ADP5020CP-EVALZ Analog Devices Inc, ADP5020CP-EVALZ Datasheet - Page 19

• Manufacturer Part Number: ADP5020CP-EVALZ
• Description: EB PMU For Digital Imaging Module
• Manufacturer: Analog Devices Inc

Specifications of ADP5020CP-EVALZ

• Design Resources: Powering AD9272 with ADP5020 Switching Regulator PMU for Increased Efficiency (CN0135)
• Main Purpose: DC/DC, Step Down with LDO
• Outputs And Type: 3, Non-Isolated
• Voltage - Output: 3.3V, 1.2V, 1.8V
• Current - Output: 600mA, 250mA, 150mA
• Voltage - Input: 2.4 ~ 5.5 V
• Regulator Topology: Buck
• Frequency - Switching: 3MHz
• Board Type: Fully Populated
• Utilized Ic / Part: ADP5020
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

POWER-ON SEQUENCE USING THE I
When the EN pin is low, the regulator sequence is controlled by
the application processor sending I
activation. When Bit 4 (EN_ALL) in the REG_CONTROL_
STATUS register (Address 0x03) is set to 1, the regulator sequence
is as follows:
INTERNAL
XSHTDN
I
BUCK 1
BUCK 2
2
XSHTDN
C BUS
I
BUCK 1
BUCK 2
2
C BUS
LDO
VDDx
EN
POR
POR
LDO
EN
BK1_EN
V
2
UVLOR
= 1
C commands to control the
xxx_XSHTDN BITS
I
2
C SET/CLEAR
2
t
C INTERFACE
REG1
Figure 26. Individual Activation Through I
Figure 25. Activation and Power Failure Conditions
LD0_EN
= 1
Rev. 0 | Page 19 of 28
t
BK2_EN
REG2
= 1
1.
2.
3.
This sequence can be factory programmed through fuses.
Unused regulators can also be fuse programmed to be turned
off during sequencing.
t
REG3
<50µs
FORCE_XS
Buck 1
LDO
Buck 2
2
C Commands
= 1
t
XSHTDN
FORCE_XS
= 0
BK2_EN = 0
BK1_EN,
LDO_EN,
V
UVLOF
ADP5020