Datasheet

IN, CSN, DIM to GND ...........................................-0.3V to +30V
V
CC
, DRV to GND .................................................. -0.3V to +6V
CSN to IN .............................................................-0.3V to +0.3V
Maximum Current into Any Pin
(except IN, V
CC
, and DRV) ..........................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
6-Pin TDFN (derate 18.17mW/°C* above +70°C) .....1454mW
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
Pin-to-Pin ESD Ratings (HB Model)...................................2.5kV
*As per JEDEC51 Standard (Single-Layer Board).
(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
Input Voltage Range V
IN
4.5 28.0 V
Maximum Current Regulator
Switching Frequency
f
SW
2 MHz
Ground Current I
GND
DRV open 1.5 mA
Supply Current I
IN
V
DIM
< 0.6V 425 µA
Undervoltage Lockout UVLO
V
IN
= V
CSN
= V
DIM
, V
IN
rising from 4V until
V
DRV
> V
CC
- 0.5V
4.7 5.0
V
V
IN
= V
CSN
= V
DIM
, V
IN
falling from 6V,
V
DRV
< 0.5V
4.5
Undervoltage Lockout Hysteresis 0.5 V
SENSE COMPARATOR
Sense Voltage Threshold High V
SNSHI
(V
IN
- V
CSN
) rising from 0V until V
DRV
<
0.5V (MAX16820)
195 210 225
mV
(V
IN
- V
CSN
) rising from 0V until V
DRV
<
0.5V (MAX16819)
213 230 246
Sense Voltage Threshold Low V
SNSLO
(V
IN
- V
CSN
) falling from 0.26V until V
DRV
>
(V
CC
- 0.5V) (MAX16820)
176 190 204
mV
(V
IN
- V
CSN
) falling from 0.26V until V
DRV
>
(V
CC
- 0.5V) (MAX16819)
158 170 182
Propagation Delay to Output High t
DPDH
Falling edge of (V
IN
- V
CSN
) from 0.26V to
0V to DRV high, C
DRV
= 1nF
82 ns
Propagation Delay to Output Low t
DPDL
Rising edge of (V
IN
- V
CSN
) from 0V to
0.26V to DRV low, C
DRV
= 1nF
82 ns
Current-Sense Input Current I
CSN
(V
IN
- V
CSN
) = 200mV 1 µA
Current-Sense Threshold
Hysteresis
CS
HYS
MAX16819 56 70 mV
MAX16820 17 35 mV
MAX16819/MAX16820 2MHz High-Brightness LED Drivers with
High-Side Current Sense and 5000:1 Dimming
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Absolute Maximum Ratings
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