LTC3576EUFE-1-PBF LINER [Linear Technology], LTC3576EUFE-1-PBF Datasheet - Page 29

• Manufacturer Part Number: LTC3576EUFE-1-PBF
• Description: Switching Power Manager with USB On-the-Go + Triple Step-Down DC/DCs
• Manufacturer: LINER [Linear Technology]

Input Data
Table 3 illustrates the four data bytes that may be written
to the LTC3576/LTC3576-1.
The fi rst byte at sub-address 0 controls the servo volt-
age for switching regulators 1 and 2. The second byte at
OPERATION
Table 3. I
*The A7-A0 and B7-B4 bits default to 1 and all other bits default to 0 when the chip is powered and DV
Reset Value
Reset Value
2
C Serial Port Mapping*
(See Table 5)
Switching Regulator 1 Voltage
Regulator 1
A7
C7
0
1
Switching
Modes
(See Table 4)
A6
C6
0
1
(See Table 5)
A5
C5
Regulator 2
0
1
Switching
Modes
Table 4. Switching Regulator Servo Voltage
A7
A3
B7
A4
C4
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
1
A6
A2
B6
(See Table 5)
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Switching Regulator 2 Voltage
A3
C3
Regulator 3
0
1
Switching
Modes
A5
A1
B5
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
(See Table 4)
A2
C2
0
1
A4
A0
B4
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Input Current
(See Table 6)
A1
C1
0
1
Limit
Switching Regulator 1 Servo Voltage
Switching Regulator 2 Servo Voltage
Switching Regulator 3 Servo Voltage
A0
C0
0
1
sub-address 1 controls the servo voltage of switching
regulator 3 and the enable signals for all three switching
regulators, as well as the enable signal for the PowerPath
switching regulator to power up V
The servo voltages are decoded in Table 4. The default
servo voltage is 0.8V.
Switching Regulator 3 Voltage
B7
D7
0
0
0.425
0.450
0.475
0.500
0.525
0.550
0.575
0.600
0.625
0.650
0.675
0.700
0.725
0.750
0.775
0.800
(See Table 4)
B6
D6
0
0
LTC3576/LTC3576-1
CC
B5
D5
0
= 0.
0
D4
B4
0
0
D3
B3
0
0
BUS
Unused
for USB on-the-go.
B2
D2
0
0
B1
D1
0
0
29
B0
D0
0
0
3576f