TLP7820 — Datasheet Summary, Specs & Alternatives

01 — Overview

This Toshiba datasheet covers the TLP7820, an optically isolated amplifier designed for current sensing in motor drives and power inverters. Key parameters include a gain accuracy of ±0.5%, bandwidth of 230 kHz, and common-mode transient immunity of 15 kV/µs. It operates across -40 to 105°C with UL and cUL safety recognition. The document details pinouts, circuit requirements like bypass capacitors, and absolute maximum ratings such as 5000 Vrms isolation voltage.

02 — Key specifications

Datasheet parameters

Parameter	Min	Typ	Max	Conditions
quiescent current	—	8.6 mA	12 mA	VIN+ = 0 V
supply voltage range	4.5 V	5 V	5.5 V
input offset voltage drift	—	2 µV/°C	6 µV/°C
input offset voltage	-600 µV	900 µV	2.4 mV	Ta = 25 °C
cmrr	—	80 dB	—
operating temperature	-40 °C	—	105 °C
power dissipation	—	—	700 mW
input bias current	-1 µA	-55 nA	—	VIN+ = 0 V, Ta = 25 °C
isolation voltage	—	5 kV	—
propagation delay	—	1.9 µs	2.3 µs	VIN+ = 0 to 200 mV/μs stepCL = 15 pF
rise time	—	1.7 µs	—	VIN+ = 0 to 200 mV/μs stepCL = 15 pF
fall time	—	1.7 µs	—	VIN+ = 0 to 200 mV/μs stepCL = 15 pF
output voltage high	—	2.5 V	—	VIN+ = 400 mV, Ta = 25 °C
output voltage low	—	900 µV	—	VIN+ = -400 mV, Ta = 25 °C
cmti	15 GV/s	20 GV/s	—	VCM = 1 kV, Ta = 25 °C
output count	—	1	—
channel count	—	1	—

03 — Alternatives

Closest matches to TLP7820

MOC3010M 1.4× lower operating temperature, 1.4× higher power dissipation, 1.2× lower isolation voltage

MOC3063S 20.0× lower cmti, 3.5× higher power dissipation, 1.1× lower operating temperature

TCUT1350X01 9.4× higher fall time, 5.3× higher rise time, 1.9× lower power dissipation

TLP185GB 2.8× higher power dissipation, 2.0× higher isolation voltage, 1.8× higher fall time

LTV-354T 2.4× higher power dissipation, 2.4× higher rise time, 1.8× higher fall time

4N35 1.4× lower operating temperature, similar power dissipation, similar isolation voltage

LTV-217-G 1.3× lower isolation voltage, 1.2× lower operating temperature, similar power dissipation

PC817 3.5× higher rise time, 2.9× higher fall time, 2.8× higher power dissipation

04 — FAQ

Frequently asked questions

What is the channel count of the TLP7820?

The channel count is 1.

What is the common-mode rejection ratio (CMRR) of the TLP7820?

The CMRR is 80 dB.

What is the common-mode transient immunity (cmti) of the TLP7820?

The common-mode transient immunity is 20 GV/s at VCM = 1 kV and Ta = 25 °C.

What is the fall time of the TLP7820?

The fall time is 1.7 µs with VIN+ = 0 to 200 mV/μs step and CL = 15 pF.

What is the input bias current when VIN+ = 0 V and Ta = 25 °C?

The input bias current is -55 nA.

What is the input offset voltage of the TLP7820 at Ta = 25 °C?

The input offset voltage is 900 µV at Ta = 25 °C.

What is the input offset voltage drift of the TLP7820?

The input offset voltage drift is 2 µV/°C.

What is the isolation voltage of the TLP7820?

The isolation voltage is 5 kV.