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Texas Instruments LM27313XQMFX/NOPB
- Part No.:
- LM27313XQMFX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM27313XQMFX/NOPB.pdf
- Description:
- IC REG BOOST ADJ 800MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:8,763
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Product details
Overview
LM27313XQMFX/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 in digital cameras and GPS devices.
For engineers reviewing the LM27313XQMFX/NOPB datasheet, LM27313XQMFX/NOPB pinout, LM27313XQMFX/NOPB application, or LM27313XQMFX/NOPB equivalent, key selection criteria include its internally compensated architecture, cycle-by-cycle current limiting, logic-level shutdown (24 nA shutdown current), and thermal shutdown protection-enabling robust, low-component-count boost solutions without external compensation.
Technical Context
The LM27313XQMFX/NOPB uses peak-current-mode control with an internal ramp generator and PWM comparator to regulate output voltage via feedback from the FB pin. Its 50-mΩ sense path enables precise per-cycle current monitoring independent of external components.
It integrates a bandgap reference, Gm amplifier, and S-R latch driving the 30-V DMOS FET. Shutdown functionality is implemented as an active-low logic-level input (SHDN) that disables switching and reduces quiescent current to 24 nA-critical for battery-powered standby operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.6 MHz (fixed); enables use of ≤10 µH inductors and ≤4.7 µF ceramic capacitors for ultra-compact PCB layouts |
| Input Voltage Range | 2.7 V to 14 V; supports single-cell Li-ion (3.0–4.2 V), USB (5 V), and automotive 12-V rail inputs without pre-regulation |
| Output Voltage Range | Programmable via FB resistive divider; supports 5 V to 28 V outputs (e.g., 12 V @ 260 mA typical) |
| Peak Switch Current | 800 mA (min); limits inductor size and ensures stable operation under transient load steps up to 260 mA |
| RDS(ON) | 650 mΩ (max at 100 mA); defines conduction loss and thermal rise during continuous operation |
| Shutdown Current | 24 nA (typ); extends battery life in always-on systems requiring periodic wake-up (e.g., GPS tracking) |
| Feedback Reference | 1.23 V (±2.5%); sets output accuracy and stability across −40°C to +125°C junction temperature range |
Pinout & Package
SOT-23-5 package (2.90 mm × 1.60 mm body size) with exposed pad for thermal enhancement; thermally optimized for high-power-density boost conversion in handheld devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 – SW | Switch Drain Output | Connects directly to inductor and Schottky diode anode; carries pulsed 800-mA peak current and must be routed with low-inductance layout |
| 2 – GND | Analog & Power Ground | Common return for FB, SHDN, and VIN; requires low-impedance connection to thermal pad and input/output capacitor grounds |
| 3 – FB | Feedback Input | High-impedance node (60 nA bias) sensing output voltage via resistive divider; sensitive to noise and requires short trace routing |
| 4 – SHDN | Active-Low Enable | Logic-compatible input; pulled high to VIN via 50 kΩ resistor when unused; drives device into 24-nA shutdown state when grounded |
| 5 – VIN | Power Input | Supplies internal circuitry and switch gate drive; requires local 2.2 µF X5R/X7R ceramic capacitor placed within 2 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| Internally Compensated Control Loop | Eliminates need for external compensation network-reduces BOM count and design validation time for standard boost configurations |
| Cycle-by-Cycle Current Limiting | Prevents switch overcurrent during startup, short-circuit, or heavy transient loads without requiring external current-sense resistor |
| Thermal Shutdown Protection | Automatically disables switching when junction temperature exceeds safe limit-prevents permanent damage during sustained overload or poor heatsinking |
| Logic-Level Shutdown Interface | Accepts standard CMOS/TTL logic signals; enables seamless integration with microcontroller GPIOs for dynamic power sequencing |
| High-Switching-Frequency Operation | 1.6-MHz clock allows <10 µH inductors and <10 µF ceramics-cutting solution footprint by >40% vs. 500-kHz alternatives |
Applications
| White LED Backlighting | Digital Camera Power Supply |
|---|---|
Use Scenario: Driving 3–5 white LEDs in series from a 3.3-V or 5-V battery source in compact camera modules. IC Role / Device Role / Timing Role: Boost converter regulating constant current through LED string using FB feedback and current-sense resistor. Use Value: Delivers 260 mA at 12 V with >88% efficiency at 250 mA load-enabling bright, flicker-free illumination without audible coil whine. | Use Scenario: Generating 12-V rail for CCD/CMOS sensor bias and flash charging circuits in portable digital cameras. IC Role / Device Role / Timing Role: Primary DC-DC boost stage converting 3.7-V Li-ion to stable 12-V output with fast transient response. Use Value: 1.6-MHz switching avoids interference with image sensor sampling clocks; internal current limiting protects against flash capacitor inrush. |
| GPS Receiver Module | Portable Media Player Audio Rail |
Use Scenario: Providing clean 5-V or 12-V supply to GPS RF front-end and baseband processor in battery-operated navigation units. IC Role / Device Role / Timing Role: High-efficiency boost regulator powering LNA, mixer, and ADC sections with low EMI emissions. Use Value: 24-nA shutdown current extends GPS tracking runtime between charges; SOT-23-5 footprint fits tight antenna module PCBs. | Use Scenario: Boosting 3.7-V battery voltage to 5-V or 9-V for headphone amplifier and DAC power in portable audio players. IC Role / Device Role / Timing Role: Low-noise, high-PSRR boost stage supplying analog audio circuitry with minimal ripple-induced distortion. Use Value: Internally compensated loop ensures stability with small ceramic caps; 650-mΩ RDS(ON) minimizes dropout and thermal rise at 200-mA loads. |
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 frequency; 28-V switch; 400-mA switch current; requires external compensation | Lower efficiency at light loads; larger inductor/capacitor requirements due to lower frequency | Preferred where cost sensitivity outweighs size constraints and higher quiescent current (55 µA) is acceptable |
| MAX1706CASA+ | 1.2-MHz switching; 28-V switch; 600-mA switch current; integrated soft-start; no shutdown pin | Lacks logic-level enable; less flexible for battery-aware power sequencing | Selected when soft-start is mandatory and shutdown control is handled externally |
Compared with TPS61040DRVR and MAX1706CASA+, the LM27313XQMFX/NOPB offers superior power density (1.6 MHz), lowest shutdown current (24 nA), and fully integrated compensation-making it optimal for miniaturized, battery-sensitive boost applications where layout area and standby power are critical.
Availability
LM27313XQMFX/NOPB is available at Aetrix Electronics and suitable for portable media players, GPS navigation units, and digital camera power management requiring stable component supply and long-term production continuity.
Supply support for LM27313XQMFX/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 designing analog ICs, embedded processors, and power management solutions for industrial, automotive, and consumer markets.
The LM27313XQMFX/NOPB belongs to TI's high-frequency boost converter product line, engineered specifically for compact, battery-powered portable electronics needing efficient step-up conversion with minimal external components.
FAQ
What is the maximum output voltage achievable with LM27313XQMFX/NOPB?
The LM27313XQMFX/NOPB supports output voltages up to 28 V, limited by its 30-V internal DMOS FET breakdown rating and duty cycle constraints. At VIN = 2.7 V and VOUT = 28 V, the required duty cycle approaches 90%, which remains within the device's 80% maximum specified duty cycle only if efficiency losses and diode forward voltage are accounted for-practical designs typically cap at 25 V for reliable continuous operation.
Does LM27313XQMFX/NOPB require external compensation components?
No, the LM27313XQMFX/NOPB features an internally compensated control loop, eliminating the need for external compensation capacitors or resistors. However, a feed-forward capacitor (CF = 220 pF recommended) must be placed between FB and ground to ensure loop stability-this is not compensation but a required zero-setting element per TI's application guidance.
Can LM27313XQMFX/NOPB operate with a 3.3-V input to generate 5-V output?
Yes, the LM27313XQMFX/NOPB operates reliably with 3.3-V input to deliver 5-V output. At this condition, typical efficiency exceeds 90% at 200 mA load, and the device maintains regulation across −40°C to +125°C junction temperature. The 2.7-V minimum input ensures compatibility with discharged Li-ion cells down to 3.0 V.
What is the thermal performance of LM27313XQMFX/NOPB in SOT-23-5 package?
The LM27313XQMFX/NOPB has a junction-to-board thermal resistance (RθJB) of 28.1°C/W in the SOT-23-5 package. With proper PCB copper pour (≥100 mm² thermal pad connected to internal ground plane), it sustains 260 mA output at 12 V without exceeding 125°C junction temperature at 25°C ambient-verified per TI's SNVS487E thermal metrics table.
Is LM27313XQMFX/NOPB qualified for automotive applications?
No, LM27313XQMFX/NOPB is the commercial-grade variant. For automotive use, TI offers the LM27313-Q1, which is AEC-Q100 Grade 1 qualified (−40°C to +125°C operating junction temperature) and tested to stricter ESD and reliability standards. The LM27313XQMFX/NOPB is intended for industrial and consumer portable electronics only.
LM27313XQMFX/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
LM27313XQMFX/NOPB FAQ
1.How can I place an order for LM27313XQMFX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM27313XQMFX/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 LM27313XQMFX/NOPB reliable?
The price and inventory of LM27313XQMFX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM27313XQMFX/NOPB is usually 5 days.
3.What payment methods are accepted for LM27313XQMFX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM27313XQMFX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM27313XQMFX/NOPB?
LM27313XQMFX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM27313XQMFX/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 LM27313XQMFX/NOPB?
For technical support, including LM27313XQMFX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM27313XQMFX/NOPB requirements.
6.How does Aetrix verify that LM27313XQMFX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM27313XQMFX/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 LM27313XQMFX/NOPB meets industry standards.
7.What is the process for return or replacement of LM27313XQMFX/NOPB?
All LM27313XQMFX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM27313XQMFX/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 LM27313XQMFX/NOPB part is unused and in its original packaging.
Return procedure for LM27313XQMFX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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