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[China]
Trade Verify
Address: Flat B5 1/F., Manning Ind. Building, 116-118 How Ming Street, Kwun Tong, Kowloon, Hong Kong
Contact name:Tom Guo
STJK(HK) ELECTRONICS CO.,LIMITED |
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Verified Suppliers
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PRODUCT DESCRIPTION
The LT®3971 is an adjustable frequency monolithic buck switching regulator that accepts a wide input voltage range up to 38V. Low quiescent current design consumes only 2.8µA of supply current while regulating with no load. Low ripple Burst Mode operation maintains high efficiency at low output currents while keeping the output ripple below 15mV in a typical application. An internally compensated current mode topology is used for fast transient response and good loop stability.
A high efficiency 0.33Ω switch is included on the die along with a boost Schottky diode and the necessary oscillator, control and logic circuitry. An accurate 1V threshold enable pin can be used to shut down the LT3971, reducing the input supply current to 700nA.
A capacitor on the SS pin provides a controlled inrush current (soft-start). A power good flag signals when VOUT reaches 91% of the programmed output voltage. The LT3971 is available in small 10-lead MSOP and 3mm × 3mm DFN packages with exposed pads for low thermal resistance. A 16-lead MSOP is also offered which has enhanced pin-to-pin fault tolerance.
PRODUCT PROPERTIES
Product Status | Active |
Function | Step-Down |
Output Configuration | Positive |
Topology | Buck |
Output Type | Fixed |
Number of Outputs | 1 |
Voltage - Input (Min) | 4.3V |
Voltage - Input (Max) | 38V |
Voltage - Output (Min/Fixed) | 5V |
Voltage - Output (Max) | - |
Current - Output | 1.2A |
Frequency - Switching | 200kHz ~ 2MHz |
Synchronous Rectifier | No |
Operating Temperature | -40°C ~ 125°C (TJ) |
Mounting Type | Surface Mount |
Package / Case | 10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad |
Supplier Device Package | 10-MSOP-EP |
Base Product Number | LT3971 |
