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Texas Instruments LM2614ATL/NOPB
- Part No.:
- LM2614ATL/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 10-WFBGA, DSBGA
- Datasheet:
-
LM2614ATL/NOPB.pdf
- Description:
- IC REG CONV RF PWR 1OUT 10TUSMD
- Quantity:
- Payment:
- Shipping:
Inventory:2,219
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Product details
Overview
LM2614ATL/NOPB from Texas Instruments is a 400mA, 600kHz synchronous buck DC-DC converter in a 10-bump thin DSBGA package, optimized for RF power amplifier supply in mobile phones and handheld radios. It delivers adjustable output (1.0V–3.6V) from a single Li-ion cell (2.8V–5.5V), features ±1% feedback voltage precision, 96% peak efficiency at 200mA/3.6VOUT, and supports dynamic VCON-based voltage scaling in <30µs.
For engineers reviewing the LM2614ATL/NOPB datasheet, LM2614ATL/NOPB pinout, LM2614ATL/NOPB application, or LM2614ATL/NOPB equivalent, key selection considerations include its dual PWM/PFM mode operation, SYNC/MODE-controlled frequency synchronization (500kHz–1MHz), internal soft-start, thermal shutdown, and current-limit protection-critical for battery-powered RF PA biasing where low-noise switching and rapid load transient response are required.
Technical Context
The LM2614ATL/NOPB implements a current-mode buck architecture with internal synchronous rectification using integrated PFET and NFET switches. Its 600kHz fixed-frequency PWM mode minimizes RF interference, while hysteretic PFM mode reduces quiescent current to 160µA (typ) during standby. The device uses external compensation via EANEG/EAOUT pins to stabilize loop response across varying loads and output voltages.
Operating mode is digitally controlled via the SYNC/MODE pin: high for PWM, low for PFM, or driven by an external 500kHz–1MHz clock for synchronized PWM. Output voltage is dynamically adjusted via analog VCON input applied to external resistor dividers, enabling real-time PA supply optimization without changing feedback network components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.8V to 5.5V - supports direct operation from single Li-ion cell without pre-regulation. |
| Output Voltage Range | 1.0V to 3.6V - programmable via external resistors + VCON analog control for PA efficiency tuning. |
| Max Load Current | 400mA (ATL grade) - sufficient for mid-power RF PAs in mobile handsets and PC cards. |
| Feedback Voltage Precision | ±1% (1.485V–1.515V) - ensures tight output regulation critical for PA linearity and gain stability. |
| Switching Frequency | 600kHz (PWM mode, typ) - enables use of miniature inductors and ceramic capacitors (<1µH, <22µF). |
| Quiescent Current | 600µA (PWM), 160µA (PFM), 0.02µA (shutdown) - extends battery life across active/standby/idle states. |
| Efficiency | 96% (typ at 3.9VIN/3.6VOUT/200mA) - achieved via synchronous rectification and low RDS(ON) (395mΩ P-FET, 330mΩ N-FET). |
Pinout & Package
LM2614ATL/NOPB is housed in a 10-bump thin DSBGA package (1.5mm × 1.5mm, 0.5mm pitch), optimized for ultra-compact RF front-end layouts. Board area requirement is only 375mm² (0.58in²), with fine-pitch bump layout requiring precision assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | FB | Feedback analog input - connects to resistor divider to set regulated output voltage; ±1% reference accuracy anchors regulation. |
| B1 | EANEG | Inverting input of error amplifier - used with EAOUT for external compensation network to stabilize control loop. |
| C1 | EAOUT | Error amplifier output - drives external RC compensation network to tailor bandwidth and phase margin. |
| D1 | SYNC/MODE | Digital mode select/synchronization input - sets PWM (high), PFM (low), or syncs to external 500kHz–1MHz clock. |
| D2 | EN | Enable input with Schmitt trigger - controls startup/shutdown; low = 0.02µA shutdown, high = normal operation with soft-start. |
| D3 | PGND | Power ground - separate return path for high-current switch node (SW) and inductor to minimize noise coupling. |
| C3 | SW | Switching node - connects to inductor; carries pulsed current from internal PFET and synchronous NFET. |
| B3 | PVIN | Power input to PFET switch - routed separately from VDD to reduce noise injection into analog circuitry. |
| A3 | VDD | Analog supply input - powers internal reference, error amp, and logic; recommended 0.1µF bypass capacitor. |
| A2 | SGND | Analog and control ground - isolated from PGND to prevent switching noise from corrupting feedback and control signals. |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic VCON voltage scaling | Adjusts output from 1.0V to 3.6V in <30µs - enables real-time PA supply matching to transmit power level, extending battery runtime. |
| Triple operating modes | PWM (low-noise, full-load), PFM (ultra-low IQ standby), and shutdown (0.02µA) - selectable via single digital pin for intelligent power management. |
| Internal synchronous rectification | Integrated NFET replaces external Schottky diode - eliminates forward voltage drop, boosting efficiency especially at low VOUT. |
| Overvoltage protection (OVP) | Activates when output exceeds regulation threshold by ~100mV - prevents PA damage during light-load PWM operation. |
| Current limit & thermal shutdown | 690mA peak switch current limit (typ), 150°C thermal cutoff - protects IC and system under overload or poor heatsinking conditions. |
Applications
| Mobile Phone RF Power Amplifier | Hand-Held Radio Transmitter |
|---|---|
|
Use Scenario: Supplies bias voltage to GaAs or SiGe RF power amplifier in GSM/UMTS/LTE handset during transmission bursts. IC Role / Device Role / Timing Role: Primary step-down regulator delivering dynamically scaled 1.8V–3.3V PA supply synchronized to TX enable signal. Use Value: Enables >96% efficiency at 200mA and <30µs VOUT slew supports rapid PA power ramp-up, minimizing transmit latency and battery drain. |
Use Scenario: Powers Class AB RF PA in portable two-way radio operating from 3.6V Li-ion battery. IC Role / Device Role / Timing Role: High-efficiency, low-EMI DC-DC source with PFM mode for standby and PWM for active transmit. Use Value: 160µA PFM quiescent current extends talk time; 600kHz PWM avoids IF band interference; 10-bump DSBGA fits constrained PCB space. |
| RF PC Card Power Supply | Battery-Powered IoT Sensor Node with RF Transceiver |
|
Use Scenario: Provides clean, adjustable 2.5V supply to RF front-end IC in mini-PCI Express wireless card. IC Role / Device Role / Timing Role: Compact, low-noise buck converter with SYNC input for frequency alignment to host system clock domain. Use Value: 500kHz–1MHz synchronization eliminates beat frequencies with host processor clocks; small 1.5mm × 1.5mm footprint saves board area. |
Use Scenario: Powers sub-GHz or 2.4GHz transceiver (e.g., CC1310/CC2650) in energy-harvesting or coin-cell IoT sensor node. IC Role / Device Role / Timing Role: Ultra-low-IQ PFM regulator during sleep, fast-wake PWM mode during packet transmission. Use Value: 0.02µA shutdown and 160µA PFM current maximize multi-year battery life; 1.0V–3.6V adjustability matches transceiver VDD requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DC-DC converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRVR | 3MHz switching frequency, 300mA max, 2.05V–6.5V input, fixed 1.8V/2.5V/3.3V outputs - no VCON or SYNC/MODE pin. | Lacks dynamic output adjustment and mode-select flexibility; suited for simpler, fixed-voltage point-of-load rails. | Choose when compact size and high frequency are priorities but PA-level dynamic control is unnecessary. |
| TPS62740DSSR | Ultra-low IQ (360nA in shutdown, 250nA in hibernation), 200mA, 1.8V–3.6V input, 1.8V–3.3V output - no PFM/PWM mode toggle or SYNC. | Optimized for multi-year coin-cell operation, not RF PA burst loads; lacks current capability and fast transient response. | Prefer for always-on sensor nodes where nanowatt shutdown dominates over RF performance. |
Compared with TPS62231DRVR and TPS62740DSSR, the LM2614ATL/NOPB uniquely combines 400mA current delivery, analog VCON control, digital mode selection, and RF-optimized 600kHz PWM - making it irreplaceable for applications demanding real-time PA voltage scaling and low-EMI operation from a Li-ion cell.
Availability
LM2614ATL/NOPB is available at Aetrix Electronics and suitable for mobile phone RF power amplifiers, handheld radio transmitters, RF PC cards, and battery-powered IoT sensor nodes requiring stable component supply across design-in, prototyping, and production phases.
Supply support for LM2614ATL/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 connectivity technologies, with decades of expertise in power management ICs for portable and RF systems.
The LM2614ATL/NOPB belongs to TI's RF-optimized DC-DC converter product line, designed specifically to deliver clean, dynamically adjustable bias to RF power amplifiers in space-constrained, battery-powered wireless devices.
FAQ
What is the maximum output current capability of the LM2614ATL/NOPB?
The LM2614ATL/NOPB delivers up to 400mA in PWM mode under typical conditions (e.g., 3.6V input, 3.6V output). This rating applies specifically to the ATL grade; the B-grade variant (LM2614BTL) is rated for 300mA. Peak switch current limit is 690mA (typ), with thermal shutdown engaging above 150°C junction temperature to protect the device.
How does the LM2614ATL/NOPB support dynamic output voltage adjustment?
The LM2614ATL/NOPB supports dynamic output voltage adjustment via the VCON analog input applied to external feedback resistors. By varying VCON from 0V to 1.85V, the output can be scaled continuously from 1.0V to 3.6V in under 30µs - a feature essential for optimizing RF PA efficiency across varying transmit power levels without changing hardware.
What are the three operating modes of the LM2614ATL/NOPB and how are they selected?
The LM2614ATL/NOPB offers PWM (low-noise, full-load), PFM (low-quiescent-current standby), and shutdown (0.02µA) modes. Selection is controlled solely by the SYNC/MODE pin: high (>1.3V) enables 600kHz PWM, low (<0.4V) activates PFM, and an external 500kHz–1MHz clock synchronizes PWM operation - all without external mode-control logic.
Does the LM2614ATL/NOPB require external diodes or MOSFETs for operation?
No. The LM2614ATL/NOPB integrates both a PFET high-side switch and an NFET synchronous rectifier, eliminating the need for external diodes or MOSFETs. Internal synchronous rectification improves efficiency - especially at low output voltages - and simplifies bill-of-materials and PCB layout compared to asynchronous buck converters.
What package type and dimensions does the LM2614ATL/NOPB use?
The LM2614ATL/NOPB uses a 10-bump thin DSBGA package measuring 1.5mm × 1.5mm with 0.5mm bump pitch. This chip-scale package provides the smallest possible footprint (375mm² board area) for space-critical applications like mobile phones, but requires precision PCB layout and assembly due to its fine-pitch interconnects.
LM2614ATL/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-WFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Converter, RF Power Amplifier
- Voltage - Input:
- 2.8V ~ 5.5V
- Number of Outputs:
- 1
- Voltage - Output:
- 1V ~ 3.6V
- Operating Temperature:
- -25°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TµSMD (2.25x2.5)
LM2614ATL/NOPB FAQ
1.How can I place an order for LM2614ATL/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM2614ATL/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 LM2614ATL/NOPB reliable?
The price and inventory of LM2614ATL/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM2614ATL/NOPB is usually 5 days.
3.What payment methods are accepted for LM2614ATL/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM2614ATL/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM2614ATL/NOPB?
LM2614ATL/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM2614ATL/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 LM2614ATL/NOPB?
For technical support, including LM2614ATL/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM2614ATL/NOPB requirements.
6.How does Aetrix verify that LM2614ATL/NOPB is sourced from the original manufacturer or authorized distributors?
All LM2614ATL/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 LM2614ATL/NOPB meets industry standards.
7.What is the process for return or replacement of LM2614ATL/NOPB?
All LM2614ATL/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM2614ATL/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 LM2614ATL/NOPB part is unused and in its original packaging.
Return procedure for LM2614ATL/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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