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Texas Instruments LM27313XMF/NOPB
- Part No.:
- LM27313XMF/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LM27313XMF/NOPB.pdf
- Description:
- IC REG BOOST ADJ 800MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:11,071
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Product details
Overview
LM27313XMF/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 (RDS(ON) = 650 mΩ max), and 800-mA peak switch current limit. It operates from 2.7 V to 14 V input and delivers regulated output up to 28 V-used in portable media players for 12-V white LED backlighting.
For engineers reviewing the LM27313XMF/NOPB datasheet, LM27313XMF/NOPB pinout, LM27313XMF/NOPB application, or LM27313XMF/NOPB equivalent, key selection criteria include shutdown quiescent current (<1 µA), internal compensation eliminating external compensation components, cycle-by-cycle current limiting, and SOT-23-5 package compatibility with space-constrained handheld designs.
Technical Context
The LM27313XMF/NOPB uses peak-current-mode control with an internal ramp generator and PWM comparator comparing sensed FET current against feedback-derived reference. Its 1.6-MHz oscillator enables ceramic capacitor use (2.2 µF input, 4.7 µF output) and eliminates audible noise in portable applications.
Feedback regulation relies on a precision 1.23-V reference (±2.4% over –40°C to +125°C) applied to the FB pin via external resistor divider; output voltage is set by R1/R2 ratio per VOUT = VFB × (1 + R1/R2). The SHDN pin provides logic-level enable/disable with 0.5-V threshold and <24 nA shutdown current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.6 MHz (typical); enables use of sub-10-µH inductors and ≤10-µF ceramic capacitors for compact PCB layout. |
| Input Voltage Range | 2.7 V to 14 V; supports single-cell Li-ion (3.0–4.2 V), dual-cell alkaline (2.7–3.6 V), and 12-V automotive accessory rails. |
| Output Voltage Range | Up to 28 V; set externally via FB resistive divider; supports 5-V, 12-V, 15-V, 20-V, and 25-V boost configurations. |
| Peak Switch Current Limit | 800 mA (min); cycle-by-cycle protected; limits inductor size and ensures safe operation under short-circuit or overload. |
| Feedback Reference Voltage | 1.23 V (±2.4% over temperature); defines output accuracy baseline; requires R2 = 13.3 kΩ for ~92-µA divider bias current. |
| Shutdown Quiescent Current | 24 nA (typical); extends battery life in always-on portable devices during standby mode. |
| RDS(ON) | 650 mΩ (max at 100 mA); determines conduction loss and thermal rise; enables >88% efficiency at 250-mA load (5 V → 12 V). |
Pinout & Package
LM27313XMF/NOPB is housed in a 5-pin SOT-23 package (2.90 mm × 1.60 mm, 0.95 mm height) with exposed pad for thermal enhancement. Pin 1 (SW) connects to inductor/diode node; Pin 2 (GND) serves as analog and power ground return; Pin 3 (FB) senses output via resistive divider; Pin 4 (SHDN) accepts logic-level control; Pin 5 (VIN) supplies input power.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SW | Switch Drain Node | Connects to inductor and Schottky diode anode; carries high-frequency pulsed current; requires low-inductance routing. |
| 2 - GND | Analog & Power Ground | Single-point ground for FB, SHDN, and VIN bypass; must tie directly to power plane under IC for stability. |
| 3 - FB | Feedback Input | High-impedance node (60 nA bias); connects to top of R1–R2 divider; sensitive to noise-route away from SW. |
| 4 - SHDN | Logic-Level Enable/Disable | Active-high; 0.5-V threshold; pull to VIN if unused; drives <1 µA when active; sinks <24 nA in shutdown. |
| 5 - VIN | Power Input | Accepts 2.7–14 V; requires local 2.2-µF X5R/X7R ceramic capacitor placed within 2 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Compensation | Eliminates need for external compensation network-reduces BOM count and layout sensitivity. |
| 1.6-MHz Fixed Frequency | Enables consistent EMI filtering and avoids audio-band switching; supports small passive component selection. |
| 30-V Integrated FET | Supports output voltages up to 28 V without external switch; simplifies design for multi-rail portable systems. |
| Cycle-by-Cycle Current Limit | Provides immediate overcurrent protection per switching cycle-prevents inductor saturation and thermal runaway. |
| Logic-Level Shutdown | Compatible with 1.8-V, 3.3-V, and 5-V microcontrollers; consumes only 24 nA in shutdown-ideal for battery longevity. |
Applications
| White LED Backlighting | Portable Media Player Power |
|---|---|
|
Use Scenario: Driving parallel strings of white LEDs requiring stable 12-V bias from a 3.3-V or 5-V battery source in handheld video players. IC Role / Device Role / Timing Role: Boost converter regulating constant-voltage output; FB pin monitors LED string voltage; SW pin switches at 1.6 MHz to minimize EMI near RF sections. Use Value: Delivers 260 mA typical output current with >88% efficiency at 5 V → 12 V, enabling >5-hour playback on single-cell Li-ion. |
Use Scenario: Generating 5-V or 12-V auxiliary rail for USB peripherals, SD card interfaces, or audio codecs in palm-sized gaming devices. IC Role / Device Role / Timing Role: Primary DC-DC boost stage; SHDN pin synchronized with system sleep mode; internal 1.23-V reference ensures ±2.4% output accuracy across temperature. Use Value: Reduces solution size by 40% vs. lower-frequency alternatives-fits within 8 mm × 8 mm board area with 10-µH inductor and 4.7-µF ceramic output cap. |
| Digital Camera Flash Charging | GPS Receiver Bias Supply |
|
Use Scenario: Charging high-voltage capacitor (200–300 V) for xenon flash via intermediate 15-V rail in compact digital cameras. IC Role / Device Role / Timing Role: First-stage boost regulator stepping 3.7-V battery to 15 V; operates in discontinuous mode during low-duty charging pulses. Use Value: Achieves 80% efficiency at 100-mA load (3.7 V → 15 V); 800-mA current limit prevents inrush damage to charge pump stages. |
Use Scenario: Providing clean, low-noise 3.3-V or 5-V supply to GPS baseband ICs and RF front-end in automotive navigation units. IC Role / Device Role / Timing Role: Low-quiescent boost stage; SHDN pin controlled by MCU to disable during GPS cold start; FB divider rejects input ripple. Use Value: Maintains <1 µA shutdown current-critical for vehicle battery drain compliance; 1.6-MHz switching avoids interference with 1.575-GHz GPS L1 band. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61040DRVR | Higher 1.5-A switch current; 500-kHz to 3-MHz adjustable frequency; requires external compensation. | Better suited for higher-output-current (>300 mA) or variable-frequency EMI optimization needs. | Select TPS61040DRVR when >300-mA output or programmable frequency is required; LM27313XMF/NOPB preferred for minimal-BOM, fixed-frequency designs. |
| MAX17064ETA+ | Integrated Schottky diode; 2.5-V to 5.5-V input range; 2-MHz fixed frequency; no SHDN pin. | Limited to low-input-voltage applications; lacks shutdown control-unsuitable for battery-powered sleep modes. | Choose MAX17064ETA+ only for ultra-low-VIN (≤5.5 V) space-constrained apps where SHDN is unnecessary; LM27313XMF/NOPB offers wider VIN and full control. |
Compared with TPS61040DRVR and MAX17064ETA+, the LM27313XMF/NOPB uniquely balances wide 2.7–14-V input support, integrated 30-V FET, logic-level SHDN, and internal compensation-making it optimal for cost-sensitive, battery-operated portable systems requiring rapid time-to-market.
Availability
LM27313XMF/NOPB is available at Aetrix Electronics and suitable for portable media players, digital cameras, GPS navigation units, and white LED backlighting systems requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.
Supply support for LM27313XMF/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 designing analog ICs, embedded processors, and connectivity solutions for industrial, automotive, and consumer markets since 1930.
The LM27313XMF/NOPB belongs to TI's high-frequency boost converter product line, engineered specifically for space-constrained portable electronics needing efficient, low-noise, minimal-component DC-DC conversion from single-cell batteries.
FAQ
What is the maximum output voltage achievable with the LM27313XMF/NOPB?
The LM27313XMF/NOPB supports output voltages up to 28 V, limited by its 30-V internal DMOS FET breakdown rating and duty cycle constraints. At 5-V input, typical operation reaches 12 V to 25 V; higher outputs require careful inductor/diode selection and thermal derating above 20 V. The LM27313XMF/NOPB datasheet specifies VSW ≤ 30 V absolute maximum, making 28 V the practical upper bound for reliable continuous operation.
Does the LM27313XMF/NOPB require external compensation components?
No, the LM27313XMF/NOPB features fully internal compensation-no external capacitor or resistor network is needed for loop stability. However, a feed-forward capacitor (CF = 220 pF recommended) between FB and VIN is mandatory to place a zero in the control loop and prevent oscillation. This is distinct from compensation; it is a stability-enabling component specified in TI's application notes for the LM27313XMF/NOPB.
What is the minimum input voltage for reliable startup of the LM27313XMF/NOPB?
The LM27313XMF/NOPB guarantees operation down to 2.7 V per its Recommended Operating Conditions. Startup is functional at 2.7 V with proper input capacitance (≥2.2 µF ceramic), but output regulation may degrade below 3.0 V due to reduced gate drive for the internal FET. For robust performance across temperature, design for ≥3.0 V minimum input; the LM27313XMF/NOPB will not latch up or fail at 2.7 V, but efficiency and load capability decrease linearly below that point.
Can the LM27313XMF/NOPB drive multiple white LED strings in parallel?
Yes-the LM27313XMF/NOPB can supply constant-voltage output to parallel LED strings when paired with individual current-limiting resistors or external LED driver ICs. It is not a constant-current LED driver itself, but its stable 12-V or 15-V output (set via FB divider) enables uniform biasing of 3–5 white LEDs per string. Typical 260-mA output current supports up to four 60-mA strings; thermal limits and efficiency must be verified per application using the LM27313XMF/NOPB efficiency curves.
Is the LM27313XMF/NOPB pin-compatible with the LM27313-Q1 automotive variant?
Yes, the LM27313XMF/NOPB and LM27313-Q1 share identical pinout, package (SOT-23-5), and electrical functionality. The LM27313-Q1 adds AEC-Q100 Grade 1 qualification (–40°C to +125°C junction), enhanced ESD robustness (±2000-V HBM), and automotive-grade traceability-but requires no PCB or schematic changes when substituting into non-automotive designs. The LM27313XMF/NOPB remains fully compatible in form, fit, and function.
LM27313XMF/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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
LM27313XMF/NOPB FAQ
1.How can I place an order for LM27313XMF/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM27313XMF/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 LM27313XMF/NOPB reliable?
The price and inventory of LM27313XMF/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM27313XMF/NOPB is usually 5 days.
3.What payment methods are accepted for LM27313XMF/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM27313XMF/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM27313XMF/NOPB?
LM27313XMF/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM27313XMF/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 LM27313XMF/NOPB?
For technical support, including LM27313XMF/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM27313XMF/NOPB requirements.
6.How does Aetrix verify that LM27313XMF/NOPB is sourced from the original manufacturer or authorized distributors?
All LM27313XMF/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 LM27313XMF/NOPB meets industry standards.
7.What is the process for return or replacement of LM27313XMF/NOPB?
All LM27313XMF/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM27313XMF/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 LM27313XMF/NOPB part is unused and in its original packaging.
Return procedure for LM27313XMF/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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