INA169NA/3K Power Path Management IC Current & Power Monitors & Regulators Hi-Sd Msmnt Current Shunt Mntr Crnt Otp
INA169NA/3K Power Path Management IC Current & Power Monitors & Regulators Hi-Sd Msmnt Current Shunt Mntr Crnt Otp
1 Features
- Complete Unipolar High-Side Current Measurement Circuit
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Wide Supply and Common-Mode Range
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INA139: 2.7 V to 40 V
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INA169: 2.7 V to 60 V
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Independent Supply and Input Common-Mode Voltages
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Single Resistor Gain Set
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Low Quiescent Current: 60 μA (Typical)
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5-Pin, SOT-23 Packages
2 Applications
• Current Shunt Measurement:
– Automotive, Telephone, Computers
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Portable and Battery-Backup Systems
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Battery Chargers
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Power Management
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Cell Phones
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Precision Current Source
3 Description
The INA139 and INA169 are high-side, unipolar, current shunt monitors. Wide input common-mode voltage range, high-speed, low quiescent current, and tiny SOT-23 packaging enable use in a variety of applications.
Input common-mode and power-supply voltages are independent and can range from 2.7 V to 40 V for the INA139 and 2.7 V to 60 V for the INA169. Quiescent current is only 60 μA, which permits connecting the power supply to either side of the current measurement shunt with minimal error.
The device converts a differential input voltage to a current output. This current is converted back to a voltage with an external load resistor that sets any gain from 1 to over 100. Although designed for current shunt measurement, the circuit invites creative applications in measurement and level shifting.
Both the INA139 and INA169 are available in 5-pin SOT-23 packages. The INA139 device is specified for the –40°C to +125°C temperature range, and the INA169 is specified from –40°C to +85°C.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
INA139 |
SOT-23 (5) |
2.90 mm × 1.60 mm |
|
INA169 |
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