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Texas Instruments LM2832ZMYX/NOPB
- Part No.:
- LM2832ZMYX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LM2832ZMYX/NOPB.pdf
- Description:
- IC REG BUCK ADJ 2A 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,401
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Product details
Overview
LM2832ZMYX/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 with 3.0MHz switching frequency, 0.6V internal reference, and 150mΩ PMOS switch - used for compact local 5V-to-3.3V conversion in USB-powered devices and set-top boxes.
For engineers reviewing the LM2832ZMYX/NOPB datasheet, LM2832ZMYX/NOPB pinout, LM2832ZMYX/NOPB application, or LM2832ZMYX/NOPB equivalent, key selection criteria include verified 3.0MHz operation, thermal shutdown at 165°C, 30nA shutdown current, ±2% feedback voltage accuracy, and compatibility with ceramic output capacitors for low-ESR transient response.
Technical Context
The LM2832ZMYX/NOPB implements current-mode PWM control with internal compensation, enabling stable regulation across 3.0V–5.5V input and 0.6V–4.5V output ranges without external loop components. Its 30ns minimum on-time supports high-frequency operation down to 0.6V output while maintaining fast transient response.
It integrates pulse-by-pulse current limiting (typ. 3.25A), overvoltage protection (15% above VREF), undervoltage lockout (2.73V rising, 2.3V falling), and internal soft-start (600µs ramp). The eMSOP-PowerPAD package uses a dedicated DAP for thermal conduction to PCB ground, separate from signal/power GND pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 3.0MHz - enables use of sub-2.2µH inductors and 10–22µF ceramic output capacitors, minimizing board area. |
| Output Current | 2.0A continuous - supported by 150mΩ internal PMOS switch and cycle-by-cycle current limit (min 2.4A). |
| Feedback Voltage | 0.600V ±2% - sets output via resistor divider; enables precise 3.3V @ 2.0A regulation with <±1% load/line error. |
| Input Voltage Range | 3.0V to 5.5V - matches USB 5V and single-cell Li-ion systems; includes 430mV UVLO hysteresis. |
| Quiescent Current | 4.3–6.5mA (active), 30nA (shutdown) - ensures >90% efficiency at light loads and ultra-low standby power. |
| Thermal Shutdown | 165°C activation, ~150°C recovery - protects against sustained overload or poor heatsinking in enclosed designs. |
| Junction Temp Range | −40°C to +125°C - qualified for industrial temperature operation without derating. |
Pinout & Package
LM2832ZMYX/NOPB uses the 8-pin eMSOP-PowerPAD package (4.9mm × 6.0mm × 1.0mm), featuring exposed die attach pad (DAP) soldered to PCB ground for low thermal resistance (θJA = 80°C/W, θJC = 18°C/W). Pin 1 is VIND; pins 3, 5, 7 are GND; DAP is thermally connected but not electrically used as primary GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIND | Power input supply | Main power rail connection; must be decoupled with ≥22µF ceramic capacitor near pin. |
| VINA | Control circuitry supply | Bias supply for internal logic; connect directly to VIND on PCB - no separate filtering required. |
| EN | Enable control input | Logic-high active; threshold 1.8V; floating or >VINA+0.3V causes undefined behavior. |
| GND (pins 3,5,7) | Signal & power ground | Return path for FB divider bottom resistor; place R2 GND node within 1mm of pin 3. |
| FB | Feedback input | High-impedance (≤100nA bias) node; route short and away from SW/VIN traces to avoid noise coupling. |
| SW | Switch node output | Connects to inductor and Schottky catch diode anode; high dv/dt node requiring tight layout and ground stitching. |
| DAP | Die attach pad | Thermal interface only - must be soldered to solid copper pour tied to system GND for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| 3.0MHz fixed-frequency PWM | Enables <1.0mm height solutions using 1.0µH inductors and avoids AM radio band interference. |
| Internal 0.6V reference | Provides ±2% output accuracy over temp and line; eliminates need for external reference or trimming. |
| 150mΩ PMOS switch | Delivers 2.0A at <93% peak efficiency (5V→3.3V); reduces conduction loss vs. external MOSFET solutions. |
| Internal soft-start (600µs) | Prevents inrush current into bulk output capacitance; eliminates need for external SS capacitor or sequencing. |
| 30nA shutdown current | Supports battery-backed or always-on systems where <1µW standby power is critical. |
Applications
| USB Host Port Power | Set-Top Box Core Rail |
|---|---|
Use Scenario: Providing regulated 3.3V/2.0A to USB 3.0 controller, PHY, and hub ICs from a 5V bus. IC Role / Device Role / Timing Role: Primary buck converter supplying core logic voltage with fast load-step response to handle USB enumeration bursts. Use Value: 3.0MHz switching minimizes inductor size to fit within tight USB connector spacing; 30nA shutdown preserves host battery during suspend. | Use Scenario: Generating 3.3V for SoC I/O, memory interface, and HDMI transmitter in consumer STB designs. IC Role / Device Role / Timing Role: Local point-of-load regulator with integrated current limit and OVP protecting downstream ASICs from overvoltage faults. Use Value: Internal compensation and 2.0A capability eliminate external compensation network; 150mΩ RDS(ON) maintains >88% efficiency at full load per TI application data. |
| HDD Preamp Supply | DSL Modem Line Card |
Use Scenario: Delivering clean 3.3V to hard disk drive preamplifier circuits requiring low noise and fast transient recovery. IC Role / Device Role / Timing Role: Low-noise buck regulator with ceramic-capable output stage; SW node layout optimized to minimize EMI coupling into analog front-end. Use Value: 0.6V reference and current-mode control achieve <1% output deviation under 1A step load; thermal shutdown prevents damage during HDD spin-up surges. | Use Scenario: Powering ADSL2+ line driver and codec ICs in residential DSL modems operating from 5V wall adapter. IC Role / Device Role / Timing Role: High-density DC-DC solution meeting space-constrained modem PCB requirements while supporting burst-mode line activity. Use Value: eMSOP-PowerPAD package provides 3× better thermal performance than SOIC-8; 3.0MHz operation allows use of shielded 1.5µH inductors to meet CISPR-22 Class B emissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2832YMYX/NOPB | 0.55MHz switching frequency, lower quiescent current (2.8–4.5mA), same 2.0A rating and package. | Better light-load efficiency; requires larger inductor (≥4.7µH) and capacitor (≥47µF) due to lower frequency. | Select when board space is less constrained and priority is >92% efficiency below 100mA load. |
| TPS62231DRVR | 3.0MHz, 2.0A, 0.6V ref, but uses SOT-23-6 package; lacks OVP and has 1.2V min VOUT. | No internal overvoltage protection; requires external resistor divider for 3.3V; higher RDS(ON) (200mΩ) limits full-load efficiency. | Select when footprint is critical and OVP is handled upstream; verify thermal margin at 2.0A with SOT-23-6 θJA = 160°C/W. |
Compared with LM2832YMYX/NOPB, the LM2832ZMYX/NOPB trades higher active IQ for smaller magnetics and tighter EMI control; versus TPS62231DRVR, it offers superior protection features and lower conduction loss but occupies more PCB area.
Availability
LM2832ZMYX/NOPB is available at Aetrix Electronics and suitable for USB-powered devices, set-top boxes, DSL modems, and HDD preamp supplies requiring stable component supply, industrial temperature support, and long-term production continuity.
Supply support for LM2832ZMYX/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 company specializing in analog, embedded processing, and power management ICs, with leadership in high-efficiency DC-DC conversion and industrial-grade reliability.
The LM2832 product line delivers compact, high-frequency step-down regulators for space-constrained applications where fast transient response, integrated protection, and minimal external components are essential - targeting consumer, computing, and communications infrastructure markets.
FAQ
What is the maximum output current capability of the LM2832ZMYX/NOPB?
The LM2832ZMYX/NOPB delivers up to 2.0A continuous output current under typical conditions (VIN = 5V, VOUT = 3.3V, TA = 25°C). Its internal 150mΩ PMOS switch and cycle-by-cycle current limit (min 2.4A) ensure reliable operation at full load. Derating is required above 85°C ambient or with inadequate PCB copper area for thermal dissipation.
Does the LM2832ZMYX/NOPB require external compensation components?
No, the LM2832ZMYX/NOPB uses internally compensated current-mode control and requires no external compensation network. This simplifies design and reduces bill-of-materials count. Only the feedback resistor divider (R1/R2), input/output capacitors, inductor, and catch diode are needed for basic operation.
What package type is used by the LM2832ZMYX/NOPB?
The LM2832ZMYX/NOPB uses the 8-pin eMSOP-PowerPAD package (4.9mm × 6.0mm × 1.0mm) with exposed die attach pad (DAP). This thermally enhanced package requires soldering the DAP to a PCB ground plane using ≥4 thermal vias for optimal θJA = 80°C/W performance.
Can the LM2832ZMYX/NOPB operate with a 3.3V input supply?
Yes, the LM2832ZMYX/NOPB supports input voltages from 3.0V to 5.5V. At VIN = 3.3V, it can regulate outputs down to 0.6V. However, for a 3.3V output, the minimum practical input is ~3.6V due to duty cycle and dropout constraints - confirmed by TI's typical application curves showing stable regulation at VIN ≥ 3.6V for VOUT = 3.3V.
How does the LM2832ZMYX/NOPB protect against overvoltage conditions?
The LM2832ZMYX/NOPB includes internal output overvoltage protection (OVP) that disables the PMOS switch when the FB pin voltage exceeds 15% above the 0.6V internal reference (i.e., >0.69V). This corresponds to ~3.8V output for a 3.3V design and prevents damage to downstream 3.3V-rated ICs during feedback divider failure or transient events.
LM2832ZMYX/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:
- 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:
- 3MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
LM2832ZMYX/NOPB FAQ
1.How can I place an order for LM2832ZMYX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2832ZMYX/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 LM2832ZMYX/NOPB reliable?
The price and inventory of LM2832ZMYX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2832ZMYX/NOPB is usually 5 days.
3.What payment methods are accepted for LM2832ZMYX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2832ZMYX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2832ZMYX/NOPB?
LM2832ZMYX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2832ZMYX/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 LM2832ZMYX/NOPB?
For technical support, including LM2832ZMYX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2832ZMYX/NOPB requirements.
6.How does Aetrix verify that LM2832ZMYX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2832ZMYX/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 LM2832ZMYX/NOPB meets industry standards.
7.What is the process for return or replacement of LM2832ZMYX/NOPB?
All LM2832ZMYX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2832ZMYX/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 LM2832ZMYX/NOPB part is unused and in its original packaging.
Return procedure for LM2832ZMYX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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