Maxim Integrated MAX20335, Руководство пользователя

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Table 18. Buck1VSet Register (0x0E)
Table 19. Buck2Cfg Register (0x0F)
Changes in output voltages are digitally ramped in 25mV increments every 80µs giving a maximum slew rates of 312.5V/s.
ADDRESS: 0x0E
MODE: Read/Write
BIT 7 6 5 4 3 2 1 0
NAME Buck1LowEMI — Buck1VSet[5:0]
Buck1LowEMI
Buck1 BLX Rising/Falling Slopes Setting
0 = Normal rising/falling slopes on BLX
1 = Reduce the rising/falling slopes on BLX by a factor of three.
Buck1VSet
[5:0]
Buck1 Output Voltage Setting
Linear Scale from 0.7V to 2.275V in 25mV increments
000000 = 0.7V
000001 = 0.725V
…
111111 = 2.275V
ADDRESS: 0x0 F
MODE: Read/Write or Read-Only if Write-Protect Enabled (See Table 38)
BIT 7 6 5 4 3 2 1 0
NAME Buck2Seq [2:0] (Read-only) Buck2En [1:0] Buck2PFWDis Reserved
Buck2Seq[2:0]
Buck2 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 Buck2En [1:0] after 100% of Boot/POR Process Delay Control
Buck2En[1:0]
Buck2 Enable Configuration (effective only when Buck2Seq = 111)
00 = Disabled (Buck2 OUT not actively discharged unless in Hard Reset/ShutDown/O ff Mode)
01 = Enabled
10 = Enabled when MPC0 is high (regardless of MPC1)
11 = Enabled when MPC1 is high (regardless of MPC0)
Buck2PFWDis
Buck2 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
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