LTC6101/LTC6101HV
High Voltage,
High-Side Current Sense
Amplifier in SOT-23
FEATURES
■
DESCRIPTIO
■
■
■
■
■
■
■
■
Supply Range:
5V to 100V, 105V Absolute Maximum (LTC6101HV)
4V to 60V, 70V Absolute Maximum (LTC6101)
Low Offset Voltage: 300µV Max
µ
Fast Response: 1µs Response Time (0V to 2.5V on
µ
a 5V Output Step)
Gain Configurable with 2 Resistors
Low Input Bias Current: 170nA Max
PSRR: 110dB Min
4V to 60V (LTC6101)
5V to 100V (LTC6101HV)
Output Current: 1mA Max
Low Supply Current: 250µA, V
S
= 14V
Low Profile (1mm) SOT-23 (ThinSOT
TM
) Package
The LTC
®
6101/LTC6101HV are versatile, high voltage, high
side current sense amplifiers. Design flexibility is provided
by the excellent device characteristics; 300µV Max offset
and only 375µA (typical at 60V) of current consumption.
The LTC6101 operates on supplies from 4V to 60V and
LTC6101HV operates on supplies from 5V to 100V.
The LTC6101 monitors current via the voltage across an
external sense resistor (shunt resistor). Internal circuitry
converts input voltage to output current, allowing for a small
sense signal on a high common mode voltage to be trans-
lated into a ground referenced signal. Low DC offset allows
the use of a small shunt resistor and large gain-setting
resistors. As a result, power loss in the shunt is reduced.
The wide operating supply range and high accuracy make
the LTC6101 ideal for a large array of applications from
automotive to industrial and power management. A maxi-
mum input sense voltage of 500mV allows a wide range of
currents to be monitored. The fast response makes the
LTC6101 the perfect choice for load current warnings and
shutoff protection control. With very low supply current,
the LTC6101 is suitable for power sensitive applications.
The LTC6101 is available in 5-lead SOT-23 and 8-lead
MSOP packages.
APPLICATIO S
■
■
■
■
Current Shunt Measurement
Battery Monitoring
Remote Sensing
Power Management
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
I
LOAD
16-Bit Resolution Unidirectional Output into LTC2433 ADC
–
V
SENSE
+
R
IN
100Ω
5V TO 105V
V
SENSE
–
∆V
SENSE
–
= 100mV
5.5V
5V
4
L
O
A
D
2
3
+ –
5
5V
1µF
1
LTC6101HV
R
OUT
4.99k
V
OUT
LTC2433-1
TO
µP
0.5V
0V
6101 TA01
R
OUT
V
OUT
=
• V
SENSE
= 49.9V
SENSE
R
IN
U
Step Response
V
OUT
T
A
= 25°C
V
+
= 12V
R
IN
= 100
R
OUT
= 5k
V
SENSE
+
= V
+
I
OUT
= 100µA
I
OUT
= 0
500ns/DIV
6101 TA01b
U
U
6101fa
1
LTC6101/LTC6101HV
ABSOLUTE
(Note 1)
AXI U RATI GS
LTC6101I/LTC6101HVI ...................... – 40°C to 85°C
LTC6101H/LTC6101HVH ................. – 40°C to 125°C
Specified Temperature Range (Note 2)
LTC6101C/LTC6101HVC ......................... 0°C to 70°C
LTC6101I/LTC6101HVI ...................... – 40°C to 85°C
LTC6101H/LTC6101HVH ................. – 40°C to 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
Total Supply Voltage (V
+
to V
–
)
LTC6101 ............................................................. 70V
LTC6101HV ...................................................... 105V
Minimum Input Voltage (–IN Pin) ................... (V
+
– 4V)
Maximum Output Voltage (Out Pin) ........................... 9V
Input Current .....................................................
±10mA
Output Short-Circuit Duration (to V
–
) ............. Indefinite
Operating Temperature Range
LTC6101C/LTC6101HVC .................... – 40°C to 85°C
PACKAGE/ORDER I FOR ATIO
TOP VIEW
–IN
NC
NC
OUT
1
2
3
4
8
7
6
5
+IN
V
+
NC
V
–
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C,
θ
JA
= 300°C/ W
ORDER PART NUMBER
LTC6101ACMS8
LTC6101AIMS8
LTC6101AHMS8
LTC6101HVACMS8
LTC6101HVAIMS8
LTC6101HVAHMS8
MS8 PART MARKING*
LTBSB
LTBSB
LTBSB
LTBSX
LTBSX
LTBSX
Order Options
Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marketing:
http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
*The temperature grades and parametric grades are identified by a label on the shipping container.
2
U
U
W
W W
U
W
TOP VIEW
OUT 1
V
–
2
–IN 3
4 +IN
5 V
+
S5 PACKAGE
5-LEAD PLASTIC TSOT-23
T
JMAX
= 150°C,
θ
JA
= 250°C/ W
ORDER PART NUMBER
LTC6101BCS5
LTC6101CCS5
LTC6101BIS5
LTC6101CIS5
LTC6101BHS5
LTC6101CHS5
LTC6101HVBCS5
LTC6101HVCCS5
LTC6101HVBIS5
LTC6101HVCIS5
LTC6101HVBHS5
LTC6101HVCHS5
S5 PART MARKING*
LTBND
LTBND
LTBND
LTBND
LTBND
LTBND
LTBSZ
LTBSZ
LTBSZ
LTBSZ
LTBSZ
LTBSZ
6101fa
LTC6101/LTC6101HV
ELECTRICAL CHARACTERISTICS
SYMBOL
V
S
V
OS
PARAMETER
Supply Voltage Range
Input Offset Voltage
CONDITIONS
(LTC6101) The
●
denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C, R
IN
= 100Ω, R
OUT
= 10k, V
SENSE+
= V
+
(see Figure 1 for
details), 4V
≤
V
S
≤
60V unless otherwise noted.
MIN
●
TYP
±85
MAX
60
±300
±450
±535
±450
±810
±1500
±2500
UNITS
V
µV
µV
µV
µV
µV
µV
µV
µV/°C
µV/°C
µV/°C
4
V
SENSE
= 5mV, Gain = 100, LTC6101A
V
SENSE
= 5mV, Gain = 100, LTC6101AC, LTC6101AI
V
SENSE
= 5mV, Gain = 100, LTC6101AH
V
SENSE
= 5mV, Gain = 100, LTC6101B
●
●
±150
●
V
SENSE
= 5mV, Gain = 100, LTC6101C
●
±400
●
●
●
●
∆V
OS
/∆T
Input Offset Voltage Drift
V
SENSE
= 5mV, LTC6101A
V
SENSE
= 5mV, LTC6101B
V
SENSE
= 5mV, LTC6101C
R
IN
= 1M
R
IN
= 1M
V
OS
within Specification, R
IN
= 1k
V
S
= 6V to 60V, V
SENSE
= 5mV, Gain = 100
±1
±3
±10
100
170
245
±15
I
B
I
OS
PSRR
Input Bias Current
Input Offset Current
Power Supply Rejection Ratio
nA
nA
nA
mV
dB
dB
dB
dB
V
V
V
●
●
●
±2
500
118
115
110
105
8
3
1
0
140
133
V
SENSE(MAX)
Input Sense Voltage Full Scale
V
S
= 4V to 60V, V
SENSE
= 5mV, Gain = 100
●
V
OUT
Maximum Output Voltage
12V
≤
V
S
≤
60V, V
SENSE
= 88mV
V
S
= 6V, V
SENSE
= 330mV, R
IN
= 1k, R
OUT
= 10k
V
S
= 4V, V
SENSE
= 550mV, R
IN
= 1k, R
OUT
= 2k
V
SENSE
= 0V, Gain = 100, LTC6101A
V
SENSE
= 0V, Gain = 100, LTC6101AC, LTC6101AI
V
SENSE
= 0V, Gain = 100, LTC6101AH
V
SENSE
= 0V, Gain = 100, LTC6101B
●
●
●
●
●
V
OUT (0)
Minimum Output Voltage
30
45
53.5
45
81
150
250
mV
mV
mV
mV
mV
mV
mV
mA
mA
0
●
V
SENSE
= 0V, Gain = 100, LTC6101C
●
0
●
●
I
OUT
t
r
BW
I
S
Maximum Output Current
Input Step Response
(to 2.5V on a 5V Output Step)
Signal Bandwidth
Supply Current
6V
≤
V
S
≤
60V, R
OUT
= 2k, V
SENSE
= 110mV, Gain = 20
V
S
= 4V, V
SENSE
= 550mV, Gain = 2, R
OUT
= 2k
∆V
SENSE
= 100mV Transient, 6V
≤
V
S
≤
60V, Gain = 50
V
S
= 4V
I
OUT
= 200µA, R
IN
= 100, R
OUT
= 5k
I
OUT
= 1mA, R
IN
= 100, R
OUT
= 5k
V
S
= 4V, I
OUT
= 0, R
IN
= 1M
1
0.5
1
1.5
140
200
220
µs
µs
kHz
kHz
450
475
475
525
500
590
640
690
720
µA
µA
µA
µA
µA
µA
µA
µA
µA
●
V
S
= 6V, I
OUT
= 0, R
IN
= 1M
●
240
250
●
V
S
= 12V, I
OUT
= 0, R
IN
= 1M
V
S
= 60V, I
OUT
= 0, R
IN
= 1M
LTC6101I, LTC6101C
LTC6101H
375
●
●
6101fa
3
LTC6101/LTC6101HV
(LTC6101HV) The
●
denotes the specifications which apply over the full
operating temperature range, otherwise specifications are at T
A
= 25°C, R
IN
= 100Ω, R
OUT
= 10k, V
SENSE+
= V
+
(see Figure 1 for
details), 5V
≤
V
S
≤
100V unless otherwise noted.
SYMBOL
V
S
V
OS
PARAMETER
Supply Voltage Range
Input Offset Voltage
CONDITIONS
●
ELECTRICAL CHARACTERISTICS
MIN
5
TYP
±85
MAX
100
±300
±450
±535
±450
±810
±1500
±2500
UNITS
V
µV
µV
µV
µV
µV
µV
µV
µV/°C
µV/°C
µV/°C
V
SENSE
= 5mV, Gain = 100, LTC6101HVA
V
SENSE
= 5mV, Gain = 100, LTC6101HVAC, LTC6101HVAI
●
●
V
SENSE
= 5mV, Gain = 100, LTC6101HVAH
V
SENSE
= 5mV, Gain = 100, LTC6101HVB
●
±150
±400
●
●
●
●
●
V
SENSE
= 5mV, Gain = 100, LTC6101HVC
∆V
OS
/∆T
Input Offset Voltage Drift
V
SENSE
= 5mV, LTC6101HVA
V
SENSE
= 5mV, LTC6101HVB
V
SENSE
= 5mV, LTC6101HVC
R
IN
= 1M
R
IN
= 1M
V
OS
within Specification, R
IN
= 1k
V
S
= 6V to 100V, V
SENSE
= 5mV, Gain = 100
●
●
●
±1
±3
±10
100
±2
500
118
115
110
105
8
3
0
30
45
53.5
45
81
150
250
140
133
170
245
±15
I
B
I
OS
PSRR
Input Bias Current
Input Offset Current
Power Supply Rejection Ratio
nA
nA
nA
mV
dB
dB
dB
dB
V
V
mV
mV
mV
mV
mV
mV
mV
mA
µs
µs
kHz
kHz
V
SENSE(MAX)
Input Sense Voltage Full Scale
V
S
= 5V to 100V, V
SENSE
= 5mV, Gain = 100
●
V
OUT
V
OUT (0)
Maximum Output Voltage
Minimum Output Voltage
12V
≤
V
S
≤
100V, V
SENSE
= 88mV
5V, V
SENSE
= 330mV, R
IN
= 1k, R
OUT
= 10k
V
SENSE
= 0V, Gain = 100, LTC6101HVA
V
SENSE
= 0V, Gain = 100, LTC6101HVAC, LTC6101HVAI
V
SENSE
= 0V, Gain = 100, LTC6101HVAH
V
SENSE
= 0V, Gain = 100, LTC6101HVB
●
●
●
●
0
●
V
SENSE
= 0V, Gain = 100, LTC6101HVC
●
0
●
I
OUT
t
r
BW
I
S
Maximum Output Current
Input Step Response
(to 2.5V on a 5V Output Step)
Signal Bandwidth
Supply Current
5V
≤
V
S
≤
100V, R
OUT
= 2k, V
SENSE
= 110mV, Gain = 20
∆V
SENSE
= 100mV Transient, 6V
≤
V
S
≤
100V, Gain = 50
V
S
= 5V
I
OUT
= 200µA, R
IN
= 100, R
OUT
= 5k
I
OUT
= 1mA, R
IN
= 100, R
OUT
= 5k
V
S
= 5V, I
OUT
= 0, R
IN
= 1M
1
1
1.5
140
200
200
●
450
475
475
525
500
590
640
690
720
640
690
720
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
µA
V
S
= 6V, I
OUT
= 0, R
IN
= 1M
●
220
230
●
V
S
= 12V, I
OUT
= 0, R
IN
= 1M
V
S
= 60V, I
OUT
= 0, R
IN
= 1M
LTC6101HVI, LTC6101HVC
LTC6101HVH
V
S
= 100V, I
OUT
= 0, R
IN
= 1M
LTC6101HVI, LTC6101HVC
LTC6101HVH
350
●
●
350
●
●
6101fa
4
LTC6101/LTC6101HV
ELECTRICAL CHARACTERISTICS
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The LTC6101C/LTC6101HVC are guaranteed to meet specified
performance from 0°C to 70°C. The LTC6101C/LTC6101HVC are designed,
characterized and expected to meet specified performance from – 40°C to
85°C but are not tested or QA sampled at these temperatures. LTC6101I/
LTC6101HVI are guaranteed to meet specified performance from – 40°C to
85°C. The LTC6101H/LTC6101HVH are guaranteed to meet specified
performance from – 40°C to 125°C.
TYPICAL PERFOR A CE CHARACTERISTICS
Input V
OS
vs Temperature
800
600
400
INPUT OFFSET (µV)
REPRESENTATIVE
UNITS
MAXIMUM V
SENSE
(V)
INPUT OFFSET (µV)
200
0
– 200
– 400
– 600
– 800
A GRADE
B GRADE
C GRADE
–40 –20
0
R
IN
= 100
R
OUT
= 5k
V
IN
= 5mV
–1000
20 40 60 80 100 120
TEMPERATURE (°C)
6101 G01
LTC6101: V
OUT
Maximum vs
Temperature
12
V
S
= 60V
10
MAXIMUM OUTPUT (V)
MAXIMUM OUTPUT (V)
V
S
= 12V
8
6
V
S
= 6V
4
V
S
= 4V
2
0
–40 –20
MAXIMUM I
OUT
(mA)
0
20 40 60 80
TEMPERATURE (°C)
U W
6101 G06
Input V
OS
vs Supply Voltage
40
20
0
–20
–40
–60
–80
T
A
= 85°C
R
IN
= 100
R
OUT
= 5k
V
IN
= 5mV
4
11
18
25 32 39
V
SUPPLY
(V)
T
A
= 0°C
T
A
= –40°C
T
A
= 45°C
Input Sense Range
2.5
T
A
= 25°C
T
A
= 0°C
T
A
= –40°C
2
T
A
= 70°C
1.5
T
A
= 85°C
T
A
= 125°C
1
–100
–120
–140
0.5
T
A
= 125°C
46
53
60
0
LTC6101
LTC6101HV
R
IN
= 3k
R
OUT
= 3k
4 10 20 30 40 50 60 70 80 90 100
V
SUPPLY
(V)
6101 G05
6101 G02
LTC6101HV: V
OUT
Maximum vs
Temperature
12
V
S
= 100V
10
V
S
= 12V
8
6
4
2
0
–40 –20
V
S
= 6V
V
S
= 5V
V
S
= 4V
LTC6101: I
OUT
Maximum vs
Temperature
7
6
5
4
3
2
V
S
= 4V
1
0
–40 –20
V
S
= 6V
V
S
= 12V
V
S
= 60V
100 120
0
20 40 60 80
TEMPERATURE (°C)
100 120
6101 G20
0
20 40 60 80
TEMPERATURE (°C)
100 120
6101 G07
6101fa
5
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