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APW8857 Datasheet Preview

APW8857 Datasheet

8 Outputs Voltage Regulator and 1 Power Switch Power Management

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APW8857
High Current, High Frequency 8 Outputs Voltage Regulator and 1 Power Switch Power
Management IC for High Performance Tablet and Ultra Notebook Applications
1.General Description
The APW8857 is a Power Management IC (PMIC) de-
signed to provide 8 Voltage regulators and 1 Power Switch
for AMDs Raven Ridge APU with ability to communicate
via an I2C interface. The IC operates from a wide input
voltage of 6V to 20V. There are 5 Switching Buck regula-
tors 3 low power LDOs and 1 Power Switch that are all
controlled and sequenced via the serial interface.
The Buck PWM regulators consists of 3 switching con-
troller driving external power stage such as APW8707/
APW8703/APW8706 which is capable of supplying up to
13A, 8A and 6A supply, 2 single phase switching regula-
tors supplying up to 3A and 1A supply. The IC is equipped
with all the standard protection features such as over
current, over voltage and internal under voltage lock out
protection. The serial interface is an I2C communication
interface which allows supply sequencing as well as
controlled supply ramp up and ramp down of all supplies
except for the always on 1.5V LDO supplying to RTC load.
The IC is offered in TQFN5x5-40 package.
2.Applications
High Performance Tablet PCs
Ultra Notebook PCs
Netbook PCs
High Performance Digital Signage
Medical Devices
Smart phones
3.Features
Voltage Rail
Provide 3 Buck PWM Controllers with High
Accuracy over Temperature
-VR1 provides 3.3V, 8A peak output current.
-VR2 provides 5V, 8A peak output current.
-VR3 provides 0.8V, 4A peak output current.
Provide 2 Buck PWM Converters with High
Accuracy over Temperature
-VR4 provides 1.8V, 3A peak output current.
-VR6 provides 0.8V, 1A peak output current
Provide 3 LDO and 1 Power Switch Outputs with
High Accuracy over Temperature
-VR5 combines a 1.2/1.5/1.8V, 0.25A LDO output with
a power switch.
-VR7 provides a 3.3V LDO output.
-VR8 provides a low quiescent LDO output for RTC.
-One Power Switch with 2.5A output current.
-One 5V LDO output.
Built in Current limit, Over Voltage protection and
Over temperature protection
Serial Interface
I2C communication Interface for SoC Access
Support Bit Rate 0.4MBit/s, 1MBit/s and 3.4MBit/s
Power Sequence Control by GPIO_G3, EN_S0 and
EN_S5 Pins.
Built-in Thermal Diode and I2C Reading Function
for Temperature Sensing.
POK Signal for VR power state.
Implement One Time Programmable (OTP) Function
5x5 TQFN-40 Package
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
1
Rev. A.4 - Jul., 2019
www.anpec.com.tw




ANPEC

APW8857 Datasheet Preview

APW8857 Datasheet

8 Outputs Voltage Regulator and 1 Power Switch Power Management

No Preview Available !

APW8857
1. General Desctiption....................................................................................1
2. Applications................................................................................................1
3. Key Features..............................................................................................1
4. Ordering and Marking Information..............................................................3
5. Pin Configuration........................................................................................3
6. Absolute Maximum Ratings........................................................................4
7. Thermal Chacterestics................................................................................4
8. Recommended Operation Conditions.........................................................4
9. Block Diagram............................................................................................5
10. Typical Application Circuit
10.1 Typical Application Circuit......................................................................6
10.2 Bill of Materials......................................................................................7
11. Pin Description...........................................................................................9
12. Power Sequence
12.1 G3s to S5 to S0...................................................................................11
12.2 G3s to G3 , and then S5 ,S0.................................................................12
12.3 System Boos to S5...............................................................................13
13. Electrical Characteristics
13.1 Regulator Table....................................................................................14
13.2 VR1&VR7 Electrical Characteristics......................................................16
13.3 VR2 Electrical Characteristics...............................................................17
13.4 VR3 Electrical Characteristics...............................................................19
13.5 VR4 Electrical Characteristics...............................................................20
13.6 VR5 Electrical Characteristics...............................................................21
13.7 VR6 Electrical Characteristics...............................................................22
13.8 VR8 Electrical Characteristics...............................................................23
13.9 SW_VDD1V8 Switch............................................................................23
13.10 VSYS&POK&EN Electrical Characteristics...........................................24
13.11 I2C Electrical Characteristics...............................................................25
14. Register Description
14.1 Register Map.......................................................................................26
14.2 VR1 Register Table...............................................................................27
14.3 VR2 Register Table...............................................................................28
14.4 VR3 Register Table...............................................................................29
14.5 VR4 Register Table...............................................................................30
14.6 VR5 Register Table...............................................................................31
14.7 VR6 Register Table...............................................................................32
14.8 SW_VDD1V8 Register Table.................................................................33
14.9 Thermal Report Register Table...............................................................33
14.10 POK Delay Time Register Table...........................................................34
14.11 Version ID Register............................................................................34
15. Function Description
15.1 VR Function Description.......................................................................35
15.2 I2C Function Description......................................................................36
16. Application Information................................................................................40
17. Package Information....................................................................................42
Copyright © ANPEC Electronics Corp.
2
Rev. A.4 - Jul., 2019
www.anpec.com.tw



Part Number APW8857
Description 8 Outputs Voltage Regulator and 1 Power Switch Power Management
Maker ANPEC
Total Page 3 Pages
PDF Download

APW8857 Datasheet PDF





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