MAX16804ATP Datasheet, PDF (2/10 Pages) Maxim Integrated Products – High-Voltage, 350mA LED Driver with Analog and PWM Dimming Control

High-Voltage, 350mA LED Driver with
Analog and PWM Dimming Control
ABSOLUTE MAXIMUM RATINGS
IN to GND ...............................................................-0.3V to +45V
DIM, OUT, EN to GND .................................-0.3V to (V_IN + 0.3V)
IN Slew Rate (20V < V_IN < 45V) ...................................250mV/µs
CS+, V5 to GND .......................................................-0.3V to +6V
CS- to GND............................................................-0.3V to +0.3V
OUT Short Circuited to GND Duration
(at V_IN < +16V).................................................................1hour
Maximum Current Into Any Pin (except IN and OUT).........±20mA
Continuous Power Dissipation (T_A = +70°C)
20-Pin TQFN (derate 34.5mW/^°C above +70^°C) ......2758.6mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V_IN = V_EN = 12V, C_V5 = 0.1µF, I_V5 = 0, CS- = GND, R_SENSE = 0.56Ω (see the Typical Operating Circuit), V_DIM = 4V, T_A = T_J = -40°C
to +125°C, unless otherwise noted. Typical values are at T_A = T_J = +25°C.) (Note 1)
PARAMETER
Supply Voltage Range
Ground Current
Shutdown Supply Current
Guaranteed Output Current
Output Current Accuracy
Dropout Voltage (Note 3)
Output Current Slew Rate
(External PWM Signal at DIM)
Short-Circuit Current
ENABLE INPUT
SYMBOL
V_IN
I_G
I_SHDN
I_OUT
ΔV_DO
CONDITIONS
(Note 2)
I_LOAD = 350mA
V_EN ≤ 0.3V
R_SENSE = 0.55Ω
35mA < I_OUT < 350mA, not including
R_SENSE tolerance
I_OUT = 350mA, 12V < V_IN < 40V
I_OUT = 350mA, 6.5V < V_IN < 12V
Current rising, DIM rising to 4V
Current falling, DIM falling to 0.6V
V_OUT = 0V
MIN TYP MAX UNITS
5.5
40.0
V
2.5
4.5
mA
12
40
µA
350
mA
3
%
0.4
1.2
V
0.5
1.5
17
mA/µs
17
600
mA
EN Input Current
EN Input-Voltage High
EN Input-Voltage Low
Enable Turn–On Time
CURRENT SENSE (Note 4)
I_EN
V_IH
V_IL
t_ON
EN rising edge to 90% of OUT
100
nA
2.8
V
0.6
V
250
µs
Regulated R_SENSE Voltage
V_RSENSE
Input Current (CS+)
Input Current (CS-)
INTERNAL RAMP GENERATOR
Internal Ramp Frequency
f_RAMP
External Sync Frequency Range
f_DIM
External Sync Voltage Low
External Sync Voltage High
EXTERNAL PWM DIMMING INPUT
DIM Input Current
V_SENSE = V_CS+ - V_CS-
V_CS+ = 220mV
V_CS+ = 220mV
192
198
204
mV
+14
µA
-75
µA
180
200
220
Hz
80
2000
Hz
0.4
V
2.8
V
1
µA
Turn-On Time
Turn-Off Time
t_ON
After DIM rising to 4V (Note 5)
t_OFF After DIM falling to 0.6V (Note 5)
28
52
µs
19
38
µs
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