DS5028E Datasheet, PDF (3/41 Pages) Richtek Technology Corporation – Integrated PMIC with 4-Channel Synchronous Buck Converters, 8 LDOs, and MTP Non-Volatile Memory for Industrial Applications

RT5028E
Pin No.
Pin Name
16
SDA
17
ENL7
18
ENL8
19
IRQ
20
RESET
21, 34, 56, 57
(Exposed Pad)
AGND
22
PWRON
23
REBOOT
24
MTP
25
MASK_GPIO
26
27
28
29
30
31
32
33
35, 36
37, 38
39
40
41, 42
43, 44
45, 46
47, 48
49
50
51
52
53
54
55
PWRHOLD
SADDR
ENB4
VOUTB4S
ENB3
LXB4
VINB4
VOUTB3S
LXB3
VINB3
VOUTB2S
ENB2
LXB2
VINB2
VINB1
LXB1
ENB1
VOUTB1S
VDDP
VIN
ENL1
ENL2
ENL3
Pin Function
Data input for I²C. Open-drain output, connect a 10k pull-up resistor.
Enable control input for LDO7. Connect a 100k pull-low resistor.
Enable control input for LDO8. Connect a 100k pull-low resistor.
Open-drain IRQ output node.
Reset output.
Analog ground. The exposed pad must be soldered to a large PCB and
connected to AGND for maximum power dissipation.
Manual power on. Connect a 100k pull-up resistor.
System power reboot. Connect a 100k pull-low resistor.
MTP write protection. Connect a 100k pull-low resistor, logic low is inhibited
and logic high is permit to write.
Select I²C or use EN pin for Bucks and LDOs. Connect a 100k pull-low resistor.
As MASK_GPIO is high, ignore all EN pins.
As MASK_GPIO is low, EN pins and I²C both can control. EN pins priority is
higher than I²C.
Power hold input. Connect a 100k pull-low resistor.
I²C slave address. Connect a 100k pull-low resistor.
Enable control input for Buck4. Connect a 100k pull-low resistor.
Output voltage regulation node for Buck4.
Enable control input for Buck3. Connect a 100k pull-low resistor.
Internal switch node to output inductor connection for Buck4.
Input power for Buck4.
Output voltage regulation node for Buck3.
Internal switch node to output inductor connection for Buck3.
Input power for Buck3.
Output voltage regulation node for Buck2.
Enable control input for Buck2. Connect a 100k pull-low resistor.
Internal switch node to output inductor connection for Buck2.
Input power for Buck2.
Input power for Buck1.
Internal switch node to output inductor connection for Buck1.
Enable control input for Buck1. Connect a 100k pull-low resistor.
Output voltage regulation node for Buck1
Internal bias regulator voltage. External load on this pin is not allowed.
Input power for analog base.
Enable control input for LDO1. Connect a 100k pull-low resistor.
Enable control input for LDO2. Connect a 100k pull-low resistor.
Enable control input for LDO3. Connect a 100k pull-low resistor.
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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