MAX16816 Datasheet, PDF (9/33 Pages) Maxim Integrated Products – Programmable Switch-Mode LED Driver with Analog-Controlled PWM Dimming

Programmable Switch-Mode LED Driver
with Analog-Controlled PWM Dimming
ELECTRICAL CHARACTERISTICS
Note 1: Dropout voltage is defined as the input to output differential voltage at which the output voltage drops 100mV below its nom-
inal value measured at output.
Note 2: V_{CLMP_TH} determines the voltage necessary to operate the current-sense amplifier. The DIM driver requires 2.5V for (V_CLMP
- V_LO) to drive a FET. V_HI is typically one diode drop above V_CLMP. A large capacitor connected to V_CLMP slows the
response of the LED current-sense circuitry, resulting in current overshoot. To ensure proper operation, connect a 0.1µF
capacitor from CLMP to LO.
Note 3: Minimum pulse width required to guarantee proper dimming operation.
Note 4: FAULT multiplexes a programming interface and fault indication functionality. At power-up initialization, an internal timer
enables FAULT and two programming passcodes must be entered within the programming slot to enter programming
mode. If the programming passcodes are not received correctly within the programming slot, FAULT goes back towards
fault indication. Cycling power to the device is required to re-attempt entry into programming mode.
Note 5: Not production tested. Guaranteed by design.
Note 6: Recovery time is the time required for FAULT to be pulled high by the internal 10kΩ resistor.
Typical Operating Characteristics
(V_CC = V_UVEN = 14V, C_REG1 = 1µF, C_REG2 = 10µF, C_CLMP = 0.1µF, R_CS = 0.1Ω, Binning adjustment register is ‘0000’, T_A = +25°C,
unless otherwise noted.)
SHUTDOWN CURRENT
vs. TEMPERATURE
26
25
24
23
22
21
20
19
18
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
OPERATING CURRENT
vs. TEMPERATURE
4.0
3.8
3.6
3.4
3.2
3.0
2.8
2.6
-60 -40 -20
DGT AND DRV
NOT SWITCHING
0 20 40 60 80 100 120 140
TEMPERATURE (°C)
OUTPUT CURRENT
vs. TEMPERATURE
600
550
RCS = 0.2Ω
500
450
400
350
RCS = 0.3Ω
300
250
200
-60 -40 -20 0 20 40 60 80 100 120 140
TEMPERATURE (°C)
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