LM2773

ACTIVE

Low-Ripple 1.8V/1.6V Spread-Spectrum Switched Capacitor Step-Down Regulator

Product details

Rating Catalog Operating temperature range (°C) -30 to 85 Type Charge pump Iout (max) (A) 0.3 Vin (min) (V) 2.5 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1150 Switching frequency (max) (kHz) 1150 Features Enable, Regulated Vout (min) (V) 1.6 Vout (max) (V) 1.8 Iq (typ) (µA) 48
Rating Catalog Operating temperature range (°C) -30 to 85 Type Charge pump Iout (max) (A) 0.3 Vin (min) (V) 2.5 Vin (max) (V) 5.5 Switching frequency (min) (kHz) 1150 Switching frequency (max) (kHz) 1150 Features Enable, Regulated Vout (min) (V) 1.6 Vout (max) (V) 1.8 Iq (typ) (µA) 48
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)

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  • 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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Technical documentation

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Type Title Date
* Data sheet Low-Ripple 1.8V/1.6V Spread-Spectrum Switched Capacitor Step-Down Regulator datasheet (Rev. A) 01 May 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

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DSBGA (YZR) 9 Ultra Librarian

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