(China (Mainland))
Product Summary
The LT3972EMSE is an adjustable frequency (200kHz to 2.4MHz) monolithic buck switching regulator that accepts input voltages up to 33V (62V Maximum). A high effi ciency 95mΩ switch is included on the die along with a boost Schottky diode and the necessary oscillator, control, and logic circuitry. Current mode topology is used for fast transient response and good loop stability. Low ripple Burst Mode operation maintains high effi ciency at low output currents while keeping output ripple below 15mV in a typical application. In addition, the LT3972EMSE can further enhance low output current effi ciency by drawing bias current from the output when VOUT is above 3V. The applications of the LT3972EMSE include automotive battery regulation, distributed supply regulation, industrial supplies, wall transformer regulation.
Parametrics
LT3972EMSE absolute maximum ratings: (1)VIN, RUN/SS Voltage: 62V; (2)BOOST Pin Voltage: 56V; (3)BOOST Pin Above SW Pin: 30V; (4)FB, RT, VC Voltage: 5V; (5)PG, BD, SYNC Voltage: 30V; (6)Operating Junction Temperature Range: -40℃ to 125℃; (7)Storage Temperature Range: -65℃ to 150℃; (8)Lead Temperature (Soldering, 10 sec) (MSE Only): 300℃.
Features
LT3972EMSE features: (1)Wide Input Range: Operation from 3.6V to 33V; Over Voltage Lockout Protects Circuits Through 62V Transients; (2)3.5A Maximum Output Current; (3)Low Ripple (<15mVP-P) Burst ModeR Operation: IQ = 75μA at 12VIN to 3.3VOUT; (4)Adjustable Switching Frequency: 200kHz to 2.4MHz; (5)Low Shutdown Current: IQ < 1μA; (6)Integrated Boost Diode; (7)Synchronizable Between 250kHz to 2MHz; (8)Power Good Flag; (9)Saturating Switch Design: 95mΩ On-Resistance; (10)Output Voltage: 0.79V to 30V; (11)Thermal Protection; (12)Soft-Start Capability; (13)Small 10-Pin Thermally Enhanced MSOP and (3mm × 3mm) DFN Packages.
Diagrams
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 LT3972EMSE#PBF |
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IC REG BUCK ADJ 3.5A 10MSOP |
Data Sheet |
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LT3972EMSE#TRPBF |
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IC REG BUCK ADJ 3.5A 10MSOP |
Data Sheet |
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