2015-2016 Microchip Technology Inc. DS20005386B-page 1
PAC1710/20
Features
• 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
•V
SOURCE
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
Applications
• Notebook and Desktop Computers
• Industrial
• Power Management Systems
• Embedded Applications
•Servers
Description
The PAC1710/20 are single and dual high-side
bidirectional current sensing monitors with precision
voltage measurement capabilities. Each sensor
measures the voltage developed across an external
sense resistor to represent the high-side current of a
battery or voltage regulator. The PAC1710/20 also
measures the SENSE+ pin voltage and calculates
average power over the integration period. The
PAC1710/20 can be programmed to assert the ALERT
pin when high and low limits are exceeded for Current
Sense and Bus Voltage.
The PAC1710/20 device is good for measuring
dynamic power. The long integration time allows for
extending system polling cycles without losing any
power consumption information. In addition the alert
ensures that transient events are captured between the
polling cycles.
Available in a RoHS compliant 3 x 3 mm 10-pin VDFN
package.
Package Types
SENSE2+
†
SENSE1-
SENSE2-
†
SMCLK
SMDATA
1
2
3
4
10
9
8
7
ALERT
V
DD
SENSE1+
EP
11
65
ADDR_SEL
GND
PAC1710/20
3x3 VDFN*
*Includes Exposed Thermal Pad (EP), see Tabl e 3 - 1
†PAC1720 only.
Single and Dual High-Side Current-Sense Monitor with
Power Calculation
