MAX17149ETE+ Maxim Integrated Products, MAX17149ETE+ Datasheet - Page 9

• Manufacturer Part Number: MAX17149ETE+
• Description: LED Drivers 6-String WLED Driver
• Manufacturer: Maxim Integrated Products

Specifications of MAX17149ETE+

• Operating Supply Voltage: 3 V to 26 V
• Maximum Supply Current: 4 mA
• Maximum Power Dissipation: 1176 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TQFN-16
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PIN
10
11
12
13
14
15
16
—
NAME
GND
ISET
FB3
FB4
FB5
FB6
EN
EP
Current-Balancer Output. LED string cathode connection. FB3 is the open-drain output of an internal
regulator, which controls current through FB3. FB3 can sink up to 45mA. If unused, connect FB3 to
GND or leave high impedance.
Current-Balancer Output. LED string cathode connection. FB4 is the open-drain output of an internal
regulator, which controls current through FB4. FB4 can sink up to 45mA. If unused, connect FB4 to
GND or leave high impedance.
Current-Balancer Output. LED string cathode connection. FB5 is the open-drain output of an internal
regulator, which controls current through FB5. FB5 can sink up to 45mA. If unused, connect FB5 to
GND or leave high impedance.
Current-Balancer Output. LED string cathode connection. FB6 is the open-drain output of an internal
regulator, which controls current through FB6. FB6 can sink up to 45mA. If unused, connect FB6 to
GND or leave high impedance.
Analog Ground. Connect to ISET resistor ground as close as possible.
Full-Scale LED Current Adjustment Pin. The resistance from ISET to GND controls the full-scale current
in each LED string:
I
The acceptable resistance range is 44.44kI < R
current of 45mA > I
Enable Input. Pull EN higher than 2.2V to enable the device, and pull lower than 0.8V to disable the device.
Exposed Backside Pad. Solder to the circuit board ground plane with sufficient copper connection to
ensure low thermal resistance. See the PCB Layout Guidelines section.
Low-Cost, 6-String WLED Drivers with
LED_FS
= 20mA O 100kI/R
LED_FS
Quick-PWM Step-Up Converter
> 10mA.
ISET
FUNCTION
ISET
< 200kI, which corresponds to full-scale LED
Pin Description
9