MAX16804 Datasheet, PDF (5/11 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
Typical Operating Characteristics (continued)
(V_IN = 12V, V_EN = V_IN, C_V5 = 0.1µF, I_V5 = 0, CS- = GND, R_SENSE = 0.56Ω, connect OUT to CS+, V_DIM = 4V, T_A = +25°C, unless
otherwise noted.)
OUTPUT CURRENT DUTY CYCLE
vs. ANALOG DIM VOLTAGE
120
V_IN = 12V
100
80
60
40
20
0
0
1
2
3
4
ANALOG DIM VOLTAGE (V)
I_DIM vs. V_DIM
300
V_IN = 16V
250
200
150
100
50
0
0 2 4 6 8 10 12 14 16
V_DIM (V)
PIN
1, 20
2, 3
4, 9, 11, 18
5–8, 10, 16
12, 15
13
14
17
19
—
NAME
OUT
IN
N.C.
GND
V5
CS+
CS-
DIM
EN
EP
Pin Description
FUNCTION
Current-Regulated Output. Connect pin 1 to pin 20.
Input Supply. Bypass IN with a 0.1µF (min) capacitor to GND. Connect pin 2 to pin 3.
No Connection. Leave unconnected (internal connection).
Ground
+5V Regulated Output. Connect a 0.1µF capacitor from V5 to GND.
Positive Input of the Internal Differential Amplifier. Connect the current-sense resistor between CS+
and CS- to program the output current level.
Negative Input of the Internal Differential Amplifier. Connect the current-sense resistor between
CS- and CS+ to program the output current level.
Dimming Input. See the Dimming Input (DIM) section.
Enable Input. Drive EN high to enable the output and the 5V LDO.
Exposed Pad. Connect to the ground plane for effective power dissipation. Do not use as the only
ground connection.
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