Datasheet DA9131-A (Dialog Semiconductor) - 8

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DA9131-A High-Performance, Dual-Channel DC-DC Converter 2 Pinout LX2 LX2 PGND PGND PGND PGND LX1 LX1
17 18 19 20 21 22 23 24
PVDD2
16 1
PVDD1 PVDD2
15 2
PVDD1 SCL/ GPIO2
14 3
GPIO3 FB2N
13 4
FB1N
12 11 10 9 8 7 6 5
CONF/ SDA/ FB2P GPIO1 AGND AVDD IC_EN FB1P GPIO0 GPIO4 Figure 4: DA9131-A Pinout Diagram (Bottom View) Table 1: Pin Description Pin # Pin Name Type (Table 2) Drive Description (mA)
1, 2 PVDD1 PS 5000 Supply for Ch1 3 SCL/GPIO3 DIO 15 SCL 4 FB1N AI 10 Negative feedback for Ch 1 5 FB1P AI 10 Positive feedback for Ch 1 6 SDA/GPIO4 DIO 15 SDA 7 IC_EN DI 10 IC enable. Also used for HW test mode entry and OTP writing. 8 AVDD PS 10 Analog supply 9 AGND PS 10 Analog ground 10 GPIO0 DIO 10 GPIO 11 CONF/GPIO1 DIO 10 GPIO 12 FB2P AI 10 Positive feedback for Ch 2 13 FB2N AI 10 Negative feedback for Ch 2 14 GPIO2 DIO 10 GPIO 15, 16 PVDD2 PS 5000 Supply for Ch2 17, 18 LX2 AO 5000 Buck output of Ch 2 19, 20, 21, 22 PGND PS 5000 Power ground
Datasheet Revision 1.0 31-Aug-2020
CFR0011-120-00 8 of 53 © 2020 Dialog Semiconductor Document Outline General Description Key Features Benefits Applications System Diagrams Contents Table of Figures Table of Tables 1 Terms and Definitions 2 Pinout 3 Characteristics 3.1 Absolute Maximum Ratings 3.2 Recommended Operating Conditions 3.3 Thermal Characteristics 3.3.1 Thermal Ratings 3.3.2 Power Dissipation 3.4 ESD Characteristics 3.5 Buck Characteristics 3.6 Performance and Supervision Characteristics 3.7 Digital I/O Characteristics 3.8 Timing Characteristics 3.9 Typical Performance 4 Functional Description 4.1 DC-DC Buck Converter 4.1.1 Switching Frequency 4.1.2 Operation Modes and Phase Selection 4.1.3 Output Voltage Selection 4.1.4 Soft Start-Up and Shutdown 4.1.5 Current Limit 4.1.6 Resistive Divider 4.1.7 Thermal Protection 4.2 Internal Circuits 4.2.1 IC_EN/Chip Enable/Disable 4.2.2 nIRQ/Interrupt 4.2.3 GPIO 4.2.3.1 GPIO Pin Assignment 4.2.3.2 GPIO Function 4.2.3.3 Chip Configuration Select (CONF) 4.3 Operating Modes 4.3.1 ON 4.3.2 OFF 4.4 I2C Communication 4.4.1 I2C Protocol 5 Register Definitions 5.1 Register Map 5.1.1 System 5.1.2 Buck1 5.1.3 Buck2 5.1.4 Serialization 6 Package Information 6.1 Package Outlines 6.2 Moisture Sensitivity Level 6.3 Soldering Information 7 Ordering Information 8 Application Information 8.1 Capacitor Selection 8.2 Inductor Selection