PAC17XX

Part: PAC1710/20 — Microchip Technology Type: High-Side Current-Sense Monitor with Power Calculation

Description: Single and dual high-side bidirectional current sensing monitors with precision voltage measurement capabilities, capable of measuring VSOURCE voltages from 0V to 40V, calculating average power, and communicating via SMBus 2.0.

Operating Conditions:

• Supply voltage (V DD): 3.0V to 5.5V
• Operating ambient temperature: -40 to +85°C
• V SOURCE voltage range: 0V to 40V
• Current sense full scale range: ±10 mV, ±20 mV, ±40 mV, ±80 mV

Absolute Maximum Ratings:

• Max V DD pin voltage: 6.0V
• Max voltage on SENSE- and SENSE+ pins: -42 to 42V
• Max input current to any pin except V DD: +10 mA
• Max storage temperature: -55 to 150°C

Key Specs:

• V DD Pin Supply Current (PAC1710): 10 μA (typ) at one conversion per second
• V DD Standby Current: 5.5 μA (typ)
• Current measurement accuracy (positive range): ±1% FSR (max) for FSR = 0 to +10 mV
• V SOURCE Error: ±0.3% FSV (max)
• Total Power Ratio Measurement Error (positive range): ±1% FSR (max)
• SENSE+/SENSE- Pins Common-Mode Voltage Range: 0V to 40V
• V SENSE Differential Input Voltage Range: -80 mV to +80 mV
• SMBus Clock Frequency: 10 kHz to 400 kHz

Features:

• Single and Dual High-Side Current Sensor
• Measures V SOURCE voltages
• Calculates Power
• Bidirectional Current Sensing
• Auto-Zero Input Offset Voltage
• Digital Averaging
• ALERT Output for Voltage and Current out of Limit Transients
• SMBus 2.0 Communications Interface
• Address selectable by resistor decode

Applications:

• Notebook and Desktop Computers
• Industrial
• Power Management Systems
• Embedded Applications
• Servers

Package:

• 10-Lead 3 x 3 mm VDFN package

• Single and Dual High-Side Current Sensor
• -Current measurement is integrated over 2.5 ms to 2.6 seconds with up to 11-bit resolution
• -1% current measurement accuracy in positive range
• -Measures V SOURCE voltages
• Calculates Power
• VSOURCE Voltage Range 0V to 40V
• Bidirectional Current Sensing
• Auto-Zero Input Offset Voltage
• Digital Averaging
• -Adjustable sampling time and resolution
• 5 μA Typical Standby Current
• Programmable Sense Voltage Range
• -±10 mV, ±20 mV, ±40 mV, and ±80 mV
• Power Supply Range 3.0V to 5.5V
• Wide Temperature Operating Range: -40°C to +85°C
• ALERT Output for Voltage and Current out of Limit Transients Between Sampling Interval
• SMBus 2.0 Communications Interface
• -Block Read and Block Write
• -Address selectable by resistor decode
• Sample Time Configurable from 2.5 ms to 320 ms
• -With averaging effective sampling times up to 2.6 seconds
• 10-Lead 3 x 3 mm VDFN package

• Notebook and Desktop Computers
• Industrial
• Power Management Systems
• Embedded Applications
• Servers

The descriptions of the pins are listed in Table 3-1.

TABLE 3-1: PIN DESCRIPTIONS

• Voltage on SENSE- and SENSE+ pins.............................................................................................................-42 to 42V
• Voltage on any other pin to GND..................................................................................................-GND-0.3 to V DD +0.3V
• Voltage between Sense pins (\
• Input current to any pin except V DD ......................................................................................................................+10 mA
• Output short-circuit current..............................................................................................................................Continuous
• Package Power Dissipation (Note) ............................................................................................ 0.5W up to T A = 85°C/W
• Junction to Ambient ( J-A ) .....................................................................................................................................78°C/W
• Operating Ambient Temperature Range .........................................................................................................-40 to 85°C
• Storage Temperature Range.........................................................................................................................-55 to 150°C
• ESD Rating - SMCLK, SMDATA, and ALERT pins - HBM.....................................................................................8000V
• SD Rating - all other pins - HBM............................................................................................................................2000V

† Notice : Stresses above those listed under 'Absolute Maximum Ratings' may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure above maximum rating conditions for extended periods may affect device reliability.

Note: The Package Power Dissipation specification assumes a recommended thermal via design consisting of a 2 x 3 matrix of 0.3 mm (12 mil) vias at 0.9 mm pitch connected to the ground plane with a 1.6 mm x 2.3 mm thermal landing.

This pad should be connected to ground for noise immunity.

NOTES: