Analog Devices EVAL-LT8376-AZ, Демонстрационное руководство, Страница: 2 / 10

2
DEMO MANUAL EVAL-LT8376-AZ
Rev. 0
PERFORMANCE SUMMARY
Specifications are at T
A
= 25°C
PARAMETER CONDITION MIN TYP MAX UNITS
Input Voltage EMIVIN Range Operating 43 57 V
Switching Frequency (f
SW
) R5 = 287k, JP2 = NO SSFM 350 kHz
Spread Spectrum (SSFM) Range R5 = 287k, JP2 = SSFM 350 440 kHz
I
LED
R1 = 0.05Ω, R8, R15 = 100k,
43V < V
IN
< 57V, V
LED
= 36V
1.5 A
Open LED Voltage V
OUT
(OVP) R7 = 1M, R6 = 24.9k 41 V
Typical Efficiency V
IN
= 50V, V
LED
= 36V, I
LED
= 1.5A
with Filters
without Filters
96
96.5
%
%
Internally-Generated PWM Dimming Range JP3 = INT, JP4 = INT 1/128 100 %
Internally-Generated PWM Dimming Frequency JP3 = INT, JP4 = INT
R12 = 118k, R5 = 287k
192 Hz
Peak Current Limit 3.3 3.6 3.9 A
EMIVIN Undervoltage Lockout (UVLO) Falling R3 = 402k, R2 = 12.7k 39.8 V
EMIVIN Enable Turn-On (EN) Rising R3 = 402k, R2 = 12.7k 42.3 V
BOARD PHOTO