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LM3263

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High-Current Step-Down DC/DC Converter with MIPI® RF Front-End Interface

Product details

Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0.4 Vout (max) (V) 3.6 Iout (max) (A) 2.5 Iq (typ) (mA) 0.36 Switching frequency (min) (kHz) 2430 Switching frequency (max) (kHz) 2970 Features Fixed Output Operating temperature range (°C) -30 to 90 Rating Catalog Regulated outputs (#) 1 Control mode Voltage mode Duty cycle (max) (%) 100 Type Converter
Vin (min) (V) 2.7 Vin (max) (V) 5.5 Vout (min) (V) 0.4 Vout (max) (V) 3.6 Iout (max) (A) 2.5 Iq (typ) (mA) 0.36 Switching frequency (min) (kHz) 2430 Switching frequency (max) (kHz) 2970 Features Fixed Output Operating temperature range (°C) -30 to 90 Rating Catalog Regulated outputs (#) 1 Control mode Voltage mode Duty cycle (max) (%) 100 Type Converter
DSBGA (YFQ) 16 3.24 mm² 1.8 x 1.8
  • MIPI RFFE Digital Control Interface
  • Operates from a Single Li-Ion Cell: 2.7 V to 5.5 V
  • Dynamically Adjustable Output Voltage: 0.4 V to 3.6 V (Typical) in PFM and PWM Modes
  • High-Efficiency PFM and PWM Modes With Internal Seamless Transition
  • 2.5-A Maximum Load Current in PWM Mode
  • 2.7 MHz (Typical) Switching Frequency
  • ACB (Reduces Inductor Requirements and Size)
  • Internal Compensation
  • Current and Thermal Overload Protection
  • Very Small Solution Size: Approximately 9.1 mm2
  • MIPI RFFE Digital Control Interface
  • Operates from a Single Li-Ion Cell: 2.7 V to 5.5 V
  • Dynamically Adjustable Output Voltage: 0.4 V to 3.6 V (Typical) in PFM and PWM Modes
  • High-Efficiency PFM and PWM Modes With Internal Seamless Transition
  • 2.5-A Maximum Load Current in PWM Mode
  • 2.7 MHz (Typical) Switching Frequency
  • ACB (Reduces Inductor Requirements and Size)
  • Internal Compensation
  • Current and Thermal Overload Protection
  • Very Small Solution Size: Approximately 9.1 mm2

The LM3263 is a DC-DC converter optimized for powering multi-mode multi-band RF power amplifiers (PAs) from a single lithium-ion cell. The LM3263 steps down an input voltage from 2.7 V to 5.5 V to a dynamically adjustable output voltage of 0.4 V to 3.6 V. The output voltage is externally programmed through the RFFE Digital Control Interface and is set to ensure efficient operation at all power levels of the RF PA.

When operating in pulse width modulated (PWM) mode, the LM3263 produces a small and predictable amount of output voltage ripple thus meeting the power and stringent spectral-compliance needs of RF PAs with minimal filtering and minimal excess headroom. When operating in PFM mode, the LM3263 enables the lowest current consumption across PA output power level settings and therefore maximizes system efficiency.

The LM3263 has a unique ctive urrent assist and analog ypass (ACB) feature to minimize inductor size without any loss of output regulation for the entire battery voltage and RF output power range, until dropout. ACB provides a parallel current path, when needed, to limit the maximum inductor current to 1.45 A (typical) while still driving a 2.5-A load. The ACB feature also enables operation with minimal dropout voltage.

For all available packages, see the orderable addendum at the end of the data sheet.

The LM3263 is a DC-DC converter optimized for powering multi-mode multi-band RF power amplifiers (PAs) from a single lithium-ion cell. The LM3263 steps down an input voltage from 2.7 V to 5.5 V to a dynamically adjustable output voltage of 0.4 V to 3.6 V. The output voltage is externally programmed through the RFFE Digital Control Interface and is set to ensure efficient operation at all power levels of the RF PA.

When operating in pulse width modulated (PWM) mode, the LM3263 produces a small and predictable amount of output voltage ripple thus meeting the power and stringent spectral-compliance needs of RF PAs with minimal filtering and minimal excess headroom. When operating in PFM mode, the LM3263 enables the lowest current consumption across PA output power level settings and therefore maximizes system efficiency.

The LM3263 has a unique ctive urrent assist and analog ypass (ACB) feature to minimize inductor size without any loss of output regulation for the entire battery voltage and RF output power range, until dropout. ACB provides a parallel current path, when needed, to limit the maximum inductor current to 1.45 A (typical) while still driving a 2.5-A load. The ACB feature also enables operation with minimal dropout voltage.

For all available packages, see the orderable addendum at the end of the data sheet.

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Technical documentation

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* Data sheet LM3263 High-Current Step-Down DC-DC Converter With MIPI® RF Front-End Control Interface for RF Power Amplifiers datasheet (Rev. B) PDF | HTML 14 Apr 2016
User guide LM3263 DSBGA Evaluation Module 24 Jun 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM3263EVM — LM3263EVM DC/DC Converter with MIPI® RFFE Interface Evaluation Module for RF Power Amplifiers

LM3263EVM - step down DC/DC Converter with MIPI® RFFE Interface Evaluation Module

The LM3263 evaluation module (EVM) helps designers evaluate the performance of a RF step-down DC/DC converter with MIPI® RF Front-End Control Interface for multi-mode multi-band RF Power Amplifiers.
User guide: PDF
Not available on TI.com
GUI for evaluation module (EVM)

SNVC068 LM3263EVM GUI Software

Supported products & hardware

Supported products & hardware

Products
Buck converters (integrated switch)
LM3263 High-Current Step-Down DC/DC Converter with MIPI® RF Front-End Interface
Hardware development
Evaluation board
LM3263EVM LM3263EVM DC/DC Converter with MIPI® RFFE Interface Evaluation Module for RF Power Amplifiers
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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DSBGA (YFQ) 16 View options

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