LP3907_14 Datasheet, PDF (36/57 Pages) Texas Instruments – Dual High-Current Step-Down DC/DC and Dual Linear Regulator with I2C-Compatible Interface

LP3907
SNVS511N – JUNE 2007 – REVISED AUGUST 2011
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BUCK1 RAMP CONTROL REGISTER (B1RC) - 0x25
This register allows the user to program the rate of change between the target voltages of Buck1.
Name
Access
Data
Reset
D7
----
----
Reserved
D6-4
----
----
Reserved
0
010
Data Code
4h'0
4h'1
4h'2
4h'3
4h'4
4h'5
4h'6
4h'7
4h'8
4h'9
4h'A
4h'B - 4h'F
D3-0
B1RS
R/W
1000
Ramp Rate mV/us
Instant
1
2
3
4
5
6
7
8
9
10
10
BUCK2 TARGET VOLTAGE 1 REGISTER (B2TV1) – 0X29
This register allows the user to program the output target voltage of Buck2.
Name
Access
Data
D7-5
—
—
Reserved
5’h00
5’h01
5’h02
5’h03
5’h04
5’h05
5’h06
5’h07
5’h08
5’h09
5’h0A
5’h0B
5’h0C
5’h0D
5’h0E
5’h0F
5’h10
5’h11
5’h12
5’h13
D4-0
BK2_VOUT1
R/W
Buck2 Output Voltage (V)
Ext Ctrl
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.4
2.5
2.6
2.7
2.8
2.9
36
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