Rainbow-electronics MAX16832C Uživatelský manuál stáhnout pdf (Strana 2)

MAX16832A/MAX16832C

2MHz, High-Brightness LED Drivers with

Integrated MOSFET and High-Side Current Sense

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= +24V, V

DIM

= V

, T

= T

= -40°C to +125°C, unless otherwise noted. Typical values are at T

= +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 (T

= +70°C)

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

Junction-to-Ambient Thermal Resistance (θ

) (Note 1) .....43°C/W

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......................................................±2.5kV

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Input Voltage Range V

6.5 65 V

Ground Current No switching 1.5 mA

Supply Current V

DIM

< 0.6V, V

= 12V 350 µA

UNDERVOLTAGE LOCKOUT (UVLO)

= V

- 100mV, V

rising until V

0.5V

6.25 6.5

Undervoltage Lockout UVLO

= V

- 100mV, V

falling until V

0.5V

6.0

Undervoltage-Lockout Hysteresis 0.5 V

SENSE COMPARATOR

MAX16832A, V

- V

rising from 140mV

until V

> 0.5V

, V

DIM

= 5V

201 210 216

Sense Voltage Threshold High V

SNSHI

MAX16832C, V

- V

rising from 140mV

until V

> 0.5V

, V

DIM

= 5V

218 230 236

MAX16832A, V

- V

falling from 260mV

until V

< 0.5V

, V

DIM

= 5V

185 190 198

Sense Voltage Threshold Low V

SNSLO

MAX16832C, V

- V

falling from 260mV

until V

< 0.5V

, V

DIM

= 5V

166 170 180

Propagation Delay to Output High t

DPDH

Falling edge of V

- V

from 140mV to

260mV to V

= 0.5V

50 ns

Propagation Delay to Output Low t

DPDL

Rising edge of V

- V

from 260mV to

140mV to V

< 0.5V

50 ns

CS Input Current I

CSIN

- V

= 200mV, V

= V

3.5 µA

INTERNAL MOSFET

= V

DIM

= 24V, V

= 23.9V,

= 700mA

0.45 0.9

Drain-to-Source Resistance R

DSON

= V

DIM

= 6.0V, V

= 5.9V,

= 700mA

LX Leakage Current I

LX_LEAK

DIM

= 0V, V

= 65V 10 µA

1 2 3 4 5 6 7 8 9

MAX16832A/MAX16832C 1

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