LD2985

UTC LD2985 LINEAR INTEGRATED CIRCUIT VERY LOW DROP AND LOW NOISE VOLTAGE REGULATOR LOW ESR CAP. COMPATIBLE, WITH INHIBIT FUNCTION 1 DESCRIPTION The UTC LD2985 is a 150mA fixed output voltage regulator. The ultra low drop voltage and the low quiescent current make them particularly suitable for low noise, low power applications, and in battery powered systems. In sleep mode quiescent current is less than 1μA when INHIBIT pin is pulled low. Shutdown Logic Control Function is available on pin 3 (TTL compatible). This means that when the device is used as local regulator, it is possible to put a part of the board in standby, decreasing the total power consumption. An external capacitor, CBYP=10nF, connected between bypass pin and GND reduce the noise to 30μVrms. Typical application are in cellular phone, palmtop laptop computer, personal digital assistant (PDA), personal stereo, camcorder and camera. 2 3 5 4 SOT-25 1:VIN 4:Bypass 2:GND 5:VOUT 3:INHIBIT FEATURES *VERY LOW DROPOUT VOLTAGE (280mV at 150mA AND 7mV at 1mA LOAD) *VERY LOW QUIESCENT CURRENT (2mA Typ. at 150mA LOAD AND 80μA at NO LOAD) *OUTPUT CURRENT UP TO 150mA *LOGIC CONTROLLED ELECTRONIC SHUTDOWN *OUTPUT VOLTAGE OF 1.5, 1.8, 2.5, 2.8, 2.85, 3, 3.1, 3.2, 3.3, 3.5, 3.6, 3.8, 4, 4.7, 5V *INTERNAL CURRENT AND THERMAL LIMIT *AVAILABLE IN ± 1% TOLLERANCE (at 25℃, A VERSION) *LOW OUTPUT NOISE VOLTAGE 30μVrms PIN DESCRIPTION PIN NO. 1 2 PIN NAME IN GND FUNCTION 3 4 5 Input Port Ground Pin Control switch ON/OFF. Inhibit is not internally pulled-up; it cannot be left INHIBIT floating. Disable the device when connected to GND or to a positive voltage less than 0.18V Bypass Pin: Capacitor to be connected to GND in Bypass order to improve the thermal noise performances. OUT Output Port UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R102-024,C UTC LD2985 MARKING INFORMATION PART NUMBER LD2985-1.5V LD2985-1.8V LD2985-2.5V LD2985-2.8V LD2985-2.85V LD2985-3.0V LD2985-3.1V LD2985-3.2V LINEAR INTEGRATED CIRCUIT VOLTAGE CODE A5 A8 B5 B8 BJ C0 C1 C2 VOLTAGE 1.5V 1.8V 2.5V 2.8V 2.85V 3.0V 3.1V 3.2V PART NUMBER LD2985-3.3V LD2985-3.5V LD2985-3.6V LD2985-3.8V LD2985-4.0V LD2985-4.7V LD2985-5.0V VOLTAGE 3.3V 3.5V 3.6V 3.8V 4.0V 4.7V 5.0V VOLTAGE CODE C3 C5 C6 C8 D0 D7 E0 3 2 MARKING 1 LD VOLTAGE CODE 4 5 BLOCK DIAGRAM Vin CURRENT LIMIT Vout SHDN START-UP SHUTDOWN REFERENCE VOLTAGE ERROR AMPLIFIER DRIVER BYPASS TERM. PROTEC. GND ABSOLUTE MAXIMUM RATINGS PARAMETER DC Input Voltage INHIBIT Input Voltage Output Current Power Dissipation Storage Temperature Range Operating Junction Temperature Range SYMBOL Vi VINH Io Ptot Tstg Top RATINGS 16 16 Internally limited Internally limited -65 ~ +150 -40 ~ +125 UNIT V V ℃ ℃ THERMAL DATA PARAMETER Thermal Resistance Junction-case SYMBOL Rthj-case RATINGS 81 UNIT ℃/W UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R102-024,C UTC LD2985 PARAMETER Operating Input Voltage Output Voltage LINEAR INTEGRATED CIRCUIT SYMBOL Vop Vo ELECTRICAL CHARACTERISTICS FOR LD2985 VO±1.0% (TJ=25℃, Vi=Vo+1V, Io=1mA, VSHDN=2V, Ci=1μF, Co=1μF, unless otherwise specified) TEST CONDITIONS Vi=2.5V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ Vi=2.8V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ Vi=3.5V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ MIN 2.5 1.485 1.462 1.447 1.782 1.755 1.737 2.475 2.4375 2.4125 2.772 2.730 2.702 2.821 2.778 2.750 2.970 2.925 2.895 3.069 3.022 2.9915 3.168 3.120 3.088 3.267 3.2175 3.1845 3.465 3.412 3.377 3.564 3.510 3.474 3.762 3.705 3.667 3.96 3.9 3.86 4.653 4.582 4.5355 4.95 4.875 4.825 TYP 1.5 MAX 16 1.515 1.538 1.553 1.818 1.845 1.863 2.525 2.5625 2.5875 2.828 2.870 2.898 2.879 2.921 2.950 3.030 3.075 3.105 3.131 3.1775 3.2085 3.232 3.280 3.312 3.333 3.3825 3.4155 3.535 3.587 3.622 3.636 3.690 3.726 3.838 3.895 3.933 4.04 4.1 4.14 4.747 4.817 4.8645 5.05 5.125 5.175 UNIT V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V V Output Voltage Vo 1.8 Output Voltage Vo 2.5 Output Voltage Vo Vi=3.8V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ Vi=3.85V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ Vi=4.0V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ Vi=4.1V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ Vi=4.2V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ Vi=4.3V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ Vi=4.5V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ Vi=4.6V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ Vi=4.8V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ Vi=5.0V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ Vi=5.7V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ Vi=6.0V Io=1 ~ 150mA Io=1 ~ 150mA, TJ=-40 ~ 125℃ 2.8 Output Voltage Vo 2.85 Output Voltage Vo 3.0 Output Voltage Vo 3.1 Output Voltage Vo 3.2 Output Voltage Vo 3.3 Output Voltage Vo 3.5 Output Voltage Vo 3.6 Output Voltage Vo 3.8 Output Voltage Vo 4 Output Voltage Vo 4.7 Output Voltage Vo 5 UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R102-024,C UTC LD2985 PARAMETER Short Circuit Current Line Regulation LINEAR INTEGRATED CIRCUIT SYMBOL Isc △Vo/△Vi TEST CONDITIONS RL=0 Vi=Vo+1V ~ 16V, Io=1mA Vi=Vo+1V ~ 16V, Io=1mA TJ=-40 ~ 125℃ MIN TYP 400 0.003 MAX 0.014 0.032 UNIT mA %/Vi %/Vi mV mV mV mV mV mV mV mV mV mV μA μA μA μA μA μA μA μA μA μA μA μA dB V V μA μA μV Dropout Voltage Vd Io=0 TJ=-40 ~ 125℃, Io=0 Io=1mA Io=1mA, TJ=-40 ~ 125℃ Io=10mA Io=10mA, TJ=-40 ~ 125℃ Io=50mA Io=50mA, TJ=-40 ~ 125℃ Io=150mA Io=150mA, TJ=-40 ~ 125℃ 1 7 40 120 280 80 100 200 600 2000 0 3 5 10 15 60 90 150 225 350 575 100 150 150 200 300 400 900 1200 3000 4000 2 Quiescent Current Id Io=0 TJ=-40 ~ 125℃, Io=0 Io=1mA Io=1mA, TJ=-40 ~ 125℃ Io=10mA Io=10mA, TJ=-40 ~ 125℃ Io=50mA Io=50mA, TJ=-40 ~ 125℃ Io=150mA Io=150mA, TJ=-40 ~ 125℃ OFF MODE VINH