Analog Devices ADP1804 Product Info

The ADP1804 is a multiple output power supply including two synchronous buck regulators, one preboost controller, four low dropout (LDO) regulators, a high-side driver, and a pyro fuse driver and is dedicated for the automotive market. The sleep mode and deep sleep mode are available with various wake-up modes.

Multiple switching and linear voltage regulators supply the microprocessor, sensor, and interface devices. The switching regulators operate in default fixed 2MHz switching frequency. The device can also be configured with the spread spectrum feature. The switching frequency of preboost is configurable. Four low noise LDO regulators provide clean voltage for the system. The LDO4 is a high voltage always on LDO with extremely low quiescent current and low noise that is suitable for the system base load. An advanced power management scheme is implemented to maintain high efficiency over a wide range of input voltages (down to 4V). The power on/off sequence and operation status can be easily managed by the scheme.

High-side driver and pyro fuse driver manage the power path for battery charging and loading. The two independent high-side switch drivers are, by default, targeted to control two sets of common source metal-oxide semiconductor field effect transistors (MOSFETs). The devices strong driving capability is suitable for high current, multiparalleled power devices. The pyro fuse driver provides redundant power path management to make sure the system works in a safe state—even in worst case scenarios.

Please see the data sheet for the full description.

APPLICATIONS

• 12V battery pack power system bias
• Electric power steering
• Engine management
• Transmission and active suspension
• Electric vehicle (EV), hybrid electric vehicle (HEV), and inverter
• Advanced driver assistance systems