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Texas Instruments LM2753SDX/NOPB
- Part No.:
- LM2753SDX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM2753SDX/NOPB.pdf
- Description:
- IC LED DRV RGLTR PWM 400MA 10SON
- Quantity:
- Payment:
- Shipping:
Inventory:3,657
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Product details
Overview
LM2753SDX/NOPB from Texas Instruments is a high-power switched-capacitor voltage converter and flash LED driver IC. It delivers regulated 5-V output (VOUT) across 3 V–5.5 V input, supplies up to 200 mA continuous or 400 mA pulsed flash current, features <1 µA shutdown current and 10 ns flash turnon time, and targets camera flash circuits in mobile devices.
For engineers reviewing the LM2753SDX/NOPB datasheet, LM2753SDX/NOPB pinout, LM2753SDX/NOPB application, or LM2753SDX/NOPB equivalent, key selection criteria include regulated 5-V output stability under pulsed load, ultra-fast IOUT switching for strobe timing control, PFM efficiency at light loads, and WSON-10 thermal performance in space-constrained camera modules.
Technical Context
The LM2753SDX/NOPB integrates a multi-level switch array charge pump with pulse-frequency modulation (PFM) regulation to maintain 5-V output across 3 V–5.5 V input. Its internal FET connects VOUT to IOUT in <10 ns when FLASH is asserted, enabling precise strobe timing for flash LEDs.
It operates with three external ceramic capacitors only-no inductor required-and includes soft-start (640 µs VOUT ramp), thermal shutdown (140°C trip), and internal 300 kΩ pulldowns on EN and FLASH pins for robust logic interface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5 V ±5% regulated; maintains stable rail for flash LED biasing across full input range |
| Continuous Output Current | 200 mA at VOUT; sufficient for torch-mode illumination or auxiliary 5-V loads |
| Pulsed Flash Current | 400 mA for ≤500 ms; enables high-intensity camera flash without thermal derating |
| Quiescent Current | 60 µA typical; minimizes battery drain during standby in portable systems |
| Shutdown Current | 0.1 µA typical; supports ultra-low-power system sleep states |
| Switching Frequency | 725 kHz typical; balances efficiency, capacitor size, and EMI in compact layouts |
| Flash Turnon Time | 10 ns typical; ensures sub-microsecond strobe edge control for synchronization |
Pinout & Package
LM2753SDX/NOPB uses a 10-pin WSON package (3.0 mm × 3.0 mm × 0.8 mm) with exposed die-attach pad tied to GND for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1+ | Flying capacitor terminal | Connects to positive side of 1 µF flying capacitor; critical for charge-pump energy transfer |
| VIN | Input power supply | Accepts 3 V–5.5 V Li-ion battery input; powers all internal circuitry and charge pump |
| C1− | Flying capacitor terminal | Connects to negative side of 1 µF flying capacitor; completes doubler switching path |
| FLASH | Digital control input | Active-HIGH logic signal enabling IOUT-to-VOUT FET; internal 300 kΩ pulldown ensures safe default OFF |
| GND | Ground reference | Three dedicated GND pins (pins 5, 7, 10) and exposed pad reduce impedance and improve thermal conduction |
| EN | Enable control input | Active-HIGH logic enable; internal 300 kΩ pulldown guarantees shutdown on power-up until asserted |
| IOUT | Flash output terminal | Switched 5-V output node; connects directly to flash LED anode via ballast resistor |
| VOUT | Regulated output | Stable 5-V rail for torch mode or auxiliary loads; sourced by charge pump with PFM regulation |
Key Features
| Feature | Design Value |
|---|---|
| Inductor-less architecture | Uses only three low-ESR ceramic capacitors-reduces BOM count, PCB area, and EMI vs inductive solutions |
| Pulse-frequency modulation | Idles at light loads to achieve 60 µA quiescent current; extends battery life in always-on camera modules |
| Multi-level switch array | Automatically adjusts ON-resistance based on VIN to optimize ripple and efficiency across 3 V–5.5 V range |
| Thermal protection | Shuts down at 140°C junction temperature and recovers at 125°C-prevents damage during sustained flash bursts |
| Soft-start ramp | 640 µs VOUT rise time prevents inrush current and avoids system brownout during power-up |
Applications
| Cell-Phone Camera Flash | Digital Still Cameras |
|---|---|
Use Scenario: High-intensity, short-duration illumination for smartphone rear/front cameras during low-light capture. IC Role / Device Role / Timing Role: Flash LED driver with 10 ns IOUT turnon for precise strobe synchronization with image sensor exposure timing. Use Value: Enables 400 mA pulsed current without external inductor, reducing module height and cost while meeting JEDEC flash duration specs. | Use Scenario: Dual-mode lighting-continuous torch for preview, pulsed flash for capture-in compact digital cameras. IC Role / Device Role / Timing Role: Dual-rail power source: VOUT supplies 200 mA torch current; IOUT delivers 400 mA flash pulses with independent logic control. Use Value: Eliminates need for separate DC/DC and LED driver ICs, simplifying layout and reducing component count in tight optical assemblies. |
| Barcode Scanners | Handheld Data Terminals |
Use Scenario: Short-burst illumination for rapid barcode reading in retail or logistics environments. IC Role / Device Role / Timing Role: High-current flash driver with fast turnon/turnoff to match scanner laser timing and minimize motion blur. Use Value: 10 ns IOUT response ensures consistent illumination timing across varying ambient light conditions and battery voltages. | Use Scenario: Ruggedized portable terminals requiring reliable flash notification and status indication in industrial settings. IC Role / Device Role / Timing Role: Regulated 5-V power source with integrated flash control for LED indicators and camera-assisted data capture. Use Value: Withstands wide input range (3 V–5.5 V) and thermal stress-supports operation across depleted Li-ion cells and elevated ambient temperatures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM3644YFFR | Two-channel, I²C-programmable flash/torch driver; higher integration but requires serial interface and external MOSFETs for >2 A | Supports dual-flash configurations and dynamic current scaling; not pin-compatible | Choose for systems needing programmable current profiles and multi-LED control via host processor |
| TPS61310DRCR | Boost converter with 1.5-A switch; inductor-based, wider VIN (2.5 V–5.5 V), no integrated flash logic | Requires external PWM control and current-sense resistors; better suited for general 5-V rail generation than flash-specific timing | Choose when board space allows inductors and design requires higher continuous current (>200 mA) with tighter output tolerance |
Compared with LM2753SDX/NOPB, LM3644YFFR adds digital configurability at the cost of interface complexity and footprint, while TPS61310DRCR offers higher output current and broader input range but lacks native flash timing control and requires more external components.
Availability
LM2753SDX/NOPB is available at Aetrix Electronics and suitable for cell-phone camera flash, barcode scanner illumination, and handheld data terminal lighting requiring stable component supply, long-lifecycle support, and automotive-grade reliability screening.
Supply support for LM2753SDX/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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LM2753SDX/NOPB belongs to TI's high-efficiency LED driver product line, designed specifically for space-constrained, battery-powered imaging systems requiring fast, reliable flash illumination with minimal external components.
FAQ
What is the maximum pulsed flash current supported by the LM2753SDX/NOPB?
The LM2753SDX/NOPB supports up to 400 mA pulsed flash current for durations up to 500 ms. This rating is specified at V(FLASH) = 1.8 V and VIOUT-MAX = 4.1 V (typical), and is enabled by the device's internal FET and charge-pump architecture. The LM2753SDX/NOPB does not include current limiting-external ballast resistors must be selected to ensure LED forward voltage remains within droop-limited output capability.
How does the LM2753SDX/NOPB regulate its 5-V output without an inductor?
The LM2753SDX/NOPB uses a switched-capacitor doubler topology with pulse-frequency modulation (PFM) to generate and regulate its 5-V output. It charges a flying capacitor (C1) from VIN, then transfers that charge to the output capacitor (COUT) in a voltage-doubling configuration. Regulation is maintained by varying the switching frequency based on output load-higher frequency under heavy load, idle state under light load-achieving 5 V ±5% accuracy without magnetic components.
Can the LM2753SDX/NOPB drive both torch and flash modes simultaneously?
No-the LM2753SDX/NOPB does not support simultaneous torch and flash operation. Torch mode uses continuous current through VOUT to the LED, while flash mode routes pulsed current through IOUT using the internal FET. Driving both paths concurrently would cause uncontrolled current division and potential overvoltage on the LED. The recommended implementation uses separate resistors (RTORCH between VOUT–IOUT, RFLASH between IOUT–LED) and logic sequencing to avoid concurrent activation.
What is the purpose of the three GND pins on the LM2753SDX/NOPB WSON package?
LM2753SDX/NOPB allocates pins 5, 7, and 10 exclusively to GND, plus an exposed die-attach pad also connected to GND. This multi-pin grounding strategy minimizes ground loop impedance, reduces voltage spikes during high di/dt flash pulses, and improves thermal conduction from the die to the PCB. In practice, all four GND connections must be tied to a solid, low-impedance ground plane to meet specified 52.5°C/W junction-to-ambient thermal resistance.
Does the LM2753SDX/NOPB require external compensation components?
No-the LM2753SDX/NOPB is internally compensated and requires no external compensation components. Its PFM control loop and multi-level switch array are factory-tuned for stability with the specified external capacitors: 1 µF flying capacitor (C1), and 10 µF input/output ceramics (CIN, COUT). Using non-ceramic or high-ESR capacitors may degrade regulation or cause oscillation, but no resistor-capacitor network or feedback divider is needed.
LM2753SDX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Switched Capacitor (Charge Pump)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 3V
- Voltage - Supply (Max):
- 5.5V
- Voltage - Output:
- 4.75V ~ 5.25V
- Current - Output / Channel:
- 400mA (Flash)
- Frequency:
- 725kHz
- Dimming:
- PWM
- Applications:
- Camera Flash
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-SON (3x3)
LM2753SDX/NOPB FAQ
1.How can I place an order for LM2753SDX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2753SDX/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 LM2753SDX/NOPB reliable?
The price and inventory of LM2753SDX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2753SDX/NOPB is usually 5 days.
3.What payment methods are accepted for LM2753SDX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2753SDX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2753SDX/NOPB?
LM2753SDX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2753SDX/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 LM2753SDX/NOPB?
For technical support, including LM2753SDX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2753SDX/NOPB requirements.
6.How does Aetrix verify that LM2753SDX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2753SDX/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 LM2753SDX/NOPB meets industry standards.
7.What is the process for return or replacement of LM2753SDX/NOPB?
All LM2753SDX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2753SDX/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 LM2753SDX/NOPB part is unused and in its original packaging.
Return procedure for LM2753SDX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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