Table 17. Buck1Cfg Register (0x0D)
ADDRESS:
0x0D
MODE:
Read/Write
BIT
7
6
5
4
3
2
1
0
NAME
Buck1Seq[2:0]
(Read-only)
Buck1En[1:0]
Buck1PFWDis
Reserved
Buck1Seq[2:0]
Buck1 Enable Configuration (Read-Only)
000 = Disabled
001 = Reserved
010 = Enabled
at 0% of Boot/POR Process Delay Control
011 = Enabled
at 25% of Boot/POR Process Delay Control
100 = Enabled
at 50% of Boot/POR Process Delay Control
101 = Reserved
110 = Reserved
111 = Controlled by Buck1En[1:0] after 100% of Boot/POR Process Delay Control
Buck1En[1:0]
Buck1 Enable Configuration (effective only when Buck1Seq = 111)
00 = Disabled (B
uck1
OUT not actively discharged unless in
Hard Reset/ShutDown/Off
Mode)
01 = Enabled
10 = Enabled when MPC0 is high (regardless of MPC1)
11 = Enabled when MPC1 is high (regardless of MPC0)
Buck1PFWDis
Buck1 Freewheeling Behavior
0 = Freewheeling FET turn-on at inductor current zero-crossing.
1 = Freewheeling FET turn-on after the inductor current zero-crossing and LX node high.
For voltage settings > 1.5V, this setting can improve efficiency
MAX20335
PMIC with Ultra-Low I
Q
Voltage Regulators and
Battery Chargers for Small Lithium Ion Systems
www.maximintegrated.com
Maxim Integrated
│
52
