MAX9644 Datasheet, PDF (1/11 Pages) Maxim Integrated Products – Low-Power Comparators with Precision Reference in 4-Bump UCSP

19-5803; Rev 0; 3/11
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Low-Power Comparators with Precision
Reference in 4-Bump UCSP
General Description
The MAX9644/MAX9645/MAX9646 are small, single com-
parators, ideal for a wide variety of portable electronics
applications such as cell phones, media players, and
notebooks that have extremely tight board space and
power constraints. These comparators are offered in both
a miniature 4-bump UCSP™ package with a 1mm x 1mm
footprint (as small as two 0402 resistors) and a
5-pin SOT23 package.
The ICs feature an input voltage range of -0.3V to
+5.5V, independent of supply voltage. These devices
maintain high impedance at the inputs even when pow-
ered down (V_CC or V_REF = 0V). They also feature inter-
nal filtering to provide high RF immunity.
The ICs have an internal 0.2V reference. These devices
feature either a push-pull or an open-drain output. They
consume only 700nA (max) supply current and operate
down to V_CC = 1V over the extended -40°C to +85°C tem-
perature range.
Applications
Cell Phones
Portable Media Players
Electronic Toys
Notebook Computers
Portable Medical Devices
Features
o Tiny, 1mm x 1mm x 0.6mm 4-Bump UCSP
Footprint = Two 0402 Resistors
Also Available in a 5-Pin SOT23 Package
o Ultra-Low Operating Current (100nA max)
o -0.3V to +5.5V Input Voltage Range
o Internal 0.2V Reference Trimmed to 1% Accuracy
o 15µs Propagation Delay
o -40°C to +85°C Extended Temperature Range
Ordering Information
PART
PIN-PACKAGE
TOP MARK
MAX9644EBS+G45 4 UCSP
+AGL
MAX9644EUK+
5 SOT23
+AFJN
MAX9645EBS+G45 4 UCSP
+AGM
MAX9645EUK+
5 SOT23
+AFJO
MAX9646EBS+G45 4 UCSP
+AGN
MAX9646EUK+
5 SOT23
+AFJP
Note: All devices are specified over the extended -40°C to
+85°C operating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
G45 = Protective die coating.
MAX9644
MAX9645
MAX9646
PART
REFERENCE VOLTAGE (V)
0.2
0.2
0.2
INPUT
Noninverting
Inverting
Noninverting
Selector Guide
OUTPUT
Open drain
Open drain
Push-pull
UCSP is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.