MAX16956 36V, 300mA, Mini Buck Converter with 1.1µA IQ Absolute Maximum Ratings (Voltages Referenced to PGND) Continuous Power Dissipation (TA = +70°C) SUP ...-0.3V to +42V (derate 12.9mW/ºC above +70°C) ..1031mW EN.. -0.3V to VSUP + 0.3V Operating Temperature Range ... -40°C to +125°C BST to LX ..+6V Junction Temperature ..+150°C BST... ...-0.3V to +47V Storage Temperature Range .. -65°C to +150°C MODE, OUT/FB, RESET... ..-0.3V to VBIAS + 0.3V AGND.. ...-0.3V to +0.3V Lead Temperature (soldering, 10s) ...300°C BIAS.. ...-0.3V to +6.0V Soldering Temperature (reflow) ... +260ºC OUT/FB Short-Circuit Duration..Continuous Package Thermal Characteristics(Note 1) µMAX Junction-to-Ambient Thermal Resistance (BJA)... 77.6°C/W Junction-to-Case Thermal Resistance (BJC) .. 5°C/W 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.maximintegrated.com/thermal-tutorial . Electrical Characteristics (VSUP = VEN = 14V, VMODE = 0V, TA = TJ = -40°C to +125°C, unless otherwise noted. Typical values are at TA = +25°C, unless otherwise noted.) (Note 2) PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS Supply Voltage VSUP 3.5 36 V Supply Voltage VSUP T < 500ms (Note 3) 42 V VEN = 0V 0.75 3.0 No load, fixed 3.3V VOUT 1.1 3.0 µA Supply Current I No load, fixed 5V VOUT 1.8 5.0 SUP No load, adjustable VOUT 32 70 VMODE = VBIAS , no load, FPWM, no switching 0.5 1 1.5 mA V UV Lockout BIAS rising 3.0 3.2 3.4 V Hysteresis 0.4 BIAS Regulator Voltage VBIAS VSUP = 5.5V to 36V (MAX16956C/F only) 5 V BIAS Current Limit 10 mA BUCK CONVERTER VOUT,5V VOUT = 5V 6V ≤ VSUP ≤ 4.9 5.0 5.2 Voltage Accuracy 36V, ILOAD = 0 to V VOUT,3.3V VOUT = 3.3V 300mA 3.2 3.3 3.4 Output Voltage Range VOUT Adjustable output versions 1 10 V FB Voltage Accuracy VFB Adjustable output versions, 6V ≤ VSUP ≤ 36V 0.98 1.0 1.03 V FB Input Current IFB VFB = 1V 0.02 µA FB Load Regulation ΔVLOAD ILOAD = 0.3mA to 300mA 1 % www.maximintegrated.com Maxim Integrated │ 2
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