IQ1209SA

Current - Output (Max):	111mA
Size / Dimension:	0.76" L x 0.24" W x 0.39" H (19.3mm x 6.0mm x 10.0mm)
Package / Case:	7-SIP Module, 6 Leads
Mounting Type:	Through Hole
Efficiency:	86%
Operating Temperature:	-40°C ~ 85°C
Features:	--
Applications:	ITE (Commercial)
Voltage - Isolation:	1kV
Power (Watts):	1W
Series:	IQ
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	9V
Voltage - Input (Max):	13.2V
Voltage - Input (Min):	10.8V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Active
Packaging:	Tube

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<p>DC-DC converters are power converter systems used to change a DC voltage from one level to another. The IQ1209SA is a switched-mode DC-DC converter specifically designed to provide stable and reliable output voltage control for 12V, 9V and 4.5V applications. It has single-channel synchronous buck mode, multiple input voltage ranges, high output current capability and excellent EMI performance.</p><p>The IQ1209SA provides the capability to adjust the output voltage from 0.8V to 9V and the output current to 4A effectively. It allows a wide selection of inputs and outputs with flexible regulation, while meeting fast transient response requirements. It is compatible with multiple industry-standard step-down DC-DC converters, such as SEPIC, flyback, and buck topologies, and includes an integrated low-dropout (LDO) linear regulator. The IQ1209SA features an integrated Fast Clock Sync (FCS) module allowing the converter to sync to the system clock in order to achieve stable and reliable operation.</p><p>The IQ1209SA is specifically designed for applications that require fast transient response and high efficiency in order to maintain long-term reliability. It is particularly well-suited for point-of-load and power management applications that require high current and precise output voltage control.</p><p>The working principle of the IQ1209SA is based on the synchronous buck mode. The output voltage is generated by regulating the voltage drop across a series of power MOSFETs. A control circuit maintains precise output voltage regulation based on an external feedback circuit. The feedback circuit compares the output voltage to the voltage reference set by the user. This comparison drives the internal control circuit which adjusts the duty cycle and current needed to maintain the desired output voltage.</p><p>The IQ1209SA also features integrated soft-start and current-limit protection. It also includes an input undervoltage lockout (UVLO) circuit designed to protect the converter from overvoltage and overcurrent conditions. The UVLO circuit also includes an input channel select switch which is designed to ensure only a single input voltage is used at any given time.</p><p>In addition, the IQ1209SA includes an integrated oscillator and an adjustable frequency range designed to reduce the system ripple current and to maintain fast transient response. The integrated thermal shutdown circuit prevents any thermal damage while ensuring maximum reliability of the converter.</p><p>The IQ1209SA is a highly versatile, robust and reliable DC-DC converter designed for 12V, 9V and 4.5V applications. Its wide input voltage range, fast transient response, accurate voltage regulation and integrated protection functions make it an ideal solution for point-of-load and power management applications.</p>

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