My Inquiry
My Account
Texas Instruments LM2833ZMY/NOPB
- Part No.:
- LM2833ZMY/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
LM2833ZMY/NOPB.pdf
- Description:
- IC REG BUCK ADJ 3A 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:770
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM2833ZMY/NOPB from Texas Instruments is a monolithic 3.0 MHz, 3.0A synchronous step-down DC-DC switching regulator in a 10-pin MSOP-PowerPAD package. It integrates a 56 mΩ PMOS high-side switch, operates from 3.0V to 5.5V input, delivers 0.6V–4.5V adjustable output, and achieves up to 93% efficiency in compact USB-powered or HDD core power applications.
For engineers reviewing the LM2833ZMY/NOPB datasheet, LM2833ZMY/NOPB pinout, LM2833ZMY/NOPB application, or LM2833ZMY/NOPB equivalent, key selection criteria include its fixed 3.0 MHz switching frequency, internal soft-start (600 µs), peak current-mode control with no external compensation, 0.6 V ±2% reference, and thermal shutdown at 165°C.
Technical Context
The LM2833ZMY/NOPB implements fixed-frequency peak current-mode PWM control with an internally generated ramp slope proportional to switching frequency. Its 3.0 MHz oscillator enables sub-1 µH inductor use and supports minimum on-times down to 30 ns for low-duty-cycle operation at 0.6 V output.
It features cycle-by-cycle current limiting (4.4 A typical), frequency foldback (reducing to 800 kHz when FB < 0.32 V), output over-voltage protection (trip at ~0.69 V), and under-voltage lockout with 350 mV hysteresis (2.7 V enable / 2.35 V disable).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | Fixed 3.0 MHz - enables ultra-small inductors (e.g., 0.47 µH) and ceramic capacitors without compromising transient response. |
| Output Current | 3.0 A steady-state - supports high-current loads such as HDD spindle motors or FPGA core rails without external MOSFETs. |
| Input Voltage Range | 3.0 V to 5.5 V - compatible with single-cell Li-ion, USB 5 V, and 3.3 V/5 V system rails. |
| Feedback Reference | 0.600 V ±2% over line/load/temp - sets precise output voltage via resistor divider; enables 0.6 V minimum output. |
| PMOS RDS(ON) | 56 mΩ (MSOP-PowerPAD) - reduces conduction loss at full load; contributes to >90% efficiency at 2 A, 3.3 V out. |
| Quiescent Current | 4.3–6.5 mA (active), 300 nA (shutdown) - enables battery-backed standby modes with negligible drain. |
| Thermal Shutdown | 165°C trip, 15°C hysteresis - protects against sustained overload or poor PCB thermal design; recovers autonomously at ~150°C. |
Pinout & Package
LM2833ZMY/NOPB uses the 10-pin MSOP-PowerPAD (DGQ) package with exposed die attach pad (DAP) for enhanced thermal dissipation. The DAP must be soldered to a thermal pad on the PCB but cannot serve as primary ground return.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VINC | Bias supply input | Provides internal circuitry bias; requires local 0.1 µF bypass to PGND to stabilize control loop. |
| 2 EN | Enable control | Logic-high (>1.8 V) enables regulation; logic-low (<0.4 V) enters 300 nA shutdown; no internal pull-up. |
| 3 SGND | Analog ground | Reference point for feedback network; place bottom feedback resistor directly adjacent to minimize noise coupling. |
| 4 NC | No-connect | Internally unused; must be connected to PGND per TI layout guidelines to reduce EMI. |
| 5 FB | Feedback input | Senses output voltage via resistor divider; error amplifier compares to 0.6 V reference to adjust duty cycle. |
| 6 PGND | Power ground | High-current return path for internal switch and catch diode; separate from SGND to avoid ground bounce. |
| 7,8 SW | Switch node | Connects to inductor and catch diode anode; carries high di/dt; requires short, wide copper pour to minimize ringing. |
| 9,10 VIND | Main input supply | High-current VIN input; requires parallel 22 µF MLCC + 1 µF ceramic close to pins for low-ESL filtering. |
Key Features
| Feature | Design Value |
|---|---|
| Internal compensation | Eliminates need for external compensation network - simplifies layout and reduces BOM count by ≥3 components. |
| Frequency foldback | Reduces switching frequency to 800 kHz during startup or overload - limits peak switch current and prevents thermal runaway. |
| Internal soft-start | 600 µs controlled output ramp - suppresses inrush current and minimizes output overshoot without external timing capacitor. |
| Output over-voltage protection | Triggers at FB = 0.69 V (15% above 0.6 V ref) - disables switch to protect downstream 1.8 V/2.5 V/3.3 V ICs from fault conditions. |
| Peak current-mode control | Enables fast transient response and inherent cycle-by-cycle current limiting - avoids need for external current-sense resistor. |
Applications
| USB Powered Devices | HDD Core Power |
|---|---|
|
Use Scenario: Portable USB-powered SSD enclosures requiring regulated 3.3 V or 2.5 V rail from 5 V bus. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 3.0 A output with minimal board area. Use Value: 3.0 MHz switching allows ≤0.47 µH inductor and 22 µF ceramic output cap - fits within tight USB form factor. |
Use Scenario: 2.5-inch HDD spindle motor and preamp IC power in NAS or DVR systems. IC Role / Device Role / Timing Role: High-current buck converter supplying 1.2 V or 1.8 V core voltage with fast load-step response. Use Value: 56 mΩ RDS(ON) and peak current-mode control maintain <±1% regulation during 0→3 A load transients. |
| Multimedia Set Top Box | Data Acquisition/Telemetry |
|
Use Scenario: Powering SoC cores and DDR memory interfaces in cable/satellite STBs with strict EMI limits. IC Role / Device Role / Timing Role: Main DC-DC converter operating at 3.0 MHz to shift noise spectrum above sensitive RF bands. Use Value: Fixed frequency eliminates variable switching artifacts; integrated soft-start prevents audio pop during boot. |
Use Scenario: Remote sensor nodes powered by USB or PoE, requiring low-noise, reliable 3.3 V supply for ADCs and microcontrollers. IC Role / Device Role / Timing Role: Efficient, thermally robust regulator supporting continuous 2 A operation in sealed enclosures. Use Value: Thermal shutdown + hysteresis (165°C/150°C) ensures fail-safe operation without external thermal monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2833XMY/NOPB | 1.5 MHz switching frequency; 58 mΩ RDS(ON); higher max duty cycle (95%) | Better suited for lower input-to-output ratios (e.g., 5 V → 3.3 V); less stringent EMI filtering needed | Select when board space allows larger inductors or when lower EMI priority outweighs size reduction. |
| TPS62231DRVR | 3.0 MHz, 600 mA output; 2.05 V–6.0 V input; 0.6 V reference; WSON-6 package | Limited to ≤600 mA loads; lacks frequency foldback and OVP; smaller footprint but lower current capability | Use only for low-power subsystems (e.g., MCU I/O rails); not a functional replacement for 3.0 A requirements. |
Compared with LM2833ZMY/NOPB, the LM2833XMY/NOPB trades switching speed for marginally better light-load efficiency and wider duty-cycle range, while the TPS62231DRVR offers identical frequency and reference but cannot support the 3.0 A load current critical to HDD or USB device use cases.
Availability
LM2833ZMY/NOPB is available at Aetrix Electronics and suitable for USB-powered devices, HDD core power, multimedia set-top boxes, and data acquisition systems requiring stable component supply across production lifecycles.
Supply support for LM2833ZMY/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-efficiency DC-DC conversion.
The LM2833 product line delivers compact, high-frequency buck regulators optimized for space-constrained, high-current applications in consumer, computing, and industrial electronics - specifically targeting designs where PCB area and thermal performance are critical.
FAQ
What is the switching frequency of LM2833ZMY/NOPB?
The LM2833ZMY/NOPB has a fixed internal switching frequency of 3.0 MHz, with typical variation of ±25% over temperature and input voltage. This high frequency enables use of sub-microhenry inductors and small ceramic capacitors, reducing solution size significantly compared to lower-frequency alternatives.
Does LM2833ZMY/NOPB require external compensation components?
No, the LM2833ZMY/NOPB uses internally compensated peak current-mode control. No external compensation network (e.g., Type II/III compensator) is required - only the feedback resistor divider, input/output capacitors, inductor, and catch diode are needed for full operation.
What is the maximum output current supported by LM2833ZMY/NOPB?
The LM2833ZMY/NOPB delivers up to 3.0 A DC output current under typical thermal conditions (TA = 25°C, 4-layer JEDEC board). Actual achievable current depends on PCB layout, ambient temperature, and airflow; thermal shutdown activates at 165°C junction temperature to prevent damage.
How does the enable (EN) pin function on LM2833ZMY/NOPB?
The EN pin on LM2833ZMY/NOPB controls device operation: voltage >1.8 V enables regulation with 15 µs delay followed by 600 µs soft-start; voltage <0.4 V places the device in 300 nA shutdown mode. The pin has no internal pull-up and must not float or exceed VIN + 0.3 V.
What package type is used for LM2833ZMY/NOPB?
The LM2833ZMY/NOPB is packaged in a 10-pin MSOP-PowerPAD (DGQ) with exposed thermal pad. This package provides low thermal resistance (θJA = 50°C/W, θJC = 11°C/W) and requires soldering the DAP to a PCB thermal plane for optimal power handling and reliability.
LM2833ZMY/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-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:
- 3A
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP-PowerPad
LM2833ZMY/NOPB FAQ
1.How can I place an order for LM2833ZMY/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2833ZMY/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 LM2833ZMY/NOPB reliable?
The price and inventory of LM2833ZMY/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2833ZMY/NOPB is usually 5 days.
3.What payment methods are accepted for LM2833ZMY/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2833ZMY/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2833ZMY/NOPB?
LM2833ZMY/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2833ZMY/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 LM2833ZMY/NOPB?
For technical support, including LM2833ZMY/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2833ZMY/NOPB requirements.
6.How does Aetrix verify that LM2833ZMY/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2833ZMY/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 LM2833ZMY/NOPB meets industry standards.
7.What is the process for return or replacement of LM2833ZMY/NOPB?
All LM2833ZMY/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2833ZMY/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 LM2833ZMY/NOPB part is unused and in its original packaging.
Return procedure for LM2833ZMY/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2833ZMY/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…
