at full load. |
| MP2108DJ-LF-Z | 1.5 MHz switching frequency, 2A output, 0.8V reference, MSOP-8 package, no internal soft-start | Higher VREF reduces feedback divider sensitivity but requires external soft-start circuit for inrush control | Choose when cost sensitivity dominates; add RC soft-start network if system lacks controlled enable sequencing. |
Compared with TPS62231DRVR and MP2108DJ-LF-Z, the LM2832YSD offers higher output current headroom (2.0A vs. 1.2A/2.0A), lower reference voltage (0.6V vs. 0.6V/0.8V) for tighter output tolerance, and integrated soft-start - making it optimal for 3.3V core rails where precision, thermal robustness, and startup reliability are critical.
Availability
LM2832YSD is available at Aetrix Electronics and suitable for USB-powered peripherals, HDD controller boards, set-top box power supplies, and DSL modem line cards requiring stable component supply and long-term production continuity.
Supply support for LM2832YSD 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 LM2832YSD belongs to TI's high-frequency monolithic buck regulator product line, designed specifically for compact, high-current point-of-load applications in consumer, computing, and communications equipment where thermal density and PCB area are primary constraints.
FAQ
What is the maximum output current capability of the LM2832YSD?
The LM2832YSD delivers up to 2.0A continuous output current under typical conditions (VIN = 5V, VOUT = 3.3V, TA = 25°C, with proper PCB thermal design). Its cycle-by-cycle current limit is guaranteed at 2.4A minimum and typically 3.25A, allowing brief peak loads beyond 2.0A without shutdown - as confirmed in the SNVS455A datasheet Section 6.5.
Does the LM2832YSD require external compensation components?
No, the LM2832YSD uses internally compensated current-mode control, eliminating the need for external compensation networks. This simplifies design and improves stability across operating conditions - a key feature highlighted in the "Features" section of the SNVS455A datasheet and validated in the Typical Application Circuit (Figure 1).
What package type is used for the LM2832YSD, and how should the DAP be handled?
The LM2832YSD uses the 8-pin eMSOP-PowerPAD package. The Die Attach Pad (DAP) is a thermal interface only and must be soldered to a solid PCB ground plane using at least four thermal vias - it is not a functional ground pin. Improper DAP connection increases θJA from 80°C/W to >120°C/W, risking thermal shutdown under full load.
Can the LM2832YSD operate with a 3.3V input to generate 1.8V output?
Yes, the LM2832YSD 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 >85% efficiency (per Figure 4 in SNVS455A) and full 2.0A capability, provided the duty cycle remains within 90% maximum and thermal design accommodates reduced headroom.
How does the LM2832YSD handle overvoltage faults on the output?
The LM2832YSD includes dedicated output overvoltage protection (OVP) that disables the internal PMOS switch when the FB pin voltage exceeds 0.69V - corresponding to 15% above the 0.6V internal reference. This action pulls SW low, allowing the output to discharge through the catch diode until regulation resumes, protecting downstream 3.3V logic as specified in Section 8.3.7 of SNVS455A.
LM2832YSD 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)
LM2832YSD FAQ
1.How can I place an order for LM2832YSD through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2832YSD 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 LM2832YSD reliable?
The price and inventory of LM2832YSD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2832YSD is usually 5 days.
3.What payment methods are accepted for LM2832YSD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2832YSD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2832YSD?
LM2832YSD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2832YSD 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 LM2832YSD?
For technical support, including LM2832YSD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2832YSD requirements.
6.How does Aetrix verify that LM2832YSD is sourced from the original manufacturer or authorized distributors?
All LM2832YSD 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 LM2832YSD meets industry standards.
7.What is the process for return or replacement of LM2832YSD?
All LM2832YSD units undergo pre-shipment inspection (PSI). If there is an issue with LM2832YSD, 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 LM2832YSD part is unused and in its original packaging.
Return procedure for LM2832YSD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2832YSD 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…
