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Texas Instruments LM2700MTX-ADJ/NOPB
- Part No.:
- LM2700MTX-ADJ/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
LM2700MTX-ADJ/NOPB.pdf
- Description:
- IC REG BOOST ADJ 2.55A 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:9,698
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Product details
Overview
LM2700MTX-ADJ/NOPB from Texas Instruments is a pin-selectable 600 kHz / 1.25 MHz, 2.5 A step-up PWM DC/DC converter with an integrated 3.6 A / 80 mΩ NMOS switch, adjustable output up to 17.5 V, and input voltage range of 2.2 V to 12 V. It delivers 500 mA at 8 V from a single Li-ion cell and is optimized for LCD bias supplies in portable electronics.
For engineers reviewing the LM2700MTX-ADJ/NOPB datasheet, LM2700MTX-ADJ/NOPB pinout, LM2700MTX-ADJ/NOPB application, or LM2700MTX-ADJ/NOPB equivalent, key selection criteria include its dual-frequency operation, internal current-limit protection (2.55–4.3 A), thermal shutdown, undervoltage lockout (1.95–2.2 V on-threshold), and compensation-pin-based loop stability tuning for ceramic output capacitors.
Technical Context
The LM2700MTX-ADJ/NOPB employs current-mode PWM control with ramp compensation to suppress subharmonic oscillation above 50% duty cycle. Its VC pin provides direct access to the error amplifier output for external compensation network design using RC/CC networks.
It integrates dedicated protection circuitry: input undervoltage lockout (UVP), overtemperature shutdown, and output overvoltage prevention. Shutdown mode reduces quiescent current to 5 µA, while operating quiescent current is 2.0 mA at 600 kHz and 3.0 mA at 1.25 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Current Limit | 2.55–4.3 A typ/max - sets peak inductor current and defines maximum load capability under low-VIN conditions. |
| Feedback Voltage | 1.2285–1.2915 V - precise reference enabling accurate output voltage setting via external resistor divider. |
| Switch RDS(on) | 80–150 mΩ - determines conduction loss and thermal rise at full load; measured at VIN = 2.7 V, ISW = 2 A. |
| Switching Frequency | 480–720 kHz (FSLCT = GND) or 1–1.5 MHz (FSLCT = VIN) - selectable for EMI filtering trade-offs and inductor size optimization. |
| Input Voltage Range | 2.2 V to 12 V - supports single-cell Li-ion (2.7–4.2 V), 3.3 V logic rails, and multi-cell alkaline/NiMH inputs. |
| Max Output Voltage | 17.5 V - sufficient for TFT-LCD VPOS/VNEG bias generation and white LED strings. |
| Thermal Resistance (TSSOP) | 150 °C/W - defines junction-to-ambient temperature rise under continuous 2.5 A switching; WSON version is 45 °C/W. |
Pinout & Package
LM2700MTX-ADJ/NOPB is packaged in a 14-lead TSSOP (PW package code), with exposed thermal pad. Pin 1 is marked by a dot; pins 5–7 and 8–10 are paralleled PGND and SW terminals respectively to reduce parasitic inductance and improve thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VC) | Compensation node | Output of internal error amplifier; connects to RC/CC network for loop stability tuning and transient response optimization. |
| 2 (FB) | Voltage feedback input | Senses output via resistor divider; regulates output to 1.26 V reference; bias current ≤40 nA minimizes divider error. |
| 3 (SHDN) | Active-low enable | Pulls <0.6 V to enter 5 µA shutdown; >0.9 V to operate; hysteresis prevents chatter near threshold. |
| 4 (AGND) | Analog ground reference | Reference for FB, VC, and internal analog circuits; must tie directly to PGND at package for noise isolation. |
| 5–7 (PGND) | Power ground return | Low-inductance return path for switch current; all three pins must be shorted together at PCB for minimal voltage bounce. |
| 8–10 (SW) | Switch node | Drives external inductor; high dv/dt node requiring tight layout; connects to Schottky diode anode in boost topology. |
| 11 (NC) | No connect | Internally unconnected; may be left floating or tied to AGND per layout best practice. |
| 12 (VIN) | Input power supply | Supplies internal bias and switch driver; requires local 10–47 µF low-ESR capacitor placed adjacent to pin. |
| 13 (FSLCT) | Frequency select | GND = 600 kHz; VIN = 1.25 MHz - enables layout reuse across frequency variants without component change. |
| 14 (NC) | No connect (ground recommended) | TI recommends connecting to AGND to reduce noise coupling; not internally connected. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3.6 A / 80 mΩ NMOS switch | Eliminates external MOSFET and gate driver; reduces BOM count and layout area while maintaining 2.5 A continuous output capability. |
| Pin-selectable 600 kHz / 1.25 MHz operation | Enables system-level EMI compliance tuning: lower frequency improves efficiency and eases filtering; higher frequency shrinks inductor size. |
| External compensation (VC pin) | Supports custom pole-zero placement for stable operation with low-ESR ceramic capacitors and varying load conditions. |
| Input UVLO with 100 mV hysteresis | Prevents erratic startup/shutdown behavior below 1.95 V; ensures clean enable/disable transition during battery discharge. |
| Thermal shutdown + 5 µA shutdown current | Protects against sustained overload; ultra-low shutdown IQ extends battery life in always-on portable systems. |
Applications
| Handheld LCD Bias | GSM/CDMA Phone Power |
|---|---|
|
Use Scenario: Generating ±10 V bias rails for TFT-LCD panels in smartphones and PDAs using a 3.3 V or single Li-ion supply. IC Role / Device Role / Timing Role: Step-up DC/DC converter providing regulated high-voltage outputs with fast transient response to backlight dimming commands. Use Value: Delivers 500 mA at 8 V from 3.3 V input with >85% efficiency at 600 kHz, minimizing heat in space-constrained handheld enclosures. |
Use Scenario: Supplying VPA or RF front-end bias in dual-mode GSM/CDMA handsets where input voltage varies from 3.4 V (fresh Li-ion) to 2.8 V (discharged). IC Role / Device Role / Timing Role: High-efficiency boost regulator maintaining stable RF supply despite wide VIN swing and pulsed load profiles. Use Value: Maintains regulation down to 2.2 V input with 2.5 A peak current capability, supporting burst-mode PA operation without brownout. |
| Digital Camera Flash Driver | Portable Medical Display |
|
Use Scenario: Charging high-voltage capacitors for xenon flash modules in compact digital cameras powered by two AA cells (2.4–3.2 V). IC Role / Device Role / Timing Role: Fast-starting boost converter with programmable output up to 17.5 V and low quiescent current in standby. Use Value: Achieves <100 ms start-up to 300 V (via charge pump cascade) with 2.0 mA IQ at 600 kHz, extending battery standby time. |
Use Scenario: Powering monochrome or color LCDs in portable ultrasound or patient monitors where reliability and low noise are critical. IC Role / Device Role / Timing Role: Low-noise, thermally robust DC/DC converter delivering stable bias under variable ambient temperatures (−40°C to +125°C). Use Value: Built-in thermal shutdown and 125°C max junction temperature ensure safe operation in sealed medical enclosures without forced air cooling. |
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 10-A switch, 2.7–12-V input, fixed 500-kHz/2-MHz option, no VC pin - uses internal compensation. | Better suited for >3-A loads and USB-PD sink applications; lacks manual loop tuning for ultra-low-noise designs. | Select when higher output current and simplified layout outweigh need for custom compensation. |
| MAX17062ETA+ | 2.5-A switch, 2.6–5.5-V input only, 1.2-MHz fixed frequency, integrated soft-start, no FSLCT pin. | Optimized for single-cell Li-ion systems with tighter VIN range; not suitable for 9–12 V industrial inputs. | Choose for cost-sensitive, narrow-input portable designs where frequency flexibility is unnecessary. |
Compared with TPS61088RHLR and MAX17062ETA+, the LM2700MTX-ADJ/NOPB uniquely balances pin-selectable frequency, external compensation control, and wide 2.2–12 V input support - making it optimal for multi-rail LCD bias where layout noise immunity and EMI tailoring are critical.
Availability
LM2700MTX-ADJ/NOPB is available at Aetrix Electronics and suitable for handheld devices, portable medical displays, and GSM/CDMA phone power management requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for LM2700MTX-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-efficiency DC/DC conversion and automotive-grade reliability.
The LM2700MTX-ADJ/NOPB belongs to TI's legacy high-current boost converter product line, engineered specifically for LCD bias and portable power applications demanding wide input range, low-noise operation, and robust thermal performance.
FAQ
What is the maximum output voltage achievable with LM2700MTX-ADJ/NOPB?
The LM2700MTX-ADJ/NOPB supports an adjustable output voltage up to 17.5 V, set by an external resistor divider on the FB pin referenced to its 1.26 V internal feedback voltage. This headroom enables use in TFT-LCD VPOS/VNEG generation and white LED driver stages. Operation beyond 17.5 V risks violating absolute maximum SW voltage rating (18 V) and is not guaranteed.
How does the FSLCT pin affect LM2700MTX-ADJ/NOPB performance?
The FSLCT pin selects between 600 kHz (pulled to GND) and 1.25 MHz (pulled to VIN) switching frequencies. At 600 kHz, LM2700MTX-ADJ/NOPB achieves higher efficiency and lower EMI but requires larger inductors; at 1.25 MHz, it enables smaller magnetics and faster transient response at the cost of slightly higher quiescent current (3.0 mA vs. 2.0 mA).
Can LM2700MTX-ADJ/NOPB operate with ceramic output capacitors?
Yes - the LM2700MTX-ADJ/NOPB is explicitly designed for use with low-ESR ceramic output capacitors. Its VC pin allows external RC/CC compensation network tuning to ensure stability across load and temperature variations, avoiding the phase-margin issues common in ceramic-capacitor-based boost converters.
What thermal considerations apply to LM2700MTX-ADJ/NOPB in TSSOP package?
The LM2700MTX-ADJ/NOPB in 14-lead TSSOP has a θJA of 150 °C/W. At 2.5 A output with 80 mΩ RDS(on), power dissipation can exceed 500 mW - requiring adequate copper pour, thermal vias under the exposed pad (if present), and airflow management. Derating is advised above 85°C ambient to maintain <125°C junction temperature.
Is LM2700MTX-ADJ/NOPB pin-compatible with other LM2700 variants?
Yes - all LM2700 variants (including LM2700MTX-ADJ/NOPB, LM2700LD-ADJ/NOPB, and fixed-output versions) share identical 14-pin TSSOP and WSON footprints and pinouts. The "MTX" suffix denotes the TSSOP package; "LD" denotes WSON. Functionally identical, they differ only in thermal performance (θJA = 150 °C/W vs. 45 °C/W) and package dimensions.
LM2700MTX-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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
LM2700MTX-ADJ/NOPB FAQ
1.How can I place an order for LM2700MTX-ADJ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2700MTX-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 LM2700MTX-ADJ/NOPB reliable?
The price and inventory of LM2700MTX-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 LM2700MTX-ADJ/NOPB is usually 5 days.
3.What payment methods are accepted for LM2700MTX-ADJ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2700MTX-ADJ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2700MTX-ADJ/NOPB?
LM2700MTX-ADJ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2700MTX-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 LM2700MTX-ADJ/NOPB?
For technical support, including LM2700MTX-ADJ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2700MTX-ADJ/NOPB requirements.
6.How does Aetrix verify that LM2700MTX-ADJ/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2700MTX-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 LM2700MTX-ADJ/NOPB meets industry standards.
7.What is the process for return or replacement of LM2700MTX-ADJ/NOPB?
All LM2700MTX-ADJ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2700MTX-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 LM2700MTX-ADJ/NOPB part is unused and in its original packaging.
Return procedure for LM2700MTX-ADJ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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