Texas Instruments LM51772 Product Info

Parameters

Rating	Catalog
Topology	Buck-Boost
Vin (max) (V)	55
Vin (min) (V)	3.5
Vout (max) (V)	55
Vout (min) (V)	3.3
Features	Adjustable current limit, Dynamic voltage scaling, Enable, Extended power range, Frequency synchronization, I2C, Light-load efficiency, Load Disconnect, Power good, Spread Spectrum, Synchronous rectification, Tracking, USB C/PD compatible, UVLO adjustable
EMI features	Frequency Dithering, Spread Spectrum
Duty cycle (max) (%)	100
Iq (typ) (A)	0.00006
Operating temperature range (°C)	-40 to 125

Package

VQFN (RHA)-40-36 mm² 6 x 6

Features

Input range from 0V (V(BIAS) ≥ 3.5V) to 55V
Output voltage 1V to 55V
Dynamical Vo programming via I2C from:
- 3.3V up to 48V in 20mV monotonous steps
- 1V up to 24V in 10mV monotonous steps
Peak current regulation control
Small voltage transition ripple overall operating modes
Dynamic output voltage tracking (digital PWM tracking input, analog tracking input)
- Via I2C interface programming
Shut down quiescent current 3µA
Operating quiescent current 60µA
DRV pin for external FET control
Operation mode selection for high efficiency in light load and high load conditions:
- Power save mode (Single Pulse/µSleep)
- Automatic/programmable conduction mode
Integrated high voltage supply LDO
Auxiliary high voltage LDO/reference
Integrated full-bridge gate drive
- 2A peak current capability
- Bootstrap over and under-voltage protection
- Integrated boot-strap diode
Fixed frequency independent from operating mode (boost, buck-boost, buck)
- Forced PWM mode selectable
- Switching frequency from 100kHz to 2.2MHz
- External clock synchronization and clock output
Spread spectrum operation selectable
Average input or output current sensor
- Programmable from 0.5A (5mV) to 7A (70mV) in 50mA (500µV) steps
- ISET pin selectable
I2C Interface readout of monitoring features
Create a custom design using the LM51772 with the WEBENCH® Power Designer

Input range from 0V (V(BIAS) ≥ 3.5V) to 55V
Output voltage 1V to 55V
Dynamical Vo programming via I2C from:
- 3.3V up to 48V in 20mV monotonous steps
- 1V up to 24V in 10mV monotonous steps
Peak current regulation control
Small voltage transition ripple overall operating modes
Dynamic output voltage tracking (digital PWM tracking input, analog tracking input)
- Via I2C interface programming
Shut down quiescent current 3µA
Operating quiescent current 60µA
DRV pin for external FET control
Operation mode selection for high efficiency in light load and high load conditions:
- Power save mode (Single Pulse/µSleep)
- Automatic/programmable conduction mode
Integrated high voltage supply LDO
Auxiliary high voltage LDO/reference
Integrated full-bridge gate drive
- 2A peak current capability
- Bootstrap over and under-voltage protection
- Integrated boot-strap diode
Fixed frequency independent from operating mode (boost, buck-boost, buck)
- Forced PWM mode selectable
- Switching frequency from 100kHz to 2.2MHz
- External clock synchronization and clock output
Spread spectrum operation selectable
Average input or output current sensor
- Programmable from 0.5A (5mV) to 7A (70mV) in 50mA (500µV) steps
- ISET pin selectable
I2C Interface readout of monitoring features
Create a custom design using the LM51772 with the WEBENCH® Power Designer

Description

The LM51772 is a four switch buck-boost controller that provides a regulated output voltage if the input voltage is higher, equal, or lower than the adjusted output voltage. In power save mode, the device supports very high efficiency over the complete operation range of the output. The LM51772 runs at a fixed switching frequency, which can be set via the RT/SYNC pin. The switching frequency remains constant during buck, boost and buck-boost operation in forced PWM. The external compensation pin allows very fast transient response for different applications. The device maintains small mode transition ripple overall operating modes. The output voltage and device configurations can be dynamically programmed via the integrated I2C interface. The integrated and optional high-side current sensor features an accurate output or input current limitation. The average current limit of the LM51772 is also configurable through the I2C interface.

ELECTRONIC COMPONENTS
All In One Distributor

LM51772

55V wide VIN four-switch buck-boost controller with I2C interface

Texas Instruments LM51772 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS All In One Distributor

LM51772

55V wide VIN four-switch buck-boost controller with I2C interface

Texas Instruments LM51772 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS
All In One Distributor