User Manual

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CL5ADAH2Z
Confidential
2020.11.05 rev.1.1
3.2. Power Supply Interface
3.2.1. Overview
The ALT1250 includes an integrated PMU. The PMU is designed to work directly from both
rechargeable and primary batteries. The PMU supplies current to all ALT1250 blocks, the IOs, the
External Flash, the TCXO and the UICC.
In addition, the PMU includes a low power RTC.
The power supply part of the module contains:
● RTC (Real Time Clock)
● APC (Advance Power Controller)
● different regulators (LDOs and DC-DC)
Table3 lists the definitions of the pins on the power supply interface
Pin No. Signal Name I/O Description voltage (V)
B1 VBAT_FEM I
Module input power supply
2.85-4.5
B2 VBAT_FEM I
B3 VBAT_FEM I
H1 VBAT I
Module input power supply
2.3-4.2
H5 VBAT I
C6 VDD_RF O
VDD_RF out
1.9
D10 VDD_XO O
VDD_XO out
1.9
E5 DCDC_1v3 O
DCDC_1v3 out
1.3
F3 VDD_DIG O
VDD_DIG
0.9
G10 VFLASH O
VFLASH out
1.8
H2 VDD_EXTRA O
VDD_EXTRA out
1.8
H5 VDD_GPM O
VDD_GPM out
1.1
K5 VDDIO_GPM O
VDDIO_GPM out
1.8
L4 VSIM O
VSIM out
1.8