Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
For more information on lead free part marking, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
2940f
2
LT2940
ELECTRICAL CHARACTERISTICS
SYMBOL
Supply
V
CC
I
CC
V
CC(UVLC)
ΔV
CC(HYST)
Voltage Sense
V
VSEN(OR)
Voltage Sense Pin Operating Range
V
+
Pin and V
–
Pin
V
V
V
CC
≤ 12V
12V < V
CC
< 30V
V
CC
≥ 30V
Voltage Sense Differential Input Voltage Range V
CC
< 11V
(Note 5)
V
V
= V
V
+
– V
V
–
V
V(CL)
I
VSEN
ΔI
VSEN
Current Sense
V
ISEN(OR)
V
I
Current Sense Pin Operating Range
I
+
Pin and I
–
Pin
Current Sense Differential Input Voltage
Range (Note 6)
V
I
= V
I
+
– V
I
–
Current Sense Differential Clipping Limit
(Note 6)
Current Sense Input Bias Current
I
+
Pin and I
–
Pin
Current Sense Input Offset Current
ΔI
ISEN
= I
I
+
– I
I
–
Power Monitor Output Current Operating
Range
Power Monitor Output Current Capability
V
CC
≥ 12V, V
PMON
≥ 0V, and
V
V
= –9V, V
I
= –225mV, or
V
V
= 9V, V
I
= 225mV
V
CC
≥ 12V, V
PMON
≥ 0.5V, and
V
V
= –9V, V
I
= 225mV, or
V
V
= 9V, V
I
= –225mV
V
CC
≥ 12V, V
PMON
≥ 4V, and
V
V
= –9V, V
I
= 225mV, or
V
V
= 9V, V
I
= –225mV
V
I
+
= V
I
–
l
l
l
l
l
l
l
l
l
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. All specifications apply at 6V ≤ V
CC
≤ 80V, unless otherwise specified.
PARAMETER
Supply Voltage Operating Range
Supply Current
Supply Undervoltage Latch Clear
Supply Undervoltage Hysteresis
I
PMON
= +200μA, I
IMON
= +200μA
(Note 2)
V
CC
Falling
V
CC
Rising
CONDITIONS
l
l
l
l
MIN
6
2
2.3
20
–0.1
–0.1
–0.1
±(V
CC
– 3)
±8
±9
–300
TYP
MAX
80
UNITS
V
mA
V
mV
V
V
V
V
V
V
3.5
2.5
75
5
2.7
100
V
CC
– 3
9
18
V
CC
≥ 11V
V
CC
≥ 12V
Voltage Sense Differential Clipping Limit
(Note 5)
Voltage Sense Input Bias Current
V
+
Pin and V
–
Pin
Voltage Sense Input Offset Current
ΔI
VSEN
= I
V
+
– I
V
–
–100
±50
100
±150
nA
nA
V
V
+
= V
V
–
l
4
±200
80
V
mV
V
I(CL)
I
ISEN
ΔI
ISEN
l
l
l
±225
75
100
±200
125
±800
mV
μA
nA
Power Monitor (Note 2)
I
PMON(OR)
I
PMON(CAPA)
l
l
±200
900
1200
μA
μA
l
–240
–1200
μA
l
–800
–1200
μA
2940f
3
LT2940
ELECTRICAL CHARACTERISTICS
SYMBOL
V
PMON
PARAMETER
Power Monitor Output Compliance Voltage
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. All specifications apply at 6V ≤ V
CC
≤ 80V, unless otherwise specified.
CONDITIONS
V
CC
≤ 12V, I
PMON
≥ 0μA
12V < V
CC
< 30V, I
PMON
≥ 0μA
V
CC
≥ 30V, I
PMON
≥ 0μA
V
CC
≤ 12V, I
PMON
< 0μA
12V < V
CC
< 30V, I
PMON
< 0μA
V
CC
≥ 30V, I
PMON
< 0μA
l
l
l
l
l
l
MIN
0
0
0
0.5
0.5
0.5
TYP
MAX
V
CC
– 4.5
7.5
12
V
CC
– 4.5
7.5
12
UNITS
V
V
V
V
V
V
%FS
%FS
%FS
%FS
%FS
μA /V
2
mV
mV
μA
MHz
μA
E
PMON
Power Monitor Output Total Error (Note 4)
|V
V
• V
I
| ≤ 0.4V
2
|V
V
• V
I
| ≤ 0.4V
2
, 25°C < T
A
≤ 85°C
|V
V
• V
I
| ≤ 0.4V
2
, LT2940C
|V
V
• V
I
| ≤ 0.4V
2
, LT2940I
Quadrants I and III of Shaded Region
in Figure 4
l
l
l
l
l
l
l
±2
±2.5
±2.5
±3.5
±5
485
500
±40
±2
±6
0.5
l
±5
±7
±9
±12
±15
515
±100
±6
±15
K
PMON
V
V(OSP)
V
I(OSP)
I
PMON(OS)
BW
PMON
I
IMON(FS)
V
IMON
Power Monitor Scaling Coefficient
I
PMON
= K
PMON
• V
V
• V
I
Power Monitor Voltage Sense Input-Referred
Offset Voltage
Power Monitor Current Sense Input-Referred
Offset Voltage
Power Monitor Output Offset Current
Power Monitor Output Bandwidth
Current Monitor Output Current Operating
Range
Current Monitor Output Compliance Voltage
|V
V
• V
I
| = 0.4V
2
V
V
= 0V
V
I
= 0mV
V
V
–
= 0V, V
I
= 0mV
R
PMON
= 2k
Current Monitor (Note 2)
±200
0
0
0
0.5
0.5
0.5
±1.5
l
l
l
l
l
V
CC
≤ 12V, I
IMON
≥ 0μA
12V < V
CC
< 30V, I
IMON
≥ 0μA
V
CC
≥ 30V, I
IMON
≥ 0μA
V
CC
≤ 12V, I
IMON
< 0μA
12V < V
CC
< 30V, I
PMON
< 0μA
V
CC
≥ 30V, I
PMON
< 0μA
l
l
l
l
l
l
V
CC
– 4.5
7.5
12
V
CC
– 4.5
7.5
12
±3
±3.5
±4
±5
1025
±7
±2
±2
±2.5
V
V
V
V
V
V
%FS
%FS
%FS
%FS
μA /V
mV
MHz
E
IMON
Current Monitor Output Total Error (Note 4)
|V
I
| ≤ 200mV, 25°C ≤ T
A
≤ 85°C
|V
I
| ≤ 200mV, LT2940C
|V
I
| ≤ 200mV, LT2940I
200mV < |V
I
| ≤ 225mV
G
IMON
V
I(OSI)
BW
IMON
Comparator
V
CMP(TH)
ΔV
CMP(HYST)
I
CMP(BIAS)
I
CMPOUT(OL)
Current Monitor Scaling, I
IMON
= G
IMON
• V
I
Current Monitor Current Sense Input-Referred
Offset Voltage
Current Monitor Output Bandwidth
Comparator Threshold Voltage
Comparator Threshold Hysteresis
Comparator Input Bias Current
CMPOUT Output Low Voltage
V
I
= ±200mV
975
1000
±2.5
1
R
IMON
= 2k
CMP
+
Rising
CMP
+
Falling
1V ≤ V
CMP+
≤ 1.5V
CMP
+
High, I
CMPOUT
= 3mA
l
l
l
l
1.222
–15
1.240
–35
±100
0.2
1.258
–60
±300
0.4
V
mV
nA
V
2940f
4
LT2940
ELECTRICAL CHARACTERISTICS
SYMBOL
I
CMPOUT(LK)
I
CMPOUT(OL)
I
CMPOUT(LK)
t
DLY
V
LATCH(IL)
V
LATCH(IO)
V
LATCH(IH)
I
LATCH(LK)
I
LATCH(BIAS)
PARAMETER
CMPOUT Leakage Current
CMPOUT
Output Low Voltage
CMPOUT
Leakage Current
Comparator Propagation Delay
LATCH Input Low Voltage
LATCH Input Open Voltage
LATCH Input High Voltage
LATCH Input Allowable Leakage in
Open State
LATCH Input Bias Current
V
LATCH
= 0V
V
LATCH
= 80V
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
All currents into pins are positive, and all voltages are referenced
to GND unless otherwise noted. Current sourced by the PMON pin or the
IMON pin is defined as positive; current sunk as negative.
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. All specifications apply at 6V ≤ V
CC
≤ 80V, unless otherwise specified.
CONDITIONS
CMP
+
Low, V
CC
= 36V,
0.4V ≤ V
CMPOUT
≤ 36V
CMP
+
Low, I
CMPOUT
= 3mA
CMP
+
High, V
CC
= 36V,
0.4V ≤ V
CMPOUT
≤ 36V
Output Pulling Down
l
l
l
l
l
l
l
l
l
l
MIN
TYP
±0.15
0.2
±0.15
0.7
MAX
±1
0.4
±1
2
1.2
1.95
2.5
±10
UNITS
μA
V
μA
μs
V
V
V
μA
μA
μA
0.5
1.25
2.0
0.8
1.5
2.2
–11
11
–17
17
–23
23
Note 3:
The LT2940 may safely drive its own PMON and IMON output
voltages above the absolute maximum ratings. Do not apply any external
source that drives the voltage above absolute maximum.
Note 4:
Full-scale equals ±200μA.
Note 5:
V
+
and V
–
pin voltages must each fall within the voltage sense pin
operating range specification.
Note 6:
I
+
and I
–
pin voltages must each fall within the current sense pin
[i=s] This post was last edited by liujj05 on 2016-4-13 15:56 [/i] You guys just read this story, I will also follow up the latest situation in time. The thing is this: ======================Backgroun...
This section provides some notes and supplementary content mentioned in each section of this guide.
Available breakpoints and watchpoints
The ESP32 debugger supports 2 hardware breakpoints and 64 soft...
[size=4] 0 Introduction Radio frequency identification (RFID) technology is a non-contact automatic identification technology that has emerged since the 1990s. It uses the transmission characteristics...
[i=s]This post was last edited by ohahaha on 2021-5-20 15:02[/i]The new infrastructure that conforms to the times includes: 5G infrastructure, ultra-high voltage, high-speed rail, new energy vehicle c...
The most significant event in the technology circle during this period is undoubtedly the news that ZTE was banned by the United States. Once the news came out, it shocked the entire Chinese techno...[Details]
On the eve of Qingming Festival, the trade friction between China and the United States is on the rise. Let's follow the automotive electronics editor to learn more about the relevant content. Ba...[Details]
On April 16, the U.S. Department of Commerce announced that it would ban U.S. companies from selling parts, goods, software, and technology to
ZTE
for seven years, until March 13, 2025.
Th...[Details]
The parking assistance system is an important application of the active anti-collision system of automobiles in low-speed and complex urban environments, and is also a specific embodiment of the inte...[Details]
In most countries, the military is a fairly large group, and the health of soldiers is particularly important to the combat effectiveness of the army. The US Department of Defense's Advanced Resear...[Details]
1. FSMC Brief FSMC, the Flexible Static Storage Controller, is capable of interfacing with synchronous or asynchronous memories and 16-bit PC memory cards. The FSMC interface of STM32 s...[Details]
From the functional classification, it can be divided into: 1. Active control ADAS: ACC/AEB/LKS, etc. 2. Warning ADAS: FCW/LDW/PCW, etc. 3. Other auxiliary ADAS: BSD/ADB/panora...[Details]
Mixed reality (augmented and virtual reality) is the next computing frontier after the PC in the 1970s, the web in the 1990s, and mobile platforms in the 21st century.
MR
is the most unique...[Details]
MCU Programming: Find the average value of 8 unsigned numbers. There are 8 unsigned numbers stored in 8 units of the internal RAM starting at 20H. It is required to save their average value in R2. ;-...[Details]
The circuit shown in the figure requires that the light is off when the machine is turned on. Press the button once, and the light D1 will turn on and automatically turn off after a delay of 10 secon...[Details]
In the 51 single-chip microcomputer's on-chip data memory units 20H and 21H, the data 9 and 2 are stored respectively. Write a program to calculate the difference and product between the two. The d...[Details]
The CAN of the STM32 ordinary chip has 14 filter groups (the interconnected type has 28 filter groups) to filter the received frames. Each filter group includes 2 configurable 32-bit registers: CAN_F...[Details]
The record harmony method is as follows: Note: This method is compatible with the C32 compiler, not the XC32 compiler; 1. cmd opens the command window; 2. cd to the pic32-upgrader file where you inst...[Details]
Microcontroller MCU
京公网安备 11010802033920号
EEWORLD
