Software Feature Description
Figure 4. Buck and Boost Converters Section
4.4
LDOs — TPS65800 (See
for Corresponding Outputs for TPS65810/820/825)
For the following descriptions of the LDO settings, see
LDO 0:
Fixed at 3.3 VDC, the output is disabled on power up and can be enabled by checking the box.
RTC:
Fixed at 3.1 VDC, the output is enabled on power up and can be disabled by unchecking the box.
SIM:
Set to 1.8 VDC, and can be changed to 3 VDC; output is disabled on power up and can be enabled
by checking the box.
LDO 1:
Default set to 2.85 VDC, and the output can be changed, after power up, via I2C by selecting 1 of
8 settings between 1.25 VDC to 3.3 VDC.
LDO 2:
Default set to 3.3 VDC, and the output can be changed, after power up, via I2C by selecting 1 of 8
settings between 1.25 VDC to 3.3 VDC.
LDO 3:
Default set to 1.2495 VDC, and the output can be set, after power up, via I2C within the range of
1.22 VDC to 4.46 VDC (128 setting steps).
LDO 4:
Default set to 2.754 VDC, and the output can be set, after power up, via I2C within the range of
1.22 VDC to 4.46 VDC (128 setting steps).
LDO 5:
Default set to 2.805 VDC, and the output can be set, after power up, via I2C within the range of
1.22 VDC to 4.46 VDC (128 setting steps).
LDO 1–5:
•
Output is enabled on power up and comes up to default setting for TPS65800. For TPS65810, outputs
are disabled on power up and have to be enabled by I2C for use.
•
LDO x Discharge, where x=1-5: If box is checked, a resistor is applied when the output is disabled to
discharge the capacitor.
•
Enable LDO x, where x=1-5: The output can be disabled by unchecking the box.
10
TPS658xxEVM Integrated Single-Cell, Lithium-Ion Battery- and Power-
SLVU154B – March 2006 – Revised October 2013
Management IC With I2C, LED Drives, Two Synchronous Buck, Boost, and
Copyright © 2006–2013, Texas Instruments Incorporated
Multiple LDOs