RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE
Contents
1.
2.
3.
4.
5.
6.
6.1
7.
7.1
7.1.1
7.1.2
7.1.3
7.1.4
7.1.5
7.1.6
7.2
7.2.1
7.2.2
7.2.3
7.3
7.3.1
7.4
7.4.1
7.4.2
7.4.3
7.4.4
7.4.5
7.4.6
8.
8.1
8.2
Outline....................................................................................................................................................................3
Feature ...................................................................................................................................................................3
Pin Configuration..................................................................................................................................................4
Block Diagram.......................................................................................................................................................5
Pin Description ......................................................................................................................................................6
Power On/Off Control ..........................................................................................................................................7
UVLO (Under Voltage Lock Out) ...................................................................................................................7
Functional Blocks ..................................................................................................................................................8
Regulators..........................................................................................................................................................8
Operation Mode Control............................................................................................................................ 9
LDO1 Electrical Characteristics .............................................................................................................. 10
LDO2 Electrical Characteristics (IO/LCD) ............................................................................................. 11
LDO3 Electrical Characteristics (USB)................................................................................................... 12
LDO4 Electrical Characteristics (Analog/Audio).................................................................................... 13
VREF and IREF Electrical Characteristics.............................................................................................. 13
Step-down DC/DC Converter ........................................................................................................................14
Step-down DC/DC Converter Block Diagram......................................................................................... 14
Target Electrical Characteristics .............................................................................................................. 15
Recommended External Component ....................................................................................................... 15
Thermal Shutdown Circuit ............................................................................................................................16
Thermal Shutdown Electrical Characteristics.......................................................................................... 16
CPU Interface..................................................................................................................................................17
Start and Stop Condition.......................................................................................................................... 17
Data Transmission and its Acknowledge ................................................................................................. 18
I2C-Bus Slave Address ............................................................................................................................ 18
Data Transmission Write Format ............................................................................................................. 19
Internal Register Write-in Timing............................................................................................................ 19
AC Characteristics of I2C-Bus ................................................................................................................ 20
Register ................................................................................................................................................................21
Register Map ...................................................................................................................................................21
DC/DC Converter Control Register: DCCTL (Command 000b) ...............................................................21
©2009
Rev. 1.3
Page
1
RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE
8.3
8.4
9.
9.1
9.2
9.3
10.
LDO Control Register: LDOCTL (Command 001b)...................................................................................21
Mode Control Register: MODECTL (Command 010b)..............................................................................21
Electrical Characteristics ...................................................................................................................................22
Absolute Maximum Ratings...........................................................................................................................22
Recommended Operation Conditions ...........................................................................................................22
DC Characteristics..........................................................................................................................................23
Package Information...........................................................................................................................................24
©2009
Rev. 1.3
Page
2
RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE
1. Outline
RN5T561 is the power management IC, which contains the power supply, the power supply control function and etc. in
one-chip.
2. Feature
Power Supply Function
Power supply control function
One Step-down DC/DC converter
ON/OFF programmable through I2C
PWM control
DCDC output voltage settable by external resistor
Four LDO Regulators
ON/OFF programmable through I2C (Except LDO2)
ECO-mode for LDO1, 2 and 3: Programmable through I2C
LDO1 output voltage: Selectable by trimming work
I2C-Bus (Max 400kHz)
Slave address = 32h
LDO, DC/DC converter control
UVLO
Monitoring VIN2 voltage
Package
16pin QFN package (Body size: 3 x 3 x 0.85mm, Pin pitch: 0.4mm)
Process
CMOS process
©2009
Rev. 1.3
Page
3