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MAX16834ATP+ Datasheet(PDF) 2 Page - Maxim Integrated Products |
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MAX16834ATP+ Datasheet(HTML) 2 Page - Maxim Integrated Products |
2 / 23 page High-Power LED Driver with Integrated High-Side LED Current Sense and PWM Dimming MOSFET Driver 2 _______________________________________________________________________________________ ABSOLUTE MAXIMUM RATINGS ELECTRICAL CHARACTERISTICS (VIN = VHV = 12V, VUVEN = 5V, VLV = VPWMDIM = SGND, CVCC = 4.7µF, CLCV = 100nF, CREF = 100nF, RSENSE+ = 0.1Ω, RRT = 10kΩ, 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, HV, LV to SGND................................................-0.3V to +30V OVP+, SENSE+, DIMOUT, CLV to SGND ..............-0.3V to +30V SENSE+ to LV........................................................-0.3V to +0.3V HV, IN to LV ............................................................-0.3V to +30V OVP+, CLV, DIMOUT to LV ......................................-0.3V to +6V PGND to SGND .....................................................-0.3V to +0.3V VCC to SGND..........................................................-0.3V to +12V NDRV to PGND...........................................-0.3V to (VCC + 0.3V) All Other Pins to SGND.............................................-0.3V to +6V NDRV Continuous Current................................................±50mA DIMOUT Continuous Current..............................................±2mA VCC Short-Circuit Current to SGND Duration ...........................1s Continuous Power Dissipation (TA = +70°C) 20-Pin TQFN (4mm x 4mm) (derate 25.6mW/°C* above +70°C) ............................2051mW 20-Pin TSSOP-EP (derate 26.5mW/°C above +70°C) ....2122mW Junction-to-Ambient Thermal Resistance ( θJA) (Note 1) 20-Pin TQFN 4mm x 4mm .................................................39°C/W 20-Pin TSSOP..................................................................37.7°C/W Junction-to-Case Thermal Resistance ( θJC) (Note 1) 20-Pin TQFN 4mm x 4mm ...............................................6°C/W 20-Pin TSSOP..................................................................2°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 * As per JEDEC51 standard (multilayer board). PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Input Voltage Range VIN 4.75 28 V Quiescent Supply Current IQ Excluding ILED 610 mA Shutdown Supply Current ISHDN VUVEN = 0 30 60 µA INTERNAL LINEAR REGULATOR (VCC) Output Voltage VCC 0 ≤ ICC ≤ 50mA, 9.5V ≤ VIN ≤ 28V 6.3 7 7.7 V Dropout Voltage VDO ICC = 35mA (Note 2) 0.65 1 V Short-Circuit Current VCC = 0, VIN = 12V 80 300 mA LINEAR REGULATOR (CLV) Output Voltage (VCLV - VLV) 0 ≤ ICLV ≤ 2mA, 6V ≤ VHV ≤ 28V, 6V ≤ V(HV-LV) ≤ 22V 4.7 5 5.3 V Dropout Voltage VDO ICLV = 2mA, 0 ≤ VLV ≤ 23.3V (Note 3) 0.5 V Short-Circuit Current VCLV = 12V, VIN = 12V, VHV = 24V 2.2 10 mA REFERENCE VOLTAGE (REF) Output Voltage VREF 0 ≤ IREF ≤ 1mA, 4.75V ≤ VIN ≤ 28V 3.625 3.70 3.775 V REF Short-Circuit Current VREF = 0 30 mA UNDERVOLTAGE LOCKOUT/ENABLE INPUT (UVEN) UVEN On Threshold Voltage VUVEN_THUP 1.395 1.435 1.475 V UVEN Threshold Voltage Hysteresis 200 mV Input Leakage Current ILEAK VUVEN = 0 I1I µA PWMDIM PWMDIM On Threshold Voltage VPWMDIM 1.395 1.435 1.475 V PWMDIM Threshold Voltage Hysteresis 200 mV |
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