MAX6965AEE+ Maxim Integrated Products, MAX6965AEE+ Datasheet - Page 16

• Manufacturer Part Number: MAX6965AEE+
• Description: IC LED DRIVER LINEAR 16-QSOP
• Manufacturer: Maxim Integrated Products
• Type: Linear (I²C Interface)r

Specifications of MAX6965AEE+

• Topology: Open Drain, PWM
• Number Of Outputs: 9
• Internal Driver: Yes
• Type - Primary: Backlight, LED Blinker
• Type - Secondary: RGB, White LED
• Frequency: 400kHz
• Voltage - Supply: 2 V ~ 3.6 V
• Voltage - Output: 7V
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Operating Temperature: -40°C ~ 125°C
• Current - Output / Channel: 50mA
• Internal Switch(s): Yes
• Number Of Segments: 6
• Operating Supply Voltage: 2 V to 3.6 V
• Maximum Supply Current: 110 uA
• Maximum Power Dissipation: 666 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

V
V
V
sinking I
I
For example, to operate a 2.2V red LED at 14mA from a
5V supply, R
The MAX6965 can be used to drive loads drawing more
than 50mA, like relays and high-current white LEDs, by
paralleling outputs. Use at least one output per 50mA of
load current; for example, a 6V 330mW relay draws
55mA and needs two paralleled outputs to drive it.
Ensure that the paralleled outputs chosen are controlled
by the same blink phase register, i.e., select outputs from
the O0 through O7 range. This way, the paralleled out-
puts are turned on and off together. Do not use output
O8 as part of a load-sharing design. O8 cannot be
switched at the same time as any of the other outputs
because it is controlled by a different register.
9-Output LED Driver with Intensity Control
and Hot-Insertion Protection
Table 9. PWM Intensity Settings (Blink Disabled)
16
LED
SUPPLY
LED
OL
INTENSITY
GLOBAL)
SETTING
OUTPUT
Driving Load Currents Higher than 50mA
(OR
0xA
0xB
0xC
0xD
is the desired operating current of the LED (A).
0x0
0x1
0x2
0x3
0x4
0x5
0x6
0x7
0x8
0x9
0xE
0xF
______________________________________________________________________________________
is the output low voltage of the MAX6964 when
is the forward voltage of the LED (V).
LED
is the supply voltage used to drive the LED (V).
(V).
LED
OUTPUT BLINK PHASE 0
LOW TIME
Static low
PWM DUTY CYCLE
10/16
11/16
12/16
13/16
14/16
15/16
= (5 - 2.2 - 0.25) / 0.014 = 182Ω.
REGISTER BIT = 0
1/16
2/16
3/16
4/16
5/16
6/16
7/16
8/16
9/16
HIGH TIME
Static low
15/16
14/16
13/16
12/16
11/16
10/16
9/16
8/16
7/16
6/16
5/16
4/16
3/16
2/16
1/16
OUTPUT BLINK PHASE 0
LED BEHAVIOR WHEN
Highest PWM intensity
(LED on continuously)
Lowest PWM intensity
Full intensity, no PWM
REGISTER BIT = 0
(LED IS ON WHEN
OUTPUT IS LOW)
Figure 19. Diode-Protected Switching Inductive Load
OUTPUT BLINK PHASE 0
µC
LOW TIME
impedance
Static high
SDA
SCL
I/O
I/O
PWM DUTY CYCLE
15/16
14/16
13/16
12/16
11/16
10/16
REGISTER BIT = 1
9/16
8/16
7/16
6/16
5/16
4/16
3/16
2/16
1/16
0.047µF
SDA
SCL
BLINK
RST
AD0
HIGH TIME
impedance
Static high
MAX6965
10/16
11/16
12/16
13/16
14/16
15/16
2V TO 3.6V
1/16
2/16
3/16
4/16
5/16
6/16
7/16
8/16
9/16
GND
V+
OUTPUT BLINK PHASE 0
O0
O1
O2
O3
O4
O5
O6
O7
O8
LED BEHAVIOR WHEN
Highest PWM intensity
Lowest PWM intensity
LED off continuously
REGISTER BIT = 1
(LED IS ON WHEN
OUTPUT IS LOW)
BAS16
7V