Datasheet l79 negative voltage regulators stmicroelectronics. A designers guide to the l200 voltage regulator delivering 2 a at a voltage variable from 2. Refer to the test circuits, tj 0 to 125 c, vi 10 v, io 500 ma. Page 4 of 9 electrical characteristics ta25 c, io0. The max1735 negativeoutput, lowdropout linear regulator operates from a 2. If r2 is varied, the voltage at pin 2 is varied and so is the output voltage. It provides constant voltage power source with to2204 lead full. It discusses a 3 to 5v, 50ma cmos low dropout linear voltage regulator with a single compensation capacitor of 1pf. Post regulator for switching supplies designed also for vehicular applications, the lm2940n and lm2940c and all regulated circuitry are logic power supplies protected from reverse battery installations or 2 industrial instrumentation battery jumps. Standard variable output ldo regulators 2a standard. Ldo voltage regulators 150ma lonoise ldo regulator enlarge. The regulator nominal output 5v is located on the center line of the.
Low dropout voltage regulator general description package outline the njm2837 is a 1a output low dropout voltage regulator. Sot23 voltage regulator 10v pt7m8201 regulator sot89 sot89 24 ldo. Max1735 200ma, negativeoutput, lowdropout linear regulator. Ldo regulator case style output current output type linear regulator case style no. The device supplies 1a output current with 145mv typical dropout voltage. Highside switch using ldo regulator controller by jerry kmetz general description the micrel mic5158 super ldo voltage regulator controller can be used as a highside switch driver that features a relatively accurate current limit.
The regulator is protected against reverse battery, short circuit, and thermal overload. Advanced bipolar technology achieves low noise, high ripple rejection and low quiescent current. Sot23 voltage regulator 10v datasheet, cross reference, circuit and application notes in pdf format. Lm317d lm317, ncv317 voltage regulator adjustable output, positive 1. A in operation, and is designed for use with low esr ceramic capacitors. The lt1086 offers excellent line and load regulation speci fications and ripple rejection. For output voltage other than 5v, 12v and 15v the lm117. Design of a low voltage,low dropout ldo voltage cmos. Linear regulator application information ic product name bd00ic0wefj bd00ic0whfv topology ldo. This design guide describes the operation of the device and its applications. Linear regulator application information ic product name bd00d0awhfp topology ldo linear regulator type voltage source input output 1 4. Ldo and boost preregulator offers the advantage of using a single offtheshelf inductor in place of the multiplewinding custom magnetics needed in typical singleended primary inductor converter sepic and transformerbased flyback topologies. Ground pin current is the regulator quiescent current. Lm2940x 1a low dropout regulator 1 features 3 description the lm2940n and lm2940c positive voltage 1 input voltage range 6 v to 26 v regulators feature the ability to source 1 a of output dropout voltage typically 0.
Designing with lowdropout voltage regulators bob wolbert applications engineering manager micrel semiconductor. Design and simulation of a ldo voltage regulator bernhard weller abstractthis paper gives a short introduction into basic linear voltage regulator operation, and focuses then on lowdropout ldo regulators and the main pitfall in application. Low dropout voltage regulator general description package outline the njm2819a is a low dropout voltage regulator with onoff control. These highperformance ldo regulators are configured by combining dmosfet power circuits, low power cmosfet circuits, and highaccuracy bipolar circuits together with processes optimized for each circuit block. Low power 10v, 200ma ldo voltage regulator xc62fj torex. It provides constant voltage power source with to2204 lead full mold package. Sii semiconductor corporation, a subsidiary of seiko instruments inc. In this paper a low voltage, low dropout ldo voltage regulator design procedure is proposed and implemented using 0. A low dropout positive voltage regulator features the ability to source 1a of output current with a dropout voltage of typically 10v and a maximum of. Linear regulator application information ic product name bd00ga3wefj topology ldo linear regulator type voltage source input output 1 4.
The output voltage of the variable output voltage device can be varied from 0. This voltage regulator is exceptionally easy to use and requires only two external resistors to set the output voltage. Standard variable output ldo regulators 2a standard variable. The output voltage can be arbitrarily configured depending on the external resistor combination. Low power 10v, 200ma ldo voltage regulator xc62fj torex usa. Buy your baj0cc0fpe2 from an authorized rohm distributor. Automotive voltage regulators ldo regulators ablic inc. Browse over 30,000 products, including electronic components, computer products, electronic kits and projects, robotics, power supplies and more. Although designed primarily as fixed voltage regulators, these devices can. The output voltage can be arbitrarily configured using the external resistance.
Standard variable output ldo regulators 2a standard variable output ldo regulator bd00d0awhfp description the bd00d0awhfp is lowsaturation regulator. It discusses a 3 to 5v, 50ma cmos low dropout linear voltage regulator with a single compensation capacitor of. Xtr70020 is a family of hightemperature, highinput voltage, 2amp ultra low dropout voltage regulators designed for extreme reliability high voltage and high temperature applications. Ripple rejection vout 10v, f 120hz cadj 0f cadj 10f l l 60 60 75 60 60 75 db db iadj adjust pin current l 45 100 45 100 a. The ssop5 package can contribute to the downsizing of the set. Using an external pfet, ultrasmallvssop8package the lp2975 will deliver an ultra low dropout regulator.
Micrel semiconductor designing with ldo regulators designing with ldo regulators 2 micrel, the high performance analog power ic company micrel semiconductor designs, develops. Hightemperature, high input voltage, 2a positive ldo regulator. Recent listings manufacturer directory get instant insight into any. Sii semiconductor corporation provides multiple options for automotive ldo voltage regulators with 10v input with 1a and 0. Regulator the typical configuration used by the device as a voltage regulator with external current limitation is shown in fig. For your security, you are about to be logged out 60 seconds. The lt 1038 is a three terminal regulator which is capable of providing in excess of 10a output current over 1.
Our ldo regulators contribute to the low power, stable operation and high reliability of power supply circuits. A quiescent current lowdropoutlinear regulator in sc70 or son 2x2 1features description the tps714xx lowdropoutldo voltage regulators 2 wide input voltage range. Furthermore, a quiescent current reduction circuit has been included which reduces the. Active high or low can be selected for the ence logic with or without a builtin pull updown resistor. Jameco sells linear 10v regulator and more with a lifetime guarantee and same day shipping. Hightemperature, high input voltage, 2a positive ldo. Ldo regulator bdxxfa1mgm general description bdxxfa1mgm is an ldo regulator with output current capability of 0. Designing with lowdropout voltage regulators microchip. If r1 were connected to the load, the effective resistance between the. The highaccuracy 1% output voltage is preset or can be adjusted from 1. Obsolete product data sheet for reference only regulator. Competitive prices from the leading 10v ldo voltage regulators distributor. Lp2975 1features description a highcurrentldo regulator is simple to design with 2 simple to use, few external components the lp2975 ldo controller. Spx29302a 3a high current, low dropout voltage regulator.
If r1 were connected to the load, the effective resistance between the regulator and the load would be. The part is normally intended for driving the mosfet pass device of a voltage regulator. Ldo regulator bd00hc0wefj general description bd00hc0wefj is a ldo regulator with output current 1. Sii semiconductor corporation provides multiple options for.
The lt3022 is a very low dropout voltage vldo linear regulator that operates from single input supplies down to 0. The total current drawn from the source is the sum of the load current to the ground current. A simulation utilizing ltspice is performed to analyze the stability of the closed feedback loop. Also, the lt1038 is a functional replacement for the lm396. The lt3022 is ideal for low input voltage to low output voltage applications, providing comparable electrical efficiency to a switching regulator. Ldo linear regulator rohm count reference designator type. As protective function to prevent ic from destruction, this chip has builtin over. All 3 series, featuring rated inputs of 7 v, 10v, or 15 v, are produced utilizing the best process rules for each voltage. Low power 10v, 200ma ldo voltage regulator xc62fj torex europe. Lt1033 3a negative adjustable regulator analog devices. Capable of handling output currents of 200ma with low dropout performance, the xc62fj is ideal for a wide range of applications. Hightemperature, high input voltage, 2a positive ldo regulator ds0059314 rev2j 20180412 1 of 14. Pdf pd943 iru1205 iru120525 iru120528 iru120530 iru120533 iru120536 300ma ot23 270mv sot23 voltage regulator 10v iru120528cl iru120528 iru120525cl iru1205cl iru120536.
The ka278rxxc is a lowdropout voltage regulator suitable for various electronic equipments. The device is packaged in a standard t03 power package and is plugin compatible with industry standard adjustable regulators, such as the lm117 and lm8. Voltage regulators ldo regulators ablics voltage regulators ldo regulators feature the low current consumption, highwithstand voltage, wide operating voltage range, supersmall packages, and high ripple rejection ratio. Ldo voltage regulators datasheet texas instruments.
Lm78d25 lm78d15 1a ultra low dropout voltage regulator. This ic has a builtin overcurrent protection circuit that prevents the. From the iv characteristics curve above, we can see that the zener diode has a region in its reverse bias characteristics of almost a constant negative voltage regardless of the value of the current flowing through the diode. It delivers up to 7v2a output power with the maximum input voltage of 10v. The load resistor is connected to the regulator output using a switch so that the load current increases from 0 to 5a abruptly. The voltage monitor output can detect high or low and can be set to monitor vin,vout or. The zener diode is used in its reverse bias or reverse breakdown mode, i.
The change in output voltage is shown in the scope photo below the vertical scale is 200 mvdivision and the horizontal scale is 10 sdivision. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range. This ic has a builtin overcurrent protection circuit that prevents the destruction of the ic due to output short. Connect to vin to enable the circuit or to gnd to disable it. Lm2940lm2940c 1a low dropout regulator general description the lm2940lm2940c positive voltage regulator features the ability to source 1a of output current with a dropout voltage of typically 0. They are used to provide a stabilized output voltage from a fluctuating dc input voltage. A low dropout positive voltage regulator features the ability to source 1a of output current with a dropout voltage of typically 10v and a maximum of 1v over the entire temperature range. Linear voltage regulator, 7805, fixed, positive voltage, 10v to 35v in, 5v and 0. Designing with lowdropout voltage regulators bob wolbert applications engineering manager micrel semiconductor 1849 fortune drive san jose, ca 951 phone. A quiescent current lowdropoutlinear regulator in sc70 or son 2x2 1features description the tps714xx lowdropout ldo voltage regulators 2 wide input voltage range. Highside switch using ldo regulator controller by jerry kmetz. The xc62fj is a 10v ldo that offers low quiescent current, only 2.
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