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Texas Instruments LM2750LD-5.0/NOPB
- Part No.:
- LM2750LD-5.0/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM2750LD-5.0/NOPB.pdf
- Description:
- IC REG CHARGE PUMP 5V 1 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,969
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Product details
Overview
LM2750LD-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 LM2750LD-5.0/NOPB datasheet, LM2750LD-5.0/NOPB pinout, LM2750LD-5.0/NOPB application, or LM2750LD-5.0/NOPB equivalent, key selection criteria include its pre-regulated input ripple suppression, WSON-10 thermal performance (RθJA = 45.6°C/W), 5 Ω typical output resistance, and strict 2.2 µF minimum COUT requirement for 120 mA loads.
Technical Context
The LM2750LD-5.0/NOPB implements a two-phase non-overlapping switched-capacitor doubler with linear pre-regulation: during φ₁, CFLY charges to VIN; during φ₂, it stacks atop VIN to generate ~2×VIN, then regulation occurs by modulating the on-resistance of input-connected switches before voltage doubling. This architecture achieves <4 mVp-p output ripple with 10 µF COUT and eliminates input current spikes.
Its internal 1.7 MHz oscillator drives synchronous charge transfer, while soft-start limits inrush current over 500 µs. Thermal shutdown engages at 150°C (typical) and releases at 135°C (typical), and output current limiting caps at 300 mA (typical) during short-circuit events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VOUT | 5 V ±4% - Ensures stable 5-V rail for logic-compatible peripherals without external feedback network. |
| VIN Range | 2.7 V to 5.6 V - Supports full Li-ion battery discharge curve (2.7 V cutoff) and USB 5-V input. |
| IOUT Max | 120 mA @ VIN ≥2.9 V - Sufficient for driving 4–6 white LEDs in series or powering Class AB audio amplifiers. |
| fSW | 1.7 MHz fixed - Enables use of small 1 µF flying capacitor and minimizes EMI in sensitive RF sections. |
| Shutdown IQ | <2 µA - Preserves battery life in always-on handheld devices during sleep mode. |
| Output Ripple | 4 mVp-p @ 10 µF COUT, 100 mA - Meets low-noise requirements for analog audio signal chains. |
| Efficiency | 85% peak / 70% avg (Li-ion range) - Reduces thermal load in sealed enclosures versus LDO-based solutions. |
| ROUT | 5 Ω typical - Predictable VOUT droop under load; enables accurate current-sense-free design margining. |
Pinout & Package
LM2750LD-5.0/NOPB uses a 3.00 mm × 3.00 mm, 10-pin WSON package (TI's NGY/DSC variant) 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 (pins 1, 2) | Regulated output node | Two parallel pins reduce trace impedance and improve current sharing for 120 mA loads. |
| VIN (pins 8, 9) | Input supply connection | Dual pins minimize input path resistance and suppress high-frequency noise coupling into VIN. |
| GND (pins 5, 6) | Power ground return | Low-inductance ground path essential for stable switching operation and EMI control. |
| CAP+ (pin 10) | Flying capacitor anode | Connects to positive terminal of 1 µF ceramic flying capacitor; requires shortest possible PCB trace. |
| CAP− (pin 7) | Flying capacitor cathode | Connects to negative terminal of 1 µF flying capacitor; forms critical charge-transfer loop with CAP+. |
| SD (pin 4) | Active-low shutdown control | Pulled low internally via 200 kΩ resistor; logic-high ≥1.3 V enables operation; supports PWM dimming. |
| GND/FB (pin 3) | Ground reference (LM2750-5.0) | Fixed 5-V version ties pin 3 directly to GND; not used for feedback-simplifies layout vs. adjustable variant. |
| DAP | Thermal & electrical ground | Exposed pad must be soldered to ≥200 mm² copper pour with ≥4 thermal vias to inner ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Pre-regulation architecture | Reduces input current ripple to negligible levels-keeps battery line (VIN) virtually noise-free for co-located RF ICs. |
| Inductorless design | Requires only three 0402/0603 ceramic capacitors (CIN, COUT, CFLY)-eliminates magnetic EMI and saves board space in ultra-thin devices. |
| Tightly controlled soft-start | 500 µs typical VOUT ramp time prevents inrush current damage to downstream capacitors and LEDs. |
| Integrated thermal shutdown | Auto-recovers at 135°C after tripping at 150°C-enables robust operation in thermally constrained handheld enclosures. |
| Output current limiting | 300 mA (typical) short-circuit protection-prevents catastrophic failure during accidental VOUT-to-GND faults. |
| WSON-10 thermal package | RθJB = 21.5°C/W enables full 120 mA output without derating in standard 2-layer PCB layouts. |
Applications
| White LED Display Backlighting | Cellular Phone SIM Card Power |
|---|---|
Use Scenario: Driving 4–6串联 white LEDs in smartphone LCD backlight modules requiring stable 5-V bias. IC Role / Device Role / Timing Role: Fixed-output switched-capacitor boost regulator providing regulated 5-V rail with <4 mVp-p ripple. Use Value: Eliminates inductor size/cost while meeting display contrast and flicker specifications across full battery voltage range (2.7–4.2 V). | Use Scenario: Supplying clean 5-V power to SIM card interface circuitry in dual-SIM mobile handsets. IC Role / Device Role / Timing Role: Low-noise, low-quiescent-current boost converter enabling SIM hot-swap and secure element operation. Use Value: Pre-regulation ensures SIM card VCC remains free of switching noise that could corrupt I²C communication or cryptographic operations. |
| Portable Audio Amplifier Supply | EPOS Barcode Scanner Power |
Use Scenario: Powering Class AB headphone amplifiers in Bluetooth earbuds where EMI-sensitive analog stages are adjacent to digital radios. IC Role / Device Role / Timing Role: High-frequency (1.7 MHz) boost regulator minimizing beat frequencies with 2.4 GHz BLE radio clock. Use Value: 1.7 MHz switching avoids audible interference bands and simplifies filtering versus lower-frequency converters. | Use Scenario: Generating 5-V rail for laser diode driver and CMOS image sensor in handheld retail barcode scanners. IC Role / Device Role / Timing Role: Compact, efficient boost source supporting burst-mode scanning with fast turn-on (<0.5 ms). Use Value: 500 µs soft-start and 0.5 ms VOUT turnon enable rapid wake-from-sleep operation without mechanical shutter delay. |
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 |
|---|---|---|---|
| TPS60110PWP | Fixed 5-V output, 100 mA max, 1.1 MHz fSW, SOIC-8 package (larger footprint, higher RθJA = 75°C/W) | Lower output current and slower switching limit suitability for high-brightness LED arrays and RF-sensitive designs. | Select when SOIC-8 compatibility or legacy footprint reuse is required; verify thermal margin at 100 mA. |
| MAX680ESA+ | Fixed 5-V output, 125 mA max, 10 kHz fSW, SOIC-8, no shutdown pin | Low-frequency operation increases EMI risk near RF sections; lack of SD pin prevents PWM dimming or system-level power sequencing. | Choose only for cost-sensitive, non-RF, non-dimming applications where 10 kHz ripple is acceptable. |
Compared with TPS60110PWP and MAX680ESA+, LM2750LD-5.0/NOPB delivers 20% higher output current in half the footprint, achieves 15× higher switching frequency for superior EMI performance, and integrates active shutdown control-making it optimal for space-constrained, noise-sensitive portable electronics.
Availability
LM2750LD-5.0/NOPB is available at Aetrix Electronics and suitable for white LED display backlighting, cellular phone SIM card power, portable audio amplifier supplies, EPOS barcode scanner power, and industrial handheld radio power conversion requiring stable component supply and long-term production continuity.
Supply support for LM2750LD-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 technologies, with over 90 years of innovation in high-reliability silicon design.
The LM2750 product line delivers compact, inductorless DC/DC solutions for battery-powered portable electronics-designed specifically to replace inefficient charge pumps and bulky inductor-based boost converters in space- and noise-constrained applications.
FAQ
What is the minimum input voltage required for full 120 mA output from the LM2750LD-5.0/NOPB?
The LM2750LD-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-the maximum supported output current drops to 40 mA. This behavior is due to internal pre-regulation headroom requirements and is specified in the Recommended Operating Conditions table of the datasheet. Designers must ensure system battery discharge profiles maintain VIN ≥2.9 V during peak-load conditions to sustain full rated output.
Can the LM2750LD-5.0/NOPB be used without the flying capacitor (CFLY)?
No, the LM2750LD-5.0/NOPB cannot operate without the 1 µF flying capacitor (CFLY). This external capacitor is fundamental to the switched-capacitor doubler topology: it stores charge during the φ₁ phase and transfers it to boost VOUT during φ₂. Omitting CFLY disables voltage conversion entirely. TI specifies CFLY = 1 µF (TDK C1608X5R1A105K or equivalent), and deviation below 0.82 µF risks increased output resistance and regulation loss per the output resistance model in the datasheet.
Does the LM2750LD-5.0/NOPB require external feedback resistors to set its output voltage?
No, the LM2750LD-5.0/NOPB does not require external feedback resistors. As a fixed 5-V output variant, it integrates internal feedback and regulation circuitry-pin 3 is hardwired to GND (not FB), eliminating the need for external resistor dividers. This contrasts with the LM2750-ADJ variant, which requires R1/R2 to program VOUT. The fixed architecture simplifies layout, reduces BOM count, and improves long-term output voltage stability by removing resistor tolerance drift effects.
How does the shutdown (SD) pin function on the LM2750LD-5.0/NOPB, and what pull-up strength is needed?
The SD pin on the LM2750LD-5.0/NOPB is an active-low logic input with an internal 200 kΩ pulldown resistor to GND. To enable the device, the SD pin must be driven to ≥1.3 V (VIH min); leaving it floating defaults to shutdown. A microcontroller GPIO or logic buffer must source sufficient current to overcome the pulldown-e.g., a 10 kΩ pull-up to 3.3 V draws 330 µA, well within typical I/O drive capability. This configuration also enables PWM dimming by toggling SD at ≤1 kHz without affecting regulation stability.
What is the purpose of the dual VIN and dual VOUT pins on the LM2750LD-5.0/NOPB package?
The dual VIN (pins 8, 9) and dual VOUT (pins 1, 2) on the LM2750LD-5.0/NOPB serve to reduce parasitic resistance and inductance in high-frequency switching paths. Each pair carries half the total current-e.g., 60 mA per VIN pin at 120 mA load-lowering IR drop and improving efficiency. More critically, splitting connections minimizes loop area for the high di/dt flying capacitor charge/discharge currents, directly reducing radiated EMI. TI's layout guidelines mandate short, direct traces from each pin to its respective capacitor to preserve this benefit.
LM2750LD-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)
LM2750LD-5.0/NOPB FAQ
1.How can I place an order for LM2750LD-5.0/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2750LD-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 LM2750LD-5.0/NOPB reliable?
The price and inventory of LM2750LD-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 LM2750LD-5.0/NOPB is usually 5 days.
3.What payment methods are accepted for LM2750LD-5.0/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2750LD-5.0/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2750LD-5.0/NOPB?
LM2750LD-5.0/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2750LD-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 LM2750LD-5.0/NOPB?
For technical support, including LM2750LD-5.0/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2750LD-5.0/NOPB requirements.
6.How does Aetrix verify that LM2750LD-5.0/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2750LD-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 LM2750LD-5.0/NOPB meets industry standards.
7.What is the process for return or replacement of LM2750LD-5.0/NOPB?
All LM2750LD-5.0/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2750LD-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 LM2750LD-5.0/NOPB part is unused and in its original packaging.
Return procedure for LM2750LD-5.0/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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