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LM61480QRPHRQ1

Buck Switching Regulator IC Positive Adjustable 1V 1 Output 8A 16-PowerVFQFN

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

LM61480QRPHRQ1
Datasheet:

LM61480QRPHRQ1 Datasheet (PDF)
Series:

Automotive, AEC-Q100
Function:

Step-Down
Output Configuration:

Positive
Topology:

Buck
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LM61480QRPHRQ1 General Description

The LM6x4xx-Q1 buck regulator family are automotive-focused regulators providing either fixed or an adjustable output voltage which can be set from 1 V to 95% of expected input voltage. These regulators operate under a wide input voltage range of 3 to 36V and has transient tolerance up to 42 V.

The family is designed for low EMI. The device incorporates pin selectable spread spectrum, and an adjustable SW node rise time. Dual Random Spread Spectrum (DRSS) frequency hopping is set to ±4% (typical), drastically reducing peak emissions through a combination of triangular and pseudorandom modulation, and includes advanced techniques to reduce output voltage ripple caused by spread spectrum modulation.

An open-drain RESET output, with filtering and delayed release, gives a true indication of system status. In auto mode the device automatically transitions between Fixed frequency Pulse Width Modulation (FPWM) and Pulse Frequency Modulation (PFM) modes of operation, allowing an unloaded current consumption of only 5 µA (typical). Electrical characteristics are specified over a junction temperature range of –40°C to +150°C.

Key Features

AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, T_A
Functional Safety-Capable
- Documentation available to aid functional safety system design
Input voltage range from 3 V to 36 V
RESET output with filter and delayed release
Designed for low EMI:
- CISPR 25 class 5 compliant EVM
- Pin-configurable spread spectrum
- Adjustable SW node rise time
- Above and below AM band operation: pin configurable 400 kHz and 2.2 MHz fixed or adjustable from 200 kHz – 2.2 MHz
- Low EMI symmetrical pinout
- Light load mode is pin-configurable for constant frequency or pulse frequency modulation (PFM)
High-efficiency solution
- 95% efficient for an 8-A load
- 5-µA input current while unloaded in auto mode
- <1-µA shutdown current (typical)
High power density
- Built-in compensation, soft start, current limit, thermal shutdown, and UVLO
- 4.5-mm × 3.5-mm wettable flank QFN package
- ϴ_JA = 21.6°C/W, measured on LM61495RPHEVM

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Voltage Regulators - DC DC Switching Regulators	Series	Automotive, AEC-Q100
Function	Step-Down	Output Configuration	Positive
Topology	Buck	Output Type	Adjustable
Number of Outputs	1	Voltage - Input (Min)	3V
Voltage - Input (Max)	36V	Voltage - Output (Min/Fixed)	1V
Voltage - Output (Max)	34.2V	Current - Output	8A
Frequency - Switching	400kHz, 2.2MHz, 200kHz ~ 2.2MHz	Synchronous Rectifier	No
Operating Temperature	-40°C ~ 150°C (TJ)	Mounting Type	Surface Mount, Wettable Flank