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UC2902 Fiches technique(PDF) 2 Page - Texas Instruments

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No de pièce UC2902
Description  Load Share Controller
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

UC2902 Fiches technique(HTML) 2 Page - Texas Instruments

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UC1902
UC2902
UC3902
CONNECTION DIAGRAM
DIL-8, SOIC-8 (Top View)
N, J and D Package
ELECTRICAL CHARACTERISTICS: Unless otherwise specified, TA = –55°C to +125°C for UC1902, –40°C to+85°C for
UC2902, 0°C to 70°C for UC3902, VCC = 5V, RADJR = 1kΩ, VADJ = 5V, COMP = 5nF capacitor to GND, VSHARE– = 0V, TA = TJ.
PARAMETERS
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Power Supply
Supply Current
SHARE+ = 1V, SENSE = 0V
4
6
mA
VCC = 20V
6
10
mA
Undervoltage Lockout
Startup Voltage
SHARE+ = 0.2V, SENSE = 0V, COMP = 1V
2.3
2.5
2.7
V
Hysteresis
SHARE+ = 0.2V, SENSE = 0V, COMP = 1V
60
100
140
mV
Current Sense Amplifier
Input Offset Voltage
0.1V
≤ SHARE+ ≤ 1.1V
–2.5
–0.5
1.5
mV
Gain SENSE to SHARE
0.1V
≤ SHARE+ ≤ 1.1V
–41
–40
-39
V/V
Input Resistance
0.6
1
1.5
k
Share Drive Amplifier
SHARE+ High
VCC = 2.5V, SENSE = –50mV, ISHARE+ = –1mA
1.2
1.4
V
VCC = 12V, SENSE = –250mV, ISHARE+ = –1mA
9.6
10
10.4
V
VCC = 20V, SENSE = –250mV, ISHARE+ = –1mA
9.6
10
10.4
V
SHARE+ Low
VCC = 2.5V, SENSE = +10mV, ISHARE+ = –1mA
20
50
mV
VCC = 12V, SENSE = +10mV, ISHARE+ = –1mA
20
50
mV
VCC = 20V, SENSE = +10mV, ISHARE+ = –1mA
20
50
mV
SHARE+ Output Voltage
Measures SHARE+, SENSE = 0mV, RSHARE+ = 200
Ω resistor
SHARE+ to GND
20
40
mV
CMRR
0
≤ SHARE– ≤ 1V , SENSE used as input to amplifier
50
90
dB
Load Regulation
Load on SHARE+, –1mA
≤ ILOAD ≤ –20mA, SENSE =
–25mV
020
mV
Short Circuit Current
SHARE+ = 0V, SENSE = –25mV
–85
–50
–20
mA
Slew Rate
SENSE = +10mV to –90mV Step, 200
Ω resistor SHARE+ to
GND
0.16
0.27
0.37
V/
µs
SENSE = –90mV to +10mV Step, 200
Ω resistor SHARE+ to
GND
0.12
0.24
0.34
V/
µs
Supply Voltage (ADJ and VCC) . . . . . . . . . . . . . . –0.3V to 20V
SENSE Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . –5V to +5V
ADJR, COMP Voltage. . . . . . . . . . . . . . . . . . . . . . –0.3V to +4V
SHARE–, SHARE+ Voltages . . . . . . . . . . . . . . . . –0.3V to 10V
SHARE+ Current . . . . . . . . . . . . . . . . . . . . . –100mA to +10mA
ADJ Current . . . . . . . . . . . . . . . . . . . . . . . . . . . –1mA to +30mA
Storage Temperature . . . . . . . . . . . . . . . . . . . –65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . –55°C to +150°C
Lead Temperature (Soldering, 10sec.) . . . . . . . . . . . . . +300°C
All voltages are with respect to pin 1. Currents are positive into,
negative out of the specified terminal. Consult Packaging Sec-
tion of the Databook for thermal limitations and considerations
of packages.
ABSOLUTE MAXIMUM RATINGS


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