Features
- Bus voltage sense range: 0V to 60V
- Voltage gain error: 0.05%
- Current gain error: 0.05%
- High or low (RTN) side sensing
- Bidirectional current sensing
- Auxiliary low voltage input channel
- ΔΣADC, 16-bit native resolution
- Programmable averaging modes
- Internal 3.3V regulator
- Internal temperature sense
- Over-voltage/undervoltage and current fault monitoring with 500ns detection delay
- 8-bit voltage output DAC (20 Pin QFN)
- I2C/SMBus/PMBus interface that handles 1.2V supply
- 55 I2C slave addresses
Description
The ISL28025 is a bidirectional high-side and low-side digital current sense and voltage monitor with a serial interface. The device monitors power supply current and voltage, which provides the digital results along with calculated power. The ISL28025 provides tight accuracy of less than 0.1% for both voltage and current monitoring.
The VCC power can either be externally supplied or internally regulated, which allows the ISL28025 to handle a common-mode input voltage range from 0V to 60V. The wide range permits the device to handle telecom, automotive and industrial applications with minimal external circuitry.
An 8-bit voltage DAC enable DC/DC converter output voltage margining (20 Pin QFN) Fault indication includes Bus Voltage window and over-current fast fault logic indication. The ISL28025 includes an integrated temperature sensor for monitoring.
The ISL28025 serial interface is PMBus compatible and operates down to 1.2V. It draws an average current of just 1.3mA and is available in the space saving 16 ball WLCSP package. It is also available in a 20 lead QFN 4x4 (1.85SQmm EPAD) The parts operate across the full industrial temperature range from -40°C to +125°C.
Parameters
| Attributes | Value |
|---|---|
| VS (Min) (V) | 3 |
| VS (Max) (V) | 5.5 |
| PSRR (db) | 127 |
| CMRR (dB) | 134 |
| Common Mode Input Range (V) | 12, 60 |
| Gain Error / Measurement Error (Max) | 0.25 |
| IS per Amp (mA) | 1 |
| Offset Voltage (Max) (mV) | 0.05 |
| Qualification Level | Standard |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| QFN | 4.0 x 4.0 x 0.90 | 20 | 0.5 |
| WLCSP-TCURDL | 2.2 x 2.2 x 0.60 | 16 | 0.5 |
Application Block Diagrams
 | 20-28 Cell Battery Pack (Up to 118V) Scalable 20-28 cell battery pack design with optional Bluetooth connectivity. |
 | DC Motor Driver Pmod HVPAK™ motor drive offers flexible, easy integration with protection, reducing development time. |
 | High-Precision Peltier Cooler System Precision-driven Peltier cooling system with real-time control, reduced BOM, and seamless industrial integration. |
Additional Applications
- Data processing servers
- DC power distribution
- Telecom equipment
- Portable communication equipment
- DC/DC, AC/DC converters
- Automotive power
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Support Communities
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ISL28025 power monitor
In our new product wer using an ISL28025/23 power monitor. Usually we use this component for DC operation but we are wondering if it be able to mesure a short pulse of DC current from 0 to 5A The duration of this event is 50ms. How many samples ...
Jul 24, 2023 -
Part number suffix -TS2490 vs -T or -T7A
Hello. We are currently using the PN ISL28025FR12Z-T in production. One of our supply sources have this part number, but with a supplemental suffix (ISL28025FR12Z-TS2490). Now, I have seen both these PN listed in PCN 20029A and PCN21005, but I can't identify the exact difference between the ...
Oct 29, 2021
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