Datasheet > LT8616

LT8616

更新时间： 2022-02-26 10:05:28

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
26页	2036K
描述
60V, 1.2A Synchronous Monolithic Buck Regulator with 6Î¼A Quiescent Current

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LT8616 数据手册

LT8619/LT8619-5

60V, 1.2A Synchronous Monolithic Buck

Regulator with 6µA Quiescent Current

FEATURES

DESCRIPTION

The LT^®8619 is a compact, high efficiency, high speed

Wide Input Voltage Range: 3V to 60V

Fast Minimum Switch-On Time: 30ns

synchronous monolithic step-down switching regulator

that consumes only 6μA of quiescent current. The LT8619

can deliver 1.2A of continuous current. Top and bottom

power switches are included with all necessary circuitry

to minimize the need for external components. Low ripple

Burst Mode^®operation enables high efficiency down to

very low output currents while keeping the output ripple

Ultralow Quiescent Current Burst Mode Operation:

6μA I Regulating 12V to 3.3V

OUT

10mV Output Ripple at No Load

P-P

Synchronizable/Programmable Fixed Frequency

Forced Continuous Mode Operation: 300kHz

to 2.2MHz

to 10mV . A SYNC pin allows forced continuous mode

High Efficiency Synchronous Operation:

P-P

operation synchronized to an external clock. Internal com

92% Efficiency at 0.5A, 5V

90% Efficiency at 0.5A, 3.3V

from 12V

OUT

pensation with peak current mode 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

from 12V

OUT

Low Dropout: 360mV at 0.5A

Low EMI

threshold and can be used to program V undervoltage

lockout or to shut down the LT8619, reducing the input

supply current to below 0.6μA. The PG flag signals when

Accurate 1V Enable Pin Threshold

Internal Soft-Start and Compensation

Power Good Flag

Small Thermally Enhanced 16-Lead MSOP Package

and 10-Lead (3mm × 3mm) DFN Packages

is within 7.5% of the programmed output voltage.

OUT

The LT8619 is available in a small 16-lead MSOP and

10-lead 3mm × 3mm DFN packages with exposed pad

for low thermal resistance.

APPLICATIONS

All registered trademarks and trademarks are the property of their respective owners.

12V Automotive Systems

12V and 24V Commercial Vehicles

48V Electric and Hybrid Vehicles

Industrial Supplies

TYPICAL APPLICATION

5V, 1.2A Step-Down Converter

Efficiency at V_OUT= 5V

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8619 ꢀꢁꢂ1ꢃ

8619f

For more information www.linear.com/LT8619

12 3 4 5 6 7...26

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