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MAX16834 Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX16834 Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 23 page High-Power LED Driver with Integrated High-Side LED Current Sense and PWM Dimming MOSFET Driver 4 _______________________________________________________________________________________ ELECTRICAL CHARACTERISTICS (continued) (VIN = VHV = 12V, VUVEN = 5V, VLV = VPWMDIM = VSGND, 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.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Minimum On-Time tON(MIN) On-time includes blanking time 100 ns Duty Cycle (Note 4) 90 99.5 % CURRENT PEAK LIMIT COMPARATOR Trip Threshold Voltage 0.25 0.3 0.35 V Propagation Delay 50mV overdrive with respect to NDRV 40 ns OVERVOLTAGE PROTECTION INPUT (OVP+) OVP+ On Threshold Voltage VOVP_ON 1.375 1.435 1.495 V OVP+ Hysteresis 200 mV OVP+ Input Leakage Current (VOVP - VLV) = 1.235V -1 +1 µA HIGH-SIDE LED SHORT COMPARATOR Off Threshold VCLV - VLV 4.0 4.3 4.6 V On Threshold VCLV - VLV 4.1 4.4 4.7 V Error Reject Blankout fOSC = 500kHz 256 µs LOW-SIDE LED SHORT COMPARATOR Off Threshold 0.27 0.30 0.33 V Error Reject Blankout 5µs HICCUP TIMER Hiccup Time fOSC = 500kHz 8.2 ms GATE-DRIVER OUTPUT (NDRV) NDRV Peak Pullup Current VCC = 7V 3 A NDRV Peak Pulldown Current VCC = 7V 3 A p-Channel MOSFET RDSON (VCC - VNDRV) = 0.1V 1.2 1.9 Ω n-Channel MOSFET RDSON VNDRV = 0.1V 0.9 1.7 Ω DIMOUT DIMOUT Peak Pullup Current (VCLV - VLV) = 5V 25 50 mA DIMOUT Peak Pulldown Current (VCLV - VLV) = 5V 25 50 mA p-Channel MOSFET RDSON (VCLV - VDIMOUT) = 0.1V 31 Ω n-Channel MOSFET RDSON (VDIMOUT - VLV) = 0.1V 25 Ω PWMDIM to DIMOUT Propagation Delay 200 ns FAULT FLAG ( FLT) FLT Pulldown Current VFLT = 0.2V 2 5 10 mA FLT Leakage Current VFLT = 1.0V I1I µA Thermal Warning On Threshold +140 °C Thermal Warning Threshold Hysteresis 20 °C Note 2: Dropout voltage is defined as VIN - VCC, when VCC is 100mV below the value of VCC for VIN = 9.5V. Note 3: Dropout is defined as VHV - VCLV, when VCLV is 100mV below the value of VCLV for VHV = 8V. Note 4: Not production tested. Guaranteed by design. |
Similar Part No. - MAX16834_10 |
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Similar Description - MAX16834_10 |
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