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MAX4372HEUK-TG05

Current Sense Amplifiers uPower High-Side Current-Sense Amp

器件类别:电源/电源管理    电源电路   

厂商名称:Maxim(美信半导体)

厂商官网:https://www.maximintegrated.com/en.html

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器件参数
参数名称
属性值
是否无铅
含铅
是否Rohs认证
不符合
包装说明
LSSOP,
Reach Compliance Code
compliant
ECCN代码
EAR99
可调阈值
NO
模拟集成电路 - 其他类型
POWER SUPPLY SUPPORT CIRCUIT
JESD-30 代码
R-PDSO-G5
长度
2.9 mm
信道数量
1
功能数量
1
端子数量
5
最高工作温度
85 °C
最低工作温度
-40 °C
封装主体材料
PLASTIC/EPOXY
封装代码
LSSOP
封装形状
RECTANGULAR
封装形式
SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度(摄氏度)
NOT SPECIFIED
座面最大高度
1.45 mm
最大供电电压 (Vsup)
28 V
最小供电电压 (Vsup)
2.7 V
标称供电电压 (Vsup)
12 V
表面贴装
YES
技术
BICMOS
温度等级
INDUSTRIAL
端子形式
GULL WING
端子节距
0.95 mm
端子位置
DUAL
处于峰值回流温度下的最长时间
NOT SPECIFIED
宽度
1.625 mm
Base Number Matches
1
文档预览
MAX4372T/F/H
Low-Cost, UCSP/SOT23, Micropower, High-Side
Current-Sense Amplifier with Voltage Output
Features
General Description
The MAX4372 low-cost, precision, high-side current-
sense amplifier is available in a tiny, space-saving
SOT23 5-pin package. Offered in three gain versions
(T = 20V/V, F = 50V/V, and H = 100V/V), this device oper-
ates from a single 2.7V to 28V supply and consumes only
30μA. It features a voltage output that eliminates the need
for gain-setting resistors and is ideal for today’s notebook
computers, cell phones, and other systems where battery/
DC current monitoring is critical.
High-side current monitoring is especially useful in bat-
tery-powered systems since it does not interfere with the
ground path of the battery charger. The input common-
mode range of 0 to 28V is independent of the supply volt-
age and ensures that the current-sense feedback remains
viable even when connected to a 2-cell battery pack in
deep discharge.
The user can set the full-scale current reading by choos-
ing the device (T, F, or H) with the desired voltage gain
and selecting the appropriate external sense resistor.
This capability offers a high level of integration and flex-
ibility, resulting in a simple and compact current-sense
solution. For higher bandwidth applications, refer to the
MAX4173T/F/H data sheet.
Low-Cost, Compact Current-Sense Solution
● 30μA Supply Current
2.7V to 28V Operating Supply
0.18% Full-Scale Accuracy
● 0.3mV Input Offset Voltage
● Low 1.5Ω Output Impedance
Three Gain Versions Available
• 20V/V (MAX4372T)
• 50V/V (MAX4372F)
• 100V/V (MAX4372H)
High Accuracy +2V to +28V Common-Mode Range,
Functional Down to 0V, Independent of Supply
Voltage
Available in a Space-Saving 5-Pin SOT23 Package
and 3 x 2 UCSP™ (1mm x 1.5mm) Package
Ordering Information
PART
MAX4372TEUK+T
MAX4372TESA+
MAX4372TEBT+T
TEMP
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
5 SOT23
8 SO
3 x 2 UCSP
TOP
MARK
ADIU
ACX
Applications
Power-Management Systems
General-System/Board-Level Current Monitoring
Notebook Computers
Portable/Battery-Powered Systems
Smart-Battery Packs/Chargers
Cell Phones
Precision-Current Sources
+Denotes lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*Note: Gain values are as follows: 20V/V for the T version,
50V/V for the F version, and 100V/V for the H version.
Ordering Information appears at end of data sheet.
Typical Operating Circuit
I
LOAD
GND
RS-
Pin Configurations
TOP VIEW
TOP VIEW
(BUMPS ON BOTTOM)
1
GND
1
5
RS-
A
V
CC
GND
OUT
V
CC
+2.7V TO +28V
0.1µF
2
3
A/D
CONVERTER
MAX4372T
MAX4372F
OUT
MAX4372H
R
SENSE
V
SENSE
LOAD/
BATTERY
OUT
2
MAX4372T
MAX4372F
MAX4372H
4
RS+
B
V
CC
3
MAX4372T
MAX4372F
RS+
MAX4372H
RS-
V
CC
RS+
V
IN
0 TO 28V
UCSP
SOT23
Pin Configurations continued at end of datasheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
19-1548; Rev 5; 5/11
MAX4372T/F/H
Low-Cost, UCSP/SOT23, Micropower, High-Side
Current-Sense Amplifier with Voltage Output
Absolute Maximum Ratings
V
CC
, RS+, RS- to GND .........................................-0.3V to +30V
OUT to GND ..........................................................-0.3V to +15V
Differential Input Voltage (V
RS+
- V
RS-
) .............................±0.3V
Current into Any Pin .........................................................±10mA
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SOT23 (derate 3.9mW/°C above +70°C) .......312.6mW
8-Pin SO (derate 7.4mW/°C above +70°C)..............588.2mW
3 x 2 UCSP (derate 3.4mW/°C above +70°C) .........273.2mW
Operating Temperature Range ........................... -40°C to +85°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s) ................................. +300°C
Soldering Temperature (reflow) .......................................+260°C
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.
Electrical Characteristics
(V
RS+
= 0 to 28V, V
CC
= 2.7V to 28V, V
SENSE
= 0V, R
LOAD
= 1MΩ, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are
at T
A
= +25°C.) (Note 1)
PARAMETER
Operating Voltage Range
(Note 2)
Common-Mode Input Range
(Note 3)
Common-Mode Rejection
Supply Current
Leakage Current
SYMBOL
V
CC
V
CMR
CMR
I
CC
I
RS+
, I
RS-
I
RS+
Input Bias Current
I
RS-
Full-Scale Sense Voltage
(Note 4)
V
SENSE
V
RS+
> 2V
V
RS+
> 2V, V
SENSE
= 5mV
V
CC
= 0V, V
RS+
= 28V
V
RS+
> 2V
V
RS+
≤ 2V
V
RS+
> 2V
V
RS+
≤ 2V
Gain = 20V/V or 50V/V
Gain = 100V/V
T
A
= +25°C
V
CC
= V
RS+
= 12V
T
A
= T
MIN
to T
MAX
V
CC
= V
RS+
= 12V
MAX4372_ESA
MAX4372_EUK, _EBT
MAX4372_ESA
MAX4372_EUK, _EBT
±0.18
0
-25
0
-50
150
100
0.3
0.3
±0.8
±1.3
±1.1
±1.9
±3
±6
±0.15
±1
±0.15
±7
±28
%
mV
CONDITIONS
MIN
2.7
0
85
30
0.05
60
1.2
1
+2
2
+2
mV
μA
TYP
MAX
28
28
UNITS
V
V
dB
μA
μA
Input Offset Voltage
(Note 5)
Full-Scale Accuracy
(Note 5)
V
OS
V
SENSE
= 100mV, V
CC
= 12V,
V
RS+
= 12V, T
A
= +25°C (Note 7)
V
SENSE
= 100mV, V
CC
= 12V,
V
RS+
= 12V (Note 7)
Total OUT Voltage Error
(Note 6)
V
SENSE
= 100mV, V
CC
= 28V,
V
RS+
= 28V (Note 7)
V
SENSE
= 100mV, V
CC
= 12V,
V
RS+
= 0.1V (Note 7)
V
SENSE
= 6.25mV, V
CC
= 12V,
V
RS+
= 12V (Note 8)
www.maximintegrated.com
Maxim Integrated │
2
MAX4372T/F/H
Low-Cost, UCSP/SOT23, Micropower, High-Side
Current-Sense Amplifier with Voltage Output
Electrical Characteristics (continued)
(V
RS+
= 0 to 28V, V
CC
= 2.7V to 28V, V
SENSE
= 0V, R
LOAD
= 1MΩ, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are
at T
A
= +25°C.) (Note 1)
PARAMETER
OUT Low Voltage
(MAX4372T, MAX4372F)
OUT Low Voltage
(MAX4372H)
OUT High Voltage
SYMBOL
V
OL
CONDITIONS
V
CC
= 2.7V,
V
SENSE
= -10mV,
V
RS+
= 28V
V
CC
= 2.7V,
V
SENSE
= -10mV,
V
RS+
= 12V
I
OUT
= 10μA
I
OUT
= 100μA
I
OUT
= 10μA
I
OUT
= 100μA
MIN
TYP
2.6
9
2.6
9
0.1
275
200
110
50
20
50
100
T
A
= +25°C
T
A
= -40°C to +85°C
V
SENSE
= 6.25mV to
100mV
V
SENSE
= 100mV to
6.25mV
20
µs
20
1000
1.5
75
85
0.5
0.1
pF
Ω
dB
ms
ms
±0.25
±2.5
±5.5
%
V/V
65
0.25
65
MAX
UNITS
mV
V
OL
mV
V
CC
- V
OH
V
CC
= 2.7V, I
OUT
= -500μA,
V
SENSE
= 250mV, V
RS+
= 28V
V
SENSE
= 20mV,
gain = 20V/V
V
-3dB Bandwidth
BW
V
RS+
= 12V,
V
CC
= 12V,
C
LOAD
= 10pF
V
SENSE
= 20mV,
gain = 50V/V
V
SENSE
= 20mV,
gain = 100V/V
V
SENSE
= 6.25mV
kHz
MAX4372T
Gain
MAX4372F
MAX4372H
Gain Accuracy
V
SENSE
= 20mV
to 100mV, V
RS+
= 12V
Gain = 20V/V,
V
CC
= 12V,
V
RS+
= 12V,
C
LOAD
= 10pF
R
OUT
PSR
V
SENSE
= 100mV
V
OUT
= 2V, V
RS+
> 2V
V
CC
= 12V, V
RS+
= 12V,
V
SENSE
= 100mV, C
LOAD
= 10pF
V
CC
= 12V, V
RS+
= 12V, C
LOAD
= 10pF
OUT Settling Time to 1% of
Final Value
Capacitive-Load Stability
OUT Output Resistance
Power-Supply Rejection
Power-Up Time to 1% of
Final Value
Saturation Recovery Time
(Note 9)
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
No sustained oscillations
All devices are 100% production tested at T
A
= +25°C. All temperature limits are guaranteed by design.
Guaranteed by PSR test.
Guaranteed by OUT voltage error test.
Output voltage is internally clamped not to exceed 12V.
V
OS
is extrapolated from the gain accuracy tests.
Total OUT voltage error is the sum of gain and offset voltage errors.
Measured at I
OUT
= -500μA (R
LOAD
= 4kΩ for gain = 20V/V, R
LOAD
= 10kΩ for gain = 50V/V, R
LOAD
= 20kΩ for gain = 100V/V).
6.25mV = 1/16 of 100mV full-scale voltage (C/16).
The device does not reverse phase when overdriven.
www.maximintegrated.com
Maxim Integrated │
3
MAX4372T/F/H
Low-Cost, UCSP/SOT23, Micropower, High-Side
Current-Sense Amplifier with Voltage Output
Typical Operating Characteristics
(V
CC
= 12V, V
RS+
= 12V, V
SENSE
= 100mV, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX4372 toc01
SUPPLY CURRENT vs. TEMPERATURE
MAX4372T toc02
35
SUPPLY CURRENT (µA)
30
25
20
15
10
5
V
SENSE
= 5mV
-40
-15
10
35
60
31.5
SUPPLY CURRENT (µA)
31.0
30.5
30.0
29.5
29.0
28.5
A
V
= +100V/V
SUPPLY CURRENT (µA)
32.5
A
V
= +100V/V
A
V
= +50V/V
A
V
= +20V/V
30.0
A
V
= +50V/V
A
V
= +20V/V
27.5
V
SENSE
= 5mV
0
4
8
12
16
20
24
28
SUPPLY VOLTAGE (V)
25.0
0
85
28.0
V
SENSE
= 5mV
0
4
8
12
16
20
24
28
COMMON-MODE VOLTAGE (V)
TEMPERATURE (°C)
MAX4372T toc05
0.4
OUTPUT ERROR (%)
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
-1.2
0
5
10
15
20
G = +50V/V
G = +20V/V
G = +100V/V
-45
-50
-55
PSR (dB)
-60
-65
-70
-75
-80
-85
-90
1.0
OUTPUT ERROR (%)
0.5
0
-0.5
-1.0
A
V
= +100V/V
A
V
= +50V/V
A
V
= +20V/V
25
30
0
50
100
150
200
250
300
100
1k
10k
100k
SUPPLY VOLTAGE (V)
V
SENSE
(mV)
FREQUENCY (Hz)
MAX4372T toc08
MAX4372T toc07
GAIN ACCURACY (%)
OUTPUT ERROR (%)
1.2
1.0
0.8
0.6
0.4
0.2
0
0
5
G = +50V/V
G = +100V/V
G = +20V/V
10
15
20
25
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-1.0
A
V
= +50V/V
A
V
= +100V/V
TOTAL OUTPUT ERROR (%)
1.4
-0.1
-0.2
A
V
= +20V/V
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
A
V
= +20V/V
A
V
= +100V/V
A
V
= +50V/V
30
-40
-15
COMMON-MODE VOLTAGE (V)
10
35
TEMPERATURE (°C)
60
85
-40
-15
10
35
60
85
TEMPERATURE (°C)
www.maximintegrated.com
Maxim Integrated │
4
MAX4372T toc09
1.6
TOTAL OUTPUT ERROR
vs. COMMON-MODE VOLTAGE
GAIN ACCURACY vs. TEMPERATURE
0
TOTAL OUTPUT ERROR vs. TEMPERATURE
1.0
MAX4372T toc06
MAX4372 toc04
0.6
TOTAL OUTPUT ERROR
vs. SUPPLY VOLTAGE
1.5
TOTAL OUTPUT ERROR vs. V
SENSE
-40
POWER-SUPPLY REJECTION
vs. FREQUENCY
MAX4372 toc03
35.0
40
32.0
SUPPLY CURRENT
vs. COMMON-MODE VOLTAGE
MAX4372T/F/H
Low-Cost, UCSP/SOT23, Micropower, High-Side
Current-Sense Amplifier with Voltage Output
Typical Operating Characteristics (continued)
(V
CC
= 12V, V
RS+
= 12V, V
SENSE
= 100mV, T
A
= +25°C, unless otherwise noted.)
MAX4372T
SMALL-SIGNAL TRANSIENT RESPONSE
MAX4372T toc10
MAX4372F
SMALL-SIGNAL TRANSIENT RESPONSE
MAX4372T toc11
MAX4372H
SMALL-SIGNAL TRANSIENT RESPONSE
MAX4372T toc12
30mV
V
SENSE
10mV
600mV
V
OUT
200mV
V
SENSE
30mV V
SENSE
10mV
1.5V
30mV
10mV
3V
V
OUT
0.5V
V
OUT
1V
20µs/div
20µs/div
20µs/div
MAX4372T
LARGE-SIGNAL TRANSIENT RESPONSE
MAX4372T toc13
MAX4372F
LARGE-SIGNAL TRANSIENT RESPONSE
MAX4372T toc14
V
SENSE
150mV
50mV
3V
V
SENSE
150mV
50mV
7.5V
V
OUT
1V
20µs/div
V
OUT
2.5V
20µs/div
MAX4372H
LARGE-SIGNAL TRANSIENT RESPONSE
MAX4372T toc15
2
V
SENSE
100mV
0
10V
V
OUT
0
20µs/div
1
0
GAIN (dB)
-1
-2
-3
-4
-5
-6
-7
-8
1k
V
SENSE
= 20mV
10k
100k
G = 100V/V
G = 50V/V
G = 20V/V
1M
FREQUENCY (Hz)
www.maximintegrated.com
Maxim Integrated │
5
MAX4372T toc16
3
SMALL-SIGNAL GAIN vs. FREQUENCY
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