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UC2902 Fiches technique(PDF) 4 Page - Texas Instruments

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No de pièce UC2902
Description  LOAD SHARE CONTROLLER
Download  10 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

UC2902 Fiches technique(HTML) 4 Page - Texas Instruments

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UC2902
UC3902
SLUS232E − DECEMBER 19, 2002 − REVISED JULY 2011
4
www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
TJ = –40°C to 105°C, (unless otherwise noted)
PARAMETER
UNIT
MAX
TYP
MIN
TEST CONDITIONS
SHARE SENSE AMPLIFIER
R
Input impedance
V(SHARE+) = 1 V,
V(SHARE−) = GND
V(SENSE) = 10 mV
8
15
RIN
Input impedance
R(SHARE+) = 200 Ω (SHARE+ to GND)
V(SHARE−) = 1 V,
V(SENSE) = 10 mV
8
15
V(SHARE)
Threshold voltage
V(SENSE) = 0 V
41
70
100
mV
CMRR
Common mode rejection ratio
0 V ≤ V(SHARE−) ≤ 1 V, V(SENSE) = −2.5 mV
50
60
AVOL
DESCRIPTION from SHARE+ to
V(SENSE) = −2.5 mV,
5 nF capacitor from COMP to GND,
1 kΩ resistor from ADJR to GND
50
68
dB
AVOL
DESCRIPTION from SHARE+ to
ADJR
V(SENSE) = −2.5 mV,
5 nF capacitor from COMP to GND,
150 Ω resistor from ADJR to GND
50
66
dB
Slew rate
V(SHARE+) = 0 mV to 10 V step through a 200-Ω
resistor, R(COMP) = 500 Ω,
V(SENSE) = 10 mV, VCC = 10 V
0.2
0.5
0.8
V/μs
ERROR AMPLIFIER
gM
Transconductance, SHARE+ to
COMP
200-Ω resistor SHARE+ to GND
3.0
4.5
6.0
mS
IOH
High-level output current
V(COMP) = 1.5 V,
SHARE+ ≥ 300 mV
V(SENSE) = −10 mV
−450
−325
−200
A
IOL
Low-level output current
200-Ω resistor SHARE+ to GND,
V(COMP) = 1.5 V,
V(SENSE) = 10 mV
80
150
250
μA
VIO
Input offset voltage
15
35
65
mV
ΔVIO/
ΔV(SENSE)
1-kΩ resistor ADJR to GND
−2.5 mV ≤ V(SENSE) ≤ −25 mV
−6
0
6
mV/V
ADJ AMPLIFIER
ADJR low voltage
200-Ω resistor SHARE+ to GND,
V(SENSE) = 10 mV
−1
0
1
mV
ADJR high voltage
V(SENSE) = 10 mV, V(SHARE+) = 1 V
1.4
1.8
2.1
V
I(ADJR) = −0.5 mA, V(ADJ) = 2.5 V,
V(SENSE) = 10 mV, V(SHARE+) = 1 V
0.96
0.99
1.02
Current gain ADJR to ADJ
I(ADJR) = −0.5 mA, V(ADJ) = 20 V,
V(SENSE) = 10 mV, V(SHARE+) = 1 V
0.96
0.99
1.02
A/A
Current gain ADJR to ADJ
I(ADJR) = −10 mA, V(ADJ) = 2.5 V,
V(SENSE) = 10 mV, V(SHARE+) = 1 V
0.96
0.99
1.02
A/A
I(ADJR) = −10 mA, V(ADJ) = 20 V,
V(SENSE) = 10 mV, V(SHARE+) = 1 V
0.96
0.99
1.02


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