LT8607/LT8607B
42V, 750mA Synchronous
Step-Down Regulator with
2.5µA Quiescent Current
FEATURES
DESCRIPTION
The LT®8607 is a compact, high efficiency, high speed syn-
chronous monolithic step-down switching regulator that
consumes only 1.7µA of non-switching quiescent current.
The LT8607 can deliver 750mA of continuous current.
Burst Mode operation enables high efficiency down to very
low output currents while keeping the output ripple below
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Wide Input Voltage Range: 3.0V to 42V
Ultralow Quiescent Current Burst Mode® Operation
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<3µA I Regulating 12V to 3.3V
Q
IN
P-P
OUT
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Output Ripple <10mV
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High Efficiency 2MHz Synchronous Operation
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>93% Efficiency at 0.5A, 12V to 5V
IN
OUT
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10mV . Internal compensation with peak current mode
750mA Maximum Continuous Output
Fast Minimum Switch-On Time: 35ns
LT8607 Available in Fixed 5V Output
Adjustable and Synchronizable: 200kHz to 2.2MHz
Spread Spectrum Frequency Modulation for Low EMI
Allows Use of Small Inductors
Low Dropout
Peak Current Mode Operation
Accurate 1V Enable Pin Threshold
Internal Compensation
Output Soft-Start and Tracking
P-P
topology allows the use of small inductors and results in
fast transient response and good loop stability. The EN/UV
pin has an accurate 1V threshold and can be used to pro-
gram V undervoltage lockout or to shut down the LT8607
IN
reducing the input supply current to 1µA.
The MSOP package includes a SYNC pin to synchronize
to an external clock, or to select Burst Mode operation
or pulse-skipping with or without spread spectrum; the
TR/SS pin programs soft-start or tracking. The DFN
package omits these pins and can be purchased in pulse-
skipping or Burst Mode operation.
Small Thermally Enhanced 10-Lead MSOP Package
or 8-Lead 2mm × 2mm DFN Package
AEC-Q100 Qualified for Automotive Applications
PART NUMBER PACKAGE OUTPUT VOLTAGE SYNC FUNCTIONALITY
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LT8607MSE
MSE
Programmable
Fixed 5V Out
Programmable
LT8607-5MSE MSE
Programmable
APPLICATIONS
General Purpose Step-Down Converter
Low EMI Step Down
LT8607DFN
DFN
DFN
Programmable
Programmable
Burst Mode Operation
Pulse-Skipping Mode
LT8607BDFN
All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION
12VIN to 5VOUT Efficiency
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5V, 2MHz Step-Down
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1MΩ
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Rev. D
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