描述 Description

The TPS650331-Q1 device is a highly integrated power management IC for automotive camera modules. This device combines three step-down converters and one low-dropout (LDO) regulator. The BUCK1 step-down converter has an input voltage range up to 18.3 V for connections to power over coax (PoC). All converters operate in a forced fixed-frequency PWM mode. The LDO can supply 300 mA and operate with an input voltage range from 2.5 V to 5.5 V. The step-down converters and the LDO have separate voltage inputs that enable maximum design and sequencing flexibility.

The TPS650331-Q1 is available in a 24-pin VQFN package (4.00 mm × 4.00 mm).

特性 Features

? Qualified for automotive applications
? Systematic capability of up to ASIL D and SIL 3 targeted
? Hardware integrity up to ASIL B and SIL 2 targeted
? Advanced diagnostics and protection
? Integrated voltage monitors
? I 2C interface for control and diagnostics

? AEC-Q100 grade 1 qualified
? -40°C to +125°C ambient operating temperature range

? Three step-down converters:
? BUCK1 V IN range from 4.0 V to 18.3 V
? BUCK1 V OUT range from 2.5 V to 4.0 V
? BUCK1 output current up to 1500-mA
? BUCK2 and BUCK3 V IN range from 2.5 V to 5.5 V
? BUCK2 and BUCK3 V OUT range from 0.9 V to 1.9 V
? BUCK2 and BUCK3 output current up to 1200-mA
? Spread-spectrum clock (SSC) generation for reduced EMI
? 2.3-MHz forced fixed switching frequency PWM operation

? One low dropout (LDO) regulator:
? V IN range from 2.5 V to 5.5 V
? V OUT range from 1.8 V to 3.3 V
? Low noise and high PSRR
? Adjustable output voltage through I 2C
? Up to 300-mA output current

? 4.0-mm × 4.0-mm 24-pin VQFN with wettable flanks