LP3907 Datasheet, PDF (33/44 Pages) National Semiconductor (TI) – Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C Compatible Interface

BUCK2 TARGET VOLTAGE 1 REGISTER (B2TV1) – 0X29
This register allows the user to program the output target volt-
age of Buck2.
D7-5
D4-0
Name
—
BK2_VOUT1
Access
—
R/W
Data
Reserved
Buck2 Output Voltage (V)
5’h00
Ext Ctrl
5’h01
1.0
5’h02
1.1
5’h03
1.2
5’h04
1.3
5’h05
1.4
5’h06
1.5
5’h07
1.6
5’h08
1.7
5’h09
1.8
5’h0A
1.9
5’h0B
2.0
5’h0C
2.1
5’h0D
2.2
5’h0E
2.4
5’h0F
2.5
5’h10
2.6
5’h11
2.7
5’h12
2.8
5’h13
2.9
5’h14
3.0
5’h15
3.1
5’h16
3.2
5’h17
3.3
5’h18
3.4
5’h19
3.5
5’h1A–5’h1F
3.5
Reset
000
01001
*If using Ext Ctrl, contact National Sales for support.
BUCK2 TARGET VOLTAGE 2 REGISTER (B2TV2) – 0X2A
This register allows the user to program the output target volt-
age of Buck2.
D7-5
D4-0
Name
—
BK2_VOUT2
Access
—
R/W
Data
Reserved
Buck2 Output Voltage (V)
5’h00
Ext Ctrl
5’h01
1.0
5’h02
1.1
5’h03
1.2
5’h04
1.3
5’h05
1.4
5’h06
1.5
5’h07
1.6
5’h08
1.7
5’h09
1.8
5’h0A
1.9
5’h0B
2.0
5’h0C
2.1
5’h0D
2.2
5’h0E
2.4
5’h0F
2.5
5’h10
2.6
5’h11
2.7
5’h12
2.8
5’h13
2.9
5’h14
3.0
5’h15
3.1
5’h16
3.2
5’h17
3.3
5’h18
3.4
5’h19
3.5
5’h1A–5’h1F
3.5
Reset
000
01001
33
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