Tolerance - Texas Instruments UCD3138 Technical Reference Manual

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Name
R0
R1
R2
ESDRES
Iconst
Current Sharing Mode
Tri-state or Slave mode
PWM average current Bus
Analog average current Bus or
Master mode
The period and the duty of 8-bit PWM current source and the state of the θ1 and θ2 switches can be
controlled through the current sharing control register (CSCTRL).
For more details please refer to Application Note on UCD3138 Current Sharing.
SNIU028A – February 2016 – Revised April 2016
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Figure 9-2.
Table 9-1. Tolerance
Typical + - %
10K 2
400 25
3.2K 25
250 25
250µA 2
Table 9-2.
CSCTRL.bit.TEST_MODE
0
1
3
Copyright © 2016, Texas Instruments Incorporated
Comment
Accurate internal resistor with temp. compensation
Resistor with switch resistance lump
Resistor support no more than 1 mA
ESD resistor
Use in PWM output current
Switch θ1
OFF OFF
ON OFF
OFF ON
Advanced Power Management Control Functions
Current Sharing Control
Switch θ2 Digital-PWM
OFF
ACTIVE
OFF
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