MAX9610 Maxim, MAX9610 Datasheet

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MAX9610

Manufacturer Part Number
MAX9610
Description
The MAX9610 high-side current-sense amplifier offers precision accuracy specifications of VOS less than 500µV (max) and gain error less than 0
Manufacturer
Maxim
Datasheet

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The MAX9610 high-side current-sense amplifier offers
precision accuracy specifications of V
500μV (max) and gain error less than 0.5% (max). This
device features an ultra-low 1μA quiescent supply cur-
rent. The MAX9610 fits in a tiny, 1mm x 1.5mm μDFN
package or a 5-pin SC70 package, making this part
ideal for applications in notebook computers, cell
phones, cameras, PDAs, and all lithium-ion (Li+) bat-
tery-operated portable devices where accuracy, low
quiescent current, and small size are critical.
The MAX9610 features an input voltage range (com-
mon mode) from 1.6V to 5.5V. This input range is excel-
lent for monitoring the current of a single-cell,
lithium-ion battery, which at full charge is 4.2V, typically
3.6V in normal use, and less than 2.9V when ready to
be recharged. These current-sense amplifiers have a
voltage output and are offered in three gain versions:
25V/V (MAX9610T), 50V/V (MAX9610F), and 100V/V
(MAX9610H).
The three gain versions 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-load current measurement.
The MAX9610 is offered in tiny 6-pin μDFN, (1mm x
1.5mm x 0.8mm footprint) and 5-pin SC70 packages,
specified for operation over the -40°C to +85°C temper-
ature range.
For a very similar 1.6V to 28V input voltage device in a
4-bump UCSP™ package (1mm x 1mm x 0.6mm), refer
to the MAX9938 data sheet.
19-4342; Rev 0; 10/08
Pin Configurations appear at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
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
Cameras
Portable Li+ Battery Powered Systems
3.3V and 5V Power Management Systems
PDAs
USB Ports
SENSE
________________________________________________________________ Maxim Integrated Products
voltage for very low voltage drop at
General Description
1µA, µDFN/SC70, Lithium-Ion Battery,
Precision Current-Sense Amplifier
Applications
OS
less than
♦ 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 +5.5V
♦ Voltage Output
♦ Three Gain Versions Available
♦ Tiny µDFN (1mm x 1.5mm x 0.8mm) and
* All devices are specified over the -40°C to +85°C extended
temperature range.
+ Denotes a lead-free/RoHS-compliant package.
T = Tape and reel.
MAX9610TELT+T
MAX9610FELT+T
MAX9610HELT+T
MAX9610TEXK+T
MAX9610FEXK+T
MAX9610HEXK+T
SC70 Packages
1.6V to 5.5V
25V/V (MAX9610T)
50V/V (MAX9610F)
100V/V (MAX9610H)
V
BATT
PART*
=
10kΩ
R
Typical Operating Circuit
OUT
I
LOAD
P
PIN-
PACKAGE
6 μDFN
6 μDFN
6 μDFN
5 SC70
5 SC70
5 SC70
R
GND
1
Ordering Information
RS+
R
MAX9610
SENSE
R
1
RS-
GAIN
(V/V)
OUT
100
100
25
50
25
50
V
DD
Features
= 3.3V
LOAD
ADC
TOP MARK
μC
ATG
ATE
ATF
OU
OS
OT
1

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MAX9610 Summary of contents

Page 1

... V 500μV (max) and gain error less than 0.5% (max). This device features an ultra-low 1μA quiescent supply cur- rent. The MAX9610 fits in a tiny, 1mm x 1.5mm μDFN package or a 5-pin SC70 package, making this part ideal for applications in notebook computers, cell ...

Page 2

... T RS +25°C, gain = 25, 50, 100 (Note Gain = 25 -40°C < T < +85°C A Gain = 100 MAX9610T G MAX9610F MAX9610H T = +25°C, gain = 25, 50, 100 (Note Gain = 25, 50 -40°C < T < +85°C A Gain = 100 +25°C (Note 5) OUT A ...

Page 3

... S SENSE t 1% final value 25mV ON SENSE = +25°C. All temperature limits are guaranteed by design. A and calculating the error of the slope, vs. the ideal: SENSE with V = 3.6V/Gain. OUT SENSE Typical Operating Characteristics MAX9610F GAIN ACCURACY HISTOGRAM -0.2 -0.15 -0.1 -0.05 0 0.05 0.1 0.15 GAIN ACCURACY (%) A MIN ...

Page 4

Lithium-Ion Battery, Precision Current-Sense Amplifier ( 3.6V +25°C.) RS+ RS- A SUPPLY CURRENT vs. COMMON-MODE VOLTAGE 1.00 0.90 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0 1.6 2.1 2.6 3.1 3.6 4.1 ...

Page 5

... OUT 200mV/div MAX9610 toc15 5mV/div V SENSE V 200mV/div OUT MAX9610 toc17 50mV/div V SENSE 1V/div V OUT SMALL-SIGNAL RESPONSE MAX9610 toc14 10mV/div 200mV/div 10μs/div LARGE-SIGNAL RESPONSE MAX9610 toc16 100mV/div 1V/div 10μs/div LARGE-SIGNAL RESPONSE G = 100 MAX9610 toc18 20mV/div 1V/div 10μs/div 5 ...

Page 6

... Take this into consideration when choosing the resistor value and its power dissipation (wattage) rating. Also, the sense resistor’s value might drift allowed to heat up excessively. The precision V the MAX9610 allows the use of small sense resistors to reduce power dissipation and reduce hot spots ...

Page 7

... Measurements of the two separate outputs with respect to GND yield an accurate measure of the charge and discharge currents, respectively (Figure 1). constant during OUT R SENSE RS+ RS OUT R MAX9610 OUT GND Typical Application Circuit Bidirectional Application TO WALL-CUBE/ CHARGER RS+ RS- LOAD 3.3V DD MICRO- CONTROLLER OUT ADC MAX9610 ADC 7 ...

Page 8

... Lithium-Ion Battery, Precision Current-Sense Amplifier Pin Configurations TOP VIEW (PINS ON BOTTOM) RS+ N. MAX9610T/F GND N.C. 1mm x 1.5mm μDFN TOP VIEW RS+ 5 MAX9610T/F GND GND OUT 2mm x 2.2mm SC70 (DIAGRAMS NOT TO SCALE.) 8 _______________________________________________________________________________________ PROCESS: BiCMOS RS OUT RS Chip Information ...

Page 9

... Lithium-Ion Battery, Precision Current-Sense Amplifier For the latest package outline information and land patterns www.maxim-ic.com/packages. PACKAGE TYPE 6 μDFN 5 SC70 TOPMARK PIN 1 D MARK TOP VIEW -DRAWING NOT TO SCALE- _______________________________________________________________________________________ PACKAGE CODE L611+1 X5 ...

Page 10

... Lithium-Ion Battery, Precision Current-Sense Amplifier For the latest package outline information and land patterns www.maxim-ic.com/packages. TABLE 1 Translation Table for Calendar Year Code Calendar Year 2005 2006 Legend: Marked with bar TABLE 2 Translation Table for Payweek Binary Coding ...

Page 11

... For the latest package outline information and land patterns www.maxim-ic.com/packages. Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. ...

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