SSP1117-1.2V

SSP1117 1A Bipolar Linear Regulator Features  Maximum output current is 1.0A  Standby current: 2mA (typ.)  Range of operation input voltage: Max 20V  Load regulation: 0.2%/A (typ.)  Line regulation: 0.03%/V (typ.)  Environment Temperature: -20℃~85℃   DVD Decode Board ADSL Modem  Post Regulators For Switching Supplies Applications   Power Management for Computer Mother Board, Graphic Card LCD Monitor and LCD TV General Description SSP1117 is a series of low dropout three-terminal IN regulators with a dropout of 1.3V at 1A load current. two external resistors. SSP1117 offers thermal shut down function, to assure the SSP1117 features a very low standby current 2mA stability of chip and power system. And it uses trimming compared to 5mA of competitor. technique toguarantee output voltage accuracy within 2%. Other output voltage accuracy can be customized on 3.3V, and 5V, SSP1117 has an adjustable version, which demand, such as 1%. can provide an output voltage from 1.25 to 12V with only SSP1117 is available in SOT-223, TO-252 power package. PR O Other than a fixed version, Vout = 1.2V, 1.8V, 2.5V, 2.85V， SI Typical Application Application circuit of SSP1117 fixed version Typical Electrical Characteristic Ver1.3 1 Shanghai Siproin Microelectronics Co. SSP1117 1A Bipolar Linear Regulator Selection Table Marking Part No. Output Voltage XX=12 1.2V XX=18 1.8V 1117 XX=28 2.85V XXYYWW XX=25 2.5V XX=33 3.3V XX=50 5.0V XX=ADJ Adj 1117 XXYYWW Designator 1117 XX YYWW SOT-223 TO-252 Description IN Ordering Information Marking Package Product code Output Voltage(1.2~12.0V) DATE CODE Parameters Temperature&Rohs Package type Packing type: Description C:-40~85℃ ,Pb Free Rohs Std. L:SOT-223 O:TO-252 TR:Tape&Reel (Standard) 2%(Customized) SI Voltage accuracy PR O Note:”XX” stands for output voltages. Other voltages can be specially customized Block Diagram Ver1.3 2 Shanghai Siproin Microelectronics Co. SSP1117 1A Bipolar Linear Regulator Absolute Maximum Ratings IN Pin Configuration Max Input Voltage ············································································· ··············· ······· 30V PR O Max Operating Junction Temperature(Tj) ················································· ··············· ······· 150℃ Ambient Temperature(Ta) ··································································· ··············· ······· -40℃~ 85℃ Storage Temperature(Ts) ···································································· ··············· ······· -40℃~150℃ Lead Temperature & Time ··································································· ··············· ······· 260℃ 10S Caution: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability. Recommended Work Conditions 20V Recommended operating junction temperature(Tj)························································· ······· -20~125℃ SI Recommended maximum input voltage ······································································ ······· Thermal Information Parameter Package thermal resistance Ver1.3 Package Rating Unit SOT-223 20 ℃/W TO-252 12.5 ℃/W 3 Shanghai Siproin Microelectronics Co. SSP1117 1A Bipolar Linear Regulator Electrical Characteristics TA=25℃,unless otherwise noted. Symbol Parameter Vref Reference Conditions SSP1117-Adj voltage Min Typ Max Unit 1.225 1.25 1.275 V 1.176 1.2 1.224 V 1.764 1.8 1.836 V 2.45 2.5 2.55 V 2.793 2.85 2.907 V 10mA≤Iout≤1A , Vin=3.25V SSP1117-1.2V 0≤Iout≤1A , Vin=3.2V SSP1117-1.8V 0≤Iout≤1A , Vin=3.8V SSP1117-2.5V Vout Output voltage 0≤Iout≤1A , Vin=4.5V 0≤Iout≤1A , Vin=4.85V SSP1117-3.3V 0≤Iout≤1A , Vin=5.3V 3.234 3.3 3.366 V 4.9 5 5.1 V 0.03 0.2 %/V 0.03 0.2 %/V 0.03 0.2 %/V 0.03 0.2 %/V 0.03 0.2 %/V 0.03 0.2 %/V 0.03 0.2 %/V PR O SSP1117-5.0V IN SSP1117-2.85V 0≤Iout≤1A , Vin=7.0V SSP1117-1.2V Iout=10mA, 2.7V≤Vin≤10V SSP1117-ADJ Iout=10mA, 2.75V≤Vin≤12V SSP1117-1.8V △Vout SI Iout=10mA, 3.3V≤Vin≤12V Line regulation SSP1117-2.5V Iout=10mA, 4.0V≤Vin≤12V SSP1117-2.85V Iout=10mA, 4.35V≤Vin≤12V SSP1117-3.3V Iout=10mA, 4.8V≤Vin≤12V SSP1117-5.0V Iout=10mA, 6.5V≤Vin≤12V Ver1.3 4 Shanghai Siproin Microelectronics Co. SSP1117 2 8 mV 2 8 mV 3 12 mV 4 16 mV 5 20 mV 6 24 mV IN 1A Bipolar Linear Regulator SSP1117-1.2V 9 36 mV 1.15 1.3 V 1.3 1.5 V SSP1117-ADJ 2 10 mA SSP1117-1.2V,Vin=10V 2 5 mA SSP1117-1.8V,Vin=12V 2 5 mA SSP1117-2.5V,Vin=12V 2 5 mA SSP1117-2.85V,Vin=12V 2 5 mA SSP1117-3.3V,Vin=12V 2 5 mA SSP1117-5.0V,Vin=12V 2 5 mA SSP1117-ADJ 55 120 uA 0.2 10 uA Vin =2.7V, 10mA≤Iout≤1A SSP1117-ADJ Vin =2.75V, 10mA≤Iout≤1A SSP1117-1.8V Vin =3.3V, 10mA≤Iout≤1A △Vout Load SSP1117-2.5V regulation Vin =4.0V, 10mA≤Iout≤1A SSP1117-2.85V Vin =4.35V, 10mA≤Iout≤1A SSP1117-3.3V Vin =4.8V, 10mA≤Iout≤1A SSP1117-5.0V Vin =6.5V, 10mA≤Iout≤1A Dropout voltage Iout =100mA PR O Vdrop Iout=1A Imin Minimum load current Iq Quiescent IAdj SI Current Adjust pin current Ichange Iadj change Vin=5V,10mA≤Iout≤1A SSP1117-ADJ Vin=5V,10mA≤Iout≤1A ΔV/ΔT ±100 Temperature ppm coefficien θJC Thermal SOT-223 20 resistance TO-252 10 ℃/W Note1: All test are conducted under ambient temperature 25°C and within a short period of time 20ms Note2: Load current smaller than minimum load current of SSP1117-ADJ will lead to unstable or oscillation output. Ver1.3 5 Shanghai Siproin Microelectronics Co. SSP1117 1A Bipolar Linear Regulator Detailed Description SSP1117 is a series of low dropout voltage, three terminal regulators. Its application circuit is very simple: the fixed version only needs two capacitors and the adjustable version only needs two resistors and two capacitors to work. It is composed of some modules including start-up circuit, bias circuit, bandgap, thermal shutdown, power transistors and its driver circuit and so on. The thermal shut down modules can assure chip and its application system working safety when the junction temperature is larger than 140°C. The bandgap module provides stable reference voltage, whose temperature coefficient is compensated by careful design considerations. The temperature coefficient is under 100 ppm/°C. And the accuracy of output voltage is guaranteed by trimming technique. IN Typical Application SSP1117 has an adjustable version and six fixed versions (1.2V, 1.8V, 2.5V, 2.85V , 3.3V and 5V) PR O Fixed Output Voltage Version Application circuit of SSP1117 fixed version SI 1) Recommend using 10uF tan capacitor as bypass capacitor (C1) for all application circuit. 2) Recommend using 10uF tan capacitor to assure circuit stability. Adjustable Output Voltage Version Application Circuit of SSP1117-ADJ The output voltage of adjustable version follows the equation: Vout=1.25×(1+R2/R1)+IAdj×R2. We can ignore IAdj because IAdj (about 50uA) is much less than the current of R1 (about 2~10mA). 1) To meet the minimum load current (>10mA) requirement, R1 is recommended to be 125ohm or lower. As SSP1117-ADJ can keep itself stable at load current about 2mA, R1 is not allowed to be higher than 625ohm. Ver1.3 6 Shanghai Siproin Microelectronics Co. SSP1117 1A Bipolar Linear Regulator 2) Using a bypass capacitor (CADJ) between the ADJ pin and ground can improve ripple rejection. This bypass capacitor prevents ripple from being amplified as the output voltage is increased. The impedance of CADJ should be less than R1 to prevent ripple from being amplified. As R1 is normally in the range of 100Ω~500Ω, the value of CADJ should satisfy this equation: 1/(2π×fripple×CADJ)