max9938feuk Maxim Integrated Products, Inc., max9938feuk Datasheet

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max9938feuk

Manufacturer Part Number
max9938feuk
Description
1?a, 4-bump Ucsp/sot23,
Manufacturer
Maxim Integrated Products, Inc.
Datasheet

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The MAX9938 high-side current-sense amplifier offers
precision accuracy specifications of V
500μV (max) and gain error less than 0.5% (max).
Quiescent supply current is an ultra-low 1μA. The
MAX9938 fits in a tiny, 1mm x 1mm UCSP™ package
size or a 5-pin SOT23 package, making the part ideal for
applications in notebook computers, cell phones, PDAs,
and all battery-operated portable devices where accura-
cy, low quiescent current, and small size are critical.
The MAX9938 features an input common-mode voltage
range from 1.6V to 28V. These current-sense amplifiers
have a voltage output and are offered in three gain ver-
sions: 25V/V (MAX9938T), 50V/V (MAX9938F), and
100V/V (MAX9938H).
The three gain selections offer flexibility in the choice of
the external current-sense resistor. The very low 500μV
(max) input offset voltage allows small 25mV to 50mV
full-scale V
full-current measurement.
The MAX9938 is offered in tiny 4-bump, UCSP (1mm x
1mm x 0.6mm footprint), 5-pin SOT23, and 6-pin μDFN
(2mm x 2mm x 0.8mm) packages specified for operation
over the -40°C to +85°C extended temperature range.
19-4110; Rev 1; 9/08
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.
Cell Phones
PDAs
Power Management Systems
Portable/Battery-Powered Systems
Notebook Computers
DRAWINGS NOT TO SCALE
SENSE
GND
RS+
________________________________________________________________ Maxim Integrated Products
voltage for very low voltage drop at
(BUMPS ON BOTTOM)
A1
B1
MAX9938T/F/H
General Description
TOP VIEW
UCSP
A2
B2
Precision Current-Sense Amplifier
Applications
RS-
OUT
OS
less than
GND
RS+
5
1
1µA, 4-Bump UCSP/SOT23,
MAX9938T/F/H
SOT23
GND
2
♦ Ultra-Low Supply Current of 1µA (max)
♦ Low 500µV (max) Input Offset Voltage
♦ Low < 0.5% (max) Gain Error
♦ Input Common Mode: +1.6V to +28V
♦ Voltage Output
♦ Three Gain Versions Available
♦ Tiny 1mm x 1mm x 0.6mm, 4-Bump UCSP,
+ Denotes a lead-free/RoHS-compliant package.
Note: All devices are specified over the -40°C to +85°C
extended temperature range.
UCSP is a trademark of Maxim Integrated Products, Inc.
MAX9938TEBS+
MAX9938FEBS+
MAX9938HEBS+ 4 UCSP
MAX9938TEUK+
MAX9938FEUK+
MAX9938HEUK+ 5 SOT23
MAX9938FELT+
25V/V (MAX9938T)
50V/V (MAX9938F)
100V/V (MAX9938H)
Packages
5-Pin SOT23, or 2mm x 2mm 6-Pin µDFN
RS-
OUT
PART
4
3
GND
OUT
N.C.
PIN-
PACKAGE
4 UCSP
4 UCSP
5 SOT23
5 SOT23
6 μDFN
2
1
3
Ordering Information
(PADS ON BOTTOM)
MAX9938FELT
Pin Configurations
TOP VIEW
μDFN
GAIN (V/V)
100
100
25
50
25
50
50
5
6
4
Features
RS-
N.C.
RS+
TOP MARK
+AFFB
+AFFC
+AFFD
+AGD
+ACM
+AGE
+AGF
1

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max9938feuk Summary of contents

Page 1

... SOT23, or 2mm x 2mm 6-Pin µDFN Packages PART MAX9938TEBS+ MAX9938FEBS+ MAX9938HEBS+ 4 UCSP MAX9938TEUK+ MAX9938FEUK+ Applications MAX9938HEUK+ 5 SOT23 MAX9938FELT+ + Denotes a lead-free/RoHS-compliant package. Note: All devices are specified over the -40°C to +85°C extended temperature range. UCSP is a trademark of Maxim Integrated Products, Inc. ...

Page 2

UCSP/SOT23, Precision Current-Sense Amplifier ABSOLUTE MAXIMUM RATINGS RS+, RS- to GND....................................................-0.3V to +30V OUT to GND .............................................................-0.3V to +6V RS+ to RS- ...........................................................................±30V Short-Circuit Duration: OUT to GND ..........................Continuous Continuous Input Current (Any Pin)..................................±20mA Continuous Power Dissipation (T ...

Page 3

Precision Current-Sense Amplifier ( 3.6V +25°C, unless otherwise noted.) RS+ RS- A INPUT OFFSET VOLTAGE HISTOGRAM -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 INPUT OFFSET VOLTAGE ...

Page 4

UCSP/SOT23, Precision Current-Sense Amplifier ( 3.6V +25°C, unless otherwise noted.) RS+ RS vs. V OUT SENSE (SUPPLY = 1.6V) 1.8 1.6 1.4 1 100 1 0.8 ...

Page 5

Precision Current-Sense Amplifier ( 3.6V +25°C, unless otherwise noted.) RS+ RS- A LARGE-SIGNAL PULSE RESPONSE (GAIN = 100) V SENSE V OUT 20μs/div PIN UCSP SOT23 µDFN ...

Page 6

UCSP/SOT23, Precision Current-Sense Amplifier I LOAD V = 1.6V TO 28V BATT Detailed Description The MAX9938 unidirectional high-side, current-sense amplifier features a 1.6V to 28V input common-mode range. This feature allows the monitoring of current out of a ...

Page 7

Precision Current-Sense Amplifier OUT Swing vs. V The MAX9938 is unique since the supply voltage is the input common-mode voltage (the average voltage at RS+ and RS-). There is no separate V pin. Therefore, the OUT voltage swing is limited ...

Page 8

UCSP/SOT23, Precision Current-Sense Amplifier I LOAD V = 1.6V TO 28V BATT RS 10kΩ OUT GND Figure 1. Bidirectional Application Bidirectional Application Battery-powered systems may require a precise bidi- rectional current-sense amplifier to accurately ...

Page 9

Precision Current-Sense Amplifier For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE UCSP 5 SOT23 6 μDFN _______________________________________________________________________________________ 1µA, 4-Bump UCSP/SOT23, Package Information PACKAGE CODE R41A1+1 U5-2 L622+1 DOCUMENT NO. 21-0242 21-0057 ...

Page 10

UCSP/SOT23, Precision Current-Sense Amplifier For the latest package outline information and land patterns www.maxim-ic.com/packages. 10 ______________________________________________________________________________________ Package Information (continued) ...

Page 11

Precision Current-Sense Amplifier For the latest package outline information and land patterns www.maxim-ic.com/packages. D AAA AAA PIN 1 SAMPLE INDEX AREA MARKING 7 A1 ______________________________________________________________________________________ 1µA, 4-Bump UCSP/SOT23, Package Information (continued ...

Page 12

UCSP/SOT23, Precision Current-Sense Amplifier For the latest package outline information and land patterns www.maxim-ic.com/packages. COMMON DIMENSIONS SYMBOL MIN. NOM. A 0.70 0.75 A1 0.15 0.20 A2 0.020 0.025 D 1.95 2.00 E 1.95 2.00 L 0.30 ...

Page 13

... Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2008 Maxim Integrated Products 1µA, 4-Bump UCSP/SOT23, DESCRIPTION Initial release Added μDFN package information is a registered trademark of Maxim Integrated Products, Inc. Revision History PAGES CHANGED — ...

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