Datasheet

TMC8462 Datasheet • Document Revision V1.5 • 2019-June-21
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Parameter Symbol Conditions Min Typ Max Unit
R
DSon
power switch R
ON
T
J
=25 °C 1 1.5 Ω
Over-current protection activation threshold
sourcing
I
OCH
Output sourc-
ing current
800 1200 1600 mA
Oscillator frequency f
OSC
Setting 00 (de-
fault)
240 kHz
Setting 01 130
Setting 10 470
Setting 11 890
Duty cycle limit dl 83 %
Schottky diode forward voltage V
SDF
I=350mA 0.60 0.80 V
Soft startup time 1 ms
5V auxiliary voltage regulator output voltage V
VDD5_OUT
4.75 5 5.25 V
5V auxiliary voltage regulator output current
limit
I
VDD5_OUT
10 mV
Table 214: Switching Regulator DC Characteristics
8.3.3 Digital IOs
All I/O lines include Schmitt-Trigger inputs to enhance noise margin.
Parameter Symbol Conditions Min Typ Max Unit
Input voltage low level V
INL
V
VCCIO
= 3.3V -0.3 0.8 V
Input voltage high level V
INH
V
VCCIO
= 3.3V 2.3 3.6 V
Input with pull-down V
IN
= 3.3V 5 30 110 µA
Input with pull-up V
IN
= 0V -110 -30 -5 µA
Input low current V
IN
= 0V -10 10 µA
Input high current V
IN
= V
DD
-10 10 µA
Output voltage low level V
OUTL
V
VCCIO
= 3.3V 0.4 V
Output voltage high level V
OUTH
V
VCCIO
= 3.3V 2.64 V
Output driver strength standard I
OUT_DRV
4 mA
Output driver strength LED outputs I
OUT_LED
8 mA
Driver strength NRESET I/O pin I
OUT_RST
Driven by internal un-
dervoltage detectors
High/Low
±5 ±30 µA
Table 215: Digital IOs DC Characteristics
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