Texas Instruments LM251772-Q1 Product Info

Parameters

Rating	Automotive
Topology	Buck-Boost
Vin (max) (V)	36
Vin (min) (V)	3.5
Vout (max) (V)	36
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, Synchronous rectification, Tracking, USB C/PD compatible, UVLO adjustable
EMI features	Frequency Dithering, Spread Spectrum
Duty cycle (max) (%)	100
Iq (typ) (A)	0.00006
TI functional safety category	Functional Safety-Capable
Operating temperature range (°C)	-40 to 150

Package

VQFN (RHA)-40-36 mm² 6 x 6

Features

Input range from 3.5V to 36V
Dynamical Vo programming using I2C from:
- 3.3V up to in 20mV monotonous steps
- 1V up to 23V 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
Drive (DRV) pin for dual role port power path
- Push-Pull output for fast pMOS FET control
- Configurable as charge pump driver stage for nMOS FET
Operation mode selection for high efficiency in light load and high load conditions:
- Power save mode (Single Pulse/µSleep)
- Automatic conduction mode
Integrated high voltage supply LDO
Auxiliary high voltage LDO for microcontroller supply
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 2200kHz
- External clock synchronization and clock output
Spread spectrum operation selectable
Average input or output current sensor
- Programmable from 0.5A to 7A in 50mA steps
I2C programmable with diagnostics
Automotive temperature range (Tj = -40°C to 150°C)
40-Pin WSON package with wettable flanks
Functional Safety-Capable
- Documentation available to aid functional safety
Create a custom design using the LM251772-Q1 with the WEBENCH® Power Designer

Input range from 3.5V to 36V
Dynamical Vo programming using I2C from:
- 3.3V up to in 20mV monotonous steps
- 1V up to 23V 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
Drive (DRV) pin for dual role port power path
- Push-Pull output for fast pMOS FET control
- Configurable as charge pump driver stage for nMOS FET
Operation mode selection for high efficiency in light load and high load conditions:
- Power save mode (Single Pulse/µSleep)
- Automatic conduction mode
Integrated high voltage supply LDO
Auxiliary high voltage LDO for microcontroller supply
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 2200kHz
- External clock synchronization and clock output
Spread spectrum operation selectable
Average input or output current sensor
- Programmable from 0.5A to 7A in 50mA steps
I2C programmable with diagnostics
Automotive temperature range (Tj = -40°C to 150°C)
40-Pin WSON package with wettable flanks
Functional Safety-Capable
- Documentation available to aid functional safety
Create a custom design using the LM251772-Q1 with the WEBENCH® Power Designer

Description

The LM251772-Q1 is a four switch Buck-Boost controller. The device 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 output voltage and average current is dynamically programmable using the integrated I2C interface. The configuration range for output voltage and average current meets the USB-PD standard requirements. The integrated DRV pin is used to control an optional disconnect FET if the system is targeted to support dual role port (DRP) requirements.

LM251772-Q1 runs at a fixed switching frequency, which is set using the RT/SYNC pin. The switching frequency remains the same during buck, boost and buck-boost operation. The device maintains small mode transition ripple over all operating modes.

The LM251772-Q1 is a four switch Buck-Boost controller. The device 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 output voltage and average current is dynamically programmable using the integrated I2C interface. The configuration range for output voltage and average current meets the USB-PD standard requirements. The integrated DRV pin is used to control an optional disconnect FET if the system is targeted to support dual role port (DRP) requirements.

LM251772-Q1 runs at a fixed switching frequency, which is set using the RT/SYNC pin. The switching frequency remains the same during buck, boost and buck-boost operation. The device maintains small mode transition ripple over all operating modes.

ELECTRONIC COMPONENTS
All In One Distributor

LM251772-Q1

Automotive, 36V, 4-switch buck-boost controller with I2C interface for USB-PD

Texas Instruments LM251772-Q1 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS All In One Distributor

LM251772-Q1

Automotive, 36V, 4-switch buck-boost controller with I2C interface for USB-PD

Texas Instruments LM251772-Q1 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS
All In One Distributor