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参数资料
| 型号： | LTC2942IDCB#TRPBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO6 |
| 封装： | 2 X 3 MM, LEAD FREE, PLASTIC, MO-229, DFN-6 |
| 文件页数： | 12/18页 |
| 文件大小： | 227K |
| 代理商： | LTC2942IDCB#TRPBF |
LTC2942
3
2942fa
elecTrical characTerisTics The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 2)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
qLSB
Charge LSB (Note 4)
Prescaler M = 128 (Default), RSENSE = 50mΩ
0.085
mAh
TCE
Total Charge Error (Note 5)
10mV ≤ |VSENSE| ≤ 50mV DC
±1
%
10mV ≤ |VSENSE| ≤ 50mV DC, VSENSE + ≤ 4.2V
l
±1.5
%
1mV ≤ |VSENSE| < 50mV DC (Note 8)
l
±3.5
%
Voltage Measurement ADC
Resolution (No Missing Codes)
(Note 8)
l
14
Bits
VFS
Full-Scale Voltage
l
6
V
VLSB
Quantization Step of 14-Bit
Voltage ADC
(Note 6)
366.2
V
TUEV
Voltage Total Unadjusted Error
l
1
1.3
%
Gain
Gain Accuracy
l
1.3
%
VOS
Offset
Extrapolated from Measurements at 5.5V and 2.7V
±1
±10
LSB
INL
Integral Nonlinearity
l
±1
±4
LSB
tCONV
Conversion Time
l
15
ms
Temperature Measurement ADC
Resolution (No Missing Code)
(Note 8)
10
Bits
TFS
Full-Scale Temperature
l
600
K
TLSB
Quantization Step of 10-Bit
Temperature ADC
(Note 6)
0.586
K
TUET
Temperature Total Unadjusted
Error
VSENSE+ ≥ 2.8V (Note 8)
l
±5
±3
K
tCONV
Conversion Time
l
15
ms
Digital Inputs and Digital Outputs
VITH
Logic Input Threshold, AL/CC,
SCL, SDA
l
0.3 VSENSE+
0.7 VSENSE+
V
VOL
Low Level Output Voltage, AL/CC,
SDA
I = 3mA
l
0.4
V
IIN
Input Leakage, AL/CC, SCL, SDA
VIN = VSENSE+/2
l
1
A
CIN
Input Capacitance, AL/CC, SCL,
SDA
(Note 8)
l
10
pF
tPCC
Minimum Charge Complete (CC)
Pulse Width
1
s
I2C Timing Characteristics
fSCL(MAX)
Maximum SCL Clock Frequency
l
400
900
kHz
tBUF(MIN)
Bus Free Time Between STOP/
START
l
1.3
s
tSU,STA(MIN) Minimum Repeated START
Set-Up Time
l
600
ns
tHD,STA(MIN) Minimum Hold Time (Repeated)
START Condition
l
600
ns
tSU,STO(MIN) Minimum Set-Up Time for STOP
Condition
l
600
ns
tSU,DAT(MIN) Minimum Data Set-Up
Time Input
l
100
ns
tHD,DATI(MIN) Minimum Data Hold Time Input
l
0
s
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