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MAX4073HAXK+T

P1-P3P4-P6P7-P9P10-P12
General Description
The MAX4073 low-cost, high-side current-sense ampli-
fier features a voltage output that eliminates the need
for gain-setting resistors making it ideal for cell phones,
notebook computers, PDAs, and other systems where
current monitoring is crucial. High-side current moni-
toring does not interfere with the ground path of the
battery charger making the MAX4073 particularly useful
in battery-powered systems. The input common-mode
range of +2V to +28V is independent of the supply volt-
age. The MAX4073’s wide 1.8MHz bandwidth makes it
suitable for use inside battery-charger control loops.
The combination of three gain versions and a selec-
table external-sense resistor sets the full-scale current
reading. The MAX4073 offers a high level of integra-
tion, resulting in a simple and compact current-sense
solution.
The MAX4073 operates from a +3V to +28V single sup-
ply and draws only 0.5mA of supply current. This
device is specified over the automotive operating tem-
perature range (-40
°C to +125°C) and is available in a
space-saving 5-pin SC70 package (half the size of the
SOT23).
For a similar device in a 6-pin SOT23 with a wider com-
mon-mode voltage range (0 to +28V), see the
MAX4173 data sheet.
Applications
Cell Phones
Notebook Computers
Portable/Battery-Powered Systems
Smart Battery Packs/Chargers
PDAs
Power Management Systems
PA Bias Control
General System/Board-Level Current Monitoring
Precision Current Sources
Features
♦ Low-Cost, Compact, Current-Sense Solution
♦ Three Gain Versions Available
+20V/V (MAX4073T)
+50V/V (MAX4073F)
+100V/V (MAX4073H)
♦ ±1.0% Full-Scale Accuracy
♦ 500µA Supply Current
♦ Wide 1.8MHz Bandwidth
♦ +3V to +28V Operating Supply
♦ Wide +2V to +28V Common-Mode Range
Independent of Supply Voltage
♦ Automotive Temperature Range (-40
°C to +125°C)
♦ Available in Space-Saving 5-Pin SC70 Package
MAX4073T/F/H
Low-Cost, SC70, Voltage-Output,
High-Side Current-Sense Amplifier
Typical Operating Circuit
19-2048; Rev 1; 8/12
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
Ordering Information
Pin Configurations appear at end of data sheet.
PART TEMP. RANGE PIN-PACKAGE GAIN (V/V) TOP MARK
MAX4073TAXK+T -40°C to +125°C 5 SC70 20 ACM
MAX4073TAUT+T -40°C to +125°C 6 SOT23 20 AAUE
MAX4073FAXK+T -40°C to +125°C 5 SC70 50 ACN
MAX4073FAUT+T -40°C to +125°C 6 SOT23 50 AAUF
MAX4073HAXK+T -40°C to +125°C 5 SC70 100 ACO
MAX4073HAUT+T -40°C to +125°C 6 SOT23 100 AAUG
+Denotes lead(Pb)-free/RoHS-compliant package.
MAX4073T/F/H
R
SENSE
I
LOAD
+2V TO +28V
V
SENSE
V
CC
OUT
V
IN
GND
RS+
+3V TO +28V
0.1µF
RS-
LOAD/
BATTERY
LOW-COST
SWITCHING
REGULATOR
MAX4073T/F/H
Low-Cost, SC70, Voltage-Output,
High-Side Current-Sense Amplifier
2
Maxim Integrated
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
RS+
= +2V to +28V, V
SENSE
= (V
RS+
- V
RS-
) = 0, V
CC
= +3V to +28V, T
A
= T
MIN
to T
MAX
, 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.
V
CC
to GND............................................................-0.3V to +30V
RS+, RS- to GND....................................................-0.3V to +30V
OUT to GND ...............................................-0.3V to (V
CC
+ 0.3V)
Output Short-Circuit to GND ......................................Continuous
Differential Input Voltage (V
RS+
- V
RS-
) .................................±5V
Current Into Any Pin..........................................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SC70 (derate 2.27mW/°C above +70°C)............200mW
6-Pin SOT23 (derate 8.7mW/°C above +70°C)............696mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature ....................................................+260°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Operating Voltage Range V
CC
(Note 2) 3 28 V
Common-Mode Input Range
V
CMR
(Note 3) 2 28 V
Common-Mode Rejection CMR V
SENSE
= 100mV, V
CC
= 12V 90 dB
Supply Current I
CC
V
CC
= 28V 0.5 1.2 mA
Leakage Current I
RS+
/I
RS-
V
CC
= 0V, V
RS+
= 28V 0.05 1 µA
I
RS+
20 60
Input Bias Current
I
RS-
40 120
µA
Full-Scale Sense Voltage V
SENSE
V
SENSE
= (V
RS+
- V
RS-
) 150 mV
V
SENSE
= 100mV, V
CC
= 12V, V
RS+
= 2V ±1.0
V
SENSE
= 100mV, V
CC
= 12V,
V
RS+
= 12V, T
A
= +25
o
C
±1.0 ±5.0
V
SENSE
= 100mV, V
CC
= 12V,
V
RS+
= 12V, T
A
= T
MIN
to T
MAX
±7.0
V
SENSE
= 100mV, V
CC
= 28V,
V
RS+
= 28V, T
A
= +25
o
C
±1.0 ±5.0
V
SENSE
= 100mV, V
CC
= 28V,
V
RS+
= 28V, T
A
= T
MIN
to T
MAX
±8.5
Total OUT Voltage Error (Note 4)
V
SENSE
= 6.25mV (Note 5); V
CC
= 12V,
V
RS+
= 12V
±7.5
%
Extrapolated Input Offset Voltage V
OS
V
CC
= V
RS+
= 12V, V
SENSE
> 10mV 1.0 mV
MAX4073T, V
CC
= 3V
MAX4073F, V
CC
= 7.5VOUT High Voltage (V
CC
- V
OH
)
V
SENSE
=
150mV
MAX4073H, V
CC
= 15V
0.8 1.2 V
MAX4073T/F/H
Low-Cost, SC70, Voltage-Output,
High-Side Current-Sense Amplifier
3
Maxim Integrated
ELECTRICAL CHARACTERISTICS (continued)
(V
RS+
= +2V to +28V, V
SENSE
= (V
RS+
- V
RS-
) = 0, V
CC
= +3V to +28V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are
at T
A
= +25°C.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX4073T,
V
SENSE
= 100mV
1.8
MAX4073F,
V
SENSE
= 100mV
1.7
MAX4073H,
V
SENSE = 100mV
1.6
MHz
Bandwidth BW
V
CC
= 12V,
V
RS+
= 12V,
C
LOAD
= 5pF
MAX4073T/F/H
V
SENSE = 6.25mV
(
Note 5
)
600 kHz
MAX4073T 20
MAX4073F 50Gain
A
V
MAX4073H 100
V/V
T
A = +25°C ±1.0 ±4.5
V
CC = 12V,
V
RS+
= 12V,
V
SENSE = 10mV
to 150mV,
MAX4073T/F
T
A =
T
MIN to
T
MAX ±6.5
T
A = +25°C ±1.0 ±4.5
Gain Accuracy
∆A
V
V
CC = 12V,
V
RS+
= 12V,
V
SENSE = 10mV
to 100mV,
MAX4073H
T
A =
T
MIN to
T
MAX ±6.5
%
V
SENSE
= 6.25mV to
100mV
400
OUT Settling Time to 1% of Final
Value
V
CC = 12V
V
RS+
= 12V
C
LOAD
= 5pF
V
SENSE
= 100mV to
6.25mV
800
ns
Output Resistance R
OUT
12 kΩ
V
SENSE
= 60mV, MAX4073T 70 78
V
SENSE
= 24mV, MAX4073F 70 85Power-Supply Rejection Ratio PSRR V
C C = 3V to 28V
V
SENSE
= 12mV, MAX4073H 70 90
dB
Power-Up Time (Note 6) C
LOAD
= 5pF, V
SENSE
= 100mV 5 µs
Saturation Recovery Time
(Note 7)
V
CC
= 12V, V
RS+
= 12V,
C
LOAD
= 5pF
5µs
Note 1: All devices are 100% production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
Note 2: Inferred from PSRR test.
Note 3: Inferred from OUT Voltage Error test.
Note 4: Total OUT Voltage Error is the sum of the gain and offset errors.
Note 5: 6.25mV = 1/16 of 100mV full-scale sense voltage.
Note 6: Output settles to within 1% of final value.
Note 7: The device will not experience phase reversal when overdriven.
P1-P3P4-P6P7-P9P10-P12

MAX4073HAXK+T

Mfr. #:
Buy MAX4073HAXK+T
Manufacturer:
Maxim Integrated
Description:
Current Sense Amplifiers Voltage-Output High Side Crnt-Sense Amp
Lifecycle:
New from this manufacturer.
Delivery:
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