ISO808

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Galvanic isolated octal high-side power solid state relay for high inductive loads

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Product overview

Description

The ISO808, ISO808-1 (PowerSO-36) and ISO808Q, ISO808Q-1 (TFQFPN32) are galvanic isolated 8-channel drivers featuring a low supply current. Each driver contains 2 independent galvanic isolated voltage domains (VCC and VDD for the Process and Control Logic stages, respectively). The ICs are intended for driving any kind of load with one side connected to ground.

Active channel current limitation (OVL) combined with thermal shutdown (OVT), independent for each channel, protects the device against overload.

Built-in thermal shutdown protects each channel from overtemperature and overload: each overheated channel automatically turns OFF after its junction temperature triggers the protection threshold (TJSD). The channel turns back ON if its junction temperature decreases lower than restart threshold (TJR).

An additional case temperature sensor protects the whole chip against overtemperature (OVC event): if the case temperature triggers the TCSD threshold then overloaded channels are turned OFF and restart only when case temperature decreased down to the reset threshold (TCR). Non overloaded channels continue to operate normally.

Other embedded functions are loss of ground protection, VCC and VDD UVLOs (with hysteresis), and watchdog.

An internal circuit provides an OR-wired not latched OVT that is reported on the common FAULT indicator pin. FAULT is an open drain, active low, fault indication pin.

The Synchronous Control Mode (by driving SYNC and LOAD pins independently) is used to reduce the jittering of the outputs and to drive at the same time the outputs of different devices.

  • All features

    • VCC(AMR) = 45 V
    • Wide process side op. range VCC = 9.2 to 36 V
    • RDS(on)  = 0.125 Ω per channel (TYP)
    • Fast demagnetization of inductive loads VDEMAG(TYP) = VCC - 54 V
    • Per channel process side op. current
      • ISO808/ISO808Q IOUT < 0.7 A
      • ISO808-1/ISO808Q-1 IOUT < 1 A
    • Low process and logic sides supply current
    • Under-voltage shut down with auto restart and hysteresis
    • Logic side 5 V and 3.3 V TTL/CMOS and MCU compatible I/Os
    • Common output enable/disable pin
    • Reset function for IC outputs disable
    • High common mode transient immunity
    • Short circuit protection on output channels
      • ISO808/ISO808Q ILIM(MIN) = 0.7 A
      • ISO808-1/ISO808Q-1 ILIM(MIN) = 1 A
    • Per-channel over-temperature protection with thermal independence of separate channels
    • Case over-temperature protection
    • Over-voltage protection (VCC clamping)
    • Loss of GND and VCC protections
    • Common fault open drain diagnostic
    • Designed to meet IEC 61000-4-2, IEC 61000- 4-4, IEC 61000-4-5 and IEC 61000-4-8
    • UL1577 and UL508 certified
    • Safety limits according to IEC 60747-17 (former VDE 0884-11)
    • PowerSO-36 and TFQFPN32 Package

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STMicroelectronics - ISO808

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ISO808
Active
PowerSO 36 Industrial Ecopack2
ISO808QTR
Active
TFQFPN 11.0X9.0X1.05 32L Industrial Ecopack3
ISO808TR
Active
PowerSO 36 Industrial Ecopack2

ISO808

Package:

PowerSO 36

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO 36

Grade

Industrial

RoHS Compliance Grade

Ecopack2

ISO808QTR

Package:

TFQFPN 11.0X9.0X1.05 32L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

TFQFPN 11.0X9.0X1.05 32L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

ISO808TR

Package:

PowerSO 36

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSO 36

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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ISO808QTR
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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors