Datasheet RN5T561 Datasheet (RICOH)

Power Management System Device

RN5T561-0000

Development Specifications

Rev. 1.3

2009.05.19

RICOH COMPANY, LTD.

Electronic Devices Company

This specification is subject to change without notice.

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

Contents

1.

Outline....................................................................................................................................................................3

2. Feature ...................................................................................................................................................................3

3. Pin Configuration..................................................................................................................................................4

4. Block Diagram.......................................................................................................................................................5

5. Pin Description ......................................................................................................................................................6

6. Power On/Off Control ..........................................................................................................................................7

6.1 UVLO (Under Voltage Lock Out) ...................................................................................................................7

7. Functional Blocks.................................................................................................................................................. 8

7.1 Regulators..........................................................................................................................................................8

7.1.1 Operation Mode Control............................................................................................................................ 9

7.1.2 LDO1 Electrical Characteristics .............................................................................................................. 10

7.1.3 LDO2 Electrical Characteristics (IO/LCD) ............................................................................................. 11

7.1.4 LDO3 Electrical Characteristics (USB)................................................................................................... 12

7.1.5 LDO4 Electrical Characteristics (Analog/Audio).................................................................................... 13

7.1.6 VREF and IREF Electrical Characteristics.............................................................................................. 13

7.2 Step-down DC/DC Converter ........................................................................................................................14

7.2.1 Step-down DC/DC Converter Block Diagram.........................................................................................14

7.2.2 Target Electrical Characteristics .............................................................................................................. 15

7.2.3 Recommended External Component ....................................................................................................... 15

7.3 Thermal Shutdown Circuit ............................................................................................................................16

7.3.1 Thermal Shutdown Electrical Characteristics.......................................................................................... 16

7.4 CPU Interface..................................................................................................................................................17

7.4.1 Start and Stop Condition.......................................................................................................................... 17

7.4.2 Data Transmission and its Acknowledge ................................................................................................. 18

7.4.3 I2C-Bus Slave Address............................................................................................................................ 18

7.4.4 Data Transmission Write Format ............................................................................................................. 19

7.4.5 Internal Register Write-in Timing............................................................................................................ 19

7.4.6 AC Characteristics of I2C-Bus ................................................................................................................ 20

8. Register ................................................................................................................................................................21

8.1 Register Map ...................................................................................................................................................21

8.2 DC/DC Converter Control Register: DCCTL (Command 000b) ...............................................................21

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

8.3 LDO Control Register: LDOCTL (Command 001b)...................................................................................21

8.4 Mode Control Register: MODECTL (Command 010b)..............................................................................21

9. Electrical Characteristics ...................................................................................................................................22

9.1 Absolute Maximum Ratings...........................................................................................................................22

9.2 Recommended Operation Conditions ...........................................................................................................22

9.3 DC Characteristics..........................................................................................................................................23

10. Package Information...........................................................................................................................................24

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

z Power Supply Function

9 Power supply control function

z One Step-down DC/DC converter

9 ON/OFF programmable through I2C 9 PWM control 9 DCDC output voltage settable by external resistor

z Four LDO Regulators

9 ON/OFF programmable through I2C (Except LDO2) 9 ECO-mode for LDO1, 2 and 3: Programmable through I2C 9 LDO1 output voltage: Selectable by trimming work

z I2C-Bus (Max 400kHz)

9 Slave address = 32h 9 LDO, DC/DC converter control

z UVLO

9 Monitoring VIN2 voltage

z Package

9 16pin QFN package (Body size: 3 x 3 x 0.85mm, Pin pitch: 0.4mm)

z Process

9 CMOS process

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

3. Pin Configuration

Fig 3-1 Pin Configuration

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

4. Block Diagram

Fig 4-1 Block Diagram

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

5. Pin Description

NO NAME I/O FUNCTION NOTES

1 FB I Output voltage feedback of DC/DC converter

2 VIN1 PWR Power supply for DC/DC converter

3 LX O Switch output of DC/DC converter circuit

4 PGND GND Power GND for DC/DC converter

5 VEN I Power-on signal Schmitt /pull-down

6 SCL I Clock input for I2C-Bus Schmitt

7 SDA I/O Data input/output for I2C-Bus Schmitt /Nch Open-drain

8 LDOUT2 O Output of LDO2

9 VIN2 PWR Power supply for VREF, LDO2 and 4

10 LDOUT4 O Output of LDO4

11 GND GND GND

12 VREF O Capacitor connection for reference Do not load this pin.

13 VIN4 PWR Power supply for LDO3

14 LDOUT3 O Output of LDO3

15 LDOUT1 O Output of LDO1

16 VIN3 PWR Power supply for LDO1

Table 5-1 Pin Description

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

6. Power On/Off Control

Fig 6-1 Power On/Off Timing

RN5T561 can be asserted power on by pushing VEN pin high but UVLO signal should be high by detecting the battery

voltage over 3.1V. Step-down DC/DC converter turns on 250us after VEN pin goes high and then LDO1and 2 turn on.

Then LDO3 and 4 are turned on with 120us of time interval.

When VEN goes low, all LDOs, DC/DC converter and logics are powered off and all register will be reset.

Note*: Wait more than 1ms to repower on by VEN= “H”.

6.1 UVLO (Under Voltage Lock Out)

Operating Conditions (unless otherwise specified) Ta = 25℃

Symbol Parameter Condition Min Typ Max Units

V

Under voltage lock out threshold VCCVIN rising 2.25 V

Release

V

Under voltage lock out threshold VCCVIN falling 2.05 2.20 2.35 V

Detect

V

UVLO Hysteresis - 50 mV

HYS

Table 6-1 UVLO

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

7. Functional Blocks

7.1 Regulators

RN5T561 has 4 Low Drop Output regulators, LDO1 to LDO4. Power on/off of each regulator and ECO-mode of LDO1,

2 and 3 are programmable by setting data through I2C. LDO1 output voltage is settable by trimming work.

For the type of the bypass capacitor, it must be the ceramic type, not tantalum type, since the optimization design is

based on the ceramic type for the phase compensation.

LDO1

Initial

Va l ue

Programmable

Output Voltage

Initial State

*1

ECO-mode Yes *2 Yes *2 Yes *2 No

On/Off Control I2C-Bus - I2C-Bus I2C-Bus

Auto-discharge No No No No

Note*1: Initial State is when VEN pin is high.

Note*2: LDO1, 2 and 3 have ECO-mode. But they can turn on at Normal-mode only not at ECO-mode.

1.2V/1.8V

1.2V/1.8V Fix Fix Fix

2.8V 3.3V 3.0V

ON ON ON ON

LDO2

(IO/LCD)

Table 7-1 Regulator Table

LDO3

(USB)

LDO4

(Audio/Analog)

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

7.1.1 Operation Mode Control

RN5T561 provides ECO-mode in LDO1, 2 and 3 for low power consumption. When peripheral Ics are in sleep state or

low power consumption state, ECO-mode allows RN5T561 to operate at low power consumption. ECO-mode is

programmable by register setting through I2C.

ECO-mode of LDO1, 2 and 3 are individually programmable by setting LDOiECO (I = 1,2,3) bit in MODECTL register.

LDO1, 2 and 3 go into ECO-mode when LDOiECO=“1” and Normal-mode when LDOiECO=“0”.

Transition delay time between ECO-mode and Normal-mode is 500us.

It is not recommendable to change LDO operation mode in 500us after transition. (If writing is performed in 500us after

transition, noise may appear from the output.)

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

7.1.2 LDO1 Electrical Characteristics

(1) Normal Mode

Operating Conditions (unless otherwise specified) VIN = 3.6V, C

= 1.0μF, Ta = 25℃

REFO

Symbol Parameter Condition Min Typ Max Units

VOUT1 Output Voltage

1.6V≦VIN≦2.0V

IOUT1=90mA

3.3V≦VIN≦4.5V

IOUT1=90mA

-3%

1.2 +3% V

1.8

IOUT1 Output Current - 90 150 mA

ISHORT1 Short Current VOUT1=0V 150 mA

VDRP1 Drop-out Voltage IOUT1=90mA 200 mV

1.6V≦VIN≦2.0V

ΔVOUT1

ΔVIN

Line Regulation

IOUT1=90mA

3.3V≦VIN≦4.5V

2.4 mV

IOUT1=90mA

ΔVOUT1

ΔIOUT1

ΔVOUT1

ΔT

a

Load Regulation 50μA＜IOUT1＜150mA 25 mV

Output Voltage

Temperature Coefficient

-30℃≦T

≦85℃ +100 ppm/℃

a

RR1 Ripple Rejection f=1kHz, IOUT1=90mA 65 dB

EN1

Output Noise

(RMS)

BW=100Hz-100kHz, IOUT1=90mA 110

μVrm s

BC1 Bypass Capacitor 0μA＜IOUT1＜150mA 2.2 μF

ISS1 Supply Current

No-load (Normal-mode) 85

μA

OFF 1

(2) ECO Mode

Operating Conditions (unless otherwise specified) VIN = 3.6V, C

= 1.0μF, Ta = 25℃

REFO

Symbol Parameter Condition Min Typ Max Units

VOUT1 Output Voltage

1.6V≦VIN≦2.0V

IOUT1=5mA

3.3V≦VIN≦4.5V

IOUT1=5mA

-3%

1.2 +3% V

1.8

IOUT1 Output Current - 5 10 mA

ISS1 Supply Current ECO-mode 3 μA

Table 7-2 LDO1 Electrical Characteristics

Note*: Bypass capacitor: 2.2μF in mounted state.

For optimized phase compensation, the bypass capacitor must be the ceramic type.

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

7.1.3 LDO2 Electrical Characteristics (IO/LCD)

(1) Normal Mode

Operating Conditions (unless otherwise specified) VIN = 3.6V, C

= 1μF, Ta = 25℃

REFO

Symbol Parameter Condition Min Typ Max Units

VOUT2 Output Voltage

3.3V≦VIN≦4.5V

IOUT2=60mA

-3% 2.8 +3% V

IOUT2 Output Current - 60 100 mA

ISHORT2 Short Current VOUT2=0V 100 mA

VDRP2 Drop-out Voltage IOUT2=60mA 150 mV

ΔVOUT2

ΔVIN

ΔVOUT2

ΔIOUT2

ΔVOUT2

ΔT

a

Line Regulation

Load Regulation 50μA＜IOUT2＜100mA 25 mV

Output Voltage

Temperature

Coefficient

3.3V≦VIN≦4.5V

IOUT2=60mA

-30℃≦T

≦85℃ +100 ppm/℃

a

2.4 mV

RR2 Ripple Rejection f=1kHz, IOUT2=60mA 60 dB

EN2

Output Noise

(RMS)

BW=100Hz-100kHz,

IOUT2=60mA

120

μVrm s

BC2 Bypass Capacitor 0μA＜IOUT2＜100mA 1.0 μF

ISS2 Supply Current

No-load 85

μA

OFF 1

(2) ECO Mode

Operating Conditions (unless otherwise specified) VIN = 3.6V, C

= 1μF, Ta = 25℃

REFO

Symbol Parameter Condition Min Typ Max Units

VOUT2 Output Voltage

3.3V≦VIN≦4.5V

IOUT2=5mA

-3% 2.8 +3% V

IOUT2 Output Current - 5 10 mA

ISS2 Supply Current ECO-mode 3 μA

Table 7-3 LDO2 Electrical Characteristics

Note*: Bypass capacitor: 1.0μF in mounted state.

For optimized phase compensation, the bypass capacitor must be the ceramic type.

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

7.1.4 LDO3 Electrical Characteristics (USB)

(1) Normal Mode

Operating Conditions (unless otherwise specified) VIN = 3.6V, C

= 1μF, Ta = 25℃

REFO

Symbol Parameter Condition Min Typ Max Units

VOUT3 Output Voltage

3.6V≦VIN≦5.5V

IOUT3=60mA

-3% 3.3 +3% V

IOUT3 Output Current - 60 100 mA

ISHORT3 Short Current VOUT3=0V 100 mA

VDRP3 Drop-out Voltage IOUT3=60mA 100 mV

ΔVOUT3

ΔVIN

ΔVOUT3

ΔIOUT

ΔVOUT3

ΔT

a

Line Regulation

Load Regulation 50μA＜IOUT3＜100mA 25 mV

3

Output Voltage

Temperature

Coefficient

3.6V≦VIN≦5.5V

IOUT3=60mA

-30℃≦T

≦85℃ +100 ppm/℃

a

2.4 mV

RR3 Ripple Rejection f=1kHz, IOUT3=60mA 60 dB

EN3

Output Noise

(RMS)

BW=100Hz-100kHz,

IOUT3=60mA

140

μVrm s

BC3 Bypass Capacitor 0μA＜IOUT3＜100mA 1.0 μF

ISS3 Supply Current

No-load 85

μA

OFF 1

Table 7-4 LDO3 Electrical Characteristics

(2) ECO Mode

Operating Conditions (unless otherwise specified) VIN = 3.6V, C

= 1μF, Ta = 25℃

REFO

Symbol Parameter Condition Min Typ Max Units

VOUT3 Output Voltage

3.6V≦VIN≦5.5V

IOUT3=5mA

-3% 3.3 +3% V

IOUT3 Output Current - 5 10 mA

ISS3 Supply Current ECO-mode 3 μA

Table 7-5 LDO3 Electrical Characteristics

Note*: Bypass capacitor: 1.0μF in mounted state.

For optimized phase compensation, the bypass capacitor must be the ceramic type.

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

7.1.5 LDO4 Electrical Characteristics (Analog/Audio)

Operating Conditions (unless otherwise specified) VIN = 3.6V, C

= 1μF, Ta = 25℃

REFO

Symbol Parameter Condition Min Typ Max Units

VOUT4 Output Voltage

3.3V≦VIN≦4.5V

IOUT4=40mA

-3% 3.0 +3% V

IOUT4 Output Current - 40 60 mA

ISHORT4 Short Current VOUT4=0V 100 mA

VDRP4 Drop-out Voltage IOUT4=40mA 100 mV

ΔVOUT4

ΔVIN

ΔVOUT4

ΔIOUT

ΔVOUT4

ΔT

a

Line Regulation

Load Regulation 50μA＜IOUT4＜60mA 25 mV

4

Output Voltage

Temperature

Coefficient

3.3V≦VIN≦4.5V

IOUT4=40mA

-30℃≦T

≦85℃ +100 ppm/℃

a

2.4 mV

RR4 Ripple Rejection f=1kHz, IOUT4=40mA 70 dB

EN4

Output Noise

(RMS)

BW=100Hz-100kHz

IOUT4=40mA

130

μVrm s

BC4 Bypass Capacitor 0μA＜IOUT4＜60mA 1.0 μF

ISS4 Supply Current

No-load 100

μA

OFF 1

Table 7-6 LDO4 Electrical Characteristics

Note*: Bypass capacitor: 1.0μF in mounted state.

For optimized phase compensation, the bypass capacitor must be the ceramic type.

7.1.6 VREF and IREF Electrical Characteristics

Operating Conditions (unless otherwise specified) VIN= 3.6V, C

= 1μF, Ta = 25℃

REFO

Symbol Parameter Condition Min Typ Max Units

C

Bypass Capacitor - 1.0 μF

REFO

VOUT Output Voltage 3.3V≦VIN≦4.5V 2.0 V

ISS Supply Current

No-load 20

OFF 1

μA

Table 7-7 VREF and IREF Electrical Characteristics

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

7.2 Step-down DC/DC Converter

DCDC converter turns on by VEN=“H” (DC/DC enable signal). During standby mode, LX pin is high impedance.

When DCDC becomes active, the internal Soft-start circuit is enabled and output voltage starts boosting. RN5T561

compares internal reference voltage (typ.0.6V) and FB voltage. If FB voltage is below the reference voltage, it turns on

high-side switch by enabling one-shot circuit.

The high-side switch remains on for minimum on time and until FB voltage rises over the reference voltage or inductor

current exceeds limit current. Once the high-side switch is disabled, it remains off until FB voltage falls below the

reference voltage or inductor current falls below the limit current. During high-side switch is off, low-side switch

remains on until inductor current approaches 0. DCDC converter regulates the output voltage by repeating the above

operation.

Therefore, oscillator frequency varies by input voltage, output voltage, output current and external circuit (R1, L, Cf).

In addition, the feedback loop from LX pin through R1 and from DVOUT through Cf eliminate phase lag by output

capacitor providing the stable loop and fast transient response.

However, the equivalent series resistance causes output voltage to shift by output current. (Theoretically, output voltage

falls [IOUT(A)ｘDCR(Ω)])

7.2.1 Step-down DC/DC Converter Block Diagram

R1=R2*(DVOUT/V

-1)

FB

DVOUT=Set output voltage

V

= 0.6V (Internal reference voltage)

FB

L

x 10Cf =

R1

Fig 7-1 Step-down DC/DC Converter Block Diagram

External components example

- DVOUT=1.2V.

R

=220kΩ, R2=220kΩ, Cf=100pF

1

- DVOUT=1.8V.

R

=220kΩ, R2=110kΩ, Cf=100pF

1

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

7.2.2 Target Electrical Characteristics

Operating Conditions (unless otherwise specified) VIN = 3.6V, C

= 1μF, Ta = 25℃

REFO

Symbol Parameter Condition Min Typ Max Units

VIN Input Voltage - 3.3 4.5 V

DVOUT Output Voltage Range DIOUT=200mA 1.0 2.0 V

DIOUT

Maximum continuation

output current

DISS Consumption Current

DIsd Standby Current

VIN=3.3~4.5V 300 mA

VIN=3.6V

DIOUT=0mA, DVOUT=1.2V

VIN=4.5V

OFF state

45 μA

0.01 μA

DILx DC/DC Limit Current - 600 900 1500 mA

t

Protection Delay Time -

prot

ΔVFB

ΔVIN

FB Line Regulation

(DC/DC)

VIN=3.3~4.5V

DIOUT=200mA

1.6

*1

10 mV

ms

tr Soft Start Time - 120 μs

VFB V

ΔVFB

ΔT

Temperature Coefficient

Voltage - -1.5% 0.6 +1.5% V

FB

Output Voltage

-30℃≦Ta≦+85℃ ±100 ±300 ppm/℃

TONmin Minimum On Time - 100 ns

Table 7-8 Step-down DCDC Converter Electrical Characteristics

Note*1: If the over-current condition keeps on 1.6ms, a protection circuit starts and RN5T561 clears DCON bit in

DCCTL register to “0”. To release DCDC converter block from protection mode, enable DCDC converter by

setting DCON bit to “1” through I2C.

7.2.3 Recommended External Component

Vendor Part number Inductance [uH]

DCR [Ω]

FDK MIPW3226D2R2M 2.2 0.1

Table 7-9 Recommended External Component

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

7.3 Thermal Shutdown Circuit

Overheat state can be detected by comparing the output voltages from two temperature detection circuits, which have

different temperature characteristics. If the overheat state is detected, RN5T561 will turn off to protect itself from

overheating. When VEN signal is “H” (Enable), the thermal shutdown function is valid.

7.3.1 Thermal Shutdown Electrical Characteristics

Operating Conditions (unless otherwise specified) VIN= 3.6V, C

= 1μF, Ta = 25℃

REFO

Symbol Parameter Condition Min Typ Max Units

T

Detected Temperature - 140 ℃

DET

T

Return Temperature - 110 ℃

RET

ISS Supply Current - 5 μA

Table 7-10 Thermal Shutdown Electrical Characteristics

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

7.4 CPU Interface

RN5T561 uses I2C-Bus system for CPU connection via 2-wires. Connection and transfer system of I2C-Bus are

described in the following sections.

Note*: All register of RN5T561 is writing only and it is accessible via I2C-Bus only when LDO2 turns on.

7.4.1 Start and Stop Condition

Within the procedure of I2C-Bus, unique situations arise which are defined as Start and Stop conditions.

Fig 7-2 I2C-Bus Data Transmission

An “H” to “L” transition on SDA line while SCL is “H” indicates a Start condition. An “L” to “H” transition on SDA

line while SCL is “H” defines a Stop condition. Start and Stop conditions are always generated by master (Refer to the

figure below). The bus is considered to be busy after the start condition. The bus is considered to be free again a certain

time after the stop condition.

Fig 7-3 I2C-Bus Start and Stop Condition

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

7.4.2 Data Transmission and its Acknowledge

After start condition, data is transmitted by 1byte (8bits). The number of bytes that can be transmitted per transmission

is not limited. Receiver must send an acknowledge signal to the transmitter every time 8bit data is transmitted.

Data transmission must be accompanied by acknowledge signal. The master generates the clock pulse for acknowledge

bit. The transmitter releases SDA line during the acknowledge clock pulse.

The receiver must pull down SDA line during the acknowledge clock pulse so that it remains stable “L” during “H”

period of this clock pulse.

Fig 7-4 I2C-Bus Data Transmission and Acknowledge

7.4.3 I2C-Bus Slave Address

After the start condition, a slave address is sent. This address is 7 bits long followed by. The slave address of RN5T561

is specified at 32h.

A7 A6 A5 A4 A3 A2 A1

Setting

value

0 1 1 0 0 1 0

A7～A1: Slave Address

Table 7-11 Slave Address of RN5T561

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

7.4.4 Data Transmission Write Format

The transmission format for the slave address allocated to each IC is defined by I2C-Bus standard. However

transmission method of address information of each IC is not defined. RN5T561 transmits data to the internal address

pointer at 1byte continue to the slave address and write command. For the data transmission, please transmit MSB first

from Master and following data in sequence.

Fixed to "0" (Write)

0S 1 1 0 0 1 0 A A

Comman

0

d

Data

Comman

A

d

Data

Comman

d

Data

A

P

Writing of Command and Transmission of slave address (32h)

Master to Slave

S Start Condition

data to the internal

register

Slave to Master AAA Acknowledge Signal

P Stop Condition

Fig 7-5 Data Transmission Write Format

7.4.5 Internal Register Write-in Timing

Writing of Command and data to the internal register

Fig 7-6 Internal Register Write-in Timing

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

7.4.6 AC Characteristics of I2C-Bus

Operating Conditions (unless otherwise specified) VIN= 3.6V, C

= 1μF, Ta = 25℃

REFO

Symbol Parameter Condition Min Typ Max Units

f

SCL Clock Frequency - 400 kHz

SCL

t

BUF

t

LOW period of SCL clock - 1.3 μs

LOW

t

HIGH period of SCL clock - 0.6 μs

HIGH

t

SU;STA

t

HD;STA

t

SU;STO

t

HD;DAT

t

SU;DAT

Set-up time for a repeated START condition

Hold time (repeated) START condition - 0.6 μs

Set-up time for STOP Condition - 0.6 μs

Data hold time - 0 μs

Data Set-up Time -

Bus Free Time between

a STOP and START condition

- 1.3 μs

- 0.6 μs

100

*2

ns

tR Rise Time of both SCL and SDA signals - 300 ns

tF

tSP

Fall Time of both SCL and SDA signals

Spike Width that can be

Removed with Input Filter

- 300 ns

- 50 *1 ns

Table 7-12 I2C-Bus Electrical Characteristics

Note*: All the above-mentioned values are corresponding to V

Note*1: Guaranteed by design not production tested.

Note*2: Standard mode is allowed in I

2

C-Bus standard. For Standard mode, it needs to satisfy the condition;

tSU;DAT>=250ns

Fig 7-7 AC Characteristics of I2C-Bus

min and V

IH

max level.

IL

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

8. Register

8.1 Register Map

Function

Name

C2 C1 C0 D4 D3 D2 D1 D0

DCCTL

LDOCTL 0 0 1 - LDO4ON LDO3ON - LDO1ON

MODECTL 0 1 0 - - LDO3ECO LDO2ECO LDO1ECO

TEST

Note*1: The registers except above top 3 are Test registers. Don’t touch Test registers.

0 0 0 - - - -

All other registers except above.

Command Data

*1

Table 8-1 Register Map

Don’t touch.

DCON

8.2 DC/DC Converter Control Register: DCCTL (Command 000b)

bit Name R/W Function 1 0 Initial value

4-1 - - Reserved - - -

0 DCON W

DC/DC converter ON/OFF control bit

ON OFF 1

8.3 LDO Control Register: LDOCTL (Command 001b)

bit Name R/W Function 1 0 Initial value

4 - - Reserved - - -

3 LDO4ON W LDO4 ON/OFF control bit ON OFF 1

2 LDO3ON W LDO3 ON/OFF control bit ON OFF 1

1 - - Reserved - - -

0 LDO1ON W LDO1 ON/OFF control bit ON OFF 1

8.4 Mode Control Register: MODECTL (Command 010b)

bit Name R/W Function 1 0 Initial value

4-3 - - Reserved - - -

2 LDO3ECO W

1 LDO2ECO W

0 LDO1ECO W

LDO3

ECO-mode control bit

LDO2

ECO-mode control bit

LDO1

ECO-mode control bit

ECO Normal 0

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

9. Electrical Characteristics

9.1 Absolute Maximum Ratings

The operation exceeding “Absolute Maximum Ratings” below may cause permanent damage to the device. The

operation of the device within the stated ratings below is not guaranteed.

Symbol Parameter Condition Rated value Units

VIN1

VIN2

VIN3

VIN4

IN1 Input Voltage Range SCL, SDA -0.3～VOUT2 +0.3 V IN2 Input Voltage Range VEN -0.3～VIN2 +0.3 V

PD

T

Storage Temperature - -55～+125 ℃

stg

Note*: Derate 17.2[mW/℃] above +70℃.

Power Supply Voltage Voltage Input Pins -0.3～6.0 V

Package

Allowable Dissipation

Mounted on Board,

T

= 70℃

a

950* mW

Table 9-1 Absolute Maximum Ratings

9.2 Recommended Operation Conditions

Symbol Parameter Condition Min Typ Max Units

VIN1 Power Supply Voltage1 Battery Voltage Input Pin 3.3 4.5 V

VIN2 Power Supply Voltage2 Battery Voltage Input Pin 3.3 4.5 V

VIN3 Power Supply Voltage3

VIN4 Power Supply Voltage4 Battery or USB Voltage Input Pin 3.6 5.5 V

Ta Temperature of Operation - -30 +85 ℃

Table 9-2 Recommendation of Operation Conditions

Regulator Voltage Input Pin 1.6 2.0 V

Battery Voltage Input Pin 3.3 4.5 V

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE

9.3 DC Characteristics

Operating Conditions (unless otherwise specified) VIN= 3.6V, C

= 1μF, Ta = 25℃

REFO

Symbol Parameter Condition Min Typ Max Units

VT1+

VT1-

V

HIS1

I

Input Leakage Current 1 VEN, V=0 -3 3 μA

IL1

“H” input rising threshold

voltage 1 (Schmitt)

“L” input falling threshold

voltage 1 (Schmitt)

VEN 0.6 1.6 V

VEN 0.4 1.0 V

Schmitt hysteresis voltage 1 VEN 0.1 V

RPD Pull-down resistance VEN 3 MΩ

VT2+

VT2-

V

HIS2

“H” input rising threshold

voltage 2 (Schmitt)

“L” input falling threshold

voltage 2 (Schmitt)

Schmitt hysteresis voltage 2 SCL, SDA

VOL “L” Output Voltage SDA, I

I

Input Leakage Current 1

IL2

IOZ Off Leakage Current

I

SHUT

Shut Down Supply Current

(All output off)

V=0～VOUT2

VIN1~3=3.6V

VIN4=5.0V

SCL, SDA

= 3mA 0.4 V

sink

SCL, SDA

SDA

VEN=0V

VOUT2

×0.5

VOUT2

×0.2

VOUT2

×0.10

V

VOUT2

×0.8

VOUT2

×0.5

-3 3 μA

1 μA

V

Terminal equivalent circuit

Table 9-3 DC Characteristics

Fig 9-1 Terminal Equivalent Circuit

RN5T561-0000 POWER MANAGEMENT SYSTEM DEVICE