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Texas Instruments LM2750SD-5.0/NOPB
- Part No.:
- LM2750SD-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM2750SD-5.0/NOPB.pdf
- Description:
- IC REG CHARGE PUMP 5V 1 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,271
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Product details
Overview
LM2750SD-5.0/NOPB from Texas Instruments is a fixed 5-V, low-noise switched-capacitor boost regulator delivering up to 120 mA output current at 2.9–5.6 V input, ±4% output voltage accuracy, 1.7 MHz fixed switching frequency, and <2 µA shutdown current - used in space-constrained Li-ion-powered LED lighting and audio amplifier supplies.
For engineers reviewing the LM2750SD-5.0/NOPB datasheet, LM2750SD-5.0/NOPB pinout, LM2750SD-5.0/NOPB application, or LM2750SD-5.0/NOPB equivalent, key selection criteria include input voltage range (2.7–5.6 V), pre-regulated low-noise architecture, WSON-10 thermal performance, and three-ceramic-capacitor implementation requiring no inductor.
Technical Context
The LM2750SD-5.0/NOPB implements a two-phase non-overlapping switched-capacitor doubler with internal pre-regulation: during φ₁, CFLY charges to VIN via low-RON input switches; during φ₂, CFLY stacks atop VIN to generate boosted VOUT while regulation is applied *before* doubling to minimize input current ripple. This architecture achieves <4 mVp-p output ripple with 2.2 µF COUT and maintains near-zero noise on the battery line (VIN).
It integrates soft-start (500 µs typical ramp), thermal shutdown (150°C trip), 300 mA current limiting, and an active-low shutdown pin with internal 200 kΩ pulldown. The fixed 5-V output eliminates external feedback components - unlike the LM2750-ADJ variant - simplifying design for stable, low-EMI 5-V generation in portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5 V ± 4% - tightly regulated for powering sensitive analog circuits and white LED strings without additional LDO post-regulation. |
| Input Voltage Range | 2.7 V to 5.6 V - supports full discharge curve of single-cell Li-ion (2.7–4.2 V) plus USB 5-V and legacy 3.3-V rails. |
| Max Output Current | 120 mA @ VIN ≥ 2.9 V - sufficient for driving 4–6 parallel white LEDs or low-power audio amplifiers. |
| Switching Frequency | 1.7 MHz fixed - enables use of small 1 µF flying capacitor and 2.2 µF input/output MLCCs; avoids audible noise and simplifies EMI filtering. |
| Shutdown Current | <2 µA - preserves battery life in standby mode for handheld scanners and EPOS terminals. |
| Peak Efficiency | 85% @ VIN = 2.9 V, IOUT = 120 mA - minimizes thermal load in thermally constrained WSON-10 package. |
| Output Ripple | 4 mVp-p @ COUT = 10 µF, IOUT = 100 mA - meets low-noise requirements for audio supply rails and precision analog front-ends. |
Pinout & Package
LM2750SD-5.0/NOPB uses a 3.0 mm × 3.0 mm, 10-pin WSON (NGY/DSC) package with exposed die-attach pad (DAP) for enhanced thermal dissipation. The DAP must be soldered to a PCB copper plane for optimal junction-to-board thermal resistance (21.5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pins 1, 2) | Regulated output voltage node | Two parallel pins reduce trace impedance and improve current sharing for 120 mA loads; requires local 2.2 µF ceramic capacitor. |
| VIN (Pins 8, 9) | Main input power connection | Dual pins minimize input path resistance and inductance; must connect directly to 2.2 µF input capacitor with shortest possible traces. |
| GND (Pins 3, 5, 6) | Ground reference and return path | Pin 3 is GND only for LM2750SD-5.0/NOPB (not FB); Pins 5/6 + DAP form low-impedance ground net essential for noise control and thermal conduction. |
| CAP+ (Pin 10) | Flying capacitor positive terminal | Connects to + terminal of 1 µF flying capacitor; layout must minimize loop area to reduce EMI from charge transfer switching. |
| CAP− (Pin 7) | Flying capacitor negative terminal | Connects to − terminal of 1 µF flying capacitor; forms critical high-frequency switching loop with CAP+ and internal switches. |
| SD (Pin 4) | Active-low shutdown control | Pulled low internally by 200 kΩ resistor; driven high (>1.3 V) to enable operation; supports PWM dimming when toggled at >100 Hz. |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless architecture | Eliminates magnetic components and associated EMI, enabling ultra-thin PCB designs for smartphones and wearables. |
| Pre-regulation topology | Reduces input current ripple to negligible levels, preserving battery line integrity and avoiding interference with RF sections. |
| Tightly controlled soft-start | 500 µs typical VOUT ramp prevents inrush current spikes that could brown-out shared input rails in multi-rail systems. |
| Thermal shutdown & current limit | 150°C junction trip and 300 mA short-circuit protection prevent damage during overloads or PCB thermal bottlenecks. |
| WSON-10 thermal performance | 45.6°C/W RθJA (DSC) enables full 120 mA output without derating when DAP is properly connected to ≥1 in² copper pour. |
Applications
| White LED Display Backlighting | Cellular Phone SIM Card Power |
|---|---|
|
Use Scenario: Driving 4–6 parallel white LEDs in compact handheld displays with single Li-ion cell input. IC Role / Device Role / Timing Role: Fixed 5-V switched-capacitor boost regulator providing stable, low-noise bias for LED current sources. Use Value: Delivers 120 mA at 5 V ±4% with <4 mVp-p ripple - eliminating need for post-LDO filtering and reducing BOM count by one component. |
Use Scenario: Supplying clean 5-V power to SIM card interface circuitry in mobile handsets operating across full Li-ion voltage range. IC Role / Device Role / Timing Role: Low-quiescent, pre-regulated boost converter ensuring stable VCC for ISO/IEC 7816-compliant smart card communication. Use Value: Maintains regulation down to 2.7 V input while drawing <2 µA in shutdown - extending standby time without compromising interface reliability. |
| Portable Audio Amplifier Supply | EPOS Barcode Scanner Core Power |
|
Use Scenario: Generating low-noise 5-V rail for Class AB headphone amplifiers in Bluetooth earbuds and portable speakers. IC Role / Device Role / Timing Role: Fixed-output switched-capacitor regulator delivering ripple-free power to analog signal chain stages. Use Value: 1.7 MHz switching frequency places noise spectrum beyond audio band; 4 mVp-p ripple avoids audible artifacts in amplified output. |
Use Scenario: Powering laser diode driver and microcontroller in battery-operated retail barcode scanners. IC Role / Device Role / Timing Role: Compact, efficient boost converter enabling continuous scanning operation from 2.7–4.2 V Li-ion source. Use Value: 85% peak efficiency and WSON-10 thermal design sustain 120 mA output without thermal throttling during extended scan bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar switched-capacitor boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60130DBVR | Fixed 5-V output, 100 mA max, 1.1 MHz switching, SOIC-8 package | Limited output current and larger footprint; lacks pre-regulation → higher input ripple | Choose for cost-sensitive, lower-current designs where board space allows SOIC and input noise is less critical. |
| MAX680ESA+ | Fixed 5-V output, 100 mA max, 10 kHz switching, SOIC-8, no shutdown | Low-frequency operation causes audible noise; no SD pin or thermal protection; higher output ripple | Choose only for legacy designs requiring pin compatibility with MAX680; not recommended for new portable designs. |
Compared with TPS60130DBVR and MAX680ESA+, the LM2750SD-5.0/NOPB delivers 20% higher output current in half the footprint, achieves 10× lower output ripple via 1.7 MHz pre-regulation, and includes integrated shutdown and thermal protection - making it superior for noise-sensitive, space-constrained Li-ion applications.
Availability
LM2750SD-5.0/NOPB is available at Aetrix Electronics and suitable for white LED backlighting, SIM card power, portable audio amplifier supplies, and EPOS barcode scanner designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LM2750SD-5.0/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 ICs, with decades of expertise in high-efficiency DC/DC conversion and low-noise power solutions.
The LM2750 product line was designed specifically for ultra-compact, battery-powered systems needing clean, inductorless 5-V generation - targeting portable consumer electronics, handheld industrial tools, and secure interface peripherals where size, noise, and efficiency are critical.
FAQ
What is the minimum input voltage required for full 120 mA output from the LM2750SD-5.0/NOPB?
The LM2750SD-5.0/NOPB delivers up to 120 mA output current only when the input voltage is 2.9 V or higher. Below 2.9 V - down to the absolute minimum of 2.7 V - maximum output current drops to 40 mA. This behavior is specified in the Recommended Operating Conditions table and verified across temperature and process corners.
Can the LM2750SD-5.0/NOPB be used with ceramic capacitors smaller than those specified in the datasheet?
Yes, but with strict limits: the LM2750SD-5.0/NOPB requires minimum 1 µF CIN and 1 µF COUT for ≤60 mA loads, and 2 µF for ≤120 mA loads. Reducing CFLY below 1 µF increases output resistance and voltage droop - TI's characterization shows >10% VOUT drop at 120 mA with 0.47 µF CFLY. Always verify stability and ripple in final layout.
Does the LM2750SD-5.0/NOPB require external feedback resistors to set its output voltage?
No. The LM2750SD-5.0/NOPB is the fixed 5-V version and contains internal feedback circuitry - no external resistors are needed. In contrast, the LM2750-ADJ variant requires an external R1/R2 divider on its FB pin (Pin 3) to program output voltage between 3.8 V and 5.2 V. Pin 3 on LM2750SD-5.0/NOPB is GND, not FB.
How does the LM2750SD-5.0/NOPB achieve low input current ripple compared to standard charge pumps?
The LM2750SD-5.0/NOPB uses pre-regulation: it modulates the on-resistance of input-connected switches *before* the voltage-doubling phase, controlling energy transfer to the flying capacitor. This eliminates the large pulsed input currents typical of open-loop charge pumps, resulting in near-DC input current and minimal noise on the VIN rail - confirmed by TI's input current ripple measurements.
Is thermal derating required for the LM2750SD-5.0/NOPB when operating at 120 mA in a standard 4-layer PCB?
No derating is typically required if the DAP (exposed pad) is soldered to ≥1 in² of inner-layer copper pour with ≥6 thermal vias. With this layout, the LM2750SD-5.0/NOPB maintains TJ < 125°C at 120 mA and 4.2 V input in 25°C ambient - per TI's thermal characterization data for the DSC WSON package (RθJB = 21.5°C/W). Without proper DAP connection, thermal shutdown may occur.
LM2750SD-5.0/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.6V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 120mA
- Frequency - Switching:
- 1.7MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-WSON (3x3)
LM2750SD-5.0/NOPB FAQ
1.How can I place an order for LM2750SD-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2750SD-5.0/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 LM2750SD-5.0/NOPB reliable?
The price and inventory of LM2750SD-5.0/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2750SD-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM2750SD-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2750SD-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2750SD-5.0/NOPB?
LM2750SD-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2750SD-5.0/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 LM2750SD-5.0/NOPB?
For technical support, including LM2750SD-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2750SD-5.0/NOPB requirements.
6.How does Aetrix verify that LM2750SD-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2750SD-5.0/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 LM2750SD-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM2750SD-5.0/NOPB?
All LM2750SD-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2750SD-5.0/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 LM2750SD-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM2750SD-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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