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Texas Instruments LM2735XMY/NOPB
- Part No.:
- LM2735XMY/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerTSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM2735XMY/NOPB.pdf
- Description:
- IC REG BOOST FLYBACK ADJ 8HVSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,784
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Product details
Overview
LM2735XMY/NOPB from Texas Instruments is a 1.6-MHz, 2.1-A low-side switch boost/SEPIC DC/DC regulator in a 6-pin WSON package, operating from 2.7 V to 5.5 V input and delivering up to 24 V output with ±2% feedback voltage accuracy, 170-mΩ NMOS switch RDS(ON), and 80 nA shutdown current - used in portable LCD backlighting and USB-powered devices.
For engineers reviewing the LM2735XMY/NOPB datasheet, LM2735XMY/NOPB pinout, LM2735XMY/NOPB application, or LM2735XMY/NOPB equivalent, key selection criteria include switching frequency (1.6 MHz), peak switch current (2.1 A), feedback reference (1.255 V), thermal shutdown threshold (160°C), and WSON-6 package compatibility with space-constrained portable power designs.
Technical Context
The LM2735XMY/NOPB implements constant-frequency peak current-mode control with internal compensation, enabling stable regulation across wide input/output ranges without external loop components. Its 1.6-MHz oscillator allows use of sub-2-mm SMD inductors and chip capacitors while maintaining >90% efficiency at 350 mA output.
It integrates soft-start (4 ms ramp), pulse-by-pulse current limiting (2.1 A min), undervoltage lockout (2.3 V rising), and logic-high enable with 100 nA input bias - all optimized for single-cell Li-ion or USB-powered systems requiring fast transient response and minimal BOM count.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.6 MHz - enables use of ≤2.2-µH inductors and reduces PCB area by >40% vs 520-kHz variants |
| Peak Switch Current | 2.1 A - supports ≥350 mA output at 12 V with margin for startup transients |
| Feedback Voltage | 1.255 V ±2% - sets output via resistor divider; enables precise 3–24 V programming |
| RDS(ON) | 170 mΩ - limits conduction loss to <120 mW at 1 A, improving thermal performance in WSON |
| Shutdown Current | 80 nA - extends battery life in always-on portable systems during standby |
| UVLO Threshold | 2.3 V (rising) - prevents erratic operation during Li-ion discharge below 3.0 V |
| Thermal Shutdown | 160°C - protects against sustained overload or poor heatsinking in sealed enclosures |
Pinout & Package
LM2735XMY/NOPB uses a 3.00 mm × 3.00 mm, 6-pin WSON (NGG) package with exposed thermal pad (DAP) connected to PGND. The package supports high-power density layouts with 4–6 vias from DAP to internal ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Supplies internal regulator and power stage; must be decoupled within 3 mm of pin with ≥10 µF ceramic capacitor |
| SW | Switch node | Connects to inductor and catch diode anode; requires short, low-inductance trace to minimize EMI and ringing |
| PGND | Power ground | Return path for switch current; must tie directly to DAP and output capacitor cathode |
| FB | Feedback input | Senses output voltage via resistor divider; place bottom resistor within 1 mm of AGND and PGND |
| EN | Enable control | Logic-high active; drive from microcontroller GPIO; clamp with Zener if VIN > 5.5 V |
| AGND | Analog ground | Reference for error amplifier; connect to PGND at single point near FB resistor network |
Key Features
| Feature | Design Value |
|---|---|
| Internal soft start | 4-ms output ramp - eliminates inrush current into large output capacitors (e.g., 10 µF X5R) |
| Current-mode control | No external compensation required - simplifies design for 3–24 V outputs across 2.7–5.5 V input range |
| 170-mΩ NMOS switch | Reduces conduction loss by 25% vs comparable 200-mΩ regulators at 1 A load |
| Ultra-low shutdown current | 80 nA - enables >1-year shelf life in battery-backed IoT sensors |
| Two fixed frequencies | 1.6 MHz option avoids AM radio band (530–1710 kHz) and eases EMI filtering |
Applications
| LCD Display Backlighting | OLED Panel Power Supply |
|---|---|
Use Scenario: Driving white LED strings in handheld medical monitors powered by single-cell Li-ion (3.0–4.2 V). IC Role / Device Role / Timing Role: Boost regulator generating 12–18 V from 3.6 V nominal input, regulating LED current via external sense resistor. Use Value: 1.6-MHz operation allows 1.5-µH inductor and 10-µF output cap - reducing solution size by 35% vs 520-kHz alternatives. | Use Scenario: Providing programmable 8–15 V bias for OLED pixel drivers in smart wearables with tight height constraints. IC Role / Device Role / Timing Role: SEPIC converter maintaining regulated output during battery voltage sag below LED forward voltage. Use Value: Internal 2.1-A switch handles 400-mA peak loads without external MOSFET; WSON-6 footprint fits under display bezel. |
| USB-Powered Devices | Digital Still Cameras |
Use Scenario: Generating 5 V or 9 V from USB 2.0 (5 V ±5%) for portable audio DACs or sensor hubs. IC Role / Device Role / Timing Role: Boost regulator with EN pin synchronized to host USB enumeration to minimize standby drain. Use Value: 80-nA shutdown current ensures <1 µA system leakage when USB VBUS is removed. | Use Scenario: Powering CCD/CMOS image sensor bias rails and flash LED drivers in compact point-and-shoot cameras. IC Role / Device Role / Timing Role: Dual-output supply generator using two LM2735XMY/NOPB ICs - one for 3.3 V analog, one for 12 V flash. Use Value: 170-mΩ RDS(ON) sustains >90% efficiency at 200 mA, minimizing thermal rise in plastic camera housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost/SEPIC regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM2735YMF/NOPB | 520-kHz switching frequency; higher quiescent current (3.4 mA vs 7 mA); same pinout and feedback accuracy | Better light-load efficiency in low-noise audio supplies; larger inductors required | Select when EMI sensitivity outweighs board area constraints |
| TPS61040DRVR | Fixed 500-kHz frequency; 1.1-A switch current; no internal soft-start; requires external compensation | Limited to ≤15 V output; lower cost but higher design effort for stable 24 V operation | Select for cost-sensitive, non-critical 5–12 V applications with relaxed transient requirements |
Compared with LM2735YMF/NOPB, LM2735XMY/NOPB trades higher light-load quiescent current for 3× faster switching, enabling smaller passives and tighter EMI control; versus TPS61040DRVR, it offers higher current capability, integrated soft-start, and simpler layout at modest cost premium.
Availability
LM2735XMY/NOPB is available at Aetrix Electronics and suitable for portable medical displays, USB-C peripheral power, and digital camera modules requiring stable component supply with full production traceability and TI-authorized sourcing.
Supply support for LM2735XMY/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 over 50 years of innovation in high-reliability power conversion solutions.
The LM2735 product line delivers space-efficient, easy-to-use boost/SEPIC regulators targeting portable electronics where small size, low standby power, and rapid time-to-market are critical design goals.
FAQ
What is the maximum output voltage supported by LM2735XMY/NOPB?
The LM2735XMY/NOPB supports output voltages from 3 V to 24 V, set by an external resistor divider on the FB pin. Its 26.5-V absolute maximum SW pin rating and internal 2.1-A switch enable reliable 24-V operation with appropriate external diode and capacitor ratings.
Does LM2735XMY/NOPB require external compensation components?
No, LM2735XMY/NOPB features internal compensation optimized for current-mode control. No external compensation network is needed for stable operation across its full 3–24 V output range, significantly reducing BOM count and layout complexity compared to voltage-mode regulators.
What package type is used for LM2735XMY/NOPB?
LM2735XMY/NOPB uses the NGG package: a 3.00 mm × 3.00 mm, 6-pin WSON with exposed thermal pad (DAP). This package provides superior thermal performance over SOT-23 and enables high-density routing in portable PCBs.
How does the enable (EN) pin function on LM2735XMY/NOPB?
The EN pin on LM2735XMY/NOPB is logic-high active. Applying ≥1.8 V enables regulation; ≤0.4 V places the device in shutdown mode with 80 nA quiescent current. The pin must never exceed VIN + 0.3 V and should not be left floating.
Can LM2735XMY/NOPB operate in SEPIC topology?
Yes, LM2735XMY/NOPB supports both boost and SEPIC configurations. Its low-side NMOS switch and integrated current sensing allow direct implementation of SEPIC with proper transformer coupling and capacitor selection, enabling regulation even when input voltage exceeds output.
LM2735XMY/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-PowerTSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Boost, Flyback, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- 24V
- Current - Output:
- 2.1A (Switch)
- Frequency - Switching:
- 1.6MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
LM2735XMY/NOPB FAQ
1.How can I place an order for LM2735XMY/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2735XMY/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 LM2735XMY/NOPB reliable?
The price and inventory of LM2735XMY/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2735XMY/NOPB is usually 5 days.
3.What payment methods are accepted for LM2735XMY/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2735XMY/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2735XMY/NOPB?
LM2735XMY/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2735XMY/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 LM2735XMY/NOPB?
For technical support, including LM2735XMY/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2735XMY/NOPB requirements.
6.How does Aetrix verify that LM2735XMY/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2735XMY/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 LM2735XMY/NOPB meets industry standards.
7.What is the process for return or replacement of LM2735XMY/NOPB?
All LM2735XMY/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2735XMY/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 LM2735XMY/NOPB part is unused and in its original packaging.
Return procedure for LM2735XMY/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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