ADP8863ACPZ-R7 datasheet(3/48 Pages) AD

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ADP8863

Rev. 0 | Page 3 of 48

SPECIFICATIONS

VIN = 3.6 V, SCL = 2.7 V, SDA = 2.7 V, nINT = open, nRST = 2.7 V, CMP_IN = 0 V, VD1:D7 = 0.4 V, Capacitor C1 = 1 μF, Capacitor C2 = 1 μF,

COUT = 1 μF, typical values are at TA = 25°C and are not guaranteed, minimum and maximum limits are guaranteed from TA = −40°C to

+85°C, unless otherwise noted.

Table 1.

Parameter

Symbol

Test Conditions/Comments

Min

Typ

Max

Unit

SUPPLY

Input Voltage

Operating Range

VIN

2.5

5.5

Start-Up Level

VIN(START)

VIN increasing

2.05

2.30

Low Level

VIN(STOP)

VIN decreasing

1.75

1.97

VIN(START) Hysteresis

VIN(HYS)

After startup

UVLO Noise Filter

tUVLO

μs

Quiescent Current

Prior to VIN(START)

IQ(START)

VIN = VIN(START) − 100 mV

μA

During Standby

IQ(STBY)

VIN = 3.6 V, Bit nSTBY = 0, SCL = SDA = 0 V

0.3

1.0

μA

After Startup and Switching

IQ(ACTIVE)

VIN = 3.6 V, Bit nSTBY = 1, IOUT = 0 mA,

gain = 2×

4.5

7.2

OSCILLATOR

Switching Frequency

fSW

0.8

1.32

MHz

Duty Cycle

OUTPUT CURRENT CONTROL

Maximum Drive Current

ID1:D7(MAX)

VD1:D7 = 0.4 V

D1 to D7

Bit SCR = 0 in the ISC7 register

TJ = 25°C

26.2

34.1

TJ = −40°C to +85°C

24.4

34.1

D7 Only (60 mA Setting)

ID7(60 mA)

VD7 = 0.4 V, Bit SCR = 1 in the ISC7 register

TJ = 25°C

52.5

TJ = −40°C to +85°C

48.8

LED Current Source Matching1

IMATCH

All Current Sinks

IMATCH7

VD1:D7 = 0.4 V

2.0

D2 to D7 Current Sinks

IMATCH6

VD2:D7 = 0.4 V

1.5

Leakage Current on LED Pins

ID1:D7(LKG)

VIN = 5.5 V, VD1:D7 = 2.5 V, Bit nSTBY = 1

0.5

μA

Equivalent Output Resistance

ROUT

Gain = 1×

VIN = 3.6 V, IOUT = 100 mA

0.5

Gain = 1.5×

VIN = 3.1 V, IOUT = 100 mA

3.0

Gain = 2×

VIN = 2.5 V, IOUT = 100 mA

3.8

Regulated Output Voltage

VOUT(REG)

VIN = 3 V, gain = 2×, IOUT = 10 mA

4.3

4.9

5.5

AUTOMATIC GAIN SELECTION

Minimum Voltage

Gain Increases

VHR(UP)

Decrease VD1:D7 until the gain switches up

162

200

276

Minimum Current Sink Headroom

Voltage

VHR(MIN)

IDX = IDX(MAX) × 95%

180

Gain Delay

tGAIN

The delay after gain has changed and

before gain is allowed to change again

100

μs

AMBIENT LIGHT SENSING

COMPARATORS

Ambient Light Sensor Current

IALS

CMP_IN = VD6 = 2.8 V, Bit CMP2_SEL = 1

0.70

1.08

1.33

DAC Bit Step

Threshold L2 Level

IL2BIT

IL2BIT = IALS/250

4.3

μA

Threshold L3 Level

IL3BIT

IL3BIT = IALS/2000

0.54

μA

FAULT PROTECTION

Start-Up Charging Current Source

ISS

VIN = 3.6 V, VOUT = 0.8 × VIN

2.5

3.75

5.5

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