Texas Instruments LM5125A-Q1 Product Info

Parameters

Rating	Automotive
Topology	Boost Controller
Vin (max) (V)	45
Vin (min) (V)	2.5
Vout (max) (V)	60
Vout (min) (V)	6
Control mode	current mode control
Features	Adjustable current limit, Adjustable soft start, Adjustable switching frequency, Analog current monitor, Automatic Light Load Management, Automotive load dump, Bypass Mode, Chip-enable control pin, Cycle-by-cycle overcurrent protection, External Sync, Fixed PWM Mode, Multiphase, Overcurrent protection with adjustable delay, Power good, Programmable dead time, Spread Spectrum, Tracking
EMI features	Frequency Dithering, Spread Spectrum
Duty cycle (max) (%)	99.2
Iq (typ) (A)	0.00025
TI functional safety category	Functional Safety-Capable
Operating temperature range (°C)	-40 to 150

Package

VQFN (RHB)-32-25 mm² 5 x 5

Features

AEC-Q100 qualified for automotive applications
- Temperature grade 1: TA = –40°C to +125°C
Functional Safety-Capable
- Documentation available to aid functional safety system design
Input voltage 4.5V to 42V
- Minimum 2.5V for V(BIAS) ≥ 4.5V or VOUT ≥ 6V
Output Voltage 6V to 60V
- 2% accuracy, internal feedback resistors
- Bypass operation for VI > VOUT
- Dynamic output voltage tracking
  - Digital PWM tracking (DTRK)
  - Analog tracking (ATRK)
- Overvoltage protection (64V, 50V, 35V, 28.5V)
Low shutdown IQ of 2µA
Low operating IQ of 1.4mA
Stacking with interleaved multiphase operation
- Up to 4-phases without external clock
Switching frequency from 100kHz to 2.2MHz
- Synchronization to external clock (SYNCIN)
- Dynamically selectable switching modes (FPWM, diode emulation)
- Spread spectrum (DRSS)
Selectable dead time (14ns to 200ns)
Current sense resistor or DCR sensing
Average inductor current monitor
Average input current limit
- Programmable current limit
- Selectable delay time
Power-good indicator
Programmable VI undervoltage lockout (UVLO)
Lead-less VQFN-32 package with wettable flanks

AEC-Q100 qualified for automotive applications
- Temperature grade 1: TA = –40°C to +125°C
Functional Safety-Capable
- Documentation available to aid functional safety system design
Input voltage 4.5V to 42V
- Minimum 2.5V for V(BIAS) ≥ 4.5V or VOUT ≥ 6V
Output Voltage 6V to 60V
- 2% accuracy, internal feedback resistors
- Bypass operation for VI > VOUT
- Dynamic output voltage tracking
  - Digital PWM tracking (DTRK)
  - Analog tracking (ATRK)
- Overvoltage protection (64V, 50V, 35V, 28.5V)
Low shutdown IQ of 2µA
Low operating IQ of 1.4mA
Stacking with interleaved multiphase operation
- Up to 4-phases without external clock
Switching frequency from 100kHz to 2.2MHz
- Synchronization to external clock (SYNCIN)
- Dynamically selectable switching modes (FPWM, diode emulation)
- Spread spectrum (DRSS)
Selectable dead time (14ns to 200ns)
Current sense resistor or DCR sensing
Average inductor current monitor
Average input current limit
- Programmable current limit
- Selectable delay time
Power-good indicator
Programmable VI undervoltage lockout (UVLO)
Lead-less VQFN-32 package with wettable flanks

Description

The LM5125A-Q1 is a stackable, dual-phase, synchronous boost controller. The device provides a regulated output voltage for lower or equal input voltage also supporting VI to VOUT bypass mode to save power. Stack two devices with or without external clock.

Dynamically program VOUT using the analog or digital ATRK/DTRK function. VI is supported down to 2.5V after start-up as the internal VCC supply is automatically switched from VBIAS to VOUT for VBIAS < 4.5V. The fixed switching frequency is set between 100kHz and 2.2MHz through a resistor on the RT pin or the SYNCIN clock. The switching modes FPWM or diode emulation can be changed during operation.

The implemented protections peak current limit, average input current limit, average inductor current monitor, over and undervoltage protection, and the thermal shutdown protect the device and the application.

ELECTRONIC COMPONENTS
All In One Distributor

LM5125A-Q1

Wide-VIN 2.2MHz dual-phase boost controller with VOUT tracking

Texas Instruments LM5125A-Q1 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS All In One Distributor

LM5125A-Q1

Wide-VIN 2.2MHz dual-phase boost controller with VOUT tracking

Texas Instruments LM5125A-Q1 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS
All In One Distributor