EFP01 datasheet(4/158 Pages) SILABS

4 / 158 page

Table of Contents

1. Feature List ................................ 2

2. Ordering Information ............................ 3

3. System Overview .............................. 7

3.1 Introduction ............................... 7

3.2 Power ................................. 9

3.2.1 DCDC A Overview ........................... 9

3.2.2 DCDC B Overview ...........................17

3.2.3 LDO B and LDO C Overview ........................19

3.2.4 Coarse Regulators ...........................21

3.3 Energy Modes ..............................22

3.3.1 Energy Mode Control ..........................22

3.3.2 EM0 ................................23

3.3.3 EM2 ................................23

3.3.4 EM4 ................................24

3.4 Measurement ..............................24

3.4.1 Coulomb Counter

...........................24

3.4.2 Analog to Digital Converter (ADC) ......................26

3.5 Memory ................................27

3.5.1 OTP ................................27

3.5.2 Registers ..............................27

3.6 Communications and Other Digital Peripherals ...................27

3.6.1 Inter-Integrated Circuit Interface (I2C) .....................27

3.6.2 Interrupt Output (IRQ) ..........................28

3.7 System Protection .............................28

3.7.1 Under-voltage Lockout (UVLO) .......................28

3.7.2 Power-on Reset (POR)..........................28

3.7.3 Over-Voltage Protection .........................28

3.7.4 Short Circuit Tolerance ..........................29

3.8 Startup & Shutdown Behavior .........................29

3.8.1 Startup Behavior ............................29

3.8.2 Shutdown Behavior ...........................29

4. Typical Connection Diagrams

........................ 30

4.1 Device Configurations

...........................30

4.1.1 Wired Buck Configuration (EFP0101 & EFP0102) .................30

4.1.2 Wired Buck with LDO C Configuration (EFP0103 & EFP0104)

............31

4.1.3 Buck/Boost Configuration (EFP0106 & EFP0107)

................32

4.1.4 Single-Cell Boost Configuration (EFP0108) ...................33

4.1.5 Wired Boost Configuration (EFP0109 & EFP0110) ................34

4.1.6 Boost Bootstrap Configuration (EFP0111) ...................35

5. Electrical Specifications

.......................... 36

5.1 Electrical Characteristics

..........................36

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