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Texas Instruments LM4510SDX/NOPB
- Part No.:
- LM4510SDX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LM4510SDX/NOPB.pdf
- Description:
- IC REG BOOST ADJ 1A 10SON
- Quantity:
- Payment:
- Shipping:
Inventory:3,909
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Product details
Overview
LM4510SDX/NOPB from Texas Instruments is a synchronous step-up DC/DC converter with 1.2-A NMOS and integrated PMOS switches, delivering up to 120 mA at 16 V from 2.7–5.5 V input. It features true shutdown isolation (0.002 µA shutdown current), 1-MHz fixed-frequency operation, and soft-start control via external capacitor. Used in white LED backlight and USB power supply circuits where compact high-voltage boost is required.
For engineers reviewing the LM4510SDX/NOPB datasheet, LM4510SDX/NOPB pinout, LM4510SDX/NOPB application, or LM4510SDX/NOPB equivalent, key selection criteria include input voltage range (2.7–5.5 V), output capability (16 V @ 120 mA), synchronous rectification architecture, thermal shutdown (150°C), and WSON-10 package compatibility with space-constrained portable designs.
Technical Context
The LM4510SDX/NOPB employs peak current-mode PWM control with automatic transition between synchronous and non-synchronous operation-synchronous above ~10 mA load or >10 V output, non-synchronous at light loads to reduce PMOS gate drive loss. Its internal 1.2-A NMOS switch and complementary PMOS enable efficient boost conversion without external Schottky diode.
It integrates feedback fault protection (shuts down if FB node shorts to GND or open-circuits), input undervoltage lockout (2.35 V turn-off, 2.5 V turn-on), and short-circuit protection that disables switching when VOUT drops to VIN – 0.7 V. Compensation is implemented externally via COMP pin with RC/CC1 network for loop stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion, NiMH, or regulated 3.3 V/5 V rails without external LDO pre-regulation. |
| Output Voltage | Adjustable up to 18 V - set by external resistor divider on FB pin; typical 16 V design delivers 120 mA with 85% peak efficiency. |
| Switching Frequency | 1 MHz (±15%) - enables use of small 4.7 µH inductors and ceramic capacitors; frequency stable over temperature and input voltage. |
| NMOS RDS(on) | 0.45 Ω (typ.) - limits conduction loss at 300 mA peak switch current; critical for thermal performance in high-duty-cycle boost applications. |
| Shutdown Current | 0.002 µA - ensures near-zero battery drain during system sleep; true isolation disconnects FB resistors and load from input. |
| Soft-Start Control | External capacitor on SS pin - linearly ramps COMP voltage to limit inrush current; prevents input rail collapse during startup. |
| Thermal Shutdown | 150°C (typ.) - protects die under overload or poor PCB thermal layout; auto-recovery at ~140°C ensures robust fault recovery. |
Pinout & Package
LM4510SDX/NOPB uses a 3 mm × 3 mm × 0.8 mm WSON-10 package with exposed thermal pad (DAP) connected to PGND. The package supports high-density layout and efficient heat dissipation via bottom-side thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switch node | Drain connection of internal NMOS and PMOS; carries high di/dt switching current; requires tight layout to minimize EMI and voltage spikes. |
| PGND | Power ground | High-current return path for NMOS source and inductor; must be low-impedance plane tied directly to DAP for thermal and noise control. |
| VIN | Input supply | Primary power input (2.7–5.5 V); decoupled with ≥4.7 µF ceramic capacitor placed within 3 mm of pin to suppress input ripple. |
| EN | Enable logic input | Active-high digital control (1.2 V min HIGH, 0.4 V max LOW); internal pull-down ensures default OFF state; compatible with GPIOs. |
| SS | Soft-start capacitor node | Connects to external capacitor (e.g., 15 pF) to set controlled ramp time; initial charge current limited to prevent inrush into output cap. |
| AGND | Analog ground | Reference for FB, COMP, and error amplifier; must be star-connected to PGND at single point to avoid noise coupling into feedback path. |
| COMP | Compensation network | Output of internal error amplifier; requires RC/CC1 network (e.g., 46.4 kΩ + 2.2 nF) to stabilize voltage loop across operating conditions. |
| FB | Feedback input | Monitors output via resistor divider; 1.265 V reference sets VOUT = 1.265 × (1 + RF1/RF2); fault protection triggers if FB < 17 V or >20 V. |
| N/C | No internal connection | Unbonded pin; must remain unconnected and unpopulated on PCB to avoid parasitic coupling or mechanical stress. |
| VOUT | Synchronous rectifier source | PMOS source terminal; provides low-loss return path during discharge cycle; connects directly to output capacitor positive terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode - reduces forward drop loss and improves efficiency by 5–10% vs. asynchronous boost at medium-to-heavy loads. |
| True shutdown isolation | 0.002 µA quiescent current with complete disconnection of FB divider and load from VIN - essential for battery-powered devices requiring multi-week shelf life. |
| Feedback fault protection | Detects open or shorted FB network - shuts down output before VOUT runaway; resumes regulation only after FB returns to valid range (17–20 V). |
| Non-synchronous light-load mode | Automatically disables PMOS gate drive below ~10 mA - avoids reverse conduction loss and maintains >80% efficiency even at 1 mA output. |
| 1-MHz fixed-frequency PWM | Enables consistent EMI filtering and predictable inductor sizing - supports 4.7 µH coil with <10% ripple and minimal board area. |
Applications
| Organic LED Panel Power Supply | White LED Backlight |
|---|---|
Use Scenario: Driving OLED display panels requiring stable 12–16 V bias from single-cell lithium battery. IC Role / Device Role / Timing Role: Primary boost regulator providing regulated high-voltage rail with fast transient response to pixel refresh demands. Use Value: Synchronous operation sustains >82% efficiency at 80 mA load; true shutdown prevents battery drain during display off-state. |
Use Scenario: Powering parallel strings of white LEDs in handheld medical or industrial displays. IC Role / Device Role / Timing Role: Constant-voltage boost source feeding LED driver ICs or current sources; operates at fixed 1 MHz for predictable EMI profile. Use Value: 16 V output capability supports 3–4 white LEDs in series; soft-start prevents flash-on-power-up and inrush-induced voltage sag. |
| USB Power Supply | Camera Flash LED Driver |
Use Scenario: Generating 5 V from 3.6 V battery for USB peripheral charging or data interface power. IC Role / Device Role / Timing Role: Step-up converter supplying regulated 5 V to USB VBUS or PHY circuitry; EN pin synchronized to system power sequencing. Use Value: Delivers 280 mA at 5 V from 3.2 V input; input UVLO prevents brownout during battery depletion; compact WSON-10 fits USB-C dongle PCBs. |
Use Scenario: Providing high-current pulse voltage (≥16 V) to xenon or high-brightness LED flash circuits in mobile cameras. IC Role / Device Role / Timing Role: High-voltage charge pump alternative - delivers burst-capable 16 V output with fast line/load regulation for flash timing accuracy. Use Value: Short-circuit protection limits fault energy during flash trigger; thermal shutdown prevents damage during repeated burst operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher output current (up to 4 A), wider input (2.7–12 V), but larger QFN-20 package and no true shutdown isolation. | Better suited for high-power USB PD or motor drive; lacks 0.002 µA shutdown - unsuitable for ultra-low-power standby. | Select TPS61088RHLR when >500 mA output or >12 V input is required; avoid if battery shelf life or true isolation are critical. |
| MAX77818EWJ+T | Integrated battery charger + boost; 1.2-MHz switching; but fixed 5 V/9 V/12 V outputs and no adjustable FB divider. | Targets power-management IC (PMIC) integration in smartphones; not configurable for arbitrary 16 V outputs. | Select MAX77818EWJ+T only in systems needing combined charging + boost; LM4510SDX/NOPB remains preferred for standalone 16 V LED/OLED bias. |
Compared with TPS61088RHLR and MAX77818EWJ+T, LM4510SDX/NOPB uniquely balances ultra-low shutdown current, adjustable 16 V output, and WSON-10 footprint - making it optimal for space- and battery-life-constrained portable displays and flash systems.
Availability
LM4510SDX/NOPB is available at Aetrix Electronics and suitable for organic LED panel power supplies, white LED backlights, and USB power supply designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LM4510SDX/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 ICs, with decades of expertise in high-efficiency DC/DC conversion and portable power solutions.
The LM4510SDX/NOPB belongs to TI's precision boost converter product line, designed specifically for space-constrained, battery-powered applications demanding high-voltage bias generation with minimal quiescent current and robust fault protection.
FAQ
What is the maximum output voltage supported by the LM4510SDX/NOPB?
The LM4510SDX/NOPB supports an absolute maximum output voltage of 21 V per absolute ratings, with recommended operation up to 18 V. In typical applications, it delivers stable 16 V output with 120 mA load. The FB pin reference is 1.265 V, so VOUT = 1.265 × (1 + RF1/RF2); selecting RF1 = 240 kΩ and RF2 = 20.5 kΩ yields precisely 16 V. Exceeding 18 V risks triggering feedback fault protection or violating safe operating area limits.
Does the LM4510SDX/NOPB require an external Schottky diode?
No, the LM4510SDX/NOPB does not require an external Schottky diode. It integrates both an internal 1.2-A NMOS switch and a complementary PMOS synchronous rectifier, enabling full synchronous boost operation. This eliminates forward voltage drop and associated power loss, improving peak efficiency to 85% and simplifying bill-of-materials. The device automatically switches to non-synchronous mode at light loads to further optimize efficiency.
How does the feedback fault protection work on the LM4510SDX/NOPB?
The LM4510SDX/NOPB monitors the FB pin voltage continuously. If FB falls below 17 V or rises above 20 V - indicating an open feedback resistor, shorted FB-to-GND, or incorrect divider ratio - the device enters shutdown mode and halts switching. Output voltage drops to zero, and the part remains latched off until FB returns to the valid 17–20 V window. This prevents uncontrolled VOUT rise or collapse, protecting downstream components in safety-critical lighting and display applications.
What is the purpose of the N/C pin on the LM4510SDX/NOPB WSON package?
Pin 9 of the LM4510SDX/NOPB is labeled N/C (No Connection) and has no internal bond wire or circuit connection. It must remain unconnected on the PCB - neither routed nor soldered - to avoid mechanical stress on the die, parasitic capacitance affecting SW node ringing, or unintended current paths. TI specifies this pin as unused in all electrical, thermal, and mechanical documentation for the LM4510SDX/NOPB.
Can the LM4510SDX/NOPB operate from a 2.7 V input to deliver 16 V at 120 mA?
Yes, the LM4510SDX/NOPB is rated for 2.7 V minimum input and can deliver 16 V at 120 mA under those conditions, though efficiency drops to ~70% (per Figure 3 in SNVS533D). At 2.7 V input, peak switch current approaches the 1.2-A limit, so thermal design and PCB copper area must be optimized. TI recommends avoiding simultaneous minimum VIN and maximum IOUT to prevent thermal shutdown; derating to ≤100 mA at 2.7 V ensures reliable operation across −40°C to 125°C junction temperature.
LM4510SDX/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:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.7V
- Voltage - Output (Max):
- 18V
- Current - Output:
- 1A (Switch)
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-SON (3x3)
LM4510SDX/NOPB FAQ
1.How can I place an order for LM4510SDX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM4510SDX/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 LM4510SDX/NOPB reliable?
The price and inventory of LM4510SDX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM4510SDX/NOPB is usually 5 days.
3.What payment methods are accepted for LM4510SDX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM4510SDX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM4510SDX/NOPB?
LM4510SDX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM4510SDX/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 LM4510SDX/NOPB?
For technical support, including LM4510SDX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM4510SDX/NOPB requirements.
6.How does Aetrix verify that LM4510SDX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM4510SDX/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 LM4510SDX/NOPB meets industry standards.
7.What is the process for return or replacement of LM4510SDX/NOPB?
All LM4510SDX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM4510SDX/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 LM4510SDX/NOPB part is unused and in its original packaging.
Return procedure for LM4510SDX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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