LTM2887 datasheet(8/30 Pages) AD

8 / 30 page

LTM2810

Rev. A

For more information www.analog.com

PIN FUNCTIONS

LTM2810-S, Logic Side

DI3 (A1): Digital Input, Referenced to VL and GND. Logic

input connected to O3 through the isolation barrier. The

logic state on DI3 translates to the same logic state on

O3. Connect to GND or VL if not used.

DI2 (A2): Digital Input, Referenced to VL and GND. Logic

input connected to O2N and O2P through the isolation

barrier. The logic state on DI2 translates to the same logic

state on O2N and O2P. Connect to GND or VL if not used.

DI1 (A3): Digital Input, Referenced to VL and GND. Logic

input connected to O1 through the isolation barrier. The

logic state on DI1 translates to the same logic state on

O1. Connect to GND or VL if not used.

ON (A4): Enable, Referenced to VL and GND. Enables data

communication through the isolation barrier. If ON is high

the part is enabled and communications are functional to

the isolated side. If ON is low the logic side is held in reset,

all digital outputs are in a high impedance state. Connect

to VL if not driven.

VL (A5): Logic Supply. Interface supply voltage for pins

DI1, DI2, DI3, DO1, DO2P, DO3, DO1E, and ON. Operating

voltage is 1.62V to 5.5V. Internally bypassed with 1μF.

ST1, ST2 (A6, C6): Bridge Driver Outputs, Referenced

to PVCC and GND. Each output runs at 50% duty cycle,

ST1 is 180 degrees out of phase with ST2. Operating

frequency is 2MHz. Bridge driver is enabled when PVCC

is between 3V to 5.5V and ON is high.

DO3 (B1): Digital Output, Referenced to VL and GND.

Logic output connected to I3 through the isolation bar-

rier. Under the condition of an isolation communication

failure this output is in a high impedance state.

DO2N (B2): Open Drain Pull-Down Output to GND. Logic

output connected to I2 through the isolation barrier. Under

the condition of an isolation communication failure this

output is in a high impedance state.

DO2P (B3): Open Drain Pull-Up Output to VL. Logic out-

put connected to I2 through the isolation barrier. Under

the condition of an isolation communication failure this

output is in a high impedance state.

DO1 (B4): Digital Output, Referenced to VL and GND.

Logic output connected to I1 through the isolation bar-

rier. Under the condition of an isolation communication

failure this output is in a high impedance state.

PVCC (B5): Bridge Driver Supply Voltage. Operating volt-

age is 3V to 5.5V, connect to GND to disable bridge driver.

Internally bypassed with 2.2μF.

DO1E (C4): Digital Output Enable, Referenced to VL and

GND. A logic high on DO1E places the logic side DO1 pin

in a high impedance state, a logic low enables the output.

Connect to GND or VL if not used.

VCC (C5): Supply Voltage. Operating voltage is 3V to 5.5V.

Internally bypassed with 1μF.

GND (B6, C1 to C3): Circuit Ground.

LTM2810-S, Isolated Side

O1E (V4): Digital Output Enable, Referenced to VL2 and

GND2. A logic high on O1E places the isolated side O1 pin

in a high impedance state, a logic low enables the output.

Connect to GND2 or VL2 if not used.

VIN (V6): Internal LDO Input Voltage. Operating voltage is

3.6V to 38V. Internally bypassed with 0.1μF.

O3 (W1): Digital Output, Referenced to VL2 and GND2.

Logic output connected to DI3 through the isolation bar-

rier. Under the condition of an isolation communication

failure O3 defaults to a high state.

O2N (W2): Open Drain Pull-Down Output to GND2. Logic

output connected to DI2 through the isolation barrier.

Under the condition of an isolation communication failure

O2N defaults to a low state.

O2P (W3): Open Drain Pull-Up Output to VL2. Logic out-

put connected to DI2 through the isolation barrier. Under

the condition of an isolation communication failure O2P

defaults to a low state.

O1 (W4): Digital Output, Referenced to VL2 and GND2.

Logic output connected to DI1 through the isolation bar-

rier. Under the condition of an isolation communication

failure O1 defaults to a low state.

AVL2 (W5): VL2 LDO Adjust Pin.

LTM2887 датащи(PDF) 8 Page - Analog Devices

LTM2887 датащи(HTML) 8 Page - Analog Devices

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

датащи скачать

ссылки URL