參數(shù)資料
型號(hào): LTC6101HVBCS5
廠商: LINEAR TECHNOLOGY CORP
元件分類: 模擬信號(hào)調(diào)理
英文描述: High Voltage, High-Side Current Sense Amplifier in SOT-23
中文描述: SPECIALTY ANALOG CIRCUIT, PDSO5
封裝: PLASTIC, MO-193, TSOT-23, 5 PIN
文件頁數(shù): 8/20頁
文件大?。?/td> 330K
代理商: LTC6101HVBCS5
LTC6101/LTC6101HV
8
6101fa
OUT (Pin 1):
Current Output. OUT (Pin 1) will source a
current that is proportional to the sense voltage into an
external resistor.
V
(Pin 2):
Negative Supply (or Ground for Single-Supply
Operation).
IN
(Pin 3):
The internal sense amplifier will drive IN
(Pin
3) to the same potential as IN
+
(Pin 4). A resistor (R
IN
) tied
from V
+
to IN
sets the output current I
OUT
= V
SENSE
/R
IN
.
V
SENSE
is the voltage developed across the external R
SENSE
(Figure 1).
IN
+
(Pin 4):
Must be tied to the system load end of the
sense resistor, either directly or through a resistor.
V
+
(Pin 5):
Positive Supply Pin. Supply current is drawn
through this pin.
The circuit may be configured so that
the LTC6101 supply current is or is not monitored along
with the system load current.
To monitor only system
load current, connect V
+
to the more positive side of the
sense resistor. To monitor the total current, including the
LTC6101 current, connect V
+
to the more negative side of
the sense resistor.
Figure 1. LTC6101/LTC6101HV Block Diagram and Typical Connection
The LTC6101 high side current sense amplifier (Figure 1)
provides accurate monitoring of current through a user-
selected sense resistor. The sense voltage is amplified by
a user-selected gain and level shifted from the positive
power supply to a ground-referred output. The output
signal is analog and may be used as is or processed with
an output filter.
Theory of Operation
An internal sense amplifier loop forces IN
to have the
same potential as IN
+
. Connecting an external resistor,
R
IN
, between IN
and V
+
forces a potential across R
IN
that
is the same as the sense voltage across R
SENSE
. A corre-
sponding current, V
SENSE
/R
IN
, will flow through R
IN
. The
high impedance inputs of the sense amplifier will not
conduct this input current, so it will flow through an
internal MOSFET to the output pin.
The output current can be transformed into a voltage by
adding a resistor from OUT to V
. The output voltage is
then V
O
= V
+ I
OUT
R
OUT
.
+
4
3
5
2
1
IN
V
+
V
10V
OUT
6101 BD
IN
+
LTC6101/LTC6101HV
V
BATTERY
I
OUT
V
SENSE
R
SENSE
I
LOAD
R
OUT
R
IN
+
L
O
A
D
V
OUT
= V
SENSE
x R
OUT
R
IN
5k
5k
10V
PIU
BLOCK DIAGRA
APPLICATIU
W
U
U
相關(guān)PDF資料
PDF描述
LTC6101HVBHS5 High Voltage, High-Side Current Sense Amplifier in SOT-23
LTC6101HVBIS5 High Voltage, High-Side Current Sense Amplifier in SOT-23
LTC6101HVCCS5 High Voltage, High-Side Current Sense Amplifier in SOT-23
LTC6101HVCHS5 High Voltage, High-Side Current Sense Amplifier in SOT-23
LTC6101CIS5 High Voltage, High-Side Current Sense Amplifier in SOT-23
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