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AC/DC- und DC/DC-Wandler (integrierter FET)

TPS61256A

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3,5-MHz-, 5-V-, 1-A-Lastaufwärtswandler in 1,2-mm x 1,3-mm-WCSP

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TPS61256A

AKTIV
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Produktdetails

Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 2.5 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 3500 Switching frequency (max) (kHz) 3500 Features Enable, Light Load Efficiency, Load Disconnect, Synchronous Rectification Vout (min) (V) 5 Vout (max) (V) 5 Iq (typ) (µA) 33 Duty cycle (max) (%) 90 Switch current limit (typ) (A) 2.4
Rating Catalog Operating temperature range (°C) -40 to 125 Topology Boost Type Converter Vin (min) (V) 2.5 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 3500 Switching frequency (max) (kHz) 3500 Features Enable, Light Load Efficiency, Load Disconnect, Synchronous Rectification Vout (min) (V) 5 Vout (max) (V) 5 Iq (typ) (µA) 33 Duty cycle (max) (%) 90 Switch current limit (typ) (A) 2.4
DSBGA (YFF) 9 1.96000000000000028000000000000001 mm² 1.4000000000000001 x 1.4000000000000001
  • 93% Efficiency at 3.5MHz Operation
  • 36µA Quiescent Current
  • Wide VIN Range From 2.5V to 5.5V
  • IOUT ≥1000mA at VOUT = 5.0V, VIN ≥3.3V
  • ±2% Total DC Voltage Accuracy
  • Light-Load PFM Mode
  • True Load Disconnect During Shutdown
  • Thermal Shutdown and Overload Protection
  • Only Three Surface-Mount External Components Required
  • Total Solution Size <35mm2
  • 9-Pin NanoFreeTM (CSP) Packaging
  • 93% Efficiency at 3.5MHz Operation
  • 36µA Quiescent Current
  • Wide VIN Range From 2.5V to 5.5V
  • IOUT ≥1000mA at VOUT = 5.0V, VIN ≥3.3V
  • ±2% Total DC Voltage Accuracy
  • Light-Load PFM Mode
  • True Load Disconnect During Shutdown
  • Thermal Shutdown and Overload Protection
  • Only Three Surface-Mount External Components Required
  • Total Solution Size <35mm2
  • 9-Pin NanoFreeTM (CSP) Packaging

The TPS61256A device provides a power supply solution for battery-powered portable applications. Intended for low-power applications, the TPS61256A supports up to 800-mA load current from a battery discharged as low as 2.7V and allows the use of low cost chip inductor and capacitors.

With a wide input voltage range of 2.5V to 5.5V, the device supports applications powered by Li-Ion batteries with extended voltage range and delivers a fixed 5.0V output voltage.

The TPS61256A operates at a regulated 3.5-MHz switching frequency and enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range. The PFM mode extends the battery life by reducing the quiescent current to 36µA (typ) during light load operation. Input current in shutdown mode is less than 5µA, which maximizes battery life.

The TPS61256A offers a very small solution size due to minimum amount of external components. It allows the use of small inductors and input capacitors to achieve a small solution size. During shutdown, the load is completely disconnected from the battery.

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.

The TPS61256A device provides a power supply solution for battery-powered portable applications. Intended for low-power applications, the TPS61256A supports up to 800-mA load current from a battery discharged as low as 2.7V and allows the use of low cost chip inductor and capacitors.

With a wide input voltage range of 2.5V to 5.5V, the device supports applications powered by Li-Ion batteries with extended voltage range and delivers a fixed 5.0V output voltage.

The TPS61256A operates at a regulated 3.5-MHz switching frequency and enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range. The PFM mode extends the battery life by reducing the quiescent current to 36µA (typ) during light load operation. Input current in shutdown mode is less than 5µA, which maximizes battery life.

The TPS61256A offers a very small solution size due to minimum amount of external components. It allows the use of small inductors and input capacitors to achieve a small solution size. During shutdown, the load is completely disconnected from the battery.

These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS61256A 3.5-MHz HIGH EFFICIENCY STEP-UP CONVERTER FEATURING 2.3A CURRENT LIMIT IN CHIP SCALE PACKAGING datasheet (Rev. A) PDF | HTML 05 Feb 2018

Design und Entwicklung

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Evaluierungsplatine

TPS61256EVM-711 — Evaluierungsmodul für TPS61256, winziger Aufwärtswandler mit Eingangsstrombegrenzung und Bypas

The TPS6125XEVM-711 enables test and evaluation of the Texas Instruments' TPS61254 and TPS61256 (TPS6125x) devices, a series of 3.5-MHz, up to 5.5-V, step-up dc-dc converters. This user's guide includes EVM specifications, the schematic diagram, bill of materials, and board layout. The TPS6125x (...)

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