DatasheetsPDF.com

AME5131 Dataheets PDF



Part Number AME5131
Manufacturers Analog Microelectronics
Logo Analog Microelectronics
Description Low Power DC/DC Boost Converter
Datasheet AME5131 DatasheetAME5131 Datasheet (PDF)

www.DataSheet4U.com AME, Inc. AME5131 n General Description The AME5131 is a high-frequency boost converter dedicated for LCD bias supply and white LED applications for cellular phone backlighting, PDAs, and other hand-held devices. The part can also be used to generate standard 3.3 V/5 V to 12 V power conversions. The AME5131 has an internal 400mA switch current limit, offering lower output voltage ripple. The 32µA low quiescent current together with an optimized control scheme, allows device .

  AME5131   AME5131


Document
www.DataSheet4U.com AME, Inc. AME5131 n General Description The AME5131 is a high-frequency boost converter dedicated for LCD bias supply and white LED applications for cellular phone backlighting, PDAs, and other hand-held devices. The part can also be used to generate standard 3.3 V/5 V to 12 V power conversions. The AME5131 has an internal 400mA switch current limit, offering lower output voltage ripple. The 32µA low quiescent current together with an optimized control scheme, allows device operation at high efficiencies and maintains long battery lifetime. AME5131 uses SOT-25 package and gives a small size solution. Low Power DC/DC Boost Converter n Function Block Diagram On / Off Time Controller UVP VIN SW _ FB + Boost Controller Driver Bandgap + _ GND Soft Start Enable EN n Features l 0.6Ω Internal Switch l 1.8V to 5.5V Input Range l Adjustable Output Voltage Up to 28V l Input Under Voltage Protection l 32µA Typical No Load Quiescent Current l 1µA Shutdown Current l SOT-25 Package l All AME's Lead Free Products Meet RoHS Standards CIN 4.7£gF 4 EN VIN 1.8 V-5.5 V 5 V IN 1 R1 2.1M CFF 22PF n Typical Application L1 10£gH D1 VOUT VIN ~28 V SW AME5131 FB GND 3 2 R2 150K CO 1£gF n Applications l White LED Back-Lighting l Hand-held Devices l Digital Cameras l Portable Applications l Internet Audio Player l LCD Bias Power l Standard 3.3 V/5 V to 12 V Conversions 1 AME, Inc. AME5131 n Pin Configuration SOT-25 Top View 5 4 Low Power DC/DC Boost Converter AME5131AEEV 1. SW 2. GND AME5131 3. FB 4. EN 5. VIN * Die Attach: Conductive Epoxy 1 2 3 n Pin Description Pin Number 1 2 3 4 5 Pin Name SW GND FB EN VIN Pin Description This is the switch pin and is connected to the drain of the internal NMOS power switch. Minimize the metal trace area connected to this pin to minimize EMI. Ground Pin. Feedback Input Pin. Connect this pin to the external voltage divider to program the desired output voltage. Enable Control Input Pin. (Active High) Input Supply Pin. Place bypass capacitor as close to VIN as possible. 2 AME, Inc. AME5131 n Ordering Information AME5131 x x x x xxx x Special Feature Output Voltage Number of Pins Package Type Operating Ambient Temperature Range Pin Configuration Low Power DC/DC Boost Converter Pin Configuration A (SOT-25) Operating Ambient Package Type Temperature Range E: -40OC to +85OC E: SOT-2X Number of Pins V: 5 Output Voltage Special Feature 1. SW 2. GND 3. FB 4. EN 5. VIN ADJ: Adjustable Z: Lead free n Ordering Information Part Number AME5131AEEVADJZ Marking* BEFww Output Voltage ADJ Package SOT-25 Operating Ambient Temperture Range -40OC to +85OC Note: ww represents the date code and pls refer to Date Code Rule page on Package Dimension. * A line on top of the first letter represents lead free plating such as BEFww. Please consult AME sales office or authorized Rep./Distributor for the availability of package type. 3 AME, Inc. AME5131 n Absolute Maximum Ratings Parameter Input Supply Voltage EN, FB Voltages SW Voltage ESD Classification Low Power DC/DC Boost Converter Symbol VIN VEN , VFB VSW Maximum 6 VIN 30 C* Unit V Caution: Stree above the listed absolute maximum rating may cause permanent damage to the device. HBM C: 4000V+ n Recommended Operating Conditions Parameter Ambient Temperature Range Junction Temperature Range Symbol TA TJ Rating -40 to +85 -40 to +125 Unit O C n Thermal Information Parameter Thermal Resistance* (Junction to Case) Thermal Resistance (Junction to Ambient) Internal Power Dissipation Maximum Junction Temperature Solder Iron (10 Sec)** SOT-25 Conductive Epoxy Package Die Attach Symbol θJC θJA PD Maximum 81 Unit o C/W 260 o C/W mW o 400 150 350 C C o * Measure θJC on center of molding compound if IC has no tab. ** MIL-STD-202G210F 4 AME, Inc. AME5131 n Electrical Specifications VIN = 2.4V, EN = VIN, TA = -40oC to 85oC, typical values are at TA = 25oC Parameter Input Voltage Quiescent Current Shutdown Current FB Pin Bias Current Feedback Trip Point UVP Voltage Switch Current Limit Switch RDSON SW leakage current Switch Off Time Switch On Time EN Input Current EN Input Threshold (High) EN Input Threshold (Low) Line Regulation Load Regulation Symbol VIN IQ ISD IFB VFB UVP ICL RDSON ISW t OFF t ON IEN VEH VEL REGLINE REGLOAD EN = GND or VIN Device Active Device Shutdown 1.8¡ØVIN ¡Ø 5.5V; VOUT =18V; ILOAD =10mA; Cff = not connected VIN =2.4V; VOUT =18V; 0mA¡ØIOUT¡Ø30mA 0.3 0.15 1.3 0.4 VOUT = 18V, IOUT = 10mA, TA=25oC VIN = 2.4V; ISW = 200mA VSW = 28V 350 IOUT = 0mA, not switching, VFB = 1.3V EN = GND VFB = 1.3V 1.8V ¡Ø VIN ¡Ø 5.5V 1.187 Test Condition Min 1.8 32 0.1 Typ Max 5.5 50 1 1 1.212 1.237 1.5 400 0.6 1 400 6 0.1 1 1.7 450 1 10 V V mA Ω µA ns µs µA V V %/V %/mA µA Units V Low Power DC/DC Boost Converter 5 AME, Inc. AME5131 n Detailed Description Operation The AME5131 is a boost converter with a smart control scheme that operates in a pulse frequency modulation (PFM) with constant peak.


AME5130 AME5131 AME5136


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)