TIOS101 Datasheet, PDF (12/26 Pages) Texas Instruments – Digital Sensor Output Drivers with Integrated Surge Protection

TIOS101
SLLSEV6 – JULY 2017
8.3.5 Device Function Tables
EN
L / Open
H
H
IN
X
L
H / Open
Table 2. Driver Function
OUT
Hi-Z
H
L
COMMENT
Device is in ready-to-receive state
OUT is sourcing current (high-side drive)
OUT is sinking current (low-side drive)
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EN
H
H
L / Open
IN
H / Open
L
X
Table 3. Current Limit Indicator Function (t > t_SC)
OUT CURRENT
NFAULT
COMMENT
| I_(OUT) | > I_O(LIM)
| I_(OUT) | < I_O(LIM)
| I_(OUT) | > I_O(LIM)
| I_(OUT) | < I_O(LIM)
X
L
OUT current exceeds the set limit for over t_SC
Z
Normal operation
L
OUT current exceeds the set limit for over t_SC
Z
Normal operation
Z
Driver is disabled, current limit indicator is inactive
8.3.6 The Integrated Voltage Regulator (LDO)
The TIOS101-3 and TIOS101-5 each have an integrated linear voltage regulator (LDO) which can supply power
to external components. The voltage regulator is specified for VCC voltages in the range of 7 V to 36 V with
respect to GND. The LDO is capable of delivering up to 20 mA. The LDO output is current limited to 35-mA to
limit the inrush current onto VCC_OUT decoupling capacitors during initial power up.
The LDO is designed to be stable with standard ceramic capacitors with values of 1 μF or larger at the output.
X5R- and X7R-type capacitors are best because they have minimal variation in value and ESR over temperature.
Maximum ESR should be less than 1 Ω. With tolerance and dc bias effects, the minimum capacitance to ensure
stability is 1 μF.
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