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Texas Instruments LM27313XQMF/NOPB
- Part No.:
- LM27313XQMF/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM27313XQMF/NOPB.pdf
- Description:
- IC REG BOOST ADJ 800MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,623
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Product details
Overview
LM27313XQMF/NOPB from Texas Instruments is a current-mode boost DC-DC converter IC with 1.6-MHz fixed switching frequency, 30-V internal DMOS FET switch, and 800-mA peak switch current capability. It operates from 2.7 V to 14 V input and delivers up to 260 mA typical output current at 12 V in compact SOT-23-5 packaging-ideal for space-constrained portable power rails.
For engineers reviewing the LM27313XQMF/NOPB datasheet, LM27313XQMF/NOPB pinout, LM27313XQMF/NOPB application, or LM27313XQMF/NOPB equivalent, key selection considerations include its internally compensated architecture, logic-level shutdown (≤1 µA shutdown current), cycle-by-cycle current limiting, 1.23-V feedback reference voltage, and thermal shutdown protection-critical for battery-powered PDA, GPS, and media player designs.
Technical Context
The LM27313XQMF/NOPB implements peak-current-mode control using an internal ramp generator and PWM comparator, enabling fast transient response across its 2.7–14 V input range. Its 50-mΩ sense path monitors FET current directly for pulse-by-pulse limiting independent of the regulation loop.
Feedback is derived from a precision 1.23-V bandgap reference applied to the FB pin via external resistive divider; output voltage is set by R1/R2 ratio per VOUT = VFB × (1 + R1/R2). Internal compensation eliminates need for external compensation components, while SHDN pin enables logic-level enable/disable with <1 µA quiescent draw in shutdown mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.6 MHz (enables use of ≤10 µH inductors and ≤4.7 µF ceramic capacitors for ultra-compact layout) |
| Input Voltage Range | 2.7 V to 14 V (supports single-cell Li-ion, multi-cell alkaline, and 12-V automotive accessory rails) |
| Internal Switch Rating | 30-V DMOS FET with 500 mΩ RDS(ON) (supports boost outputs up to 28 V without external switch) |
| Peak Switch Current | 800 mA (limits inductor size and enables ≥260 mA at 12 V with >88% efficiency) |
| Feedback Reference | 1.230 V ±25 mV (sets output accuracy; line regulation ≤0.02%/V ensures stable VOUT across VIN range) |
| Shutdown Current | <1 µA (extends battery life in standby; SHDN pin active-low with 0.5 V threshold) |
| Thermal Protection | Integrated thermal shutdown (prevents damage during overload or poor PCB heatsinking) |
Pinout & Package
LM27313XQMF/NOPB is housed in a 5-pin SOT-23 package (2.90 mm × 1.60 mm body size) with exposed pad for thermal enhancement. Pin 1 is SW (switch node), Pin 2 is GND (common analog/power ground), Pin 3 is FB (feedback input), Pin 4 is SHDN (active-low enable), and Pin 5 is VIN (input supply).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | Switch Drain Node | Connects to inductor and Schottky diode anode; carries high-frequency pulsed current up to 800 mA |
| GND (Pin 2) | Analog & Power Ground | Single-point return for FB, SHDN, and internal circuitry; requires low-impedance PCB connection to minimize noise |
| FB (Pin 3) | Voltage Feedback Input | Monitors output via resistive divider; regulates VOUT to 1.23 V at this pin regardless of load or input variation |
| SHDN (Pin 4) | Logic-Level Enable | Pull low to disable converter (ISHDN < 1 µA); tie to VIN if unused; no external pullup required |
| VIN (Pin 5) | Power Input | Supplies internal bias and switch driver; must be bypassed with ≥2.2 µF X5R/X7R ceramic capacitor near pin |
Key Features
| Feature | Design Value |
|---|---|
| Internally Compensated Loop | Eliminates external compensation network-reduces BOM count and layout sensitivity |
| Cycle-by-Cycle Current Limiting | Terminates each switching cycle if peak current exceeds 800 mA-prevents inductor saturation and thermal runaway |
| Logic-Level Shutdown | Active-low SHDN pin draws <1 µA in shutdown-enables seamless integration into low-power system sleep states |
| High-Frequency Operation | 1.6-MHz switching allows 10 µH inductors and 4.7 µF ceramics-cuts solution footprint by >40% vs. 500-kHz converters |
| 30-V Integrated FET | Supports output voltages up to 28 V without external MOSFET-simplifies design for white LED drivers and sensor bias rails |
Applications
| White LED Backlighting | PDA & Handheld Computing |
|---|---|
Use Scenario: Driving 3–5 white LEDs in series from a single 3.3-V or 5-V Li-ion cell in portable displays. IC Role / Device Role / Timing Role: Boost converter regulating constant current through LED string via FB-controlled output voltage. Use Value: Delivers 260 mA at 12 V with >88% efficiency and minimal ripple-enabling uniform brightness and extended battery runtime. | Use Scenario: Generating 5-V or 12-V auxiliary rail from main 3.3-V system supply in palm-top computers and handheld terminals. IC Role / Device Role / Timing Role: Primary DC-DC boost stage providing stable, low-noise power to USB peripherals or display controllers. Use Value: Compact SOT-23-5 footprint and internal compensation reduce board area by >30% versus discrete solutions. |
| Digital Camera Power | Portable Media Player |
Use Scenario: Supplying 15-V flash capacitor charging rail and 5-V image sensor bias from 3.7-V battery in compact digital cameras. IC Role / Device Role / Timing Role: High-efficiency boost regulator delivering regulated output under dynamic load transients during flash charging. Use Value: 1.6-MHz operation minimizes EMI coupling into sensitive image signal paths-preserving SNR. | Use Scenario: Generating 12-V audio amplifier supply and 5-V USB OTG power from 3.3-V system rail in MP3 players and gaming devices. IC Role / Device Role / Timing Role: Dual-rail boost converter supporting simultaneous high-current audio and data functions. Use Value: Logic-level SHDN enables synchronized power gating-reducing system standby current to sub-µA levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61040DRVR | 500-kHz switching, 28-V FET, 400-mA switch current, requires external compensation | Lower frequency increases inductor/capacitor size; less suitable for ultra-compact layouts | Preferred when lower EMI or higher peak current tolerance is needed over size constraints |
| MAX17062ETA+ | 1.2-MHz switching, 20-V FET, 600-mA switch current, integrated soft-start | Limited max output voltage (≤18 V); lacks AEC-Q100 qualification | Selected for cost-sensitive consumer designs where 12-V output suffices and soft-start is mandatory |
Compared with TPS61040DRVR and MAX17062ETA+, LM27313XQMF/NOPB offers superior power density due to its 1.6-MHz operation and 30-V FET-enabling smaller passives and higher output voltage flexibility-but requires careful attention to PCB thermal relief on the exposed pad for sustained 260-mA loads.
Availability
LM27313XQMF/NOPB is available at Aetrix Electronics and suitable for portable medical monitors, handheld test equipment, and battery-powered IoT gateways requiring stable component supply, long-term lifecycle support, and automotive-grade reliability validation.
Supply support for LM27313XQMF/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 technologies-with over 50 years of innovation in high-reliability power conversion ICs.
The LM27313 product line delivers compact, high-frequency boost regulators optimized for space-constrained portable electronics-including PDAs, GPS units, and digital cameras-where small solution size and low quiescent current are critical.
FAQ
What is the maximum output voltage achievable with LM27313XQMF/NOPB?
The LM27313XQMF/NOPB supports output voltages up to 28 V, limited by its 30-V internal DMOS FET breakdown rating and duty cycle constraints. At typical operating conditions (VIN = 5 V, VOUT = 12 V), it delivers 260 mA with >88% efficiency. Higher outputs require careful inductor/diode selection and thermal derating per the datasheet's max duty cycle curves.
Does LM27313XQMF/NOPB require external compensation components?
No, LM27313XQMF/NOPB features fully internal compensation-no external RC networks are needed. However, a feed-forward capacitor (CF = 220 pF recommended) between FB and VIN is mandatory for loop stability and must be placed per the datasheet layout guidelines to prevent oscillation.
What is the shutdown current specification for LM27313XQMF/NOPB?
The LM27313XQMF/NOPB draws less than 1 µA in shutdown mode, verified across −40°C to +125°C junction temperature. This ultra-low quiescent draw extends battery life in standby applications such as GPS trackers and portable sensors where intermittent wake-up is required.
Can LM27313XQMF/NOPB drive white LEDs directly?
LM27313XQMF/NOPB is not a constant-current LED driver IC but can regulate LED string voltage via FB feedback. To drive white LEDs, configure R1/R2 to set VOUT to the required forward voltage (e.g., 12 V for 3× LEDs), then add a series current-sense resistor and op-amp or dedicated LED driver IC for precise current control.
What package type and thermal performance does LM27313XQMF/NOPB offer?
LM27313XQMF/NOPB uses a 5-pin SOT-23 package (2.90 mm × 1.60 mm) with exposed thermal pad. Its junction-to-board thermal resistance (RθJB) is 28.1°C/W, enabling reliable operation at 260 mA continuous load with standard 2-layer PCB copper pour-no heatsink required under typical ambient conditions.
LM27313XQMF/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 14V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- 28V
- Current - Output:
- 800mA (Switch)
- Frequency - Switching:
- 1.6MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM27313XQMF/NOPB FAQ
1.How can I place an order for LM27313XQMF/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM27313XQMF/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 LM27313XQMF/NOPB reliable?
The price and inventory of LM27313XQMF/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM27313XQMF/NOPB is usually 5 days.
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4.How is shipping managed for LM27313XQMF/NOPB?
LM27313XQMF/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM27313XQMF/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 LM27313XQMF/NOPB?
For technical support, including LM27313XQMF/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM27313XQMF/NOPB requirements.
6.How does Aetrix verify that LM27313XQMF/NOPB is sourced from the original manufacturer or authorized distributors?
All LM27313XQMF/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 LM27313XQMF/NOPB meets industry standards.
7.What is the process for return or replacement of LM27313XQMF/NOPB?
All LM27313XQMF/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM27313XQMF/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 LM27313XQMF/NOPB part is unused and in its original packaging.
Return procedure for LM27313XQMF/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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