Other Parts Discussed in Thread: TPS73101-EP, TLV70018-Q1
Hello
I am curious about the difference between configuring the LDO for eFUSE power and using the LDO3 of PMIC-B.
PDN Note (v0.18)
6) SoC devices come in two types: General Purpose (GP) & High Security (HS). All GP devices can leave the VPP domains unconnected per DM. Pre-programmed HS devices can also
leave VPP domains unconnected if no additional EFUSE programming is needed. If customer desires to on-board EFUSE programming, then an additional 1.8V, 100mA LDO is
needed with a high impedance output when LDO is disabled. Recommended PNs: TPS73101-EP, fixed 1.8V TPS73118-Q1 or TLV70018-Q1. The EN_EFUSE_VPP control signal can
be sourced from either a PMIC or SoC unused GPIO. Either approach will allow SoC SW to control Efuse VPP voltage level by enabling & disabling dedicated LDO as needed to
program High Security SoC Efuses (see SoC DM for details).
