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ADP8863DBCP-EVALZ 数据表(PDF) 3 Page - Analog Devices

部件名 ADP8863DBCP-EVALZ
功能描述  Charge Pump,7-Channel Fun Lighting LED Driver
Download  48 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

ADP8863DBCP-EVALZ 数据表(HTML) 3 Page - Analog Devices

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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
V
Start-Up Level
VIN(START)
VIN increasing
2.05
2.30
V
Low Level
VIN(STOP)
VIN decreasing
1.75
1.97
V
VIN(START) Hysteresis
VIN(HYS)
After startup
80
mV
UVLO Noise Filter
tUVLO
10
μs
Quiescent Current
IQ
Prior to VIN(START)
IQ(START)
VIN = VIN(START) − 100 mV
10
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
mA
OSCILLATOR
Switching Frequency
fSW
0.8
1
1.32
MHz
Duty Cycle
D
50
%
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
30
34.1
mA
TJ = −40°C to +85°C
24.4
34.1
mA
D7 Only (60 mA Setting)
ID7(60 mA)
VD7 = 0.4 V, Bit SCR = 1 in the ISC7 register
TJ = 25°C
52.5
60
67
mA
TJ = −40°C to +85°C
48.8
67
mA
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
Ω
Gain = 1.5×
VIN = 3.1 V, IOUT = 100 mA
3.0
Ω
Gain = 2×
VIN = 2.5 V, IOUT = 100 mA
3.8
Ω
Regulated Output Voltage
VOUT(REG)
VIN = 3 V, gain = 2×, IOUT = 10 mA
4.3
4.9
5.5
V
AUTOMATIC GAIN SELECTION
Minimum Voltage
Gain Increases
VHR(UP)
Decrease VD1:D7 until the gain switches up
162
200
276
mV
Minimum Current Sink Headroom
Voltage
VHR(MIN)
IDX = IDX(MAX) × 95%
180
mV
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
mA
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
mA


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