MAX16832A_12 Datasheet, PDF (3/10 Pages) Maxim Integrated Products – 2MHz, High-Brightness LED Drivers with Integrated MOSFET and High-Side Current Sense

2MHz, High-Brightness LED Drivers with
Integrated MOSFET and High-Side Current Sense
ELECTRICAL CHARACTERISTICS (continued)
(V_IN = +24V, V_DIM = V_IN, T_A = T_J = -40°C to +125°C, unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
INTERNAL MOSFET
Drain-to-Source Resistance
LX Leakage Current
SYMBOL
CONDITIONS
R_DSON
I_{LX_LEAK}
V_IN = V_DIM = 24V, V_CS = 23.9V,
I_LX = 700mA
V_IN = V_DIM = 6.0V, V_CS = 5.9V,
I_LX = 700mA
V_DIM = 0V, V_LX = 65V
MIN TYP
0.45
1
MAX
0.9
2
10
UNITS
Ω
µA
DIM INPUT
DIM Input-Voltage High
DIM Input-Voltage Low
DIM Turn-On Time
DIM Input Leakage High
DIM Input Leakage Low
THERMAL SHUTDOWN
Thermal-Shutdown Threshold
Thermal-Shutdown Threshold
Hysteresis
THERMAL FOLDBACK
Thermal-Foldback Enable
Threshold Voltage
Thermal-Foldback Slope
TEMP_I Output Bias Current
V_IH
V_IL
t_{DIM_ON}
V_IN - V_CS = 100mV
V_CS - V_IN = 100mV
V_DIM rising edge to V_LX < 0.5V_IN
V_DIM = V_IN
V_DIM = 0V
Temperature rising
V_{TFB_ON}
FB_SLOPE
I_{TEMP_I}
V_DIM = 5V
V_DIM = 5V
T_A = +25 ^oC
2.8
V
0.6
V
60
ns
8
15
µA
-3
-1.5
0
µA
+165
o_C
10
o_C
1.9
2.0
2.12
V
0.75
1/V
25
26.5
28
µA
Typical Operating Characteristics
(V_IN = V_DIM = 48V, R_SENSE = 0.3Ω, L = 220µH (connected between IN and CS). Typical values are at T_A = +25°C, unless otherwise
noted.)
EFFICIENCY
vs. INPUT VOLTAGE
100
9 LEDs ^{11 LEDs 13 LEDs 15 LEDs}
7 LEDs
95
5 LEDs
3 LEDs
90
85
1 LED
80
75
70
5
15 25 35 45 55 65
VIN (V)
100
90
80
70
60
50
40
30
20
10
0
5
DUTY CYCLE
vs. INPUT VOLTAGE
15 LEDs
13 LEDs
11 LEDs
9 LEDs
7 LEDs
5 LEDs
3 LEDs
1 LED
15 25 35 45 55 65
VIN (V)
FREQUENCY
vs. INPUT VOLTAGE
500
450
15 LEDs
13 LEDs
400
11 LEDs
350
9 LEDs
300
7 LEDs
250
5 LEDs
200
3 LEDs
150 _{1 LED}
100
50
16 LEDs
0
5 15 25 35 45 55 65
VIN (V)
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