Home Power management Multi-channel ICs (PMICs)
Home
Power management
Multi-channel ICs (PMICs)

LM5127-Q1

ACTIVE

42V wide-Vin triple buck and boost controller for automotive applications

Order now
Data sheet

LM5127-Q1

ACTIVE
Data sheet Order now

Product details

Regulated outputs (#) 3 Vin (Min) (V) 0.8 Vin (Max) (V) 42 Iout (Max) (A) 30 Rating Automotive Iq (Typ) (mA) 3 Features Enable, Power Good, Thermal Shutdown, Overvoltage Protection, Overcurrent Protection Shutdown current (ISD) (Typ) (uA) 2.2 Configurability Hardware configurable, User programmable
Regulated outputs (#) 3 Vin (Min) (V) 0.8 Vin (Max) (V) 42 Iout (Max) (A) 30 Rating Automotive Iq (Typ) (mA) 3 Features Enable, Power Good, Thermal Shutdown, Overvoltage Protection, Overcurrent Protection Shutdown current (ISD) (Typ) (uA) 2.2 Configurability Hardware configurable, User programmable
VQFN (RGZ) 48 49 mm² 7 x 7
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Suited for various architectures and scalable
    • Triple-output synchronous controllers
    • Flexible topology
      • CH1: boost / buck topology
      • CH2, CH3: two single phase bucks / dual-phase interleaved buck topology
    • Enable pin and PGOOD indicator per channel
    • Optional low IQ battery monitor
  • Wide operating range for automotive applications
    • 3.8-V to 42-V input operating range
    • Minimum boost input 0.8 V when BIAS ≥ 3.8 V
    • Boost output: adjustable up to 42 V
    • Buck output: fixed 3.3 V, 5 V, or adj. 0.8 - 42 V
    • Bypass operation when VSUPPLY>VLOAD (boost)
    • LDO operation when VSUPPLY ≈ VLOAD (buck)
  • Minimized battery drain
    • Shutdown current ≤ 2.8 µA
    • Automatic transition to low-IQ sleep mode
    • Battery drain in sleep
      • IQ≤ 14 µA when 3.3-V buck on
      • IQ≤ 22 µA when 3.3-V and 5-V bucks on
      • IQ≤ 32 µA when 3.3-V, 5-V bucks on and boost in bypass
    • High efficiency using strong 5-V drivers
    • Dual input VCC and VDD regulators
  • Small and cost-effective solution
    • Maximum switching frequency 2.2 MHz
    • Internal boot diode (boost)
    • Constant peak current limit
    • Supports DCR inductor current sensing
    • QFN-48 with wettable flanks
  • Avoid AM band interference and crosstalk
    • Optional clock synchronization
    • Switching frequency from 100 kHz to 2.2 MHz
    • Selectable switching mode (FPWM, diode emulation, and skip mode)
  • EMI mitigation
    • Optional programmable spread spectrum
  • Programmability and flexibility
    • Programmable wake-up and sleep threshold
    • Dynamic switching frequency programming
    • Adjustable soft start time
    • Adjustable output using 0.8 V ±1% reference
    • Adaptive dead-time control
  • Integrated protection features
    • Overcurrent protection
      • Cycle-by-cycle peak current limit
      • Optional hiccup mode protection (buck)
      • Optional latch-off mode protection (buck)
    • Overvoltage protection
    • HB-SW short protection (boost)
    • Thermal shutdown
  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • Suited for various architectures and scalable
    • Triple-output synchronous controllers
    • Flexible topology
      • CH1: boost / buck topology
      • CH2, CH3: two single phase bucks / dual-phase interleaved buck topology
    • Enable pin and PGOOD indicator per channel
    • Optional low IQ battery monitor
  • Wide operating range for automotive applications
    • 3.8-V to 42-V input operating range
    • Minimum boost input 0.8 V when BIAS ≥ 3.8 V
    • Boost output: adjustable up to 42 V
    • Buck output: fixed 3.3 V, 5 V, or adj. 0.8 - 42 V
    • Bypass operation when VSUPPLY>VLOAD (boost)
    • LDO operation when VSUPPLY ≈ VLOAD (buck)
  • Minimized battery drain
    • Shutdown current ≤ 2.8 µA
    • Automatic transition to low-IQ sleep mode
    • Battery drain in sleep
      • IQ≤ 14 µA when 3.3-V buck on
      • IQ≤ 22 µA when 3.3-V and 5-V bucks on
      • IQ≤ 32 µA when 3.3-V, 5-V bucks on and boost in bypass
    • High efficiency using strong 5-V drivers
    • Dual input VCC and VDD regulators
  • Small and cost-effective solution
    • Maximum switching frequency 2.2 MHz
    • Internal boot diode (boost)
    • Constant peak current limit
    • Supports DCR inductor current sensing
    • QFN-48 with wettable flanks
  • Avoid AM band interference and crosstalk
    • Optional clock synchronization
    • Switching frequency from 100 kHz to 2.2 MHz
    • Selectable switching mode (FPWM, diode emulation, and skip mode)
  • EMI mitigation
    • Optional programmable spread spectrum
  • Programmability and flexibility
    • Programmable wake-up and sleep threshold
    • Dynamic switching frequency programming
    • Adjustable soft start time
    • Adjustable output using 0.8 V ±1% reference
    • Adaptive dead-time control
  • Integrated protection features
    • Overcurrent protection
      • Cycle-by-cycle peak current limit
      • Optional hiccup mode protection (buck)
      • Optional latch-off mode protection (buck)
    • Overvoltage protection
    • HB-SW short protection (boost)
    • Thermal shutdown

The LM5127-Q1 is a full featured, wide input range three channel DC/DC controller which supports flexible topology (Boost/Buck) with peak current mode control. The device is designed as an integrated one-chip solution for the front-stage power supply in automotive infotainment, cluster, body control as well as ADAS systems. (continue on next page)

The LM5127-Q1 is a full featured, wide input range three channel DC/DC controller which supports flexible topology (Boost/Buck) with peak current mode control. The device is designed as an integrated one-chip solution for the front-stage power supply in automotive infotainment, cluster, body control as well as ADAS systems. (continue on next page)
open-in-new Find other Multi-channel ICs (PMICs)
Download

Technical documentation

star =Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 4
Type Title Date
* Data sheet LM5127-Q1 2.2-MHz Wide VIN Automotive Front-stage Multi-rail DC/DC datasheet (Rev. A) PDF | HTML 17 Dec 2020
EVM User's guide LM5127EVM-FLEX Evaluation Module (Rev. A) PDF | HTML 16 Dec 2020
Functional safety information LM5127-Q1 Functional Safety, FIT Rate and Failure Mode Distribution PDF | HTML 11 Dec 2020
Certificate LM5127EVM-FLEX EU RoHS Declaration of Conformity (DoC) (Rev. A) 25 Nov 2020

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

LM5127EVM-FLEX — LM5127 Flexible topology evaluation Module

The LM5127EVM-FLEX showcases the features and performance of the LM5127-Q1 when configured with channel 1 as a pre-boost, and channel 2 and channel 3 configured as independent buck controllers. The input voltage range is 3V to 42V. The pre-boost can operate down to 3V during input transients, (...)
User guide: PDF | HTML
Not available on TI.com
Simulation model

LM5127-Q1 Boost PSpice Average Model

SLVMD93.ZIP (65 KB) - PSpice Model
Download
Simulation model

LM5127-Q1 Boost PSpice Transient Model

SLVMD97.ZIP (132 KB) - PSpice Model
Download
Simulation model

LM5127-Q1 Buck PSpice Average Model

SLVMD95.ZIP (62 KB) - PSpice Model
Download
Simulation model

LM5127-Q1 Buck PSpice Transient Model

SLVMD96.ZIP (114 KB) - PSpice Model
Download
Simulation model

LM5127-Q1 Dual Buck PSpice Average Model

SLVMD94.ZIP (69 KB) - PSpice Model
Download
Simulation model

LM5127-Q1 Dual Buck PSpice Transient Model

SLVMD98.ZIP (156 KB) - PSpice Model
Download
Calculation tool

LM5127-Q1 Controller Quick Start Calculator

SLVRBH2.ZIP (7463 KB)
Download
Reference designs

PMP23194 — Three-output reference design for automotive ADAS including power for main processor and cameras

This reference design provides power for automotive Advanced Driver-Assistance Systems (ADAS) to power cameras (8 V), Controller Area Network (CAN) communications (5 V) and main processor (3.3 V). Operation is over the full automotive range including battery voltage surges to 34 V and dips to 6 V (...)
Test report: PDF
Package Pins Download
VQFN (RGZ) 48 View options

Ordering & quality

Information included:
  • RoHS
  • REACH
  • Device marking
  • Lead finish/Ball material
  • MSL rating/Peak reflow
  • MTBF/FIT estimates
  • Material content
  • Qualification summary
  • Ongoing reliability monitoring

Recommended products may have parameters, evaluation modules or reference designs related to this TI product.

Support & training

TI E2E™ forums with technical support from TI engineers

View all forum topics

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos