MIKROE-1592

MIKROE-1592 Datasheet

PID MIKROE-1592

Part	Datasheet
MIKROE-1592	MIKROE-1592 (pdf)

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BUCK click PID MIKROE-1592 BUCK click is a buck switching regulator that accepts a wide input voltage range of up to 40V and steps it down to 3.3V or 5V. The click carries the LT3976 40V, 5A, 2MHz step-down switching regulator with 3.3µA quiescent current. BUCK click communicates with the target microcontroller over the following pins on the mikroBUS line PWM, INT, RS, CS. Note When all the usual conditions and proper cooling are met BUCK click can supply up to 5A of load current. LT3976 regulator features The LT3976 is an adjustable frequency monolithic buck switching regulator that accepts a wide input voltage range up to 40V. Low quiescent current design consumes only 3.3µA 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. The LT3976 can supply up to 5A of load current and has current limit foldback to limit power dissipation during short-circuit. A low dropout voltage of 500mV is maintained when the input voltage drops below the programmed output voltage, such as during automotive cold crank. How the click works There are two onboard screw terminals, one for connecting the external input supply, and the other for the output. There is also a multiplexer which chooses the resistor used for setting the switching frequency. The multiplexer is used for selecting one of the four different resistors. Each of these resistors, if selected, sets different switching frequency: Selects resistor Switching frequency [MHz] R7 = 130k R8 = 32.4k R9 = 54.9k R10 = 21.5k Specifications Type Buck Applications Automotive battery regulation, portable devices, industrial supplies, etc. modules LT3976 switching regulator, MAX4634 CMOS analog multiplexer Key Features Thermal shutdown protection, output voltage can be set to 3.3V or 5V, 4 possible switching frequencies Interface GPIO Input Voltage 3.3V or 5V Click board size L x mm Pinout diagram This table shows how the pinout on BUCK click corresponds to the pinout on the mikroBUS socket the latter shown in the two middle columns . Notes Notes NC 1 AN PWM 16 Multiplexer A0 pin A0 2 RST INT 15 Enable IC Power supply Ground EN 3 CS TX 14 NC 4 SCK RX 13 MIS O MOS I +3.3V 7 3.3V 5V 10

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BUCK click

PID MIKROE-1592

BUCK click is a buck switching regulator that accepts a wide input voltage range of up to 40V and steps it down to 3.3V or 5V. The click carries the LT3976 40V, 5A, 2MHz step-down switching regulator with 3.3µA quiescent current. BUCK click communicates with the target microcontroller over the following pins on the mikroBUS line PWM, INT, RS, CS.

Note When all the usual conditions and proper cooling are met BUCK click can supply up to 5A of load current.

LT3976 regulator features

The LT3976 is an adjustable frequency monolithic buck switching regulator that accepts a wide input voltage range up to 40V. Low quiescent current design consumes only 3.3µA 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.

The LT3976 can supply up to 5A of load current and has current limit foldback to limit power dissipation during short-circuit. A low dropout voltage of 500mV is maintained when the input voltage drops below the programmed output voltage, such as during automotive cold crank.

How the click works

There are two onboard screw terminals, one for connecting the external input supply, and the other for the output. There is also a multiplexer which chooses the resistor used for setting the switching frequency.

The multiplexer is used for selecting one of the four different resistors. Each of these resistors, if selected, sets different switching frequency:

Selects resistor

Switching frequency [MHz]

R7 = 130k

R8 = 32.4k

R9 = 54.9k

R10 = 21.5k

Specifications

Type

Buck

Applications Automotive battery regulation, portable devices, industrial supplies, etc.
modules

LT3976 switching regulator, MAX4634 CMOS analog multiplexer

Key Features

Thermal shutdown protection, output voltage can be set to 3.3V or 5V, 4 possible switching frequencies

Interface

GPIO

Input Voltage 3.3V or 5V

Click board size L x mm

Pinout diagram

This table shows how the pinout on BUCK click corresponds to the pinout on the mikroBUS socket the latter shown in the two middle columns .

Notes

Notes

NC 1 AN PWM 16

Multiplexer A0 pin A0 2 RST INT 15

Enable IC

Power supply Ground

EN 3 CS TX 14

NC 4 SCK RX 13

MIS O

MOS I
+3.3V 7 3.3V 5V 10

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Datasheet ID: MIKROE-1592 649287