RT5021 datasheet(55/67 Pages) RICHTEK

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RT5021

DS5021-01 April 2013

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TS Meter [2:0]

TS Meter

[2:0] = 011

0°C

10°C

45°C

60°C

TS Meter

[2:0] = 001

TS Meter

[2:0] = 000

TS Meter

[2:0] = 100

TS Meter

[2:0] = 110

VP < 0.8V

(VP UVLO)

TS Meter [2:0]

= 010

Address

Name

Bit7

(MSB)

Bit6

Bit5

Bit4

Bit3

Bit2

Bit1

Bit0

(LSB)

Meaning

TS_METER [2:0]

NoBAT

EOC

PGOOD

THR

SAFE

Default

A10

0x0A

Read/Write

Reports the battery temperature and VP status by detecting the TS pin voltage.

TS_METER [2:0]

Note : when PMU turns on, it would check TS_Meter [2:0] and compare to the

value 000. If it is different, INT would be asserted. After PMU is on, once any bits

of TS_Meter [2:0] toggles, INT also asserts again.

Means the battery installed or not.

0 : BAT Installed

1 : No Battery Installed (TS > 90% of VP)

NoBAT

Note : when PMU turns on, it would check the bit NoBAT and compare to the value

0. If it is different, INT would be asserted. After PMU is on, once NoBAT bit

toggles, INT also asserts again.

End of charge (EOC) bit show the charge status. If EOC = 1 means the charger is

in EOC status.

0 : During Charging

1 : Charging Done or Recharging after Termination

EOC

Note: when PMU turns on, it would check the bit EOC and compare to the value 0.

If it is different, INT would be asserted. After PMU is on, once EOC bit toggles, INT

also asserts again.

PGOOD bit means the VIN power status.

Input Status

PGOOD Bit Status

VIN < VUVLO

VUVLO < VIN < VBAT +

VOS_L

VBAT + VOS_H < VIN <

VOVP

VIN > VOVP

PGOOD

Note : when PMU turns on, it would check the bit PGOOD and compare to the

value 0. If it is different, INT would be asserted. After PMU is on, once PGOOD bit

toggles, INT also asserts again.

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