MAX16832A datasheet(2/10 Pages) MAXIM

2 / 10 page

2MHz, High-Brightness LED Drivers with

Integrated MOSFET and High-Side Current Sense

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VIN = +24V, VDIM = VIN, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C.)

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.

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, refer to www.maxim-ic.com/thermal-tutorial.

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 (TA = +70°C)

8-Pin SO (derate 23.3mW/°C above +70°C)...........1860.5mW

Junction-to-Ambient Thermal Resistance (

θJA) (Note 1).....43°C/W

Operating Temperature Range

700mA (max) Output Current ........................-40°C to +125°C

1A (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

Pin-to-Pin ESD Ratings......................................................±2.5kV

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Input Voltage Range

VIN

6.5

Ground Current

No switching

1.5

Supply Current

VDIM < 0.6V, VIN = 12V

350

µA

UNDERVOLTAGE LOCKOUT (UVLO)

VCS = VIN - 100mV, VIN rising until VLX <

0.5VIN

6.25

6.5

Undervoltage Lockout

UVLO

VCS = VIN - 100mV, VIN falling until VLX >

0.5VIN

6.0

Undervoltage-Lockout Hysteresis

0.5

SENSE COMPARATOR

MAX16832A, VIN - VCS rising from 140mV

until VLX > 0.5VIN, VDIM = 5V

201

210

216

Sense Voltage Threshold High

VSNSHI

MAX16832C, VIN - VCS rising from 140mV

until VLX > 0.5VIN, VDIM = 5V

218

230

236

MAX16832A, VIN - VCS falling from 260mV

until VLX < 0.5VIN , VDIM = 5V

185

190

198

Sense Voltage Threshold Low

VSNSLO

MAX16832C, VIN - VCS falling from 260mV

until VLX < 0.5VIN, VDIM = 5V

166

170

180

Propagation Delay to Output High

tDPDH

Falling edge of VIN - VCS from 140mV to

260mV to VLX > 0.5VIN

Propagation Delay to Output Low

tDPDL

Rising edge of VCS - VIN from 260mV to

140mV to VLX < 0.5VIN

CS Input Current

ICSIN

VIN - VCS = 200mV, VIN = VCS

3.5

µA

INTERNAL MOSFET

VIN = VDIM = 24V, VCS = 23.9V,

ILX = 700mA

0.45

0.9

Drain-to-Source Resistance

RDSON

VIN = VDIM = 6.0V, VCS = 5.9V,

ILX = 700mA

LX Leakage Current

ILX_LEAK

VDIM = 0V, VLX = 65V

µA

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