ADP8860 Analog Devices, ADP8860 Datasheet - Page 3

• Manufacturer Part Number: ADP8860
• Description: Charge Pump, 7-Channel Smart LED Driver with I2C Interface
• Manufacturer: Analog Devices

Specifications of ADP8860

• Vin Range: 2.4V to 5.5V
• Vout (v): 4.3 to 5.5
• Synchronous: No
• Package: 20-Lead WLCSP
• Led Configuration: Parallel
• Topology: Capacitive
• I2c Support: Yes
• Max Iout (ma): 60mA
• Brightness Control: I2C
• Peak Efficiency (%): 89%
• Switching Frequency: 1MHz

SPECIFICATIONS
VIN = 3.6 V, SCL = 2.7 V, SDA = 2.7 V, nINT = open, nRST = 2.7 V, CMP_IN = 0 V, V
typical values are at T
otherwise noted.
Table 1.
Parameter
SUPPLY
OSCILLATOR
OUPUT CURRENT CONTROL
AUTOMATIC GAIN SELECTION
Input Voltage
V
UVLO Noise Filter
Quiescent Current
Switching Frequency
Duty Cycle
Maximum Drive Current
LED Current Source Matching
Leakage Current on LED Pins
Equivalent Output Resistance
Regulated Output Voltage
Minimum Voltage
Minimum Current Sink Headroom
Gain Delay
IN(START)
Operating Range
Startup Level
Low Level
Prior to V
During Standby
After Startup and Switching
D1 to D7
D7 Only (60 mA Setting)
All Current Sinks
D2 to D7 Current Sinks
Gain = 1×
Gain = 1.5×
Gain = 2×
Gain Increases
Voltage
T
T
T
T
J
J
J
J
= 25°C
= −40°C to +85°C
= 25°C
= −40°C to +85°C
Hysteresis
IN(START)
A
= 25°C and are not guaranteed, minimum and maximum limits are guaranteed from T
1
Symbol
V
V
V
V
t
I
I
I
I
f
D
I
I
I
I
I
I
R
V
V
V
t
Q
Q(START)
Q(STBY)
Q(ACTIVE)
D1:D7(MAX)
D7(60 mA)
MATCH
MATCH7
MATCH6
D1:D7(LKG)
SW
UVLO
GAIN
IN
IN(START)
IN(STOP)
IN(HYS)
OUT
OUT(REG)
HR(UP)
HR(MIN)
Test Conditions/Comments
V
V
After startup
V
V
V
gain = 2×
V
Bit SCR = 0 in the ISC7 register
V
V
V
V
V
V
V
V
Decrease V
I
The delay after gain has changed and
before gain is allowed to change again
DX
IN
IN
IN
IN
IN
D1:D7
D7
D1:D7
D2:D7
IN
IN
IN
IN
IN
= I
increasing
decreasing
= V
= 3.6 V, Bit nSTBY = 0, SCL = SDA = 0 V
= 3.6 V, Bit nSTBY = 1, I
= 5.5 V, V
= 3.6 V, I
= 3.1 V, I
= 2.5 V, I
= 3 V, gain = 2×, I
= 0.4 V, Bit SCR = 1 in the ISC7 register
DX(MAX)
= 0.4 V
= 0.4 V
= 0.4 V
IN(START)
Rev. 0 | Page 3 of 52
D1:D7
OUT
OUT
OUT
× 95%
D1:D7
− 100 mV
= 100 mA
= 100 mA
= 100 mA
until the gain switches up
= 2.5 V, Bit nSTBY = 1
OUT
= 10 mA
OUT
= 0 mA,
D1:D7
= 0.4 V, C1 = 1 μF, C2 = 1 μF, C
Min
2.5
1.75
0.8
26.2
24.4
52.5
48.8
4.3
162
A
= −40°C to +85°C, unless
Typ
2.05
1.97
80
10
10
0.3
4.5
1
50
30
60
2.0
1.5
0.5
3.0
3.8
4.9
200
180
100
OUT
ADP8860
= 1 μF,
Max
5.5
2.30
1.0
7.2
1.32
34.1
34.1
67
67
0.5
5.5
276
Unit
V
V
V
mV
μs
μA
μA
mA
MHz
%
mA
mA
mA
mA
%
%
μA
Ω
Ω
Ω
V
mV
mV
μs