AS3608 DB,AS3608 DB pdf中文资料,AS3608 DB引脚图,AS3608 DB电路-Datasheet-电子工程世界

Datasheet> 器件分类 > 开发板/开发套件/开发工具> AS3608 DB

文档预览

AS3608 DB: 产品描述board demo/usb box for as3608; 产品类别开发板/开发套件/开发工具; 文件大小2MB，共67页; 制造商AMS; 官网地址https://ams.com/zh; 标准

下载文档选型对比全文预览

AS3608 DB概述

board demo/usb box for as3608

文档预览

下载PDF文档

全文
预览

Data Sheet

AS3608

System PMU with HV Back Light Driver

1 General Description

The AS3608 is an ultra compact System PMU with integrated battery

charger and HV back light driver.

The device offers advanced power management functions. All

necessary ICs and peripherals in a battery powered mobile device

are supplied by the AS3608. It features 3 DCDC converters as well

as 5 low noise LDOs. The different regulated supply voltages are

programmable via the serial control interface.

The step-up converter for the backlight can operate up to 30V. Both

constant voltage (OLED supply) as well as constant current (white

LED backlight) operations with 2 current sinks are possible. An

internal voltage protection is limiting the output voltage in the case of

external component failures.

AS3608 also contains a Li-Ion battery charger with constant current

and constant voltage. The maximum charging current is 1A. An

integrated battery switch and an optional external switch are

separating the battery during charging or whenever an external

power supply is present. With this switch it is also possible to operate

with no or deeply discharged batteries. A programmable current limit

can be used to control the maximum current used from a USB

supply.

The single supply voltage may vary from 2.7V to 5.5V.

HV Backlight Driver

Step up for 30V backlight with internal transistor

Voltage control mode and over-voltage protection

2 programmable current sink (max. 38mA)

Max. 20mA@50V (with ext. transistor) or 500mA@5V

Possible external PWM dimming input

Battery Charger

Prog. trickle charging (25-265mA)

Prog. constant current charging (94-1060mA)

Prog. constant voltage charging (3.9V-4.25V)

Charger time-out and temperature supervision

Selectable current limitation for USB mode

Integrated battery switch & ideal diode

External battery switch control output

General

Battery and Temperature Supervisor

4 General Purpose IOs

10bit general purpose ADC input

PWM dimming input or wake-up input

Status output for: charger, low battery, power good and power-

up key

2 Key Features

Power Management

Voltage Generation

3 DCDC step down regulators

DVM (0.61V-3.3V, 1A@1.2V, 900mA@1.8V 800mA@2.5V)

50µA quiescent current

Selectable switching frequency (2 or 1MHz)

2A@1.2V with combined DCDC 2 & 3

OTP Programmable BOOT Sequence

Programmable regulator default voltages

Programmable start-up sequence

Applicable for LDO 1-4 and DCDC 1-3

Control Interface

I2C control lines, including watchdog

Power-Up input

Interrupt output

Bidirectional reset, with selectable delay

Low power standby mode, 180µA with LDO5 on

1 LDO low noise 2.7V (2.3-3.5V), 100mA

3 or 4 LDOs low noise

- 1.2-3.5V; 160/270mA

- 30µA quiescent current (low power mode)

Power supply supervision (LDO5)

4sec and 8sec emergency shut-down

Hibernation function

Power-On Reset Circuit

Packaging

QFN36 6x6mm, 0.5mm pitch

3 Application

The devices are ideal for Portable Media Players and Portable

Navigation Devices, e-Books, Tablet PCs, etc

www.austriamicrosystems.com

Revision 1.03

1 - 67

AS3608 2v2

Data Sheet - C o n t e n t s

Contents

1 General Description ..................................................................................................................................................................

2 Key Features.............................................................................................................................................................................

3 Application ................................................................................................................................................................................

4 Pin Assignments .......................................................................................................................................................................

4.1 Pin Descriptions....................................................................................................................................................................................

5 Absolute Maximum Ratings ......................................................................................................................................................

6 Electrical Characteristics...........................................................................................................................................................

7 Typical Operating Characteristics ...........................................................................................................................................

8 Detailed Description - Power Management Functions............................................................................................................

8.1 Low Drop Out Regulators ...................................................................................................................................................................

8.1.1 LDO5 ......................................................................................................................................................................................... 11

8.1.2 LDO 1, LDO2, LDO3 & LDO4.................................................................................................................................................... 12

8.1.3 Parameter .................................................................................................................................................................................. 12

8.2 DCDC Step-Down Converter..............................................................................................................................................................

8.2.1 Functional Description ............................................................................................................................................................... 15

8.2.2 Parameter .................................................................................................................................................................................. 16

8.3 30V Step-Up DCDC Converter...........................................................................................................................................................

8.3.1

8.3.2

8.3.3

8.3.4

8.3.5

8.4.1

8.4.2

8.4.3

8.4.4

8.4.5

8.4.6

8.4.7

Voltage Feedback and OV Protection .......................................................................................................................................

Voltage Feedback......................................................................................................................................................................

DLS & Dimming .........................................................................................................................................................................

Current Sinks .............................................................................................................................................................................

Parameter ..................................................................................................................................................................................

8.4 Charger...............................................................................................................................................................................................

Soft Charge/Trickle Charge ....................................................................................................................................................... 22

End of Charge Detection ........................................................................................................................................................... 22

VSUPSW and Temperature Supervision................................................................................................................................... 22

Battery Temperature Supervision .............................................................................................................................................. 22

No Battery Detection.................................................................................................................................................................. 22

Charger Modes .......................................................................................................................................................................... 23

Parameter .................................................................................................................................................................................. 23

9 Detailed Description - SYSTEM Functions

9.1 SYSTEM

............................................................................................................................. 25

............................................................................................................................................................................................ 25

9.1.1 Power Up/Down Conditions ....................................................................................................................................................... 25

9.1.2 Start-up Sequence ..................................................................................................................................................................... 25

9.2 Hibernation

9.3 Supervisor

9.3.1

9.3.2

9.3.3

9.3.4

......................................................................................................................................................................................... 26

.......................................................................................................................................................................................... 26

VSUP Supervision ..................................................................................................................................................................... 26

VDD27 Supervision ................................................................................................................................................................... 26

Junction Temperature Supervision ............................................................................................................................................ 26

Power Rail Monitoring ................................................................................................................................................................ 26

........................................................................................................................................................................... 27

9.4 Interrupt Generation

9.4.1 IRQ Source Interpretation .......................................................................................................................................................... 27

9.4.2 Interrupt Sources ....................................................................................................................................................................... 27

9.5 10-Bit ADC

......................................................................................................................................................................................... 28

9.5.1 Input Sources ............................................................................................................................................................................. 28

www.austriamicrosystems.com

Revision 1.03

3 - 67

AS3608 2v2

Data Sheet - C o n t e n t s

9.5.2 Parameter .................................................................................................................................................................................. 28

9.6 GPIO Pins

.......................................................................................................................................................................................... 29

........................................................................................................................................................... 30

9.7 2-Wire-Serial Control Interface

9.7.1 Protocol ...................................................................................................................................................................................... 30

9.7.2 Parameter .................................................................................................................................................................................. 33

10 Register Definition

11.1 Pad Cells

................................................................................................................................................................ 34

......................................................................................................................................................... 61

.................................................................................................................................................................... 62

11 Application Information

.......................................................................................................................................................................................... 61

11.2 Application Schematics

12 Package Drawings and Markings

13 Ordering Information

......................................................................................................................................... 63

............................................................................................................................................................. 66

www.austriamicrosystems.com

Revision 1.03

4 - 67

AS3608 DB相似产品对比

	AS3608 DB	AS3608 EVAL BOARD
描述	board demo/usb box for as3608	BOARD DEMO/USB BOX FOR AS3608

AS3608 DB

AS3608 DB概述

文档预览

AS3608 DB相似产品对比

推荐资源