MAX6947ATE+ Maxim Integrated Products, MAX6947ATE+ Datasheet - Page 10
![IC LED DRIVER LINEAR 16-TQFN](/photos/6/66/66625/16-tqfn_exp_pad_21-0136_sml.jpg)
MAX6947ATE+
Manufacturer Part Number
MAX6947ATE+
Description
IC LED DRIVER LINEAR 16-TQFN
Manufacturer
Maxim Integrated Products
Type
Linear (I²C Interface)r
Datasheet
1.MAX6947ATE.pdf
(24 pages)
Specifications of MAX6947ATE+
Constant Current
Yes
Topology
Open Drain, PWM
Number Of Outputs
10
Internal Driver
Yes
Type - Primary
Backlight
Type - Secondary
RGB, White LED
Frequency
400kHz
Voltage - Supply
2.25 V ~ 3.6 V
Voltage - Output
7V
Mounting Type
Surface Mount
Package / Case
16-TQFN Exposed Pad
Operating Temperature
-40°C ~ 125°C
Current - Output / Channel
20mA
Internal Switch(s)
Yes
Number Of Segments
3
Low Level Output Current
21.12 mA
Operating Supply Voltage
2.25 V to 3.6 V
Maximum Supply Current
60 uA
Maximum Power Dissipation
1176 mW
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Efficiency
-
Lead Free Status / Rohs Status
Details
The global-current register sets the full (maximum) con-
stant-current sink into an I/O port configured as an out-
put (Table 5). Each output port’s individual constant-
current sink can set to either half or full scale of the
global current by the output-current registers (Table 6).
By default, maximum current is 20mA, hence the default
maximum half current is 10mA.
Set each output port’s individual constant-current sink
to either half scale or full scale of the global current.
Table 5. Global-Current Register Format (0x15)
Table 6. Output-Current Register Format
10-Port, Constant-Current LED Driver and
I/O Expander with PWM Intensity Control
10
Full current is 2.5mA; half current is 1.25mA
Full current is 5mA; half current is 2.5mA
Full current is 7.5mA; half current is 3.75mA
Full current is 10mA; half current is 5mA
Full current is 12.5mA; half current is 6.25mA
Full current is 15mA; half current is 7.5mA
Full current is 17.5mA; half current is 8.75mA
Full current is 20mA; half current is 10mA
Output P0 is set to half constant current
Output P0 is set to full constant current
Output P1 is set to half constant current
Output P1 is set to full constant current
Output P2 is set to half constant current
Output P2 is set to full constant current
Output P3 is set to half constant current
Output P3 is set to full constant current
Output P4 is set to half constant current
Output P4 is set to full constant current
Output P5 is set to half constant current
Output P5 is set to full constant current
Output P6 is set to half constant current
Output P6 is set to full constant current
Output P7 is set to half constant current
Output P7 is set to full constant current
Output P8 is set to half constant current
Output P8 is set to full constant current
Output P9 is set to half constant current
Output P9 is set to full constant current
______________________________________________________________________________________
DESCRIPTION
DESCRIPTION
Ports Configured as Outputs
CODE (HEX)
ADDRESS
0x13
0x14
D7
X
X
X
X
X
X
X
X
D7
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
D6
X
X
X
X
X
X
X
X
Use the output-current registers to set the individual
currents (Table 6). Set the global current by the global-
current register (Table 5).
Set each output current individually to best suit the
maximum operating current of an LED load, or even
adjust on the fly to double the effective intensity control
range of each output. The individual current selection is
10mA (half) or 20mA (full) when setting the global-cur-
rent register to its maximum value.
D6
X
X
X
X
X
X
X
X
X
X
X
X
0
1
X
X
X
X
X
X
D5
X
X
X
X
X
X
X
X
D5
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
REGISTER BIT
D4
X
X
X
X
X
X
X
X
REGISTER BIT
D4
X
X
X
X
X
X
X
X
0
1
X
X
X
X
X
X
X
X
X
X
D3
X
X
X
X
X
X
X
X
D3
X
X
X
X
X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
D2
0
0
0
0
1
1
1
1
D2
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
D1
0
0
1
1
0
0
1
1
D1
X
X
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
D0
D0
0
1
0
1
0
1
0
1
0
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
1
X
X