Datasheet Analog Devices LT3970EDDB-3.3#TRMPBF — Datenblatt

LT3970 Series
40V, 350mA Step-Down
Regulator with 2.5µA Quiescent
Current and Integrated Diodes
FEATURES DESCRIPTION Low Ripple Burst Mode® Operatio 2.5µA I at 12V to 3.3V
Q
IN
OUT
n Output Ripple < 5mV
P-P
n Wide Input Voltage Range: 4.2V to 40V Operating
n Adjustable Switching Frequency: 200kHz to 2.2MHz
n Integrated Boost and Catch Diodes
n 350mA Output Current
n Fixed Output Voltages: 3.3V, 3.42V, 5V 1.8µA IQ at 12VIN
n Accurate 1V Enable Pin Threshold
n Low Shutdown Current: I = 0.7µA
Q
n Internal Sense Limits Catch Diode Current
n Power Good Flag
n Output Voltage: 1.21V to 25V
n Internal Compensatio Small 10-Pin MSOP and (3mm × 2mm) DFN Packages
n AEC-Q100 Qualified for Automotive Applications The LT®3970 is an adjustable frequency monolithic buck …

LT3970 Series
40V, 350mA Step-Down
Regulator with 2.5µA
Quiescent Current and
Integrated Diodes
Features Description Low Ripple Burst Mode® Operation 2.5µA IQ at 12VIN to 3.3VOUT Output Ripple < 5mVP-P
n Wide Input Voltage Range: 4.2V to 40V Operating
n Adjustable Switching Frequency: 200kHz to 2.2MHz
n Integrated Boost and Catch Diodes
n 350mA Output Current
n Fixed Output Voltages: 3.3V, 3.42V, 5V 1.8µA IQ at 12VIN
n Accurate 1V Enable Pin Threshold
n Low Shutdown Current: I = 0.7µA
Q
n Internal Sense Limits Catch Diode Current
n Power Good Flag
n Output Voltage: 1.21V to 25V
n Internal Compensatio Small 10-Pin MSOP and (3mm × 2mm) DFN Packages The LT®3970 is an adjustable frequency monolithic buck
switching regulator that accepts a wide input voltage
range up to 40V, 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 …