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Texas Instruments LM2750SDX-5.0
- Part No.:
- LM2750SDX-5.0
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM2750SDX-5.0.pdf
- Description:
- IC REG CHARGE PUMP 5V 1 10WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,293
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Product details
Overview
LM2750SDX-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 power supplies and Li-ion-to-5V conversion.
For engineers reviewing the LM2750SDX-5.0 datasheet, LM2750SDX-5.0 pinout, LM2750SDX-5.0 application, or LM2750SDX-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 (3mm × 3mm) package with exposed DAP for thermal management.
Technical Context
The LM2750SDX-5.0 implements a regulated switched-capacitor voltage doubler with internal pre-regulation: two-phase non-overlapping clocking controls flying capacitor (CFLY) charge/pump cycles, while modulating on-resistance of input-connected pass-transistors to regulate VOUT before doubling. This eliminates >90% of input current ripple typical in unregulated charge pumps.
It integrates soft-start (500µs turn-on time), overcurrent limiting (300mA typ.), thermal shutdown (150°C trip, 135°C release), and an active-low shutdown pin with internal 200kΩ pull-down. The fixed 5.0V output version uses pin 3 as GND (not FB), distinguishing it from the adjustable LM2750-ADJ variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VOUT | 5.0V ±4% - tightly regulated output enabling stable bias for analog circuits and LEDs without post-regulation. |
| VIN Range | 2.7V to 5.6V - supports full Li-ion battery discharge curve (2.7V–4.2V) plus USB 5V margin. |
| IOUT Max | 120mA @ VIN ≥2.9V - sufficient for driving 4–6 white LEDs in parallel or powering low-noise audio amplifiers. |
| fSW | 1.7MHz fixed - enables use of tiny 1µF ceramic capacitors and minimizes EMI filtering requirements. |
| VRipple | 4mVp-p @ COUT=10µF, IOUT=100mA - low enough for noise-sensitive RF or audio supply rails. |
| Efficiency | 85% peak @ VIN=2.9V, IOUT=120mA; 70% avg over 2.9V–4.2V Li-ion range - extends battery runtime in portable devices. |
| ISD | <2µA shutdown current - preserves battery life during system sleep modes. |
| θJA | 55°C/W (WSON-10) - enables full 120mA load without derating when PCB includes thermal vias to internal ground plane. |
Pinout & Package
LM2750SDX-5.0 is housed in a 10-pin WSON (3mm × 3mm) package with exposed die-attach pad (DAP) for enhanced thermal dissipation. Pin 3 is GND (not FB), confirming fixed-output configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | VOUT | Regulated 5.0V output - must be connected in parallel to minimize impedance; shared high-current path for load. |
| 3 | GND | Ground reference for regulation - tied internally to feedback network; distinct from ADJ variant's FB pin. |
| 4 | SD | Active-low shutdown - internal 200kΩ pull-down ensures safe default-off state; logic-high ≥1.3V enables operation. |
| 5, 6, DAP | GND | Power ground return - DAP requires soldered thermal connection to PCB ground plane for thermal performance. |
| 7 | CAP− | Flying capacitor negative terminal - forms half of charge-transfer path; routing must minimize loop area with CAP+. |
| 8, 9 | VIN | Input voltage supply - dual pins reduce IR drop and improve current sharing; must connect directly to CIN. |
| 10 | CAP+ | Flying capacitor positive terminal - completes charge-pump switching loop; critical for efficiency and ripple control. |
Key Features
| Feature | Design Value |
|---|---|
| Inductorless architecture | Requires only three 0603/0805 ceramic capacitors (CIN, COUT, CFLY) - eliminates magnetic EMI, saves board space, reduces BOM cost. |
| Pre-regulation topology | Reduces input current ripple to negligible levels - keeps battery line (VIN) virtually noise-free for sensitive analog/RF subsystems. |
| Tightly controlled soft-start | 500µs VOUT ramp time - prevents inrush current spikes that could brown-out MCU or reset logic during power-up. |
| Integrated protection | Thermal shutdown (150°C), output current limit (300mA), and short-circuit robustness - eliminates need for external fault management circuitry. |
| Low-noise output | 4mVp-p ripple at 100mA with 10µF COUT - meets stringent noise requirements for audio amplifiers and precision ADC references. |
| Ultra-low shutdown current | <2µA - enables multi-year battery life in always-on sensor nodes or SIM card power applications. |
Applications
| White LED Display Power | Cellular Phone SIM Card Supply |
|---|---|
|
Use Scenario: Powering 4–6 parallel white LEDs in compact handheld displays with single-cell Li-ion battery input. IC Role / Device Role / Timing Role: Fixed 5.0V switched-capacitor boost regulator providing stable, low-noise bias independent of battery voltage sag. Use Value: Eliminates inductor size/cost/EMI while maintaining <4mVp-p ripple - ensures uniform LED brightness across 2.7V–4.2V battery range. |
Use Scenario: Generating clean 5.0V rail for SIM card interface circuitry in GSM/UMTS handsets during deep-sleep and active states. IC Role / Device Role / Timing Role: Low-quiescent, shutdown-capable voltage booster ensuring secure power delivery with <2µA off-state leakage. Use Value: Meets ISO/IEC 7816-3 SIM card voltage tolerance (5.0V ±4%) and ultra-low standby drain - extends standby time by >30% vs. LDO solutions. |
| Audio Amplifier Bias Supply | Li-Ion to 5V General-Purpose Conversion |
|
Use Scenario: Supplying low-noise 5.0V bias to Class AB headphone amplifiers in portable media players. IC Role / Device Role / Timing Role: High-PSRR, low-ripple boost converter decoupling amplifier from noisy digital supply domains. Use Value: 4mVp-p output ripple prevents audible hiss; 85% peak efficiency extends playback time per charge cycle. |
Use Scenario: Replacing linear regulators in legacy 5V systems powered by single-cell Li-ion batteries (e.g., Bluetooth modules, wearables). IC Role / Device Role / Timing Role: Efficient, compact DC-DC solution delivering regulated 5V without inductor footprint or thermal derating. Use Value: 70% average efficiency over full Li-ion range doubles runtime vs. 3.3V LDO + 5V boost converter cascades; WSON-10 fits 3×3mm footprints. |
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 5.0V output, 60mA max IOUT, 1MHz fSW, SOIC-8 package - lower current, higher pin count, no thermal pad. | Limited to low-power peripherals (e.g., sensors, EEPROMs); unsuitable for LED/audio loads requiring >60mA. | Select when board space allows SOIC and load current ≤60mA; avoid for thermal-constrained or high-current designs. |
| MAX682ESA+ | Adjustable 3.3V–5.0V output, 100mA max IOUT, 1.2MHz fSW, 8-pin SO - no fixed 5V option, no integrated thermal shutdown. | Requires external feedback resistors and thermal monitoring; less robust for unattended operation. | Choose only if adjustable output is mandatory and system-level thermal protection is already implemented. |
Compared with TPS60403DBVR and MAX682ESA+, LM2750SDX-5.0 delivers 2× higher output current in a thermally optimized WSON package with built-in shutdown and thermal protection - making it the only choice for space-constrained, battery-powered 5V loads demanding >100mA and zero external components beyond capacitors.
Availability
LM2750SDX-5.0 is available at Aetrix Electronics and suitable for white LED lighting, cellular SIM card power, and audio amplifier biasing requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LM2750SDX-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 ICs, with decades of expertise in high-efficiency DC-DC conversion and battery-powered system design.
The LM2750 product line was engineered specifically for ultra-compact, inductorless 5V generation in portable electronics - prioritizing low EMI, minimal external components, and robust operation across full Li-ion voltage range.
FAQ
What is the maximum continuous output current of the LM2750SDX-5.0?
The LM2750SDX-5.0 delivers up to 120mA continuously when input voltage is 2.9V or higher. At lower input voltages (2.7V–2.9V), maximum output current is limited to 40mA to maintain regulation and thermal safety. Output current capability drops outside these ranges due to pre-regulator headroom constraints and thermal limits - sustained operation above 120mA risks thermal shutdown.
Does the LM2750SDX-5.0 require an inductor?
No, the LM2750SDX-5.0 is an inductorless switched-capacitor boost regulator. It uses only three external ceramic capacitors: CIN (input), COUT (output), and CFLY (flying). This eliminates magnetic EMI, reduces solution size, and lowers BOM cost - a key differentiator from inductive boost converters. The architecture relies on charge transfer via CFLY at 1.7MHz to double and regulate VIN to 5.0V.
What is the purpose of the die-attach pad (DAP) on the LM2750SDX-5.0 package?
The exposed die-attach pad (DAP) on the LM2750SDX-5.0's WSON-10 package serves as the primary thermal conduction path from the silicon die to the PCB. It must be soldered to a large copper pour connected via multiple thermal vias to internal ground planes. Proper DAP implementation reduces θJA from ~150°C/W (no thermal pads) to the specified 55°C/W - enabling full 120mA output without derating or thermal cycling.
How does the LM2750SDX-5.0 achieve low input current ripple?
The LM2750SDX-5.0 achieves ultra-low input current ripple through pre-regulation: it modulates the on-resistance of input-connected switches *before* charge transfer to the flying capacitor, rather than regulating after voltage doubling. This technique minimizes instantaneous current draw from VIN, keeping the battery line virtually noise-free - critical for co-located RF and analog circuits. Measured input ripple is typically <100µAp-p under full load.
Can the LM2750SDX-5.0 be used with input voltages below 2.7V?
No - the absolute minimum input voltage for the LM2750SDX-5.0 is 2.7V, as specified in Absolute Maximum Ratings and Operating Ratings. Operation below 2.7V violates the device's functional specification: regulation fails, output voltage collapses, and internal circuitry may behave unpredictably. For sub-2.7V inputs, consider TI's LM2751 (2.5V min) or alternative architectures like buck-boost regulators.
LM2750SDX-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)
LM2750SDX-5.0 FAQ
1.How can I place an order for LM2750SDX-5.0 through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2750SDX-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 LM2750SDX-5.0 reliable?
The price and inventory of LM2750SDX-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 LM2750SDX-5.0 is usually 5 days.
3.What payment methods are accepted for LM2750SDX-5.0?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2750SDX-5.0 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2750SDX-5.0?
LM2750SDX-5.0 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2750SDX-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 LM2750SDX-5.0?
For technical support, including LM2750SDX-5.0 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2750SDX-5.0 requirements.
6.How does Aetrix verify that LM2750SDX-5.0 is sourced from the original manufacturer or authorized distributors?
All LM2750SDX-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 LM2750SDX-5.0 meets industry standards.
7.What is the process for return or replacement of LM2750SDX-5.0?
All LM2750SDX-5.0 units undergo pre-shipment inspection (PSI). If there is an issue with LM2750SDX-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 LM2750SDX-5.0 part is unused and in its original packaging.
Return procedure for LM2750SDX-5.0:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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