MAX16822A_10 Datasheet, PDF (2/10 Pages) Maxim Integrated Products – 2MHz, High-Brightness LED Drivers with Integrated MOSFET and High-Side Current Sense

2MHz, High-Brightness LED Drivers with
Integrated MOSFET and High-Side Current Sense
ABSOLUTE MAXIMUM RATINGS
IN, CS, LX, DIM to GND .........................................-0.3V to +70V
TEMP_I to GND .......................................................-0.3V to +6V
PGND to GND ......................................................-0.3V to +0.3V
CS to IN .................................................................-0.3V to +0.3V
Maximum Current into Any Pin
(except IN, LX, and PGND).............................................20mA
Continuous Power Dissipation (T_A = +70°C)
8-Pin SO (derate 7.4mW/°C above +70°C)...............588.2mW
Junction-to-Ambient Thermal Resistance (θ_JA) (Note 1) ...136°C/W
Pin-to-Pin ESD Ratings......................................................±2.5kV
Operating Temperature Range
350mA (max) Output Current ........................-40°C to +125°C
500mA (max) Output Current ........................-40°C to +105°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, see www.maxim-ic.com/thermal-tutorial.
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 = +24V, V_DIM = V_IN, T_A = T_J = -40°C to +125°C, unless otherwise noted. Typical values are at T_A = +25°C.)
PARAMETER
SYMBOL
Input-Voltage Range
V_IN
Ground Current
Supply Current
UNDERVOLTAGE LOCKOUT (UVLO)
CONDITIONS
No switching
V_DIM < 0.6V, V_IN = 12V
MIN TYP
6.5
1.5
350
Undervoltage Lockout
Undervoltage-Lockout Hysteresis
SENSE COMPARATOR
UVLO
V_CS = V_IN - 100mV, V_IN rising from 4V
until V_LX < 0.5V_IN
V_CS = V_IN - 100mV, V_IN falling from 6.5V
until V_LX > 0.5V_IN
6.25
0.5
Sense Voltage Threshold High
MAX16822A, (V_IN - V_CS) rising from
201 210
140mV until V_LX > 0.5V_IN
V_SNSHI
MAX16822B, V_IN - V_CS rising from 140mV ₂₁₈
230
until V_LX > 0.5V_IN
Sense Voltage Threshold Low
V_SNSLO
MAX16822A, V_IN - V_CS falling from
260mV until V_LX < 0.5V_IN
MAX16822B, V_IN - V_CS falling from
260mV until V_LX < 0.5V_IN
185 190
166 170
Propagation Delay to Output High
t_DPDH
Falling edge of V_IN - V_CS from 140mV to
260mV to V_LX = 0.5V_IN
50
Propagation Delay to Output Low
t_DPDL
Rising edge of V_CS - V_IN from 260mV to
140mV to V_LX < 0.5V_IN
50
CS Input Current
I_CSIN
V_IN - V_CS = 200mV
MAX
65
6.5
6
216
236
198
180
3.5
UNITS
V
mA
μA
V
V
mV
mV
ns
ns
μA
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