LTC3576EUFE#PBF Linear Technology, LTC3576EUFE#PBF Datasheet - Page 29

• Manufacturer Part Number: LTC3576EUFE#PBF
• Description: IC POWER MANAGER W/USB OTG 38QFN
• Manufacturer: Linear Technology

Specifications of LTC3576EUFE#PBF

• Applications: Handheld/Mobile Devices
• Voltage - Supply: 4.35 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 38-QFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Supply: -

OPERATION
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
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
1
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
1
LTC3576/LTC3576-1
CC
B5
D5
0
= 0.
1
D4
B4
0
1
D3
B3
0
0
BUS
Unused
for USB on-the-go.
B2
D2
0
0
B1
D1
0
0
29
B0
D0
0
3576fb
0