Qualified for automotive 36V & 600mA Synchronous Step-Down DC/DC Converters

The XD9705 series are 36V operation synchronous step-down DC/DC converter ICs with a built-in High side driver FET and Low side driver FET. The XD9704/XD9705 series has an operating voltage range of 3.0V to 36.0V, a switching frequency of 2.2MHz,and by utilizing synchronous rectification, delivers stable voltage with high efficiency.The output voltage can be changed from 2.8V to 15.0V using an external resistor, so the same part number can be used for multiple power lines.

By connecting a resistor and capacitor to the EN/SS pin, the soft-start time can be externally adjusted to be longer than the internal soft-start. The power good function also monitors the state of the output voltage. This soft-start external adjustment and power good functions make it easy to configure the power supply sequence. Over-current protection and thermal shutdown are built in as protection function, and it can be used safely.

Feature

Input Voltage Range 3.0V ~ 36.0V (Absolute Max 40.0V)
Surge Voltage 46.0V (Applied Time≦400ms)
Output Voltage Range 2.8V ~ 15.0V
FB Voltage 0.75V±1.5%
Maximum Output Current 600mA
Oscillation Frequency 2.2MHz
Quiescent Current 11μA
Control Methods PWM/PFM Control
Efficiency 88%@12V→5V, 300mA
Protection functions Current Limit (Automatic Recovery)
Thermal Shutdown
Functions Soft-Start (external adjustment)
Power Good (DFN1820-6J only)
Output Capacito Ceramic Capacitor
Operating Junction Temperature -40℃ ~ 150℃

Typical Application Circuit

Packages

Package Number of Pins Pcs/Reel Package Size(mm)
SOT-89-5 5 1,000 4.5 x 4.6 x 1.6

XD9705 Series Part Numbers

Part number Sample FB Voltage Oscillation Frequency Packages EDA Online Store

XD9705B75DPR-Q

 0.75V 2.2MHz SOT-89-5

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