LM2773

AKTIV

Spread-Spectrum-geschalteter Kondensator-Abwärtsregler mit 1,8 V/1,6 V und niedriger Welligkeit

Produktdetails

Iout (max) (A) 0.3 Vin (min) (V) 2.5 Vin (max) (V) 5.5 Type Charge pump Switching frequency (min) (kHz) 1150 Switching frequency (max) (kHz) 1150 Features Enable Vout (min) (V) 1.6 Vout (max) (V) 1.8 Rating Catalog Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.000048
Iout (max) (A) 0.3 Vin (min) (V) 2.5 Vin (max) (V) 5.5 Type Charge pump Switching frequency (min) (kHz) 1150 Switching frequency (max) (kHz) 1150 Features Enable Vout (min) (V) 1.6 Vout (max) (V) 1.8 Rating Catalog Operating temperature range (°C) -30 to 85 Iq (typ) (A) 0.000048
DSBGA (YZR) 9 3.0625 mm² 1.75 x 1.75
  • Low-Noise Spread Spectrum Operation
  • 1.8V/1.6V Selectable Output Voltage
  • 2% Output Voltage Regulation
  • > 75% Efficiency in 1.8V Mode
  • Very Low Output Ripple: 10mV @ 300mA
  • Output Currents up to 300mA
  • 2.5V to 5.5V Input Voltage Range
  • Shutdown Disconnects Load from VIN
  • 1.15MHz Switching Frequency
  • No Inductors…Small Solution Size
  • Short Circuit and Thermal Protection
  • 0.5mm pitch, DSBGA-9 (1.511 × 1.511mm × 0.6mm)

All trademarks are the property of their respective owners.

  • Low-Noise Spread Spectrum Operation
  • 1.8V/1.6V Selectable Output Voltage
  • 2% Output Voltage Regulation
  • > 75% Efficiency in 1.8V Mode
  • Very Low Output Ripple: 10mV @ 300mA
  • Output Currents up to 300mA
  • 2.5V to 5.5V Input Voltage Range
  • Shutdown Disconnects Load from VIN
  • 1.15MHz Switching Frequency
  • No Inductors…Small Solution Size
  • Short Circuit and Thermal Protection
  • 0.5mm pitch, DSBGA-9 (1.511 × 1.511mm × 0.6mm)

All trademarks are the property of their respective owners.

The LM2773 is a switched capacitor step-down regulator that produces a selectable 1.8V or 1.6V output. It is capable of supplying loads up to 300mA. The LM2773 operates with an input voltage from 2.5V to 5.5V, accommodating 1-cell Li-Ion batteries and chargers.

The LM2773 utilizes a regulated charge pump with gains of 2/3x and 1x. It has very low ripple and noise on both the input and output due to its pre-regulated 1.15MHz (typ.) switching frequency and spread spectrum operation. When output currents are low, the LM2773 automatically switches to a low-ripple PFM regulation mode to maintain high efficiency over the entire load range.

The LM2773 is available in TI's 0.5mm pitch 9-bump DSBGA.

The LM2773 is a switched capacitor step-down regulator that produces a selectable 1.8V or 1.6V output. It is capable of supplying loads up to 300mA. The LM2773 operates with an input voltage from 2.5V to 5.5V, accommodating 1-cell Li-Ion batteries and chargers.

The LM2773 utilizes a regulated charge pump with gains of 2/3x and 1x. It has very low ripple and noise on both the input and output due to its pre-regulated 1.15MHz (typ.) switching frequency and spread spectrum operation. When output currents are low, the LM2773 automatically switches to a low-ripple PFM regulation mode to maintain high efficiency over the entire load range.

The LM2773 is available in TI's 0.5mm pitch 9-bump DSBGA.

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Typ Titel Datum
* Data sheet Low-Ripple 1.8V/1.6V Spread-Spectrum Switched Capacitor Step-Down Regulator datasheet (Rev. A) 01 Mai 2013
Selection guide Power Management Guide 2018 (Rev. R) 25 Jun 2018
EVM User's guide AN-1769 LM2773 Evaluation Board (Rev. A) 30 Apr 2013

Design und Entwicklung

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