DS5028E Datasheet, PDF (33/41 Pages) Richtek Technology Corporation – Integrated PMIC with 4-Channel Synchronous Buck Converters, 8 LDOs, and MTP Non-Volatile Memory for Industrial Applications

RT5028E
0000 : First turn on channel decide the
RESET_DLY time.
0001 : Buck1 decide the RESET_DLY time.
Soft-Start End Control ^….
[5:2]
@ MASK_GPIO = 0
(External Enable pin
0100 : Buck1 decide the RESET_DLY time.
0101 : LDO1 decide the RESET_DLY time.
define)
….
1100 : LDO8 decide the RESET_DLY time.
….
1111 : LDO8 decide the RESET_DLY time.
Voltage Level
00 : When output voltage arrives to 80%
[1:0]
Soft-Start Voltage level
/ time soft-start control.
VTarget, next channel will turn on.
Soft-start time interval (TSS) :
01 : 1ms
10 : 4ms
11 : 8ms
Address 33
Buck Syn-Clock Control
Bit Name
Description
[7:6] VCO_VRC
VCO input voltage slop.
00: 25mV/10s, 01: 25mV/20s
10: 25mV/40s, 11: 25mV/80s
Note :
The VCO’s voltage input range is 0.375V to
1.8V and the output frequency is 450kHz to
2MHz.
[5:0] VCO_DVS
VCO input voltage DVS control
000000 : 0.375V (450kHz)
………
111001 : 1.8V (2MHz)
………
111111 : 1.8V (2MHz)
Address 34
Buck Syn-Clock Spread Spectrum Control
Bit Name
Description
[7:1] Reserved
0 SSOSC
Buck Clock Spread Spectrum Control
0 : Disable spread spectrum function.
1 : Turn on spread spectrum function.
Address 3A
EEPROM (MTP) Control
Bit Name
Description
[7:6] Reserved
5 MTP Page 2 Read
Read MTP Page 2
4 MTP Page 1 Read
Read MTP Page 1
[3:2] Reserved
1 MTP Page 2 write
Write MTP Page 2, and MTP also needs to be
logic high.
0 MTP Page 1 write
Write MTP Page 1, and MTP also needs to be
logic high.
R/W
Option
R/W
Option
Read/Write Reset Value
R/W
Option
R/W
Option
Read/Write Reset Value
R/W
0000000
R/W
Option
Read/Write
R/W
R
R
R/W
Reset Value
00
0
0
00
W
0
W
0
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
DS5028E-00 October 2016
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
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