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Texas Instruments LM2700QMTX-ADJ/NOPB
- Part No.:
- LM2700QMTX-ADJ/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2700QMTX-ADJ/NOPB.pdf
- Description:
- IC REG BOOST ADJ 2.55A 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,935
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Product details
Overview
LM2700QMTX-ADJ/NOPB from Texas Instruments is an AEC-Q100 Grade 2 qualified step-up PWM DC/DC converter with integrated 3.6A/80mΩ NMOS switch, pin-selectable 600kHz or 1.25MHz switching frequency, and adjustable output voltage up to 17.5V. It operates from 2.2V–12V input and delivers stable bias for LCD displays in automotive and portable electronics.
For engineers reviewing the LM2700QMTX-ADJ/NOPB datasheet, LM2700QMTX-ADJ/NOPB pinout, LM2700QMTX-ADJ/NOPB application, or LM2700QMTX-ADJ/NOPB equivalent, key selection criteria include its 2.5A continuous output capability, thermal shutdown and input undervoltage protection, compensation pin (VC) for custom loop tuning, and dual-package availability in 14-lead TSSOP or WSON.
Technical Context
The LM2700QMTX-ADJ/NOPB implements current-mode PWM control with internal ramp compensation to suppress sub-harmonic oscillation above 50% duty cycle. Its VC pin provides direct access to the error amplifier output for external compensation network design using RC and CC components.
It features dedicated protection circuitry including thermal shutdown (150°C junction limit), input undervoltage lockout (UVP thresholds: 1.95–2.2V ON, 1.85–2.1V OFF), and output overvoltage prevention. Shutdown mode reduces quiescent current to 5µA, while light-load operation maintains continuous conduction with 2.0mA (600kHz) or 3.0mA (1.25MHz) quiescent draw.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.2V to 12V - supports single Li-ion, dual alkaline, or automotive 9V–12V rails without pre-regulation. |
| Output Voltage Range | Adjustable up to 17.5V - set via external resistor divider on FB pin with 1.26V reference. |
| Switch Current Limit | 2.55A to 4.3A (typ. 3.6A) - ensures robust overload handling with internal NMOS switch. |
| Switch RDS(ON) | 80mΩ (typ.) at VIN = 2.7V - minimizes conduction loss and thermal rise under full load. |
| Quiescent Current | 2.0mA @ 600kHz (switching), 5µA in shutdown - enables long battery life in portable systems. |
| Switching Frequency | 600kHz or 1.25MHz (pin-selectable via FSLCT) - balances EMI filtering ease vs. component size. |
| Operating Temp Range | −40°C to +105°C - meets AEC-Q100 Grade 2 for under-hood and industrial environments. |
Pinout & Package
LM2700QMTX-ADJ/NOPB is available in a 14-lead TSSOP package (MTX suffix) with exposed thermal pad. Pin layout follows TI's standard top-view configuration with three PGND pins (4,5,6), three SW pins (8,9,10), and dedicated AGND (4), VC (1), FB (2), SHDN (3), VIN (12), FSLCT (13), and two NC pins (11,14).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VC (Pin 1) | Compensation network node | Connects to output of internal error amplifier; sets loop stability via external RC/CC network. |
| FB (Pin 2) | Voltage feedback input | Monitors output via resistor divider; regulates output to 1.26V reference with ±2.5% tolerance. |
| SHDN (Pin 3) | Active-low enable control | Pulls low to disable switching; draws ≤1µA when high, <20µA when low. |
| AGND (Pin 4) | Analog ground reference | Reference for FB, VC, and internal analog circuitry; must tie directly to PGND at package. |
| PGND (Pins 5,6,7) | Power ground return | High-current return path for switch and inductor; requires low-inductance connection to AGND. |
| SW (Pins 8,9,10) | Switch node | Connects internal NMOS drain to external inductor and Schottky diode anode. |
| NC (Pin 11) | No internal connection | Must be left floating; not bonded internally. |
| VIN (Pin 12) | Main power input | Supplies internal circuitry and switch driver; bypass with ≥10µF ceramic capacitor near pin. |
| FSLCT (Pin 13) | Frequency select input | Ground = 600kHz, connect to VIN = 1.25MHz; logic-level compatible with 0.3V/0.6V thresholds. |
| NC (Pin 14) | Internally grounded | TI specifies connection to ground; serves as thermal pad anchor in TSSOP package. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 2 qualification | Validated for −40°C to +105°C operation with production test coverage per automotive reliability standards. |
| Pin-selectable switching frequency | Enables layout reuse across 600kHz (lower EMI, larger inductors) and 1.25MHz (smaller passives, tighter regulation) designs. |
| Internal 3.6A/80mΩ NMOS switch | Eliminates external MOSFET and gate driver; reduces BOM count and PCB area in space-constrained applications. |
| VC compensation pin | Allows full customization of loop dynamics using external RC/CC network-critical for stability with varying output capacitance or load profiles. |
| Thermal shutdown & UVP | Protects against die overheating (>150°C) and startup under insufficient input voltage (UVP hysteresis ~0.2V). |
Applications
| Automotive LCD Bias Supply | Portable Medical Display Power |
|---|---|
Use Scenario: Generating +12V and −8V bias rails for TFT-LCD panels in automotive instrument clusters. IC Role / Device Role / Timing Role: Primary boost controller delivering regulated positive output; paired with inverting charge pump for negative rail generation. Use Value: AEC-Q100 qualification ensures reliability across temperature cycling and vibration; 600kHz operation simplifies EMI filter design in noisy vehicle environments. | Use Scenario: Powering monochrome OLED and color LCD modules in handheld diagnostic devices powered by single-cell Li-ion. IC Role / Device Role / Timing Role: Adjustable-output boost converter supplying 5V–8.5V to display backlight and interface circuitry. Use Value: 2.2V minimum input enables operation down to 3.0V battery voltage; 5µA shutdown current extends device runtime between charges. |
| GSM/CDMA Handset Backlight Driver | Digital Camera CCD Bias Generator |
Use Scenario: Driving white LED arrays in legacy 2G/3G mobile handsets requiring constant-current regulation via external sense resistor. IC Role / Device Role / Timing Role: High-efficiency boost stage providing stable 17.5V max output to LED string anodes. Use Value: 1.25MHz switching allows use of compact 2.2µH inductors and 10µF ceramic output caps-critical for ultra-thin form factors. | Use Scenario: Generating precise +15V bias for CCD image sensor analog front-end circuits in compact digital cameras. IC Role / Device Role / Timing Role: Low-noise, tightly regulated boost source with minimal output ripple (<20mVPP) due to VC-tuned loop response. Use Value: 1.26V FB reference with ±2.5% tolerance ensures accurate output setting; continuous conduction mode prevents audible noise during image capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up DC/DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | Higher 10A switch current limit; fixed 500kHz/1MHz frequency; no VC pin for compensation tuning. | Better suited for high-current loads >3A; less flexible loop optimization for low-ESR ceramic outputs. | Select when peak output current exceeds 2.5A or when simplified layout (no RC/CC network) is prioritized over fine-grained stability control. |
| MAX17062ETA+ | AEC-Q100 Grade 2; 2.2A switch; 1.2MHz fixed frequency; integrated soft-start; no FSLCT pin. | Lacks frequency selection and VC pin; includes soft-start but lower current rating limits output power scalability. | Choose for cost-sensitive automotive infotainment displays where 2.2A output suffices and board space is constrained by integrated soft-start. |
Compared with TPS61088RHLR and MAX17062ETA+, the LM2700QMTX-ADJ/NOPB offers unique flexibility through its pin-selectable frequency and VC-based compensation-enabling optimized transient response and EMI performance across diverse load and capacitor conditions, while maintaining AEC-Q100 compliance and 2.5A continuous delivery.
Availability
LM2700QMTX-ADJ/NOPB is available at Aetrix Electronics and suitable for automotive instrument clusters, portable medical displays, GSM/CDMA handset backlighting, and digital camera CCD biasing requiring stable component supply across extended temperature ranges.
Supply support for LM2700QMTX-ADJ/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-reliability power conversion solutions.
The LM2700Q product line was designed specifically for automotive-grade LCD bias and portable display power applications demanding AEC-Q100 qualification, wide input range, and flexible frequency/compensation configuration.
FAQ
What is the maximum output voltage supported by the LM2700QMTX-ADJ/NOPB?
The LM2700QMTX-ADJ/NOPB supports an adjustable output voltage up to 17.5V, set by an external resistor divider connected to the FB pin. The internal feedback reference is 1.26V with ±2.5% tolerance, and output regulation remains stable across the full −40°C to +105°C operating range. This makes LM2700QMTX-ADJ/NOPB suitable for driving high-voltage LCD bias rails and white LED strings.
How does the FSLCT pin configure switching frequency on the LM2700QMTX-ADJ/NOPB?
The FSLCT pin on the LM2700QMTX-ADJ/NOPB selects between two fixed frequencies: grounding FSLCT sets 600kHz operation (480–720kHz range), while connecting it to VIN selects 1.25MHz (1.0–1.5MHz range). Thresholds are specified at 0.3V (low) and 0.6V (high), ensuring compatibility with standard logic interfaces. This dual-frequency capability allows designers to optimize for either EMI filtering ease or passive component miniaturization in the LM2700QMTX-ADJ/NOPB application.
What protection features are integrated into the LM2700QMTX-ADJ/NOPB?
The LM2700QMTX-ADJ/NOPB integrates thermal shutdown (activates at ~150°C junction temperature), input undervoltage protection (UVP with 1.95–2.2V turn-on and 1.85–2.1V turn-off hysteresis), and output overvoltage prevention. It also enters a 5µA shutdown state when SHDN is pulled low. These protections operate continuously during normal operation and are validated across the full AEC-Q100 Grade 2 temperature range, enhancing system robustness in the LM2700QMTX-ADJ/NOPB design.
Can the LM2700QMTX-ADJ/NOPB operate efficiently at light loads?
Yes, the LM2700QMTX-ADJ/NOPB maintains continuous conduction mode even at light loads, with quiescent current of 2.0mA at 600kHz and 3.0mA at 1.25MHz when active, and only 5µA in shutdown. Unlike burst-mode converters, it avoids audible noise and output voltage jumps during load transients-critical for display bias and sensor power applications where LM2700QMTX-ADJ/NOPB is commonly deployed.
What package type does the LM2700QMTX-ADJ/NOPB use, and how many pins are grounded?
The LM2700QMTX-ADJ/NOPB uses a 14-lead TSSOP package (MTX suffix) with exposed thermal pad. It has three dedicated PGND pins (pins 5, 6, and 7) and one AGND pin (pin 4), which must be tied together directly at the package per TI layout guidelines. Pin 14 is internally grounded and should be connected to system ground for thermal and electrical integrity in all LM2700QMTX-ADJ/NOPB implementations.
LM2700QMTX-ADJ/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- 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):
- 2.2V
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 1.26V
- Voltage - Output (Max):
- 17.5V
- Current - Output:
- 2.55A (Switch)
- Frequency - Switching:
- 600kHz, 1.25MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
LM2700QMTX-ADJ/NOPB FAQ
1.How can I place an order for LM2700QMTX-ADJ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2700QMTX-ADJ/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 LM2700QMTX-ADJ/NOPB reliable?
The price and inventory of LM2700QMTX-ADJ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2700QMTX-ADJ/NOPB is usually 5 days.
3.What payment methods are accepted for LM2700QMTX-ADJ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2700QMTX-ADJ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2700QMTX-ADJ/NOPB?
LM2700QMTX-ADJ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2700QMTX-ADJ/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 LM2700QMTX-ADJ/NOPB?
For technical support, including LM2700QMTX-ADJ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2700QMTX-ADJ/NOPB requirements.
6.How does Aetrix verify that LM2700QMTX-ADJ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2700QMTX-ADJ/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 LM2700QMTX-ADJ/NOPB meets industry standards.
7.What is the process for return or replacement of LM2700QMTX-ADJ/NOPB?
All LM2700QMTX-ADJ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2700QMTX-ADJ/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 LM2700QMTX-ADJ/NOPB part is unused and in its original packaging.
Return procedure for LM2700QMTX-ADJ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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