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Texas Instruments LM2753SD/NOPB
- Part No.:
- LM2753SD/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM2753SD/NOPB.pdf
- Description:
- IC LED DRV RGLTR PWM 400MA 10SON
- Quantity:
- Payment:
- Shipping:
Inventory:1,027
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Product details
Overview
LM2753SD/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, supports 200-mA continuous load current and 400-mA pulsed flash current (≤500 ms), and features <10-ns flash turnon time for camera strobe applications in mobile devices.
For engineers reviewing the LM2753SD/NOPB datasheet, LM2753SD/NOPB pinout, LM2753SD/NOPB application, or LM2753SD/NOPB equivalent, key selection criteria include PFM regulation efficiency, dual-mode (torch/flash) LED drive capability, 10-pin WSON package thermal performance, and compatibility with low-ESR ceramic capacitor networks.
Technical Context
The LM2753SD/NOPB implements a multi-level switch array charge pump with pulse-frequency modulation (PFM) to maintain tight 5-V regulation across varying input voltage (3 V–5.5 V) and load conditions. Its architecture dynamically adjusts switch count based on VIN to balance ripple suppression at high input and current delivery at low input.
It integrates two independent control paths: an enable-controlled 5-V regulated supply (VOUT) and a FLASH-gated internal FET connecting VOUT to IOUT with 10-ns turnon. Torch mode current is set via external resistor between VOUT and IOUT; flash current is set by ballast resistor between IOUT and LED anode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3 V to 5.5 V - supports full Li-ion battery discharge range without external LDO pre-regulation. |
| Regulated Output Voltage | 5 V ±5% - stable rail for white LED flash drivers and auxiliary 5-V logic loads. |
| Continuous Output Current | 200 mA - sufficient for sustained torch illumination or powering small peripherals. |
| Pulsed Flash Current | 400 mA for ≤500 ms - enables high-intensity camera flash without thermal shutdown. |
| Quiescent Current | 60 µA typical - minimizes standby power draw in always-on mobile camera modules. |
| Shutdown Current | 0.1 µA - ensures near-zero battery drain when disabled via EN pin. |
| Switching Frequency | 725 kHz typical - enables use of compact 1-µF flying capacitor and 10-µF input/output ceramics. |
Pinout & Package
LM2753SD/NOPB uses a 10-pin WSON package (3.0 mm × 3.0 mm × 0.8 mm) with exposed die-attach pad connected to GND for thermal dissipation. The package is RoHS-compliant and lead-free (NOPB suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 C1+ | Flying capacitor positive terminal | Connects to + side of 1-µF ceramic flying capacitor; critical node for charge transfer timing and efficiency. |
| 2 VIN | Main power input | Accepts 3 V–5.5 V unregulated supply; powers internal regulators and charge pump switches. |
| 3 C1− | Flying capacitor negative terminal | Connects to − side of flying capacitor; forms doubler stage with C1+ and internal switch array. |
| 4 FLASH | Flash mode control input | Active-HIGH logic input (1.2 V–VIN); enables internal VOUT-to-IOUT FET with <10 ns turnon for strobe timing. |
| 5 GND | Ground reference | Primary ground return for analog and power circuits; connects to exposed thermal pad. |
| 6 EN | Enable control input | Active-HIGH logic input (1.2 V–VIN); places device in shutdown (<0.1 µA IQ) when LOW. |
| 7 GND | Ground reference | Secondary ground connection; improves noise immunity and current return path separation. |
| 8 IOUT | Flash output terminal | Switched output sourced from VOUT via internal FET; drives LED cathode through ballast resistor. |
| 9 VOUT | Regulated 5-V output | Stable 5-V rail for torch mode LED drive and auxiliary loads; supplies IOUT when FLASH = HIGH. |
| 10 GND | Ground reference | Third ground terminal; enhances thermal conduction and reduces ground bounce in high-pulse-current operation. |
Key Features
| Feature | Design Value |
|---|---|
| Inductor-less architecture | Uses only three low-cost MLCCs (CIN, COUT, C1) - eliminates EMI, size, and cost penalties of magnetic components. |
| Multi-level switch array | Dynamically configures internal MOSFETs based on VIN - optimizes ripple at high input and current delivery at low input. |
| Sub-10 ns flash turnon | Enables precise synchronization with image sensor exposure timing in smartphone cameras. |
| Integrated thermal protection | Shuts down at ~140°C junction temperature and recovers at ~125°C - prevents permanent damage during overloads. |
| Soft-start ramp | VOUT rises from 0 V to 5 V in 640 µs - avoids inrush current and system voltage sag during power-up. |
Applications
| Cell-Phone Camera Flash | Digital Still Camera Strobe |
|---|---|
Use Scenario: High-intensity, short-duration illumination synchronized with CMOS image sensor exposure in smartphones. IC Role / Device Role / Timing Role: Flash LED driver delivering 400-mA pulsed current with <10 ns turnon to match sensor shutter timing. Use Value: Enables consistent flash brightness across battery voltage range (3.0 V–4.2 V) without external DC-DC conversion. |
Use Scenario: Bright, repeatable strobe lighting for DSLR/mirrorless camera autofocus assist and flash triggering. IC Role / Device Role / Timing Role: Regulated 5-V source and fast-switching current driver supporting multiple flash profiles (single burst, sequence, red-eye reduction). Use Value: Eliminates need for bulky inductor-based boost converters while maintaining <500-ms flash duration compliance. |
| Emergency Strobe Lighting | Barcode Scanner Illumination |
Use Scenario: High-visibility warning strobes in fire alarms, exit signs, and industrial hazard indicators. IC Role / Device Role / Timing Role: High-reliability 5-V regulated supply with pulsed current capability driving multiple parallel LEDs. Use Value: Delivers 400-mA peak current pulses at low duty cycle with <1 µA shutdown current - extends battery life in backup systems. |
Use Scenario: Short-burst LED illumination for rapid barcode reading in handheld scanners and kiosks. IC Role / Device Role / Timing Role: Fast-enable torch/flash driver supporting PWM brightness control via EN or FLASH pin. Use Value: Achieves sub-millisecond LED activation with minimal latency - critical for high-speed scanning throughput. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar flash LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS68470RWER | Higher integration: includes I²C interface, programmable current, and thermal foldback; requires external inductor. | Supports dynamic current adjustment and fault reporting - suited for smart camera modules requiring host control. | Choose TPS68470RWER when digital configurability and diagnostics outweigh inductor size/cost constraints. |
| MAX8630YETA+ | Lower max flash current (350 mA); fixed 5-V output; no torch mode resistor programming - simpler BOM but less flexible. | Targeted at cost-sensitive single-function flash applications where 400-mA peak is not required. | Choose MAX8630YETA+ for legacy designs prioritizing footprint and qualification continuity over peak performance. |
Compared with TPS68470RWER and MAX8630YETA+, LM2753SD/NOPB offers the highest pulsed current (400 mA) in an inductor-less solution with direct torch/flash resistor programming - ideal for space-constrained, high-brightness mobile camera systems where analog simplicity and thermal robustness are critical.
Availability
LM2753SD/NOPB is available at Aetrix Electronics and suitable for cell-phone camera flash, emergency strobe lighting, and barcode scanner illumination requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LM2753SD/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 company specializing in analog, embedded processing, and power management technologies, with leadership in precision analog and high-reliability power solutions.
The LM2753SD/NOPB belongs to TI's high-efficiency LED driver product line, designed specifically for portable imaging systems requiring compact, inductor-free flash and torch illumination with precise timing and thermal resilience.
FAQ
What is the maximum pulsed flash current supported by the LM2753SD/NOPB?
The LM2753SD/NOPB supports up to 400 mA of pulsed flash current for durations up to 500 ms, as verified in electrical characteristics testing under V(FLASH) = 1.8 V and VIOUT-MAX = 4.1 V (typical). This rating assumes proper thermal layout and use of recommended low-ESR ceramic capacitors. Exceeding 500 ms may trigger thermal shutdown due to accumulated power dissipation.
How does the LM2753SD/NOPB achieve regulation without an inductor?
The LM2753SD/NOPB uses a switched-capacitor doubler architecture with pulse-frequency modulation (PFM) and a multi-level switch array. It charges a flying capacitor (C1) from VIN, then transfers charge to the output capacitor (COUT) in discrete bursts - eliminating magnetic components while maintaining 5-V regulation across 3 V–5.5 V input. Regulation is achieved by varying the frequency of these charge-transfer cycles based on output load.
Can the LM2753SD/NOPB drive both torch and flash modes simultaneously?
No - the LM2753SD/NOPB operates in mutually exclusive torch or flash mode. Torch mode is active when FLASH = LOW and EN = HIGH, routing current through the VOUT→IOUT resistor network. Flash mode activates when FLASH = HIGH (with EN = HIGH), shorting that resistor and delivering full pulsed current directly from VOUT to IOUT. Simultaneous operation is electrically prohibited by the internal FET configuration.
What is the purpose of the three ground pins (Pins 5, 7, and 10) on the LM2753SD/NOPB?
The three GND pins on the LM2753SD/NOPB serve distinct functions: Pin 5 is the primary analog/power ground reference; Pin 7 provides a dedicated return path for switching currents to reduce noise coupling; Pin 10 connects directly to the exposed thermal pad for enhanced heat dissipation. Together, they lower overall impedance, improve EMI performance, and maintain thermal stability during 400-mA flash pulses.
Does the LM2753SD/NOPB require external compensation components?
No - the LM2753SD/NOPB is internally compensated and requires no external compensation network. Its PFM control loop and multi-level switch array are factory-tuned for stability with the specified 1-µF flying capacitor (C1) and 10-µF input/output ceramics (CIN, COUT). Deviating from these values - especially using high-ESR or voltage-coefficient capacitors (e.g., Y5V, Z5U) - may cause regulation instability or excessive ripple.
LM2753SD/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)
LM2753SD/NOPB FAQ
1.How can I place an order for LM2753SD/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2753SD/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 LM2753SD/NOPB reliable?
The price and inventory of LM2753SD/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2753SD/NOPB is usually 5 days.
3.What payment methods are accepted for LM2753SD/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2753SD/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2753SD/NOPB?
LM2753SD/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2753SD/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 LM2753SD/NOPB?
For technical support, including LM2753SD/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2753SD/NOPB requirements.
6.How does Aetrix verify that LM2753SD/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2753SD/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 LM2753SD/NOPB meets industry standards.
7.What is the process for return or replacement of LM2753SD/NOPB?
All LM2753SD/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2753SD/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 LM2753SD/NOPB part is unused and in its original packaging.
Return procedure for LM2753SD/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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