LT3595EUHH-TRPBF Просмотр технического описания (PDF) - Linear Technology
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производитель
LT3595EUHH-TRPBF Datasheet PDF : 16 Pages
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LT3595
PIN FUNCTIONS
L1-16 (Pins 1, 3, 7, 9, 10, 12, 16, 18, 29, 31, 35, 37,
38, 40, 44, 46): LED Pins. Connection point for the anode
of the highest LED in each string.
SW1-16 (Pins 2, 4, 6, 8, 11, 13, 15, 17, 30, 32, 34,
36, 39, 41, 43, 45): Switch Pins. Minimize trace area
at these pins to minimize EMI. Connect the inductors to
these pins.
VIN (Pins 5, 14): 4.5V to 45V Input Supply Pin.
Must be locally bypassed. Both VIN pins must be tied
together.
PWM1-16 (Pins 19-22, 25-28, 47-50, 53-56): Input Pin
for LED Dimming Function. The rising edge of each channel
must be synchronized.
⎯O⎯P⎯E⎯N⎯L⎯E⎯D (Pin 23): Open Collector Output for Reporting
Faults. If any channel experiences an open LED connec-
tion, the ⎯O⎯P⎯E⎯N⎯L⎯E⎯D pin is pulled low.
⎯S⎯H⎯D⎯N (Pin 24): Shutdown. Tie to 1.6V or greater to enable
the device. Tie below 0.4V to turn off the device.
NC (Pins 33, 42): No Connect. Connect these pins to
ground.
RSET (Pin 51): External Resistor to Set the Master LED
Current. The LED current is equal to:
1.21V
ILED = RSET • 1240
where RSET is the value of the external resistor. Use a
kelvin for ground metal.
VCC (Pin 52): 3.3V Input Supply. Must be locally by-
passed.
Exposed Pad (Pin 57): Ground. The Exposed Pad must
be soldered to PCB. Use wide metal from backtab to the
grounds of the input capacitors on VCC and VIN.
3595f
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