Texas Instruments LM5141-Q1 Product Info

Parameters

Rating	Automotive
Topology	Buck
Iout (max) (A)	20
Vin (max) (V)	65
Vin (min) (V)	3.8
Vout (max) (V)	15
Vout (min) (V)	1.5
Control mode	current mode
Features	Adjustable current limit, Enable, Frequency synchronization, Light Load Efficiency, Power good, Pre-Bias Start-Up, Spread Spectrum, Synchronous Rectification, Tracking, UVLO Fixed
EMI features	Spread Spectrum
Duty cycle (max) (%)	78
Iq (typ) (A)	0.000035
Number of phases	1
TI functional safety category	Functional Safety-Capable
Operating temperature range (°C)	-40 to 150

Package

VQFN (RGE)-24-16 mm² 4 x 4

Features

Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
V_IN: 3.8 V to 65 V (70 V Absolute Maximum)
Output: Fixed 3.3 V, 5 V, or Adjustable From
1.5 V to 15 V with ±0.8% Accuracy
Fixed 2.2-MHz or 440-kHz Switching Frequency with ±5% Accuracy
High-Side and Low-Side Gate Drive With Slew-Rate Control
Optional Frequency Shift by Varying an Analog Voltage or RT Resistor
Optional Synchronization to an External Clock
Optional Spread Spectrum
Shutdown Mode I_Q: 10 µA Typical
Low Standby Mode I_Q: 35 µA Typical
75-mV Current Limit Threshold with ±0.9% Accuracy
External Resistor or DCR Current Sensing
Output Enable Logic Input
Hiccup Mode for Sustained Overload
Power-Good Indication Output
Selectable Diode Emulation or Forced Pulse-Width Modulation
24-pin VQFN Package With Wettable Flanks
Create a Custom Design Using the LM5141-Q1 With the WEBENCH^® Power Designer

Qualified for Automotive Applications
AEC-Q100 Qualified With the Following Results:
- Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C4B
V_IN: 3.8 V to 65 V (70 V Absolute Maximum)
Output: Fixed 3.3 V, 5 V, or Adjustable From
1.5 V to 15 V with ±0.8% Accuracy
Fixed 2.2-MHz or 440-kHz Switching Frequency with ±5% Accuracy
High-Side and Low-Side Gate Drive With Slew-Rate Control
Optional Frequency Shift by Varying an Analog Voltage or RT Resistor
Optional Synchronization to an External Clock
Optional Spread Spectrum
Shutdown Mode I_Q: 10 µA Typical
Low Standby Mode I_Q: 35 µA Typical
75-mV Current Limit Threshold with ±0.9% Accuracy
External Resistor or DCR Current Sensing
Output Enable Logic Input
Hiccup Mode for Sustained Overload
Power-Good Indication Output
Selectable Diode Emulation or Forced Pulse-Width Modulation
24-pin VQFN Package With Wettable Flanks
Create a Custom Design Using the LM5141-Q1 With the WEBENCH^® Power Designer

Description

The LM5141-Q1 is a synchronous buck controller, intended for high voltage wide V_IN step-down converter applications. The control method is peak current mode control. Current mode control provides inherent line feed-forward, cycle-by-cycle current limiting, and ease-of-loop compensation. The LM5141-Q1 features slew rate control to simplify the compliance with CISPR and automotive EMI requirements.

The LM5141-Q1 has two selectable switching frequencies: 2.2 MHz and 440 kHz. Gate drivers with slew rate Control that can be adjusted to reduce EMI.

In light or no-load conditions, the LM5141-Q1 operates in skip cycle mode for improved low power efficiency. The LM5141-Q1 has a high voltage bias regulator with automatic switch-over to an external bias to reduce the I_Q current from V_IN. Additional features include frequency synchronization, cycle-by-cycle current limit, hiccup mode fault protection for sustained overload, and power good output.

ELECTRONIC COMPONENTS
All In One Distributor

LM5141-Q1

Automotive wide-input 2.2-MHz low-IQ synchronous buck controller

Texas Instruments LM5141-Q1 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS All In One Distributor

LM5141-Q1

Automotive wide-input 2.2-MHz low-IQ synchronous buck controller

Texas Instruments LM5141-Q1 Product Info

Parameters

Package

Features

Description

SUBMITTED SUCCESSFULLY！

ELECTRONIC COMPONENTS
All In One Distributor