找MEMORY、二三极管上美光存储
General DescriptionThe MAX1792 low-dropout linear regulator operatesfrom a +2.5V to +5.5V supply and delivers a guaran-teed 500mA load current with low 130mV dropout. Thehigh-accuracy (±1%) output voltage is preset at aninternally trimmed voltage (see Selector Guide) or canbe adjusted from 1.25V to 5.0V with an external resis-tive divider.
An internal PMOS pass transistor allows the low 80μAsupply current to remain independent of load, makingthis device ideal for portable battery-operated equip-ment such as personal digital assistants (PDAs), cellu-lar phones, cordless phones, base stations, andnotebook computers.
Other features include an active-low open-drain resetoutput with a 4ms timeout period that indicates whenthe output is out of regulation, a 0.1μA shutdown mode,short-circuit protection, and thermal shutdown protec-tion. The device is available in a miniature 1.3W, 8-pinpower-μMAX package with a metal pad on the under-side of the package.
________________________ApplicationsNotebook Computers
Cellular and Cordless TelephonesPersonal Digital Assistants (PDAs)Palmtop ComputersBase StationsUSB HubsDocking Stations
Typical Operating Circuit VIN = +2.5V TO +5.5VINNCOUTVOUTCINC1μFINOUTOUT3.3μFMAX1792RRST100kONSHDNRSTTO OFFμCSETGNDFeaturesoGuaranteed 500mA Output CurrentoLow 130mV Dropout at 500mA
oUp to ±1% Output Voltage Accuracy
Preset at 1.5V, 1.8V, 2.5V, 3.3V, or 5.0V Adjustable from 1.25V to 5.0V
oReset Output with 4ms Timeout PeriodoLow 80μA Ground Currento0.1μA Shutdown CurrentoThermal Overload ProtectionoOutput Current Limit
oTiny 1.3W Power-μMAX Package
Ordering InformationPART*TEMP RANGE PIN-PACKAGE MAX1792EUA_ _+ -40°C to +85°C 8 Power-μMAX MAX1792EUA_ _/V+ -40°C to +85°C 8 Power-μMAX *Insert the desired two-digit suffix (see Selector Guide) into theblanks to complete the part number.+Denotes a lead(Pb)-free/RoHS-compliant package./V denotes an automotive qualified part.Contact factory for other preset output voltages.Selector GuidePART AND SUFFIXVOUTμMAX TOP MARKMAX1792EUA15+ 1.5V or Adj. AAAE MAX1792EUA18+ 1.8V or Adj. AAAA MAX1792EUA25+ 2.5V or Adj. AAAB MAX1792EUA33+ 3.3V or Adj. AAAC MAX1792EUA50+ 5.0V or Adj. AAAD MAX1792EUA33/V+ 3.3V or Adj. AACP Pin ConfigurationTOP VIEW+IN18OUTIN2MAX17927OUTRST36SETSHDN4EP5GNDPOWER-μMAX19-1699; Rev 2; 11/11MAX1792500mA Low-DropoutLinear Regulator in μMAX ABSOLUTE MAXIMUM RATINGS
IN, SHDN, RST, SET to GND....................................-0.3V to +6VOUT to GND................................................-0.3V to (VIN+ 0.3V)Output Short-Circuit Duration........................................IndefiniteContinuous Power Dissipation (TA= +70°C)
8-Pin Power-μMAX (derate 17mW/°C above +70°C).......1.3W
Operating Temperature Range...........................-40°C to +85°CJunction Temperature......................................................+150°CStorage Temperature Range.............................-65°C to +150°CLead Temperature (soldering, 10s).................................+300°CSoldering Temperature (reflow).......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.ELECTRICAL CHARACTERISTICS
(VIN= VOUT(NOM)+ 500mV, or VIN= +2.5V (whichever is greater), SHDN= IN, TA= 0°C to +85°C, unless otherwise noted. Typicalvalues are at TA= +25°C.)PARAMETERInput Voltage Input Undervoltage Lockout SYMBOLVIN VUVLO Rising, 75mV hysteresis IOUT = 100mA, TA = +85°CVOUTPreset VOUT ?? 2.5V Preset VOUT < 2.5V CONDITIONSMIN TYP MAX UNITS 2.5-1-1.5-2-31.25VIN = +2.7V, VOUT set to 2.0V, IOUT = 100mA VIN?? 2.7V VOUT = 0V, VIN?? 2.7V VOUT > 96% of nominal value, VIN?? 2.7V 50 ISET IQVIN - VOUT??VLNR??VLDR VSET = 1.25V IOUT = 1mA IOUT = 500mA VOUT = 5.0V IOUT = 500mA VOUT = 3.3V VOUT = 2.5V VIN from (VOUT + 100mV) to 5.5V, ILOAD = 5mA IOUT = 1mA to 500mA 10Hz to 1MHz, COUT = 3.3μF (ESR < 0.1??)IOFFVIH VIL SHDN = GND, VIN = 5.5V 2.5V < VIN < 5.5V 2.5V < VIN < 5.5V SHDN = IN or GND 10 1.6 0.6 100 -10080 110 120 130 210225 250 360mV TA = +85°C 5.5 V V %+1+1.5+2+35%2.0 2.15 2.3 Output Voltage Accuracy (Preset Mode) IOUT = 100mA, TA = 0°C to +85°CIOUT = 1mA to 500mA, VIN > VOUT + 0.5V, TA = 0°C to +85°CAdjustable Output Voltage Range SET Voltage Threshold (Adjustable Mode) Maximum Output Current Short-Circuit Current Limit In-Regulation Current Limit SET Dual Mode? Threshold SET Input Bias Current Ground-Pin Current VSETIOUT ILIM V 1.229 1.250 1.271 TA = 0°C to +85°C 1.219500 0.55 0.8 1.6 100 V1.281 mARMS1.8 150 +100250 A A mV nA μA Dropout Voltage (Note 1) Line Regulation Load Regulation Output Voltage Noise SHUTDOWNShutdown Supply Current SHDN Input Threshold SHDN Input Bias Current 2
-0.15 0 +0.15 %/V 0.4 1.0 % 115 μVRMS0.1 15 μA VnA Dual Mode is a trademark of Maxim Integrated Products.Maxim Integrated
MEMORY存储芯片MAX1792EUA18中文规格书 - 图文
