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UCS81003AMR-C1A Folha de dados(PDF) 10 Page - Microchip Technology

Nome de Peças UCS81003AMR-C1A
Descrição Electrónicos  Automotive USB Port Power Controller with Charger Emulation
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Fabricante Electrônico  MICROCHIP [Microchip Technology]
Página de início  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

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UCS81003
DS20005334A-page 10
 2014 Microchip Technology Inc.
Port Power Switch Operation With Trip Mode Current Limiting
Region 2 Current Keep-Out
IBUS_R2MIN
—0.12
A
Minimum VBUS Allowed at
Output
VBUS_MIN
1.5
2.0
2.25
V
Note 5
Port Power Switch Operation with Constant Current Limiting (Variable Slope)
Region 2 Current Keep-Out
IBUS_R2MIN
—1.68
A
Minimum VBUS Allowed at
Output
VBUS_MIN
1.5
2.0
2.25
V
Note 5
Current Measurement - DC
Current Measurement
Range
IBUS_M
0
2988.6
mA
Range 0 – 255 LSB
(see Note 4)
Reported Current
Measurement Resolution
DIBUS_M
11.72
mA
1 LSB
Current Measurement
Accuracy
±2
%
180 mA < IBUS < ILIM
—±2
LSB
IBUS < 180 mA
Current Measurement - AC
Sampling Rate
500
µs
Charge Rationing - DC
Accumulated Current
Measurement Accuracy
—±4.5
%
Charge Rationing - AC
Current Measurement
Update Time
tPCYCLE
—1
s
Attach/Removal Detection
VBUS Bypass - DC
On Resistance
RON_BYP
—50
Leakage Current
ILEAK_BYP
3
µA
Switch off, TA <+85°C, Note 2
Current Limit
IDE-
T_CHG/IBUS_BY
P
—2
mA
VDD = 5V and VBUS > 4.75V
Attach/Removal Detection - DC
Attach Detection Threshold
IDET_QUAL
800
µA
Programmable 200 – 1000 µA,
default listed.
TABLE 1-2:
ELECTRICAL CHARACTERISTICS (CONTINUED)
Electrical Characteristics: Unless otherwise specified, VDD = 4.5V to 5.5V, VS = 2.9V to 5.5V, VPULLUP = 3V to 5.5V,
TJ = -40°C to +125°C; all Typical values at VDD = VS = 5V, TJ = +27°C.
Characteristic
Sym.
Min.
Typ.
Max.
Unit
Conditions
Note 1:
For split supply systems using the Attach Detection feature, VS must not exceed VDD +150 mV.
2:
This parameter is ensured by design and is not 100% tested.
3:
This parameter is characterized, but not 100% production tested.
4:
The current measurement full-scale range maximum value is 3.0A. However, the UCS81003 cannot report
values above ILIM (if IBUS_R2MIN  ILIM) or above IBUS_R2MIN (if IBUS_R2MIN > ILIM and ILIM 1.68A).
5:
The Minimum and Maximum values represent the boundaries of a programmable range. Each value in the
range is typical.


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