参数资料
型号: LP3906SQXVPFP
厂商: NATIONAL SEMICONDUCTOR CORP
元件分类: 稳压器
英文描述: 2 A DUAL SWITCHING CONTROLLER, 2000 kHz SWITCHING FREQ-MAX, QCC24
封装: 5 X 4 MM, 0.80 MM HEIGHT, LLP-24
文件页数: 18/40页
文件大小: 4197K
代理商: LP3906SQXVPFP
BUCK AND LDO OUTPUT VOLTAGE ENABLE REGISTER (BKLDOEN) – 0X10
This register controls the enables for the Bucks and LDOs.
D7
D6
D5
D4
D3
D2
D1
D0
Name
LDO2EN
LDO1EN
BK2EN
BK1EN
Access
R/W
R/W
R/W
R/W
Data
Reserved
0 – Disable
1 – Enable
Reserved
0 – Disable
1 – Enable
Reserved
0 – Disable
1 – Enable
Reserved
0 – Disable
1 – Enable
Reset
0
1
0
1
0
1
BUCK AND LDO STATUS REGISTER (BKLDOSR) – 0X11
This register monitors whether the Bucks and LDOs meet the voltage output specifications.
D7
D6
D5
D4
D3
D2
D1
D0
Name
BKS_OK
LDOS_OK
LDO2_OK
LDO1_OK
BK2_OK
BK1_OK
Access
R
R
R
Data
0 – Buck 1-2
Not Valid
1 – Bucks
Valid
0 – LDO 1-2
Not Valid
1 – LDOs Valid
0 – LDO2 Not
Valid
1 – LDO2 Valid
0 – LDO1 Not
Valid
1 – LDO1 Valid
Reserve
d
0 – Buck2 Not
Valid
1 – Buck2
Valid
Reserve
d
0 – Buck1 Not
Valid
1 – Buck1
Valid
Reset
0
BUCK VOLTAGE CHANGE CONTROL REGISTER 1 (VCCR) – 0X20
This register selects and controls the output target voltages for the buck regulators.
D7-6
D5
D4
D3-2
D1
D0
Name
B2VS
B2GO
B1VS
B1GO
Access
R/W
R/W
Data
Reserved
Buck2 Target Voltage
Select
0 – B2VT1
1 – B2VT2
Buck2 Voltage Ramp
CTRL
0 – Hold
1 – Ramp to B2VS
selection
Reserved
Buck1 Target Voltage
Select
0 – B1VT1
1 – B1VT2
Buck1 Voltage Ramp
CTRL
0 – Hold
1 – Ramp to B1VS
selection
Reset
00
0
00
0
25
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LP3906
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