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Texas Instruments LM2750SD-5.0
- Part No.:
- LM2750SD-5.0
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM2750SD-5.0.pdf
- Description:
- IC REG CHARGE PUMP 5V 1 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,680
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Product details
Overview
LM2750SD-5.0 from Texas Instruments is a fixed 5.0V ±4% switched-capacitor boost regulator delivering up to 120mA output current at VIN ≥2.9V, operating from 2.7V to 5.6V input, with 1.7MHz fixed switching frequency and <4mVp-p output ripple at 100mA - used in white LED display backlighting and Li-ion-to-5V conversion for portable audio amplifiers.
For engineers reviewing the LM2750SD-5.0 datasheet, LM2750SD-5.0 pinout, LM2750SD-5.0 application, or LM2750SD-5.0 equivalent, key selection considerations include its inductorless 3-capacitor architecture, pre-regulation for ultra-low input current ripple, thermal shutdown at 150°C, shutdown supply current <2µA, and WSON-10 package with DAP for enhanced thermal dissipation.
Technical Context
The LM2750SD-5.0 implements a regulated switched-capacitor voltage doubler with internal pre-regulation: two-phase non-overlapping clocking controls four internal MOSFET switches, modulating input-connected switch resistance to regulate VOUT before charge transfer. Its architecture eliminates inductive EMI while maintaining tight output regulation across wide input range.
Pre-regulation reduces input current ripple to negligible levels by controlling conduction in the charge phase (φ1), while the 1.7MHz fixed-frequency operation enables small ceramic capacitors (CFLY = 1µF, CIN/COUT = 2.2µF) and yields low-noise output suitable for noise-sensitive analog circuits like audio amplifier supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0V ±4% - tightly regulated over full load and input range; ensures stable bias for LEDs and analog ICs without external feedback. |
| Input Voltage Range | 2.7V to 5.6V - supports full discharge curve of single-cell Li-ion (2.7V–4.2V) plus margin for USB or boosted rails. |
| Max Output Current | 120mA @ VIN ≥2.9V - sufficient for driving 4–6 white LEDs in parallel or powering low-power audio codecs. |
| Switching Frequency | 1.7MHz (fixed) - enables use of tiny 1µF flying capacitor and 2.2µF input/output MLCCs; minimizes EMI and solution footprint. |
| Output Ripple | <4mVp-p @ COUT=10µF, IOUT=100mA - meets low-noise requirements for analog signal chains and precision references. |
| Shutdown Current | <2µA - preserves battery life in standby mode; internal 200kΩ pull-down on SD pin simplifies control interface. |
| Thermal Shutdown | 150°C (typ.) - protects against thermal runaway during sustained high-current operation; releases at 135°C. |
Pinout & Package
LM2750SD-5.0 is housed in a 3mm × 3mm, 10-pin WSON package (TI package code NGY0010A/DSC0010A) with exposed die-attach pad (DAP) for low thermal resistance (θJA = 55°C/W). The DAP must be soldered to a large PCB ground plane with multiple thermal vias for optimal power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | VOUT | Regulated 5.0V output - dual pins reduce trace inductance and improve current sharing for low-impedance output path. |
| 3 | GND (LM2750-5.0) | Ground reference for regulation - tied internally to feedback node; must connect to system ground with low-impedance path. |
| 4 | SD | Active-low shutdown - internal 200kΩ pull-down ensures safe default-off state; logic-high ≥1.3V enables operation. |
| 5, 6 | GND | Power ground - connects to internal switch nodes and substrate; requires direct copper fill connection to DAP and CIN/COUT grounds. |
| 7 | CAP− | Flying capacitor negative terminal - forms half of charge-transfer path; must be placed adjacent to IC with minimal loop area. |
| 8, 9 | VIN | Input voltage supply - dual pins lower series resistance and inductance; critical for minimizing input ripple and EMI. |
| 10 | CAP+ | Flying capacitor positive terminal - completes charge-pump loop; paired with CAP− to enable voltage doubling action. |
| DAP | Die-Attach Pad | Thermal and electrical ground - primary heat path to PCB; must be soldered and connected to ground plane for thermal stability. |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless architecture | Eliminates magnetic components and associated EMI; reduces BOM count to only three MLCCs (CIN, COUT, CFLY). |
| Tightly controlled soft-start | 500µs typical VOUT ramp time - prevents inrush current spikes that could destabilize shared input rails or trigger upstream protection. |
| Pre-regulation topology | Minimizes input current ripple to near-zero - preserves battery line integrity and avoids noise coupling into sensitive RF/analog sections. |
| Overcurrent and thermal protection | 300mA current limit + 150°C thermal shutdown - safeguards device and load during short-circuit or overload conditions without external circuitry. |
| Low-noise 1.7MHz operation | Enables use of small, low-ESR ceramic capacitors and keeps switching harmonics outside audio band - ideal for portable audio applications. |
Applications
| White LED Display Backlighting | Cellular Phone SIM Card Power |
|---|---|
|
Use Scenario: Driving 4–6 parallel white LEDs in compact handheld displays requiring stable 5V bias under varying battery voltage. IC Role / Device Role / Timing Role: Fixed-output switched-capacitor boost converter providing regulated 5.0V rail independent of Li-ion cell voltage decay. Use Value: Eliminates need for inductor-based DC/DC, reducing solution height and EMI; ±4% tolerance ensures consistent LED brightness across 2.7V–4.2V input range. |
Use Scenario: Supplying clean 5V power to legacy SIM card interfaces in modern smartphones where main PMIC lacks dedicated 5V LDO. IC Role / Device Role / Timing Role: Low-quiescent, low-noise boost regulator delivering regulated 5V from shared battery rail with minimal input disturbance. Use Value: <2µA shutdown current extends standby time; pre-regulation prevents SIM card reset due to input ripple during RF transmission bursts. |
| Audio Amplifier Power Supply | Li-Ion to 5V General-Purpose Conversion |
|
Use Scenario: Powering Class AB or low-power Class D audio amplifiers in Bluetooth headsets and portable speakers. IC Role / Device Role / Timing Role: Low-ripple 5V source enabling high PSRR performance and low THD+N in analog audio stages. Use Value: <4mVp-p output ripple at 100mA avoids audible switching artifacts; 1.7MHz frequency places noise beyond audio band. |
Use Scenario: Generating 5V for USB-peripheral emulation, smartcard readers, or MCU peripherals in battery-powered IoT edge nodes. IC Role / Device Role / Timing Role: Compact, efficient voltage booster replacing discrete charge-pump ICs or inefficient linear regulators. Use Value: 85% peak efficiency at 2.9V→5V conversion extends runtime; WSON-10 package fits in space-constrained modules ≤10mm² footprint. |
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 |
|---|---|---|---|
| MAX680ESA+ | Fixed 5V output, ±1.5% accuracy, 100mA max, 10-pin SOIC package, no shutdown pin. | Lacks active shutdown and thermal protection; higher output accuracy but lower current capability and larger footprint. | Choose MAX680ESA+ only if ±1.5% VOUT tolerance is mandatory and board space allows SOIC; LM2750SD-5.0 preferred for battery life and thermal safety. |
| TPS60403DBVR | Adjustable output (1.5V–5.5V), 60mA max, 5-pin SOT-23, integrated soft-start, 1.1MHz switching. | Lower current, no thermal shutdown, smaller package but no DAP - unsuitable for >60mA continuous loads or thermally constrained layouts. | Use TPS60403DBVR only for ultra-low-power, adjustable-voltage applications below 60mA; LM2750SD-5.0 is superior for 120mA fixed-5V needs with robust protection. |
Compared with MAX680ESA+ and TPS60403DBVR, LM2750SD-5.0 uniquely combines 120mA output, integrated thermal shutdown, <2µA shutdown current, and WSON-10 thermal performance - making it the only option among the three qualified for sustained high-current, battery-critical portable designs.
Availability
LM2750SD-5.0 is available at Aetrix Electronics and suitable for white LED backlighting, cellular SIM card power, audio amplifier supplies, and general-purpose Li-ion-to-5V conversion requiring stable component supply across production lifecycles.
Supply support for LM2750SD-5.0 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 power conversion ICs.
The LM2750 product line delivers inductorless, low-noise switched-capacitor boost solutions optimized for space- and noise-constrained portable electronics - targeting battery-powered displays, audio systems, and secure interface modules.
FAQ
What is the maximum output current capability of the LM2750SD-5.0 under typical operating conditions?
The LM2750SD-5.0 delivers up to 120mA of regulated output current when the input voltage is between 2.9V and 5.6V. At lower input voltages (2.7V–2.9V), maximum output current is reduced to 40mA to maintain regulation. This behavior is defined in the Electrical Characteristics table and confirmed by the Output Voltage vs. Output Current curves in the datasheet. The LM2750SD-5.0 achieves this using pre-regulation and a 1.7MHz switching frequency to minimize losses.
Does the LM2750SD-5.0 require an external feedback resistor network?
No, the LM2750SD-5.0 does not require external feedback resistors. It is the fixed 5.0V output variant - pin 3 is internally connected to GND, not FB. Only the LM2750-ADJ variant uses an external resistor divider on pin 3 (FB) to set output voltage between 3.8V and 5.2V. The LM2750SD-5.0 integrates all regulation circuitry internally, simplifying layout and reducing component count.
What are the recommended capacitor values and types for the LM2750SD-5.0?
Texas Instruments specifies 2.2µF for CIN and COUT, and 1.0µF for CFLY - all using low-ESR X7R or X5R multilayer ceramic capacitors (e.g., TDK C2012X7R1A225K). These values ensure stable regulation, low ripple (<4mVp-p), and reliable startup across temperature. Tantalum or aluminum electrolytic capacitors are explicitly discouraged due to high ESR, which degrades efficiency and increases ripple.
How does the shutdown (SD) pin function on the LM2750SD-5.0?
The SD pin on the LM2750SD-5.0 is an active-low logic input with an internal 200kΩ pull-down resistor to GND. When pulled to GND or left floating, the device enters shutdown mode and draws <2µA. To enable operation, SD must be driven to a logic-high voltage ≥1.3V (typically connected to a microcontroller GPIO or power-good signal). The internal pull-down ensures fail-safe default-off behavior during power-up sequencing.
Can the LM2750SD-5.0 operate reliably at ambient temperatures up to 85°C?
Yes, the LM2750SD-5.0 is rated for ambient temperatures from –40°C to +85°C per its Operating Ratings. Its WSON-10 package with exposed DAP, combined with proper PCB thermal design (copper fill, thermal vias), enables operation at full 120mA load within this range. Thermal shutdown engages only at junction temperature ≥150°C (typ.), providing margin for transient overloads. Derating is not required at 85°C ambient under typical layout conditions.
LM2750SD-5.0 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 FAQ
1.How can I place an order for LM2750SD-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2750SD-5.0 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 reliable?
The price and inventory of LM2750SD-5.0 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 is usually 5 days.
3.What payment methods are accepted for LM2750SD-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2750SD-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2750SD-5.0?
LM2750SD-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2750SD-5.0 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?
For technical support, including LM2750SD-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2750SD-5.0 requirements.
6.How does Aetrix verify that LM2750SD-5.0 is sourced from the original manufacturer or authorized distributors?
All LM2750SD-5.0 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 meets industry standards.
7.What is the process for return or replacement of LM2750SD-5.0?
All LM2750SD-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM2750SD-5.0, 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 part is unused and in its original packaging.
Return procedure for LM2750SD-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM2750SD-5.0 Tags
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