ADP8860 Analog Devices, ADP8860 Datasheet - Page 15

• 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

nSTBY
nRST
V
OUT
V
IN
SHUTDOWN
V
IN
V
IN
~100µs DELAY BETWEEN POWER UP AND
WHEN I
CROSSES ~2.05V AND TRIGGERS POWER ON RESET
BIT nSTBY IN REGISTER
MDCR GOES HIGH
~3.75mA CHARGES
V
OUT
2
C COMMANDS CAN BE RECEIVED
SOFT START
TO V
IN
25µs TO 100µs NOISE FILTER
LEVEL
Figure 28. Typical Timing Diagram
Rev. 0 | Page 15 of 52
10µs 100µs
1×
1.5×
2×
GAIN CHANGES ONLY OCCUR WHEN NECESSARY,
BUT HAVE A MIN TIME BEFORE CHANGING
nRST IS LOW, WHICH FORCES nSTBY LOW
AND RESETS ALL I
nRST MUST BE HIGH FOR 20µs (MAX)
BEFORE SENDING I
2
C REGISTERS
SOFT START
2
C COMMANDS
ADP8860