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Texas Instruments LM2750LDX-5.0/NOPB
- Part No.:
- LM2750LDX-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM2750LDX-5.0/NOPB.pdf
- Description:
- IC REG CHARGE PUMP 5V 1 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,191
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Product details
Overview
LM2750LDX-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 accuracy, 1.7 MHz fixed switching frequency, and <2 µA shutdown current. It serves as a compact, inductorless power supply for LED backlighting and portable audio amplifiers.
For engineers reviewing the LM2750LDX-5.0/NOPB datasheet, LM2750LDX-5.0/NOPB pinout, LM2750LDX-5.0/NOPB application, or LM2750LDX-5.0/NOPB equivalent, key selection criteria include input voltage range (2.7–5.6 V), output regulation tolerance (±4%), thermal performance in WSON package, and capacitor-based design requiring only CIN, COUT, and CFLY.
Technical Context
The LM2750LDX-5.0/NOPB implements pre-regulation via modulated on-resistance of input-connected pass-transistor switches before charge-pumping, minimizing VIN ripple and preserving battery line integrity. Its two-phase non-overlapping clock drives internal switches to charge CFLY during φ1 and stack it atop VIN during φ2, enabling regulated doubling.
Regulation is achieved without an inductor by dynamically adjusting switch resistance to maintain VOUT = 5 V ± 4% across load and input variations. Output current capability is limited by thermal dissipation and internal 5 Ω typical output resistance, with current limiting set at 300 mA and thermal shutdown engaging at TJ = 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VOUT | 5 V ± 4% - Ensures stable logic-level supply for LEDs or analog circuitry without external feedback network. |
| VIN Range | 2.7 V to 5.6 V - Supports full Li-ion discharge curve (2.7–4.2 V) plus USB 5 V and legacy 3.3/5 V rails. |
| IOUT Max | 120 mA @ VIN ≥ 2.9 V - Sufficient for driving 4–6 white LEDs in parallel or powering Class AB audio amplifiers. |
| fSW | 1.7 MHz fixed - Enables use of small 1 µF ceramic flying capacitor and reduces EMI filtering burden. |
| Shutdown IQ | < 2 µA - Preserves battery life in standby mode for handheld scanners and EPOS terminals. |
| Efficiency | 85% peak / 70% avg over 2.9–4.2 V - Minimizes heat generation in space-constrained WSON package. |
| Output Ripple | 4 mVP-P @ 10 µF COUT, 100 mA - Meets noise-sensitive analog supply requirements without LDO post-regulation. |
Pinout & Package
LM2750LDX-5.0/NOPB uses a 10-pin WSON (NGY/DSC) package, 3.00 mm × 3.00 mm, with exposed die-attach pad (DAP) for thermal conduction. The DAP must be soldered to a PCB copper plane for optimal thermal performance (RθJB = 21.5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (1, 2) | Regulated output node | Dual-pad connection lowers impedance and improves current sharing for 120 mA loads. |
| VIN (8, 9) | Input supply node | Dual-pad configuration minimizes trace inductance and input ripple coupling into sensitive analog sections. |
| GND (5, 6) | Power ground reference | Multiple GND pads reduce ground bounce and improve PSRR in high-frequency switching operation. |
| GND (3) | Ground (LM2750-5.0 only) | Fixed ground connection eliminates need for external feedback divider; distinguishes from adjustable LM2750-ADJ variant. |
| CAP+ (10) | Flying capacitor anode | Connects to positive terminal of 1 µF CFLY; internal switch routing optimized for minimal charge loss during φ2 phase. |
| CAP− (7) | Flying capacitor cathode | Connects to negative terminal of 1 µF CFLY; paired with CAP+ to form charge-transfer path during both phases. |
| SD (4) | Active-low shutdown control | Internally pulled down via 200 kΩ resistor; enables PWM dimming when driven by microcontroller GPIO. |
| DAP | Thermal ground / mechanical anchor | Exposed pad must be soldered to ≥100 mm² copper pour with ≥4 thermal vias to inner ground plane for reliable 125°C operation. |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless architecture | Eliminates magnetic components and associated EMI, enabling ultra-thin designs in mobile handsets and wearables. |
| Pre-regulation topology | Reduces input current ripple to negligible levels, preventing noise coupling into RF or audio signal paths. |
| Tightly controlled soft-start | 500 µs typical VOUT ramp prevents inrush-induced brownout in shared battery systems. |
| Integrated current limiting | 300 mA trip threshold protects device and load during short-circuit events without external sensing circuitry. |
| WSON thermal performance | RθJB = 21.5°C/W allows full 120 mA output at 85°C ambient without derating when properly mounted. |
Applications
| White LED Backlighting | Cellular SIM Card Power |
|---|---|
Use Scenario: Driving 4–6 parallel white LEDs in smartphone or PDA display backlight. IC Role / Device Role / Timing Role: Fixed 5-V regulated boost source replacing inductive DC/DC converters. Use Value: Delivers 120 mA at ±4% accuracy with <4 mVP-P ripple, eliminating visible LED flicker and enabling uniform brightness control. | Use Scenario: Providing clean 5-V supply to GSM/UMTS SIM card interface in dual-SIM phones. IC Role / Device Role / Timing Role: Low-noise, low-quiescent-power voltage booster for secure element communication. Use Value: <2 µA shutdown current extends standby time; pre-regulation prevents SIM card reset due to input rail noise. |
| Audio Amplifier Supply | EPOS Barcode Scanner |
Use Scenario: Powering Class AB headphone amplifier in portable media players. IC Role / Device Role / Timing Role: Low-ripple 5-V rail generator decoupled from noisy digital supply domains. Use Value: 4 mVP-P output ripple ensures THD+N remains below 0.01%, preserving audio fidelity without post-LDO filtering. | Use Scenario: Supplying 5-V logic and laser driver in handheld retail barcode scanners. IC Role / Device Role / Timing Role: Compact, efficient boost converter supporting intermittent high-current laser pulses. Use Value: 1.7 MHz switching enables fast transient response to 100 mA laser bursts while maintaining stable 5 V output. |
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 |
|---|---|---|---|
| TPS60403DBVR | Fixed 5-V output, 60 mA max IOUT, 1 MHz fSW, SOIC-8 package | Limited to lower current; lacks pre-regulation → higher VIN ripple | Choose for cost-sensitive, low-current designs where board area is less constrained. |
| MAX680ESA+ | Fixed 5-V output, 100 mA max IOUT, 10 kHz fSW, SOIC-8 package | Lower efficiency (65% avg), larger external capacitors required, no shutdown control | Choose only if legacy compatibility or ultra-low EMI (not RF-sensitive) is prioritized over size and efficiency. |
Compared with TPS60403DBVR and MAX680ESA+, the LM2750LDX-5.0/NOPB delivers 2× higher output current in half the footprint, achieves superior input noise rejection via pre-regulation, and supports PWM dimming through its active-low SD pin-making it optimal for modern portable LED and audio systems.
Availability
LM2750LDX-5.0/NOPB is available at Aetrix Electronics and suitable for white LED backlighting, cellular SIM card power, and audio amplifier supplies requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for LM2750LDX-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 power conversion and precision analog design.
The LM2750 product line delivers compact, low-noise switched-capacitor boost regulators for battery-powered portable electronics where inductor-free operation, minimal EMI, and tight output regulation are critical.
FAQ
What is the minimum input voltage required for full 120 mA output from the LM2750LDX-5.0/NOPB?
The LM2750LDX-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, maximum output current drops to 40 mA to maintain regulation and thermal safety. This behavior is specified in the Recommended Operating Conditions table of the official datasheet and reflects internal pre-regulator headroom requirements.
Can the LM2750LDX-5.0/NOPB be used with ceramic capacitors smaller than those recommended in the datasheet?
Yes, but with trade-offs: the LM2750LDX-5.0/NOPB requires ≥1 µF CIN and ≥1 µF COUT for loads ≤60 mA, and ≥2 µF for 120 mA loads. Reducing CFLY below 1 µF increases output resistance and voltage droop. Using undersized ceramics risks instability, excessive ripple, or failure to regulate under load-TI's recommended TDK C2012X7R1A225K (2.2 µF) and C1608X5R1A105K (1 µF) are validated for full-spec operation.
Does the LM2750LDX-5.0/NOPB require external feedback resistors to set its output voltage?
No. The LM2750LDX-5.0/NOPB is the fixed 5-V version and internally connects Pin 3 to GND, eliminating the need for external feedback resistors. This differs from the LM2750-ADJ variant, which uses Pin 3 as FB and requires an R1/R2 divider. The fixed-output architecture simplifies layout and improves accuracy by removing resistor tolerance and temperature drift effects.
How does the shutdown (SD) pin function on the LM2750LDX-5.0/NOPB, and what drive strength is needed?
The SD pin on the LM2750LDX-5.0/NOPB is active-low with an internal 200 kΩ pull-down resistor to GND. To enable the device, the driving source must supply ≥5 µA (at VIH ≥ 1.3 V) to overcome this pull-down. Microcontroller GPIO pins typically meet this requirement. Driving SD with PWM also enables direct LED brightness control without additional MOSFET circuitry.
What thermal considerations apply when using the LM2750LDX-5.0/NOPB at 120 mA continuous output?
At 120 mA and 3.6 V input, the LM2750LDX-5.0/NOPB dissipates ~120 mW. With RθJB = 21.5°C/W, junction temperature rise is ~2.6°C above board temperature-well within the 125°C limit. However, full thermal performance requires soldering the DAP to ≥100 mm² copper with ≥4 thermal vias to an internal ground plane; insufficient copper area causes rapid thermal derating.
LM2750LDX-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)
LM2750LDX-5.0/NOPB FAQ
1.How can I place an order for LM2750LDX-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2750LDX-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 LM2750LDX-5.0/NOPB reliable?
The price and inventory of LM2750LDX-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 LM2750LDX-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM2750LDX-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2750LDX-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2750LDX-5.0/NOPB?
LM2750LDX-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2750LDX-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 LM2750LDX-5.0/NOPB?
For technical support, including LM2750LDX-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2750LDX-5.0/NOPB requirements.
6.How does Aetrix verify that LM2750LDX-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2750LDX-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 LM2750LDX-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM2750LDX-5.0/NOPB?
All LM2750LDX-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2750LDX-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 LM2750LDX-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM2750LDX-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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