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RT5021 数据表(PDF) 49 Page - Richtek Technology Corporation |
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RT5021 数据表(HTML) 49 Page - Richtek Technology Corporation |
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49 / 67 page ![]() RT5021 49 DS5021-01 April 2013 www.richtek.com Copyright 2013 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. © Address Name Register Address Bit7 (MSB) Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bit0 (LSB) Meaning PSM1 PSM2 PSM3 PSM4 VOUT8 [3:0] Default 1 1 1 1 1 1 0 0 A3 0x03 Read/Write R/W R/W R/W R/W R/W R/W R/W R/W Define the CH1/2/3/4 CCM or PWM/PSM switching operation. 0 : Force PWM PSM1 to PSM4 1 : Automatic PWM/PSM switch operation CH8 regulation voltage can be selected by I 2C interface. The default voltage is 2.8V. Code Voltage Code Voltage Code Voltage Code Voltage 0000 Switch 0001 1.1V 0010 1.2V 0011 1.3V 0100 1.4V 0101 1.5V 0110 1.6V 0111 1.7V 1000 1.8V 1001 2V 1010 2.2V 1011 2.5V VOUT8 [3:0] 1100 2.8V 1101 3.1V 1110 3.2V 1111 3.3V Address Name Register Address Bit7 (MSB) Bit6 Bit5 Bit4 Bit3 Bit2 Bit Bit0 (LSB) Meaning VOUT1 [3:0] EN1 FB2 [2:0] Default 1 0 1 0 0 1 0 0 A4 0x04 Read/Write R/W R/W R/W R/W R/W R/W R/W R/W CH1 regulation voltage can be selected by I 2 C interface. The default voltage is 5V. Code Voltage Code Voltage Code Voltage Code Voltage 0000 3.6V 0001 3.7V 0010 3.8V 0011 3.9V 0100 4V 0101 4.5V 0110 4.6V 0111 4.7V 1000 4.8V 1001 4.9V 1010 5V 1011 5.1V VOUT1 [3:0] 1100 5.2V 1101 5.3V 1110 5.4V 1111 5.5V Enable/Disable CH1 when sequence ID is SEO#0. In SEO#0, CH1 is not the power on/off sequence. In other sequence. CH1 is in sequence control and on/off by the pin EN, not by the register bit EN1. 0 : Disable EN1 1 : Enable FB2 regulation voltage can be selected by I 2 C interface. The default voltage is 0.8V. Code VREF If Target = 1.8V If Target = 1V If Target = 3.3V 000 0.72V 1.62V 0.9V 2.97V 001 0.74V 1.665V 0.925V 3.0525V 010 0.76V 1.71V 0.95V 3.135V 011 0.78V 1.755V 0.975V 3.2175V 100 0.8V 1.8V 1V 3.3V 101 0.82V 1.845V 1.025V 3.3825V 110 0.84V 1.89V 1.05V 3.465V FB2 [2:0] 111 0.86V 1.935V 1.075V 3.5475V |
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