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參數(shù)資料
| 型號： | MAX4210AEUA |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | High-Side Power and Current Monitors |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | MO-187CAA, MICRO MAX-8 |
| 文件頁數(shù)： | 13/35頁 |
| 文件大小： | 932K |
| 代理商： | MAX4210AEUA |
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MAX4210/MAX4211
The common-mode voltage range is +4V to +28V and
independent of the supply voltage. With this feature, the
device can monitor the output current of a high-voltage
source while running at a lower system voltage typically
between 2.7V and 5.5V.
The MAX4211 has a current-sense amplifier output. The
voltage at IOUT is proportional to the voltage across
VSENSE:
VIOUT = AVIOUT x VSENSE
where VSENSE is the voltage across RS+ and RS-, and
AVIOUT is the amplifier gain of the device given in Table 1.
Analog Multiplier
The MAX4210/MAX4211 integrate an analog multiplier
that enables real-time monitoring of power delivered to
a load. The voltage proportional to the load current is
fed to one input of the multiplier and a voltage propor-
tional to the source voltage is fed to the other. The ana-
log multiplier multiplies these two voltages to obtain an
output voltage proportional to the load power. The ana-
log multiplier is designed only to operate in the positive
quadrant, that is, the inputs and outputs are always
positive voltages.
For the MAX4210D/E/F and MAX4211D/E/F, the analog
multiplier full-scale input at IN is approximately 1V. This
independent multiplier input allows greater design flexi-
bility when using an external voltage-divider. For the
MAX4210A/B/C and MAX4211A/B/C, an integrated volt-
age-divider divides the source voltage at the RS+ pin
by a nominal value of 25 and passes this voltage to the
multiplier. Thus, the full-scale input voltage at RS+ is
25V. The integrated, trimmed resistor-dividers reduce
external component count and cost.
The voltage output at POUT is proportional to the output
power:
For the MAX4210A/B/C and MAX4211A/B/C:
VPOUT = AVPOUT x VSENSE x VRS+
For the MAX4210D/E/F and MAX4211D/E/F:
VPOUT = AVPOUT x VSENSE x VIN
where VSENSE is the voltage across RS+ and RS- and
AVPOUT is the amplifier gain of the device given in
Table 2.
Internal Comparators (MAX4211)
The MAX4211 features two uncommitted open-drain
output comparators. These comparators can be config-
ured to trip when load current or power reaches a set
limit. They can also be configured as a window com-
parator with wire-OR output. Comparator 1 (COUT1)
features latch-enable (LE) and inhibit (INHIBIT) inputs.
When LE is low, the comparator is transparent (it func-
tions as a regular unlatched comparator). When LE is
high, the comparator output (COUT1) is latched. When
high, the INHIBIT input suspends the comparator oper-
ation and latches the output to the current state. The
operation of INHIBIT is similar to LE, except it has a dif-
ferent input threshold and wider hysteresis. The INHIB-
IT logic-high threshold is 1.21V and logic-low threshold
is 0.6V with 0.6V hysteresis. INHIBIT is useful in pre-
venting the comparator from giving false output during
fast RS+ transients. INHIBIT is generally triggered by
an RC network connected to RS+ (see the Applications
Information). Both comparators have a built-in 300s
blanking period at power-up to prevent false outputs.
The comparator outputs are open drain and they can
be pulled up to VCC, RS+, or any voltage less than
+28V. LE and INHIBIT are internally pulled down by a
1A source.
High-Side Power and
Current Monitors
20
______________________________________________________________________________________
PART
CURRENT-SENSE
AMPLIFIER GAIN
(AVIOUT, V/V)
FULL-SCALE
SENSE VOLTAGE
(mV)
MAX4211A/D
16.67
150
MAX4211B/E
25.00
150
MAX4211C/F
40.96
100
Table 1. MAX4211 Current-Sense
Amplifier Gain and Full-Scale Sense
Voltage
PART
POWER-SENSE
AMPLIFIER GAIN
(AVPOUT, 1/V)
FULL-SCALE
SENSE VOLTAGE
(mV)
MAX4210A
0.667
150
MAX4210B
1.000
150
MAX4210C
1.640
100
MAX4210D
16.670
150
MAX4210E
25.000
150
MAX4210F
40.960
100
MAX4211A
0.667
150
MAX4211B
1.000
150
MAX4211C
1.640
100
MAX4211D
16.670
150
MAX4211E
25.000
150
MAX4211F
40.960
100
Table 2. MAX4210/MAX4211 Power-Sense
Amplifier Gain and Full-Scale Sense
Voltage
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4210AEUA+ | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 High-Side Power & Current Monitor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX4210AEUA+T | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 High-Side Power & Current Monitor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX4210AEUA-T | 功能描述:電流和電力監(jiān)控器、調(diào)節(jié)器 High-Side Power & Current Monitor RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Current Regulators 電源電壓-最大:48 V 電源電壓-最小:5.5 V 工作溫度范圍:- 40 C to + 150 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HPSO-8 封裝:Reel |
| MAX4210BETT | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX4210BETT+ | 制造商:Maxim Integrated Products 功能描述:HIGH-SIDE POWER AND CURRENT MONITOR - Rail/Tube |
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