MAX9643 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX9643 Datasheet PDF : 12 Pages
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MAX9643
EVALUATION KIT AVAILABLE
60V High-Speed Precision Current-Sense Amplifier
General Description
The MAX9643 is a high-speed 60V precision unidirec-
tional current-sense amplifier ideal for a wide variety of
power-supply control applications. Its high signal band-
width allows its use within DC-DC switching converter
power-supply control loops with minimal phase delay.
The IC also features 130µV (max) precision input offset
voltage, allowing small sense resistors to be used in
applications where efficiency is important and when wide
dynamic-range current measurement is needed.
High DC CMRR and AC CMRR make it easy to use in
a wide variety of aggressive environments. The device
is available in fixed gains of 2.5V/V and 10V/V. It is also
available in a small, 8-pin TDFN (2mm x 3mm) package
and is rated over the -40°C to +125°C temperature range.
Applications
●● Industrial Power Supplies
●● GSM Base Station Power Supply
●● High-Brightness LED Control
●● H-Bridge Motor Control
Benefits and Features
●● Supports High-Voltage Applications
• Wide Input VCM = -1.5V to +60V
●● Delivers High-Speed Operation
• 15MHz Bandwidth
●● Increases System Accuracy
• Precision VOS = 130μV (max)
●● -40°C to +125°C Specified Temperature Range
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer
to www.maximintegrated.com/MAX9643.related.
Typical Operating Circuit
RS+
RS-
CP1
CP2
OUT
VEE
VCC
MAX9643 GND
BOOST
POWER-SUPPLY
CONTROL
LOAD
19-5889; Rev 4; 4/15
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