MAXL001 MAXIM | Alldatasheet
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100,.H Toroid Inductor ____ General Description - Features 2 The MAXLOO1 is a 100yH inductor designed as the main @ Low Electromagnetic Interference magnetic component for simple flyback DC-DC convert- @ Toroid Construction ers with up to SW output. Quieter than bobbin inductors and less costly than Molypermalloy Powder (MPP) or Low-Cost, Iron-Powder Core E pot-core inductors, the MAXLOO1 is ideal for distributed @ 200kHz Operation power supplies and portable equipment. The MAXLO01 @ 1.75A Saturation Current 8 core material is an iron-powder compound selected for good circuit efficiency at switching frequencies up to 9-088 DC Resistance ~ 200kHz. The MAXLO01 has radial leads for Printed-Cir- cuit (PC) board mounting. __—CCAppptications =§___ Ordering Information Switching Regulators PART —=STEMP.RANGE = VALUE | DC-DC Converters MAXLO01 55°C to +105°C 100uH #15% Power Supplies OC Filters Physical Characteristics _____ MAXL001 PC-Mount Toroid 7 085 033 0.65" (16.5" Nominal Diameter PES at Veli __ Seer nom _Bacenom [wan | 0.33" (8.4mm) Nominal | 0.375' (9.5mm) Max 4 Lead Length 0.375" (9.5mm) Min 26 AWG. ») 2427 orEauvaer Finish Saturated with Varnish 7 . fase) MIN | MAXIM SSS Maxi integrated Products 1 AAAXIAA is a registered trademark of Maxim Integrated Products.
100,.H Toroid Inductor ‘w= ABSOLUTE MAXIMUM RATINGS 3 Peak Current ..0000..cccceccscceseeesssseessssses, SA Operating Temperature Range -$5°C to +108°C DCCurrent 2200222 IIL1.5A Storage Temperature Range... 1) 85°C to +105°6 ‘Stresses beyond those listed under Absolute Maximum Re ‘permanent dame the inductor. The ratings only, and functic 5 Sera ase condiions not mpl. expose to absokie Mania rang conetons lorextanded parcds may afect dove relaoinyy = ELECTRICAL CHARACTERISTICS (Ta = +25°C, Note 1.) PARAMETERS CONDITIONS MIN Typ max =| UNITS F=100kHz, eo V=0.1VAMs hae ” Note 1: Maxim sample tests these parameters to LTPD = 10. Flyback Inductors for DC-DC Converters [step ur |wverTING| Sam (voto | DUAL. While designed specifically for the MAX743 dual-output VOLTAGE | OUTPUT current-mode +5V to +15V or +12V converter (Figure 1), MAX630 | MAX634 MAX638 | MAX654 | MAX742 the MAXLOO1 works well for many low-power DC-DC MAX631 | ~MAX635 MAX655 | MAX743 converter applications. The 100uH value is fairly low, so | axeg2 | MAXe36 MAX6S6 caution must be exercised when connecting the MAXLO01 to ICs other than the MAX743; calculate the | MAX633_ | MAX637 MAX657 worst-case peak inductor current using equations from MAX4193 | MAX4391 MAX658 the data sheet to be sure the power-transistor ratings are | maxeai MAX659 notexceeded. The MAXLOO1 works well for the following | syaxeao list of products, especially if the supply voltage is 10V or less. MAX643
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100,H Toroid Inductor $matiier inductors: MPP and Pot Core F “ “Yano” | If Gost is not important, consider a MPP toroid inductor such as the 51-559 from Gowanda Electronics, or a woot miniature surface-mount pot core such as the 41840 from {Ou Pico Electronics. Both are much smaller than the [jm ce us MAXLO01 and have nearly equal energy storage capabil- co) wd, | 3 Dis OWE Gowanda Electronics, Gowanda, NY (716) 532-2234 = Ne GND ro Pico Electronics, Mt. Vernon, NY (914) 699-5514 [| ananaaa 1 ware ve whiten oy, 44 36 I ss & , co i = O01 cial wot “T Figure 1, Example Application for MAXL001 (Dual-Output Switching Regulater) MAAXIAA