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MAX5088ATE+ Datasheet(PDF) 3 Page - Maxim Integrated Products |
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MAX5088ATE+ Datasheet(HTML) 3 Page - Maxim Integrated Products |
3 / 24 page 2.2MHz, 2A Buck Converters with an Integrated High-Side Switch _______________________________________________________________________________________ 3 ELECTRICAL CHARACTERISTICS (continued) (V+ = VL = 5V or V+ = 5.5V to 23V, VEN = 5V, TA = TJ = -40°C to +125°C, unless otherwise noted. Circuits of Figures 5 and 6. Typical values are at TA = TJ = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SOFT-START Digital Soft-Start Period Internal 6-bit DAC 4096 Clock periods Soft-Start Steps 64 Steps ERROR AMPLIFIER (FB and COMP) FB to COMP Transconductance gM 1.20 1.8 2.75 mS FB Input Bias Current IFB 250 nA FB Input Voltage Set Point VFB 0.5940 0.601 0.6095 V COMP Sink-and-Source Current Capability ICOMP 100 150 µA INTERNAL MOSFETs On-Resistance n-Channel Power MOSFET RON V+ = VL = 5.2V, ISINK = 100mA 0.150 0.302 Ω Leakage Current ILEAK VEN = 0V, VDRAIN = 23V, SOURCE = PGND 20 µA Minimum Output Current IOUT VOUT = 3.3V, V+ = 12V (Note 2) 2 A Current Limit ILIMIT 2.2 2.8 3.5 A On-Resistance Internal Low-Side Switch RONLSW ISWITCH = 50mA, V+ = VL = 5.2V 20 38 Ω SYNCHRONOUS RECTIFIER DRIVER (DL) (MAX5089 Only) On-Resistance nMOS RONDLN ISINK = 0.1A 1 6.7 Ω On-Resistance pMOS RONDLP ISOURCE = 0.1A 1.9 11.1 Ω Peak Sink Current IIDL_SINK 1A Peak Source Current IIDL_SOURCE 0.75 A OSCILLATOR (OSC)/SYNCHRONIZATION (SYNC)/CLOCK OUTPUT (CKO) (MAX5088 Only) Clock Output-High Level VCKOH VL = 5.2V, ISOURCE = 5mA 3.54 V Clock Output-Low Level VCKOL VL = 5.2V, ISINK = 5mA 0.4 V ROSC = 5.62k Ω 1900 2100 2400 ROSC = 41.2k Ω 275 312 350 Switching Frequency fSW V+ = VL = 5.2V ROSC = 10k Ω 1130 1250 1380 kHz Minimum Controllable On-Time tON_MIN 120 ns MAX5088 82 87.5 Maximum Duty Cycle DMAX fSW = 2.2MHz MAX5089 82 87.5 % |
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