LT3009 Series 3µA IQ, 20mA Low Dropout Linear Regulators FEATURES DESCRIPTION n The LT®3009 Series are micropower, low dropout voltage (LDO) linear regulators. The devices supply 20mA output current with a dropout voltage of 280mV. No-load quiescent current is 3μA. Ground pin current remains at less than 5% of output current as load increases. In shutdown, quiescent current is less than 1μA. n n n n n n n n n n n n Ultralow Quiescent Current: 3μA Input Voltage Range: 1.6V to 20V Output Current: 20mA Dropout Voltage: 280mV Adjustable Output (VADJ = VOUT(MIN) = 600mV) Fixed Output Voltages: 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, 5V Output Tolerance: ±2% Over Load, Line and Temperature Stable with Low ESR, Ceramic Output Capacitors (1μF minimum) Shutdown Current: <1μA Current Limit Protection Reverse-Battery Protection Thermal Limit Protection 8-Lead SC70 and 2mm × 2mm DFN Packages APPLICATIONS n n n Low Current Battery-Powered Systems Keep-Alive Power Supplies Remote Monitoring Utility Meters Hotel Door Locks The LT3009 regulators optimize stability and transient response with low ESR ceramic capacitors, requiring a minimum of only 1μF. The regulators do not require the addition of ESR as is common with other regulators. Internal protection circuitry includes current limiting, thermal limiting, reverse-battery protection and reversecurrent protection. The LT3009 Series are ideal for applications that require moderate output drive capability coupled with ultralow standby power consumption. The device is available in fixed output voltages of 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and 5V, and as an adjustable device with an output voltage range down to the 600mV reference. The LT3009 is available in the 6-lead DFN and 8-lead SC70 packages. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION 3.3V, 20mA Supply with Shutdown Dropout Voltage/Quiescent Current 500 OUT 1μF 1μF VOUT 3.3V 20mA LT3009-3.3 SHDN GND 3009 TA01a DROPOUT VOLTAGE (mV) IN 5.0 ILOAD = 20mA 4.5 400 4.0 350 3.5 DROPOUT VOLTAGE 300 250 IQ 3.0 2.5 200 2.0 150 1.5 100 1.0 50 0.5 0 –50 –25 0 QUIESCENT CURRENT (μA) VIN 3.75V TO 20V 450 0 25 50 75 100 125 150 TEMPERATURE (°C) 3009 TA01b 3009fb 1 LT3009 Series ABSOLUTE MAXIMUM RATINGS (Note 1) IN Pin Voltage .........................................................±22V OUT Pin Voltage ......................................................±22V Input-to-Output Differential Voltage ........................±22V ADJ Pin Voltage ......................................................±22V SHDN Pin Voltage (Note 8) .....................................±22V Output Short-Circuit Duration .......................... Indefinite Operating Junction Temperature Range (Notes 2, 3) (E, I Grades) ......................................–40°C to 125°C Storage Temperature Range...................–65°C to 150°C Lead Temperature: Soldering, 10 sec SC8 Package Only ............................................. 300°C PIN CONFIGURATION TOP VIEW TOP VIEW 6 GND ADJ/NC* 1 OUT 2 7 OUT 3 SHDN GND GND GND 5 SHDN 4 IN DC PACKAGE 6-LEAD (2mm s 2mm) PLASTIC DFN TJMAX = 125°C, θJA = 65°C/W TO 85°C/W** EXPOSED PAD (PIN 7) IS GND, MUST BE SOLDERED TO PCB 1 2 3 4 8 7 6 5 NC ADJ/NC* OUT IN SC8 PACKAGE 8-LEAD PLASTIC SC70 TJMAX = 125°C, θJA = 75°C/W TO 95°C/W** * The ADJ pin is not connected in fixed output voltage versions. ** See the Applications Information section. ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3009EDC#PBF LT3009EDC#TRPBF LCQX 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC#PBF LT3009IDC#TRPBF LCQX 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009EDC-1.2#PBF LT3009EDC-1.2#TRPBF LDTW 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC-1.2#PBF LT3009IDC-1.2#TRPBF LDTW 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009EDC-1.5#PBF LT3009EDC-1.5#TRPBF LDVB 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC-1.5#PBF LT3009IDC-1.5#TRPBF LDVB 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009EDC-1.8#PBF LT3009EDC-1.8#TRPBF LDKC 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC-1.8#PBF LT3009IDC-1.8#TRPBF LDKC 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009EDC-2.5#PBF LT3009EDC-2.5#TRPBF LDTY 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC-2.5#PBF LT3009IDC-2.5#TRPBF LDTY 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009EDC-3.3#PBF LT3009EDC-3.3#TRPBF LDKD 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC-3.3#PBF LT3009IDC-3.3#TRPBF LDKD 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009EDC-5#PBF LT3009EDC-5#TRPBF LDKF 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC-5#PBF LT3009IDC-5#TRPBF LDKF 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C 3009fb 2 LT3009 Series ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3009ESC8#PBF LT3009ESC8#TRPBF LCQY 8-Lead Plastic SC70 –40°C to 125°C LT3009ESC8-1.2#PBF LT3009ESC8-1.2#TRPBF LDTX 8-Lead Plastic SC70 –40°C to 125°C LT3009ESC8-1.5#PBF LT3009ESC8-1.5#TRPBF LDVC 8-Lead Plastic SC70 –40°C to 125°C LT3009ESC8-1.8#PBF LT3009ESC8-1.8#TRPBF LDKG 8-Lead Plastic SC70 –40°C to 125°C LT3009ESC8-2.5#PBF LT3009ESC8-2.5#TRPBF LDTZ 8-Lead Plastic SC70 –40°C to 125°C LT3009ESC8-3.3#PBF LT3009ESC8-3.3#TRPBF LDKH 8-Lead Plastic SC70 –40°C to 125°C LT3009ESC8-5#PBF LT3009ESC8-5#TRPBF LDKJ 8-Lead Plastic SC70 –40°C to 125°C LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3009EDC LT3009EDC#TR LCQX 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC LT3009IDC#TR LCQX 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009EDC-1.2 LT3009EDC-1.2#TR LDTW 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC-1.2 LT3009IDC-1.2#TR LDTW 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009EDC-1.5 LT3009EDC-1.5#TR LDVB 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC-1.5 LT3009IDC-1.5#TR LDVB 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009EDC-1.8 LT3009EDC-1.8#TR LDKC 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC-1.8 LT3009IDC-1.8#TR LDKC 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009EDC-2.5 LT3009EDC-2.5#TR LDTY 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC-2.5 LT3009IDC-2.5#TR LDTY 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009EDC-3.3 LT3009EDC-3.3#TR LDKD 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC-3.3 LT3009IDC-3.3#TR LDKD 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009EDC-5 LT3009EDC-5#TR LDKF 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009IDC-5 LT3009IDC-5#TR LDKF 6-Lead (2mm × 2mm) Plastic DFN –40°C to 125°C LT3009ESC8 LT3009ESC8#TR LCQY 8-Lead Plastic SC70 –40°C to 125°C LT3009ESC8-1.2 LT3009ESC8-1.2#TR LDTX 8-Lead Plastic SC70 –40°C to 125°C LT3009ESC8-1.5 LT3009ESC8-1.5#TR LDVC 8-Lead Plastic SC70 –40°C to 125°C LT3009ESC8-1.8 LT3009ESC8-1.8#TR LDKG 8-Lead Plastic SC70 –40°C to 125°C LT3009ESC8-2.5 LT3009ESC8-2.5#TR LDTZ 8-Lead Plastic SC70 –40°C to 125°C LT3009ESC8-3.3 LT3009ESC8-3.3#TR LDKH 8-Lead Plastic SC70 –40°C to 125°C LT3009ESC8-5 LT3009ESC8-5#TR LDKJ 8-Lead Plastic SC70 –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ 3009fb 3 LT3009 Series ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25°C. (Note 2) PARAMETER CONDITIONS MIN l 1.6 LT3009-1.2: VIN = 1.7V, ILOAD = 100μA 1.7V < VIN < 20V, 1μA < ILOAD < 20mA l 1.188 1.176 LT3009-1.5: VIN = 2V, ILOAD = 100μA 2V < VIN < 20V, 1μA < ILOAD < 20mA l LT3009-1.8: VIN = 2.3V, ILOAD = 100μA 2.3V < VIN < 20V, 1μA < ILOAD < 20mA TYP MAX UNITS 20 V 1.2 1.2 1.212 1.224 V V 1.485 1.470 1.5 1.5 1.515 1.530 V V l 1.782 1.764 1.8 1.8 1.818 1.836 V V LT3009-2.5: VIN = 3V, ILOAD = 100μA 3V < VIN < 20V, 1μA < ILOAD < 20mA l 2.475 2.45 2.5 2.5 2.525 2.55 V V LT3009-3.3: VIN = 3.8V, ILOAD = 100μA 3.8V < VIN < 20V, 1μA < ILOAD < 20mA l 3.267 3.234 3.3 3.3 3.333 3.366 V V LT3009-5: VIN = 5.5V, ILOAD = 100μA 3.8V < VIN < 20V, 1μA < ILOAD < 20mA l 4.950 4.900 5 5 5.050 5.100 V V ADJ Pin Voltage (Notes 3, 4) VIN = 1.6V, ILOAD = 100μA 1.6V < VIN < 20V, 1μA < ILOAD < 20mA l 594 588 600 600 606 612 mV mV Line Regulation (Note 3) LT3009-1.2: LT3009-1.5: LT3009-1.8: LT3009-2.5: LT3009-3.3: LT3009-5: LT3009: ΔVIN = 1.7V to 20V, ILOAD = 1mA ΔVIN = 2.0V to 20V, ILOAD = 1mA ΔVIN = 2.3V to 20V, ILOAD = 1mA ΔVIN = 3.0V to 20V, ILOAD = 1mA ΔVIN = 3.8V to 20V, ILOAD = 1mA ΔVIN = 5.5V to 20V, ILOAD = 1mA ΔVIN = 1.6V to 20V, ILOAD = 1mA l l l l l l l 0.8 1.0 1.2 1.7 2.2 3.3 0.4 3.0 3.8 4.5 6.3 8.3 12.5 1.5 mV mV mV mV mV mV mV Load Regulation (Note 3) LT3009-1.2: LT3009-1.5: LT3009-1.8: LT3009-2.5: LT3009-3.3: LT3009-5: LT3009: VIN = 1.7V, ILOAD = 1μA to 20mA VIN = 2V, ILOAD = 1μA to 20mA VIN = 2.3V, ILOAD = 1μA to 20mA VIN = 3V, ILOAD = 1μA to 20mA VIN = 3.8V, ILOAD = 1μA to 20mA VIN = 5.5V, ILOAD = 1μA to 20mA VIN = 1.6V, ILOAD = 1μA to 20mA l l l l l l l 1.4 1.8 2.1 2.9 3.9 5.8 0.7 6 7.5 9.0 12.5 16.5 25 3 mV mV mV mV mV mV mV Dropout Voltage VIN = VOUT(NOMINAL) (Notes 5, 6) ILOAD = 100μA ILOAD = 100μA l 115 180 250 mV mV ILOAD = 1mA ILOAD = 1mA l 170 250 350 mV mV ILOAD = 10mA ILOAD = 10mA l 250 310 410 mV mV ILOAD = 20mA ILOAD = 20mA l 280 350 450 mV mV ILOAD = 0μA ILOAD = 0μA l 6 μA μA ILOAD = 0μA ILOAD = 100μA ILOAD = 1mA ILOAD = 10mA ILOAD = 20mA l l l l l 6 12 50 500 1000 μA μA μA μA μA Operating Voltage Regulated Output Voltage (Note 4) Quiescent Current (Notes 6, 7) GND Pin Current VIN = VOUT(NOMINAL) + 0.5V (Notes 6, 7) 3 3 6 23 200 450 3009fb 4 LT3009 Series ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25°C. (Note 2) PARAMETER CONDITIONS MIN Output Voltage Noise (Note 9) COUT = 1μF, ILOAD = 20mA, BW = 10Hz to 100kHz TYP MAX 150 UNITS μVRMS l –10 0.3 10 nA VOUT = Off to On VOUT = On to Off l l 0.66 0.36 1.5 0.2 V V VSHDN = 0V, VIN = 20V VSHDN = 20V, VIN = 20V l l ±1 1.6 μA μA Quiescent Current in Shutdown VIN = 6V, VSHDN = 0V l <1 μA Ripple Rejection (Note 3) VIN – VOUT = 1.5V, VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 20mA ADJ Pin Bias Current Shutdown Threshold SHDN Pin Current LT3009 LT3009-1.2 LT3009-1.5 LT3009-1.8 LT3009-2.5 LT3009-3.3 LT3009-5 Current Limit 60 57 55.5 54 52 49 44 VIN = 20V, VOUT = 0 VIN = VOUT(NOMINAL) + 1V, ΔVOUT = – 5% l Input Reverse Leakage Current VIN = –20V, VOUT = 0 l Reverse Output Current VOUT = 1.2V, VIN = 0 Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LT3009 regulators are tested and specified under pulse load conditions such that TJ ≈ TA. The LT3009E is 100% tested at TA = 25°C. Performance at –40°C and 125°C is assured by design, characterization and correlation with statistical process controls. The LT3009I is guaranteed over the full –40°C to 125°C operating junction temperature range. Note 4: Operating conditions are limited by maximum junction temperature. The regulated output voltage specification will not apply for all possible combinations of input voltage and output current. When operating at the maximum input voltage, the output current range must be limited. When operating at the maximum output current, the input voltage must be limited. Note 5: Dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a specified output current. In dropout, the output voltage equals (VIN – VDROPOUT). For the LT3009-1.2, dropout voltage will be limited by the minimum input voltage under some voltage/ load conditions. 0.5 72 68 67 66 63 61 56 dB dB dB dB dB dB dB 60 mA mA 22 200 350 μA 0.6 10 μA Note 6: To satisfy minimum input voltage requirements, the LT3009 adjustable version is tested and specified for these conditions with an external resistor divider (61.9k bottom, 280k top) which sets VOUT to 3.3V. The external resistor divider adds 9.69μA of DC load on the output. This external current is not factored into GND pin current. Note 7: GND pin current is tested with VIN = VOUT(NOMINAL) + 0.5V and a current source load. GND pin current will increase in dropout. For the fixed output voltage versions, an internal resistor divider will add to the GND pin current (∼2μA for the LT3009-5, ∼1μA for the LT3009-1.2, LT3009-1.5, LT3009-1.8, LT3009-2.5 and LT3009-3.3). See the GND Pin Current curves in the Typical Performance Characteristics section. Note 8: The SHDN pin can be driven below GND only when tied to the IN pin directly or through a pull-up resistor. If the SHDN pin is driven below GND by more than –0.3V while IN is powered, the output will turn on. Note 9: Output noise is listed for the adjustable version with the ADJ pin connected to the OUT pin. See the RMS Output Noise vs Load Current curve in the Typical Performance Characteristics Section. 3009fb 5 LT3009 Series TYPICAL PERFORMANCE CHARACTERISTICS Dropout Voltage Dropout Voltage ILOAD = 20mA TA = 125°C 350 DROPOUT VOLTAGE (mV) DROPOUT VOLTAGE (mV) 400 300 TA = 25°C 250 200 150 100 50 Minimum Input Voltage 450 1.6 400 1.4 350 300 10mA 20mA 250 200 1mA 100μA 150 100 0 0 5 15 10 OUTPUT CURRENT (mA) 20 1 0.8 0.6 0.4 0 25 50 75 100 125 150 –50 –25 1.224 1.220 1.530 ILOAD = 100μA 1.525 1.515 0.598 0.596 0.594 OUTPUT VOLTAGE (V) 1.520 1.212 OUTPUT VOLTAGE (V) 1.216 0.606 0.600 1.208 1.204 1.200 1.196 1.192 1.188 1.510 1.505 1.500 1.495 1.490 1.485 1.184 1.480 0.590 1.180 1.176 –50 –25 1.475 1.470 –50 –25 25 50 75 100 125 150 0 25 50 75 TEMPERATURE (°C) TEMPERATURE (°C) 100 125 150 ILOAD = 100μA 0.592 0 75 Output Voltage LT3009-1.5 0.608 0.602 50 3009 G03 Output Voltage LT3009-1.2 0.604 25 TEMPERATURE (°C) 3009 G02 ILOAD = 100μA 0.588 –50 –25 0 TEMPERATURE (°C) ADJ Pin Voltage ADJ PIN VOLTAGE (V) 1.2 0 –50 –25 3009 G01 0.610 ILOAD = 20mA 0.2 50 0 0.612 MINIMUM INPUT VOLTAGE (V) 450 TA = 25°C, unless otherwise noted. 100 125 150 0 25 50 75 TEMPERATURE (°C) 3009 G27 100 125 150 3009 G28 3009 G04 Output Voltage LT3009-1.8 1.830 2.55 ILOAD = 100μA 2.54 1.812 1.806 1.800 1.794 1.788 1.782 3.355 2.52 2.51 2.50 2.49 2.48 0 25 50 75 100 125 150 TEMPERATURE (°C) 0 25 50 75 TEMPERATURE (°C) 3009 G05 3.333 3.322 3.311 3.300 3.289 3.278 3.267 3.256 2.46 2.45 –50 –25 ILOAD = 100μA 3.344 2.47 1.776 1.770 1.764 –50 –25 3.366 ILOAD = 100μA 2.53 1.818 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 1.824 Output Voltage LT3009-3.3 OUTPUT VOLTAGE (V) 1.836 Output Voltage LT3009-2.5 100 125 150 3009 G29 3.245 3.234 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) 3009 G06 3009fb 6 LT3009 Series TYPICAL PERFORMANCE CHARACTERISTICS Output Voltage LT3009-5 6 10 ILOAD = 100μA 8 ADJ PIN BIAS CURRENT (nA) 5.075 OUTPUT VOLTAGE (V) Adjustable Version Quiescent Current ADJ Pin Bias Current 5.050 5.025 5.000 4.975 4.950 4.925 5 6 QUIESCENT CURRENT (μA) 5.100 4 2 0 –2 –4 –6 4 3 2 1 –8 4.900 –50 –25 0 25 50 75 0 –10 –50 –25 100 125 150 0 TEMPERATURE (°C) 25 50 75 100 125 150 20 12 10 8 6 16 450 14 400 12 10 8 6 300 250 100 50 0 0 0 2 3 4 5 6 7 INPUT VOLTAGE (V) 8 9 10 3009 G10 0 1 2 3 4 5 6 7 INPUT VOLTAGE (V) 8 9 10 3009 G30 RL = 120Ω, IL = 10mA 200 150 2 1 RL = 60Ω, IL = 20mA 350 4 0 100 125 150 500 2 4 75 GND Pin Current LT3009-1.2 GND PIN CURRENT (μA) 14 50 3009 G09 LT3009-2.5 LT3009-3.3 LT3009-5 18 QUIESCENT CURRENT (μA) 16 25 TEMPERATURE (°C) Quiescent Current LT3009-1.2 LT3009-1.5 LT3009-1.8 18 0 3009 G08 Quiescent Current 20 –50 –25 TEMPERATURE (°C) 3009 G07 QUIESCENT CURRENT (μA) TA = 25°C, unless otherwise noted. RL = 12k, IL = 100μA RL = 1.2k, IL = 1mA 0 1 2 3 4 5 6 7 INPUT VOLTAGE (V) 8 9 10 3009 G31 3009fb 7 LT3009 Series TYPICAL PERFORMANCE CHARACTERISTICS GND Pin Current LT3009-1.5 GND Pin Current LT3009-1.8 500 500 450 GND PIN CURRENT (μA) 350 300 250 RL = 150Ω, IL = 10mA 200 150 100 300 250 RL = 180Ω, IL = 10mA 200 150 0 350 300 250 150 100 2 3 4 5 6 7 INPUT VOLTAGE (V) 8 9 10 0 1 2 3009 G32 450 450 400 RL = 165Ω, IL = 20mA GND PIN CURRENT (μA) 400 300 250 RL = 330Ω, IL = 10mA 150 100 10 2 3 4 5 6 7 INPUT VOLTAGE (V) 8 9 2 3 4 5 6 7 INPUT VOLTAGE (V) 8 9 10 GND Pin Current vs ILOAD VIN = 3.8V VOUT = 3.3V 350 300 250 RL = 500Ω, IL = 10mA 200 150 100 10 RL = 50k, IL = 100μA RL = 5k, IL = 1mA 0 1 1 3009 G33 1000 RL = 250Ω, IL = 20mA 50 0 0 0 100 RL = 33k, IL = 100μA RL = 3.3k, IL = 1mA 50 9 8 GND Pin Current LT3009-5 500 200 3 4 5 6 7 INPUT VOLTAGE (V) 3009 G11 GND Pin Current LT3009-3.3 350 RL = 2.5k, IL = 1mA 0 GND CURRENT (μA) 1 RL = 25k, IL = 100μA 50 RL = 1.8k, IL = 1mA 0 0 RL = 250Ω, IL = 10mA 200 RL = 18k, IL = 100μA 50 RL = 1.5k, IL = 1mA RL = 125Ω, IL = 20mA 400 350 100 RL = 15k, IL = 100μA 50 450 RL = 90Ω, IL = 20mA 400 GND PIN CURRENT (μA) RL = 75Ω, IL = 20mA 400 GND PIN CURRENT (μA) GND Pin Current LT3009-2.5 500 450 GND PIN CURRENT (μA) TA = 25°C, unless otherwise noted. 10 3009 G12 0 1 2 3 4 5 6 7 INPUT VOLTAGE (V) 8 9 10 1 0.001 0.01 0.1 1 LOAD (mA) 10 100 3009 G13 3009 G14 3009fb 8 LT3009 Series TYPICAL PERFORMANCE CHARACTERISTICS SHDN Pin Thresholds SHDN Pin Input Current 1.2 1.0 0.8 OFF TO ON 0.6 ON TO OFF 0.2 1600 450 1400 400 350 300 250 200 150 100 0 25 50 75 0 100 125 150 0 2 4 50 VIN = 20V REVERSE OUTPUT CURRENT (μA) VIN = 1.6V 40 30 20 10 50 75 100 125 150 35 30 25 OUT 20 15 10 ADJ 3009 G18 75 100 125 150 70 60 50 40 4.7μF 30 20 1μF 10 –50 –25 0 25 50 75 100 125 150 TEMPERATURE (°C) TEMPERATURE (°C) 50 VIN = 2V + 50mVRMS VOUT = 600mV ILOAD = 20mA 80 40 0 25 25 Input Ripple Rejection 90 5 0 0 3009 G17 OUT = ADJ = 1.2V IN = SHDN = GND 45 50 –50 –25 TEMPERATURE (°C) Reverse Output Current Current Limit –50 –25 400 3009 G16 70 0 600 0 6 8 10 12 14 16 18 20 SHDN PIN VOLTAGE (V) 3009 G15 60 800 200 TEMPERATURE (°C) CURRENT LIMIT (mA) 1000 50 –50 –25 VSHDN = 20V 1200 INPUT RIPPLE REJECTION (dB) 0 SHDN Pin Input Current 500 SHDN PIN INPUT CURRENT (nA) SHDN PIN INPUT CURRENT (nA) SHDN PIN THRESHOLD VOLTAGE (V) 1.4 0.4 TA = 25°C, unless otherwise noted. 3009 G19 0 10 100 1k 10k FREQUENCY (Hz) 100k 1M 3009 G20 3009fb 9 LT3009 Series TYPICAL PERFORMANCE CHARACTERISTICS 3.0 70 2.5 60 2.0 50 40 30 20 VIN = VOUT (NOMINAL) + 1V + 0.5VP-P RIPPLE AT f = 120Hz ILOAD = 20mA 10 0 –50 –25 0 25 50 75 Output Noise Spectral Density ΔIL = 1μA TO 20mA VOUT = 600mV VIN = 1.6V 1.5 1.0 0.5 0 –0.5 100 125 150 –1.0 –50 –25 0 25 50 75 RMS Output Noise vs Load Current (10Hz to 100kHz) OUTPUT NOISE (μVRMS) 1 0.1 10 1k 10k FREQUENCY (Hz) 100k 3009 G23 IOUT = 1mA TO 20mA VIN = 5.5V VOUT = 5V COUT = 4.7μF VOUT 50mV/DIV 3.3V 100 Transient Response IOUT = 1mA TO 20mA VIN = 5.5V VOUT = 5V COUT = 1μF 5V VOUT 50mV/DIV 2.5V 300 1.8V 1.5V 1.2V 200 600mV 100 0 0.001 10 Transient Response 600 400 5V 3.3V 2.5V 1.8V 1.5V 1.2V 1V 0.6V 3009 G22 3009 G21 500 100 TEMPERATURE (°C) TEMPERATURE (°C) 700 100 125 150 OUTPUT NOISE SPECTRAL DENSITY (μV√Hz) Load Regulation 80 LOAD REGULATION (mV) INPUT RIPPLE REJECTION (dB) Input Ripple Rejection TA = 25°C, unless otherwise noted. 0.01 0.1 1 ILOAD (mA) 10 IOUT 20mA/DIV 500μs/DIV 3009 G25 IOUT 20mA/DIV 500μs/DIV 3009 G26 100 3009 G24 3009fb 10 LT3009 Series PIN FUNCTIONS (SC70/DFN) SHDN (Pin 1/Pin 5): Shutdown. Pulling the SHDN pin low puts the LT3009 into a low power state and turns the output off. If unused, tie the SHDN pin to VIN. The LT3009 does not function if the SHDN pin is not connected. The SHDN pin cannot be driven below GND unless tied to the IN pin. If the SHDN pin is driven below GND while IN is powered, the output will turn on. SHDN pin logic cannot be referenced to a negative rail. GND (Pins 2, 3, 4/Pin 6): Ground. Connect the bottom of the resistor divider that sets output voltage directly to GND for the best regulation. IN (Pin 5/Pin 4): Input. The IN pin supplies power to the device. The LT3009 requires a bypass capacitor at IN if the device is more than six inches away from the main input filter capacitor. In general, the output impedance of a battery rises with frequency, so it is advisable to include a bypass capacitor in battery-powered circuits. A bypass capacitor in the range of 0.1μF to 10μF will suffice. The LT3009 withstands reverse voltages on the IN pin with respect to ground and the OUT pin. In the case of a reversed input, which occurs with a battery plugged in backwards, the LT3009 acts as if a large resistor is in series with its input. Limited reverse current flows into the LT3009 and no reverse voltage appears at the load. The device protects both itself and the load. OUT (Pin 6/Pins 2, 3): Output. This pin supplies power to the load. Use a minimum output capacitor of 1μF to prevent oscillations. Large load transient applications require larger output capacitors to limit peak voltage transients. See the Applications Information section for more information on output capacitance and reverse output characteristics. ADJ (Pin 7/Pin 1): Adjust. This pin is the error amplifier’s inverting terminal. Its 300pA typical input bias current flows out of the pin (see curve of ADJ Pin Bias Current vs Temperature in the Typical Performance Characteristics section). The ADJ pin voltage is 600mV referenced to GND and the output voltage range is 600mV to 19.5V. This pin is not connected in the fixed output voltage versions. NC (Pins 7,8/Pin 1): No Connect. For the adjustable voltage version, Pin 8 is an NC pin in the SC70 package. For the fixed voltage versions, Pin 7 and Pin 8 are NC pins in the SC70 package, and Pin 1 is an NC pin in the DFN package. NC pins are not tied to any internal circuitry. They may be floated, tied to VIN or tied to GND. Exposed Pad (Pin 7, DFN Package Only): Ground. The Exposed Pad (backside) of the DFN package is an electrical connection to GND. To ensure optimum performance, solder Pin 7 to the PCB and tie directly to Pin 6. 3009fb 11 LT3009 Series APPLICATIONS INFORMATION The LT3009 is a low dropout linear regulator with ultralow quiescent current and shutdown. Quiescent current is extremely low at 3μA and drops well below 1μA in shutdown. The device supplies up to 20mA of output current. Dropout voltage at 20mA is typically 280mV. The LT3009 incorporates several protection features, making it ideal for use in battery-powered systems. The device protects itself against both reverse-input and reverse-output voltages. In battery backup applications, where a backup battery holds up the output when the input is pulled to ground, the LT3009 acts as if a blocking diode is in series with its output and prevents reverse current flow. In applications where the regulator load returns to a negative supply, the output can be pulled below ground by as much as 22V without affecting startup or normal operation. Specifications for output voltages greater than 0.6V are proportional to the ratio of the desired output voltage to 0.6V: VOUT/0.6V. For example, load regulation for an output current change of 100μA to 20mA is –0.7mV typical at VOUT = 0.6V. At VOUT = 5V, load regulation is: 5V • (− 0 . 7mV) = − 5 . 83mV 0 . 6V Table 1 shows resistor divider values for some common output voltages with a resistor divider current of about 1μA. Table 1. Output Voltage Resistor Divider Values Adjustable Operation The LT3009 has an output voltage range of 0.6V to 19.5V. Figure 1 shows that output voltage is set by the ratio of two external resistors. The IC regulates the output to maintain the ADJ pin voltage at 600mV referenced to ground. The current in R1 equals 600mV/R1 and the current in R2 is the current in R1 minus the ADJ pin bias current. The ADJ pin bias current, typically 300pA at 25°C, flows out of the pin. Calculate the output voltage using the formula in Figure 1. An R1 value of 619k sets the divider current to 0.97μA. Do not make R1’s value any greater than 619k to minimize output voltage errors due to the ADJ pin bias current and to insure stability under minimum load conditions. In shutdown, the output turns off and the divider current is zero. Curves of ADJ Pin Voltage vs Temperature and ADJ Pin Bias Current vs Temperature appear in the Typical Performance Characteristics. VOUT = 600mV* (1 + R2/R1) – (IADJ • R2) VADJ = 600mV IADJ = 0.3nA at 25°C OUTPUT RANGE = 0.6V to 19.5V VOUT R1 R2 1V 604k 402k 1.2V 604k 604k 1.5V 590k 887k 1.8V 590k 1.18M 2.5V 590k 1.87M 3V 590k 2.37M 3.3V 619k 2.8M 5V 590k 4.32M Because the ADJ pin is relatively high impedance (depending on the resistor divider used), stray capacitances at this pin should be minimized. Special attention should be given to any stray capacitances that can couple external signals onto the ADJ pin producing undesirable output transients or ripple. Extra care should be taken in assembly when using high valued resistors. Small amounts of board contamination can lead to significant shifts in output voltage. Appropriate post-assembly board cleaning measures should IN VIN VOUT OUT LT3009 SHDN GND R2 ADJ R1 3009 F0 Figure 1. Adjustable Operation 3009fb 12 LT3009 Series APPLICATIONS INFORMATION be implemented to prevent board contamination. If the board is to be subjected to humidity cycling or if board cleaning measures cannot be guaranteed, consideration should be given to using resistors an order of magnitude smaller than in Table 1 to prevent contamination from causing unwanted shifts in the output voltage. Output Capacitance and Transient Response The LT3009 is stable with a wide range of output capacitors. The ESR of the output capacitor affects stability, most notably with small capacitors. Use a minimum output capacitor of 1μF with an ESR of 3Ω or less to prevent oscillations. The LT3009 is a micropower device and output load transient response is a function of output capacitance. Larger values of output capacitance decrease the peak deviations and provide improved transient response for larger load current changes. Give extra consideration to the use of ceramic capacitors. Manufacturers make ceramic capacitors with a variety of dielectrics, each with different behavior across temperature and applied voltage. The most common dielectrics 20 are specified with EIA temperature characteristic codes of Z5U, Y5V, X5R and X7R. The Z5U and Y5V dielectrics provide high C-V products in a small package at low cost, but exhibit strong voltage and temperature coefficients as shown in Figures 2 and 3. When used with a 5V regulator, a 16V 10μF Y5V capacitor can exhibit an effective value as low as 1μF to 2μF for the DC bias voltage applied and over the operating temperature range. The X5R and X7R dielectrics yield more stable characteristics and are more suitable for use as the output capacitor. The X7R type has better stability across temperature, while the X5R is less expensive and is available in higher values. One must still exercise care when using X5R and X7R capacitors; the X5R and X7R codes only specify operating temperature range and maximum capacitance change over temperature. Capacitance change due to DC bias with X5R and X7R capacitors is better than Y5V and Z5U capacitors, but can still be significant enough to drop capacitor values below appropriate levels. Capacitor DC bias characteristics tend to improve as component case size increases, but expected capacitance at operating voltage should be verified. 40 BOTH CAPACITORS ARE 16V, 1210 CASE SIZE, 10μF 20 X5R CHANGE IN VALUE (%) CHANGE IN VALUE (%) 0 –20 –40 –60 Y5V –80 –100 –20 –40 2 4 8 6 10 12 DC BIAS VOLTAGE (V) 14 16 3009 F02 Figure 2. Ceramic Capacitor DC Bias Characteristics Y5V –60 –80 0 X5R 0 BOTH CAPACITORS ARE 16V, 1210 CASE SIZE, 10μF –100 –50 –25 50 25 75 0 TEMPERATURE (°C) 100 125 3009 F03 Figure 3. Ceramic Capacitor Temperature Characteristics 3009fb 13 LT3009 Series APPLICATIONS INFORMATION Voltage and temperature coefficients are not the only sources of problems. Some ceramic capacitors have a piezoelectric response. A piezoelectric device generates voltage across its terminals due to mechanical stress, similar to the way a piezoelectric accelerometer or microphone works. For a ceramic capacitor, the stress can be induced by vibrations in the system or thermal transients. The resulting voltages produced can cause appreciable amounts of noise, especially when a ceramic capacitor is used for noise bypassing. A ceramic capacitor produced Figure 4’s trace in response to light tapping from a pencil. Similar vibration induced behavior can masquerade as increased output voltage noise. VOUT = 0.6V COUT = 22μF ILOAD = 10μA VOUT 500μV/DIV 100ms/DIV 3009 F04 Figure 4. Noise Resulting from Tapping on a Ceramic Capacitor Thermal Considerations The LT3009’s maximum rated junction temperature of 125°C limits its power-handling capability. Two components comprise the power dissipated by the device: 1. Output current multiplied by the input/output voltage differential: IOUT • (VIN – VOUT) 2. GND pin current multiplied by the input voltage: IGND • VIN GND pin current is found by examining the GND Pin Current curves in the Typical Performance Characteristics section. Power dissipation equals the sum of the two components listed prior. The LT3009 regulator has internal thermal limiting designed to protect the device during overload conditions. For continuous normal conditions, do not exceed the maximum junction temperature rating of 125°C. Carefully consider all sources of thermal resistance from junction to ambient including other heat sources mounted in proximity to the LT3009. For surface mount devices, heat sinking is accomplished by using the heat spreading capabilities of the PC board and its copper traces. Copper board stiffeners and plated through-holes can also be used to spread the heat generated by power devices. 3009fb 14 LT3009 Series APPLICATIONS INFORMATION The following tables list thermal resistance for several different board sizes and copper areas. All measurements were taken in still air on 3/32" FR-4 board with one ounce copper. Table 2: Measured Thermal Resistance for DC Package COPPER AREA Calculating Junction Temperature Example: Given an output voltage of 3.3V, an input voltage range of 12V ±5%, an output current range of 0mA to 20mA and a maximum ambient temperature of 85°C, what will the maximum junction temperature be for an application using the DC package? TOPSIDE* BACKSIDE BOARD AREA THERMAL RESISTANCE (JUNCTION-TO-AMBIENT) 2500mm2 2500mm2 2500mm2 65°C/W 1000mm2 2500mm2 2500mm2 70°C/W 225mm2 2500mm2 2500mm2 75°C/W 100mm2 2500mm2 2500mm2 80°C/W IOUT(MAX) = 20mA 50mm2 2500mm2 2500mm2 85°C/W VIN(MAX) = 12.6V *Device is mounted on the topside. TOPSIDE* BACKSIDE BOARD AREA THERMAL RESISTANCE (JUNCTION-TO-AMBIENT) 2500mm2 2500mm2 2500mm2 75°C/W 1000mm2 2500mm2 2500mm2 80°C/W 225mm2 2500mm2 2500mm2 85°C/W 100mm2 2500mm2 2500mm2 90°C/W 50mm2 2500mm2 2500mm2 95°C/W *Device is mounted on the topside. IOUT(MAX) (VIN(MAX) – VOUT) + IGND (VIN(MAX)) where, IGND at (IOUT = 20mA, VIN = 12.6V) = 0.45mA Table 3: Measured Thermal Resistance for SC70 Package COPPER AREA The power dissipated by the device is equal to: So, P = 20mA(12.6V – 3.3V) + 0.45mA(12.6V) = 191.7mW The thermal resistance will be in the range of 65°C/W to 85°C/W depending on the copper area. So the junction temperature rise above ambient will be approximately equal to: 0.1917W(75°C/W) = 14.4°C The maximum junction temperature equals the maximum junction temperature rise above ambient plus the maximum ambient temperature or: TJ(MAX) = 85°C + 14.4°C = 99.4°C 3009fb 15 LT3009 Series APPLICATIONS INFORMATION Protection Features The LT3009 incorporates several protection features that make it ideal for use in battery-powered circuits. In addition to the normal protection features associated with monolithic regulators, such as current limiting and thermal limiting, the device also protects against reverse-input voltages, reverse-output voltages and reverse output-toinput voltages. Current limit protection and thermal overload protection protect the device against current overload conditions at the output of the device. For normal operation, do not exceed a junction temperature of 125°C. The LT3009 IN pin withstands reverse voltages of 22V. The device limits current flow to less than 1mA (typically less than 220μA) and no negative voltage appears at OUT. The device protects both itself and the load against batteries that are plugged in backwards. The SHDN pin cannot be driven below GND unless tied to the IN pin. If the SHDN pin is driven below GND while IN is powered, the output will turn on. SHDN pin logic cannot be referenced to a negative rail. The LT3009 incurs no damage if OUT is pulled below ground. If IN is left open circuit or grounded, OUT can be pulled below ground by 22V. No current flows from the pass transistor connected to OUT. However, current flows in (but is limited by) the resistor divider that sets output voltage. Current flows from the bottom resistor in the divider and from the ADJ pin’s internal clamp through the top resistor in the divider to the external circuitry pulling OUT below ground. If IN is powered by a voltage source, OUT sources current equal to its current limit capability and the LT3009 protects itself by thermal limiting if necessary. In this case, grounding the SHDN pin turns off the LT3009 and stops OUT from sourcing current. The LT3009 incurs no damage if the ADJ pin is pulled above or below ground by 22V. If IN is left open circuit or grounded, ADJ acts like a 100k resistor in series with a diode when pulled above or below ground. In circuits where a backup battery is required, several different input/output conditions can occur. The output voltage may be held up while the input is either pulled to ground, pulled to some intermediate voltage or is left open circuit. Current flow back into the output follows the curve shown in Figure 5. If the LT3009 IN pin is forced below the OUT pin or the OUT pin is pulled above the IN pin, input current typically drops to less than 1μA. This occurs if the LT3009 input is connected to a discharged (low voltage) battery and either a backup battery or a second regulator circuit holds up the output. The state of the SHDN pin has no effect in the reverse current if OUT is pulled above IN. 100 REVERSE CURRENT (μA) 90 80 70 ADJ CURRENT 60 50 40 30 20 OUT CURRENT 10 0 0 1 2 3 4 5 6 7 8 9 OUTPUT AND ADJ VOLTAGE (V) 10 3009 F05 Figure 5. Reverse Output Current 3009fb 16 LT3009 Series TYPICAL APPLICATIONS Keep-Alive Power Supply NO PROTECTION DIODES NEEDED! VIN 12V IN 1μF 3.3V OUT 1μF LT3009-3.3 LOAD: SYSTEM MONITOR, VOLATILE MEMORY, ETC. SHDN GND 3009 TA02 Last-Gasp Circuit LINE POWER VLINE 12V TO 15V SENSE DCHARGE LINE INTERRUPT DETECT RLIMIT IN SUPERCAP 1μF OUT LT3009-5 5V PWR 1μF FAULT GND TO MONITORING CENTER 3009 TA03 SHDN GND 3009fb 17 LT3009 Series PACKAGE DESCRIPTION DC Package 6-Lead Plastic DFN (2mm × 2mm) (Reference LTC DWG # 05-08-1703) R = 0.115 TYP 0.56 p 0.05 (2 SIDES) 0.675 p0.05 2.50 p0.05 1.15 p0.05 0.61 p0.05 (2 SIDES) PIN 1 BAR PACKAGE TOP MARK OUTLINE (SEE NOTE 6) 0.38 p 0.05 4 2.00 p0.10 (4 SIDES) PIN 1 CHAMFER OF EXPOSED PAD 3 0.25 p 0.05 0.50 BSC 1.42 p0.05 (2 SIDES) 0.200 REF RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 6 0.75 p0.05 1 (DC6) DFN 1103 0.25 p 0.05 0.50 BSC 1.37 p0.05 (2 SIDES) 0.00 – 0.05 BOTTOM VIEW—EXPOSED PAD NOTE: 1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WCCD-2) 2. DRAWING NOT TO SCALE 3. ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON THE TOP AND BOTTOM OF PACKAGE 3009fb 18 LT3009 Series PACKAGE DESCRIPTION SC8 Package 8-Lead Plastic SC70 (Reference LTC DWG # 05-08-1639 Rev Ø) 0.30 MAX 0.50 REF PIN 8 1.80 – 2.20 (NOTE 4) 1.00 REF INDEX AREA (NOTE 6) 1.80 – 2.40 1.15 – 1.35 (NOTE 4) 2.8 BSC 1.8 REF PIN 1 RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.10 – 0.40 0.50 BSC 0.15 – 0.27 8 PLCS (NOTE 3) 0.80 – 1.00 0.00 – 0.10 REF 1.00 MAX GAUGE PLANE 0.15 BSC 0.26 – 0.46 0.10 – 0.18 (NOTE 3) SC8 SC70 0905 REV Ø NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING 4. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR 5. MOLD FLASH SHALL NOT EXCEED 0.254mm 6. DETAILS OF THE PIN 1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED WITHIN THE INDEX AREA 7. EIAJ PACKAGE REFERENCE IS EIAJ SC-70 AND JEDEC MO-203 VARIATION BA 3009fb Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights. 19 LT3009 Series RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LT1761 100mA, Low Noise Micropower LDO VIN : 1.8V to 20V, VOUT = 1.22V, VDO = 0.3V, IQ = 20μA, ISD < 1μA, Low Noise < 20μVRMS , Stable with 1μF Ceramic Capacitors, ThinSOTTM Package LT1762 150mA, Low Noise Micropower LDO VIN : 1.8V to 20V, VOUT = 1.22V, VDO = 0.3V, IQ = 25μA, ISD < 1μA, Low Noise < 20μVRMS , MS8 Package LT1763 500mA, Low Noise Micropower LDO VIN : 1.8V to 20V, VOUT = 1.22V, VDO = 0.3V, IQ = 30μA, ISD < 1μA, Low Noise < 20μVRMS , S8 Package LT1764/LT1764A 3A, Low Noise, Fast Transient Response LDOs VIN : 2.7V to 20V, VOUT = 1.21V, VDO = 0.34V, IQ = 1mA, ISD < 1μA, Low Noise < 40μVRMS , “A” Version Stable with Ceramic Capacitors, DD and TO220-5 Packages LTC1844 150mA, Low Noise Micropower VLDO VIN : 1.6V to 6.5V, VOUT(MIN) = 1.25V, VDO = 0.09V, IQ = 35μA, ISD < 1μA, Low Noise: < 30μVRMS , ThinSOT Package LT1962 300mA, Low Noise Micropower LDO VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.27V, IQ = 30μA, ISD < 1μA, Low Noise: < 20μVRMS , MS8 Package LT1963/LT1963A 1.5A, Low Noise, Fast Transient Response LDOs VIN : 2.1V to 20V, VOUT(MIN) = 1.21V, VDO = 0.34V, IQ = 1mA, ISD < 1μA, Low Noise: < 40μVRMS , “A” Version Stable with Ceramic Capacitors, DD, TO220-5, SOT223 and S8 Packages LT1964 200mA, Low Noise Micropower, Negative LDO VIN : –2.2V to –20V, VOUT(MIN) = 1.21V, VDO = 0.34V, IQ = 30μA, ISD = 3μA, Low Noise: < 30μVRMS , Stable with Ceramic Capacitors,ThinSOT Package LT3010 50mA, High Voltage, Micropower LDO VIN : 3V to 80V, VOUT(MIN) = 1.275V, VDO = 0.3V, IQ = 30μA, ISD < 1μA, Low Noise: < 100μVRMS , Stable with 1μF Output Capacitor, MS8E Package LT3012/LT3012B 250mA, High Voltage, Micropower LDOs VIN : 4V to 80V, VOUT(MIN) = 1.24V, VDO = 0.4V, IQ = 40μA, ISD < 1μA, Low Noise: <100μVRMS , Stable with 3.3μF Output Capacitor, 12-Lead 4mm × 3mm DFN and 16-Lead FE Packages LT3013/LT3013B 250mA, High Voltage, Micropower LDOs VIN : 4V to 80V, VOUT(MIN) = 1.22V, VDO = 0.4V, IQ = 40μA, ISD < 1μA, with PWRGD Low Noise: < 100μVRMS , Stable with 3.3μF Output Capacitor, 12-Lead 4mm × 3mm DFN and 16-Lead FE Packages LT3014/LT3014B 20mA, High Voltage, Micropower LDO VIN : 3V to 80V, VOUT(MIN) = 1.2V, VDO = 0.35V, IQ = 7μA, ISD < 1μA, Low Noise: < 100μVRMS , Stable with 0.47μF Output Capacitor, SOT23-5 and 3mm × 3mm DFN Packages LT3020 100mA, Low Voltage VLDO VIN : 0.9V to 10V, VOUT(MIN) = 0.20V, VDO = 0.15V, IQ = 120μA, ISD < 1μA, 3mm × 3mm DFN and MS8 Packages LT3021 500mA, Low Voltage VLDO VIN : 0.9V to 10V, VOUT(MIN) = 0.20V, VDO = 0.16V, IQ = 120μA, ISD < 3μA, 5mm × 5mm DFN and SO8 Packages LT3023 Dual 100mA, Low Noise, Micropower LDO VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 40μA, ISD < 1μA, DFN and MS10 Packages LT3024 Dual 100mA/500mA, Low Noise, Micropower LDO VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 60μA, ISD < 1μA, DFN and TSSOP16E Packages LTC3025 300mA, Low Voltage Micropower VLDO 45mV Dropout Voltage, Low Noise 110μVRMS , VIN = 1.14V to 5.5V, Low IQ: 54μA, 6-Lead 2mm × 2mm DFN Package LTC3026 1.5A, Low Input Voltage VLDO 100mV Dropout Voltage, Low Noise 80μVRMS , VIN = 0.9V to 5.5V, Low IQ: 950μA, 10-Lead 3mm × 3mm DFN and MS10E Packages LT3027 Dual 100mA, Low Noise, Micropower LDO with Independent Inputs VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 40μA, ISD < 1μA, DFN and MS10E Packages LT3028 Dual 100mA/500mA, Low Noise, Micropower LDO with Independent Inputs VIN : 1.8V to 20V, VOUT(MIN) = 1.22V, VDO = 0.30V, IQ = 60μA, ISD < 1μA, DFN and TSSOP-16E Packages ThinSOT is a trademark of Linear Technology Corporation. 3009fb 20 Linear Technology Corporation LT 0908 REV B • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com © LINEAR TECHNOLOGY CORPORATION 2007