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Quantity | Price (inc GST) |
---|---|
1+ | CNY31.960 (CNY36.1148) |
10+ | CNY27.780 (CNY31.3914) |
Product Information
Product Overview
LT®3990 is an adjustable frequency monolithic buck step-down regulator with 2.5µA quiescent current and integrated diodes that accepts a wide input voltage range up to 62V, and consumes only 2.5µA of quiescent current. A high efficiency switch is included on the die along with the catch diode, boost diode and the necessary oscillator, control and logic circuitry. Low ripple burst mode operation maintains high efficiency at low output currents while keeping the output ripple below 5mV in a typical application. Current mode topology is used for fast transient response and good loop stability. A catch diode current limit provides protection against shorted outputs and overvoltage conditions. Applications are automotive battery regulation, power for portable products, industrial supplies.
- Low ripple burst mode® operation 2.5µA IQ at 12VIN to 3.3VOUT
- Output ripple <lt/>5mVP-P
- Minimum input voltage of 4 to 4.2V2, low shutdown current of IQ = 0.7µA
- Fixed output voltage of 0.0002V (4.2V <lt/> VIN <lt/> 40V)
- Adjustable switching frequency of 200KHz to 2.2MHz
- Integrated boost and catch diodes, internal sense limits catch diode current
- 350mA output current
- Accurate programmable undervoltage lockout, power good flag
- -40°C to 125°C temperature range
- 16-lead plastic MSOP package
Notes
ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party
Technical Specifications
Adjustable
Buck (Step Down)
62V
350mA
16Pins
-
-
-
125°C
-
No SVHC (21-Jan-2025)
-
1Outputs
4.2V
350mA
MSOP-EP
Surface Mount
1.21V
2.3MHz
-40°C
-
MSL 1 - Unlimited
MSOP-EP
2.3MHz
Technical Docs (2)
Legislation and Environmental
Country in which last significant manufacturing process was carried outCountry of Origin:Philippines
Country in which last significant manufacturing process was carried out
RoHS
RoHS
Product Compliance Certificate