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MAX9610FEXK+T

P1-P3P4-P6P7-P9P10-P11
General Description
The MAX9610 high-side current-sense amplifier offers
precision accuracy specifications of V
OS
less than
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
SENSE
voltage for very low voltage drop at
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.
Applications
Cell Phones
Cameras
Portable Li+ Battery Powered Systems
3.3V and 5V Power Management Systems
PDAs
USB Ports
Features
♦ 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
25V/V (MAX9610T)
50V/V (MAX9610F)
100V/V (MAX9610H)
♦ Tiny µDFN (1mm x 1.5mm x 0.8mm) and
SC70 Packages
MAX9610
1µA, µDFN/SC70, Lithium-Ion Battery,
Precision Current-Sense Amplifier
________________________________________________________________
Maxim Integrated Products
1
19-4342; Rev 0; 10/08
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.
Pin Configurations appear at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
MAX9610
P
R
OUT
10kΩ
GND
OUT
ADC
μC
LOAD
V
DD
= 3.3V
RS-
RS+
R
SENSE
I
LOAD
V
BATT
=
1.6V to 5.5V
R
1
R
1
Typical Operating Circuit
Ordering Information
PART*
PIN-
PACKAGE
GAIN
(V/V)
TOP MARK
MAX9610TELT+T 6 μDFN 25 OU
MAX9610FELT+T 6 μDFN 50 OS
MAX9610HELT+T 6 μDFN 100 OT
MAX9610TEXK+T 5 SC70 25 ATG
MAX9610FEXK+T 5 SC70 50 ATE
MAX9610HEXK+T 5 SC70 100 ATF
*
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.
MAX9610
1µA, µDFN/SC70, Lithium-Ion Battery,
Precision Current-Sense Amplifier
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
RS+
= V
RS-
= 3.6V, V
SENSE
= (V
RS+
- V
RS-
) = 0, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
(Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
RS+, RS- to GND......................................................-0.3V to +6V
OUT to GND .............................................................-0.3V to +6V
RS+ to RS- .............................................................................±6V
Short-Circuit Duration: OUT to GND or RS+ ..............Continuous
Continuous Input Current (Any Pin)..................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SC70 (derate 3.1mW/°C above +70°C)..............247mW
6-Pin μDFN (derate 2.1mW/°C above +70°C) .............168mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Package Reflow Soldering Temperature .........................+260°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
RS+
= 3.6V, T
A
= +25°C 0.6 1.0
V
RS+
= 3.6V, -40°C < T
A
< +85°C 1.4
V
RS+
= 5.5V, T
A
= +25°C 0.75 1.2
Supply Current
(Note 2)
I
CC
V
RS+
= 5.5V, -40°C < T
A
< +85°C 1.6
μA
Common-Mode Input Range V
CM
Guaranteed by CMRR,
-40°C < T
A
< +85°C
1.6 5.5 V
Common-Mode Rejection Ratio CMRR 1.6V < V
RS+
< 5.5V, -40°C < T
A
< +85°C 80 104 dB
T
A
= +25°C, gain = 25, 50, 100 (Note 3) ±100 ±500
Gain = 25, 50 ±600Input Offset Voltage V
OS
-40°C < T
A
< +85°C
Gain = 100 ±700
μV
MAX9610T 25
MAX9610F 50Gain G
MAX9610H 100
V/V
T
A
= +25°C, gain = 25, 50, 100 (Note 4) ±0.1 ±0.5
Gain = 25, 50 ±0.8
Gain Error GE
-40°C < T
A
< +85°C
Gain = 100 ±1
%
Output Resistance R
OUT
T
A
= +25°C (Note 5) 7.0 10 13.2 kΩ
G = 25 2.5 15
G = 50 5 30
OUT Low Voltage V
OL
G = 100 10 70
mV
OUT High Voltage V
OH
V
OH
= V
RS-
- V
OUT
(Note 6) 0.1 0.2 V
MAX9610
1µA, µDFN/SC70, Lithium-Ion Battery,
Precision Current-Sense Amplifier
_______________________________________________________________________________________ 3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
V
SENSE
= 50mV, G = 25 170
V
SENSE
= 50mV, G = 50 110Small-Signal Bandwidth BW
V
SENSE
= 50mV, G = 100 60
kHz
Output Settling Time t
S
1% final value, V
SENSE
= 25mV 35 μs
Power-Up Time t
ON
1% final value, V
SENSE
= 25mV 100 μs
ELECTRICAL CHARACTERISTICS (continued)
(V
RS+
= V
RS-
= 3.6V, V
SENSE
= (V
RS+
- V
RS-
) = 0, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
(Note 1)
Note 1: All devices are 100% production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
Note 2: V
OUT
= 0V. I
CC
is the total current into RS+ plus RS-.
Note 3: V
OS
is extrapolated from measurements for the Gain Error test.
Note 4: Gain Error is calculated by applying two values of V
SENSE
and calculating the error of the slope, vs. the ideal:
G = 25: V
SENSE
20mV and 120mV
G = 50: V
SENSE
10mV and 60mV
G = 100: V
SENSE
5mV and 30mV
Note 5: The device is stable for any external capacitance value.
Note 6: V
OH
is the voltage from V
RS-
to V
OUT
with V
SENSE
= 3.6V/Gain.
Typical Operating Characteristics
(V
RS+
= V
RS-
= 3.6V, T
A
= +25°C.)
20
15
10
5
0
-250
-200-150-100 -50 0
25020015010050
MAX9610F
OFFSET VOLTAGE HISTOGRAM
MAX9610 toc01
OFFSET VOLTAGE (
μ
V)
N (%)
30
25
20
15
10
5
0
-0.2
-0.15 -0.1 -0.05 0
0.20.150.10.05
MAX9610F
GAIN ACCURACY HISTOGRAM
MAX9610 toc02
GAIN ACCURACY (%)
N (%)
0
300
200
100
400
500
600
700
800
900
1000
-40 10-15 35 60 85
SUPPLY CURRENT
vs. TEMPERATURE
MAX9610 toc03
TEMPERATURE (
°
C)
SUPPLY CURRENT (nA)
5.5V
3.6V
1.6V
P1-P3P4-P6P7-P9P10-P11

MAX9610FEXK+T

Mfr. #:
Buy MAX9610FEXK+T
Manufacturer:
Maxim Integrated
Description:
Current Sense Amplifiers 1uA Li-Ion Battery Current-Sense Amp
Lifecycle:
New from this manufacturer.
Delivery:
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