MAX16819 Datasheet, PDF (3/10 Pages) Maxim Integrated Products – 2MHz High-Brightness LED Drivers with High-Side Current Sense and 5000:1 Dimming

2MHz High-Brightness LED Drivers with
High-Side Current Sense and 5000:1 Dimming
ELECTRICAL CHARACTERISTICS (continued)
(V_IN = 12V, V_DIM = V_IN, C_VCC = 1µF, R_SENSE = 0.5Ω, T_A = T_J = -40°C to +125°C, unless otherwise noted. Typical values are at
T_A = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
GATE DRIVER
Gate Driver Source Current
Gate Driver Sink Current
Gate Driver Output-Voltage High
Gate Driver Output-Voltage Low
DIM INPUT
Maximum DIM Frequency
V_OH
V_OL
V_CSN = V_IN, V_DRV = 0.5 x V_CC
V_CSN = V_IN - 250mV, V_DRV = 0.5 x V_CC
I_DRV = 10mA
I_DRV = -10mA
f_DIM
0.5
A
1
A
V_CC - 0.5
V
0.5
V
20
kHz
DIM Input-Voltage High
V_IH
V_CSN = V_IN, increase DIM until V_DRV >
(V_CC - 0.5V)
2.8
V
DIM Input-Voltage Low
DIM Hysteresis
V_IL
DIM_HYS
V_CSN = V_IN, decrease DIM until
V_DRV < 0.5V
0.6
V
200
mV
DIM Turn-On Time
t_DIMON
DIM rising edge to V_DRV = 0.5 x V_CC,
C_DRV = 1nF
100
ns
DIM Turn-Off Time
DIM Input Leakage High
DIM Input Leakage Low
V_CC REGULATOR
Regulator Output Voltage
Load Regulation
Line Regulation
Power-Supply Rejection Ratio
Current Limit
Regulator Startup Time
t_DIMOFF
DIM falling edge to V_DRV = 0.5 x V_CC,
C_DRV = 1nF
V_DIM = V_IN
V_DIM = 0V
V_CC
PSRR
I_LIM
t_STRAT
I_VCC = 0.1mA to 10mA, V_IN = 5.5V to 28V
I_VCC = 0.1mA to 10mA, V_IN = 4.5V to 28V
I_VCC = 0.1mA to 10mA, V_IN = 12V
V_IN = 6V to 28V, I_VCC = 10mA
V_IN = 12V, I_VCC = 5mA, f_IN = 10kHz
V_IN = 4.5V, V_CC = 0V
V_IN = 4.5V, V_CC = 4V
V_CC = 0 to 4.5V
100
ns
10
µA
-1
+1
µA
4.5
5.5
V
4.0
5.5
V
4
Ω
11
mV
-35
dB
45
mA
18
mA
350
µs
Note 1: All devices are 100% production tested at T_J = +25°C and +125°C. Limits to -40°C are guaranteed by design.
_______________________________________________________________________________________ 3