VOL 2 Linear Low Dropout (LDO) Regulator Solutions High Performance Analog ICs L I N E A R L D O R E G U L AT O R S O L U T I O N S Introduction We offer a broad line of high performance low dropout (LDO) linear regulators with fast transient response, excellent line and load regulation, and very wide input voltage range from 0.9V to 100V. Output currents range from 20mA to 10A, with positive, negative and multiple output versions available. Many devices offer output voltage operation <0.8V and some feature operation as low as 0V, even with a single supply. Most are stable with ceramic output capacitors. Our PNP-based linear regulators offer reverse-input, reverse-output, and reverse-current protection. Our LDO+™ devices include monitoring of voltage, current, temperature and diagnostic flags that indicate fault conditions. LDO regulators can be applied in virtually any application. For the most current product information, please visit www.linear.com. Contents Single Output LDO Regulators Positive High Voltage PNP.............................................................................................................................1 PNP..................................................................................................................................................2-3 Micropower PNP..............................................................................................................................4 NPN (2nd Generation).......................................................................................................................6-7 NPN (1st Generation)........................................................................................................................8 Very Low Dropout (VLDO).................................................................................................................9 NMOS for Digital ICs.........................................................................................................................10 Radiation Hardened (RH)..................................................................................................................13 Negative NPN..................................................................................................................................................11 Radiation Hardened (RH)..................................................................................................................13 Dual Output LDO Regulators Positive.....................................................................................................................................................5 Positive/Negative......................................................................................................................................11 LDO Controllers Positive.....................................................................................................................................................12 Current Sources Current Sources.......................................................................................................................................7 L I N E A R L D O R E G U L AT O R S O L U T I O N S High Voltage PNP Positive Linear Regulators PNP family features: LT3011 Actual Size Demo Board • Rugged and Hard to Kill • Up to 80VIN Continuous Operation LT3013 Actual Size Demo Board • Low Output Voltage Noise • Extensive Reverse Protection for Harsh Environments in Automotive, Avionics and Industrial Applications LT®3011: 50mA, 3V to 80V Low Dropout Micropower Linear Regulator with PWRGD Dropout Voltage 350 VIN 3V TO 80V 1µF 1.6M LT3011 SHDN GND 750k 300 1µF ADJ PWRGD POWER GOOD VOUT 5V 50mA OUT DROPOUT VOLTAGE (mV) IN 249k CT 250 200 150 100 1000pF 50 0 LT3013: 250mA, 4V to 80V Low Dropout Micropower Linear Regulator with PWRGD 10 0 20 30 40 OUTPUT CURRENT (mA) 50 Dropout Voltage 400 1µF OUT LT3013 1.6M SHDN PWRGD GND 750k 350 DROPOUT VOLTAGE (mV) IN VIN 5.4V TO 80V VOUT 5V 250mA 3.3µF ADJ 249k CT 1000pF 300 250 200 150 100 50 0 50 0 100 150 200 250 OUTPUT CURRENT (mA) Part Number Output Current (A) Min VIN (V) Max VIN (V) Reference Voltage (V) Dropout Voltage (V@IOUT) Typ IQ (Supply) (μA) Output Voltage (V) Noise (µVRMS) or % of VOUT Temperature Grade Package High Voltage PNP Positive Linear Regulators LT3014 0.02 3.0 80 1.22 0.35 7 Adj (1.22 to 60) 115 EI TSOT-5, 3x3 DFN-8 LT3014HV 0.02 3.0 100 1.22 0.35 7 Adj (1.22 to 60) 115 EI TSOT-5, 3x3 DFN-8 LT3014B 0.02 3.0 80 1.22 0.35 7 Adj (1.22 to 60) 115 EI TSOT-5, 3x3 DFN-8 LT3014BHV 0.02 3.0 100 1.22 0.35 7 Adj (1.22 to 60) 115 EI TSOT-5, 3x3 DFN-8 LT3010 0.05 3.0 80 1.275 0.30 30 Adj (1.275 to 60), 5 100 E H MP MSOP-8E LT3011*† 0.05 3.0 80 1.24 0.30 45 Adj (1.24 to 60) 100 EIH MSOP-12E, 3x3 DFN-10 LT3012 0.25 4.0 80 1.24 0.40 40 Adj (1.24 to 60) 100 EH TSSOP-16E, 3x4 DFN-12 LT3012B 0.25 4.0 80 1.24 0.40 40 Adj (1.24 to 60) 100 E TSSOP-16E, 3x4 DFN-12 LT3013*† 0.25 4.0 80 1.24 0.40 65 Adj (1.24 to 60) 100 E H MP TSSOP-16E, 3x4 DFN-12 LT3013B*† 0.25 4.0 80 1.24 0.40 65 Adj (1.24 to 60) 100 E TSSOP-16E, 3x4 DFN-12 * Power Good † LDO+ 1 L I N E A R L D O R E G U L AT O R S O L U T I O N S PNP Positive Linear Regulators LT3086 Actual Size Demo Board PNP family features: • Low Output Voltage Noise • Wide Voltage Range • Low Dropout Voltage LT3055 Actual Size Demo Board • Fast Transient Response and Extensive Reverse Protection • Precision Current Limits LT3086: 1.5A Rail-to-Rail, Low Dropout PNP Linear Regulator with Monitoring and Cable Drop Compensation RMON 357Ω 1% SET TEMP TRACK IMON ILIM CDC RPWRGD RCDC 1% 82.5k 10µF 1% 100k RCDC 1% PWRGD GND VLOAD 5V AT 2.1A OUTPUT VOLTAGE (V) SHDN RSET 90.9k + 1.1k 1% 5.6 VPWRGD LT3055: 500mA Linear Regulator with Precision Current Limit and Diagnostics 5.0 VLOAD WITH CDC 4.8 4.6 VLOAD WITHOUT CDC I LOAD = 0.5A TO 1.5A 2 1 0 08 0 160 240 320 400 480 560 640 720 800 TIME (µs) External Current Limit RIMAX = 604Ω 550 LT3055 VOUT WITH CDC 5.2 VIN = 6V RMON = 357 RWIRE = 0.24 RCDC = 46.4k 4.2 RLINE2 *SEE APPLICATIONS INFORMATION FOR INDUCTANCE EFFECTS ASSOCIATED WITH RWIRE 5.4 4.4 LOAD CURRENT (A) TO ADC 0.8V AT 2.24A FULL-SCALE LT3086 10µF VTEMP 10mV/°C 25°C = 250mV OUT 5.8 CABLE RLINE1 CURRENT LIMIT FAULT THRESHOLD (mA) VIN 6V TO 15V IN VOUT Transient Response with Cable Drop Compensation (CDC) LOAD 2 540 VOUT(NOMINAL) = 5V 530 520 510 500 490 VIN = 7V VIN = 5.6V 480 470 460 450 –75 –50 –25 0 25 50 75 100 125 150 175 TEMPERATURE (°C) L I N E A R L D O R E G U L AT O R S O L U T I O N S Part Number Output Current (A) Min VIN (V) Max VIN (V) Reference Voltage (V) Dropout Voltage (V@IOUT) Typ IQ (Supply) (μA) Output Voltage (V) Noise (µVRMS) or % of VOUT Temperature Grade Package PNP Positive Linear Regulators LT1761 0.1 1.8 20 1.22 0.30 20 Adj (1.22 to 19.5), 1.2, 1.5, 1.8, 2, 2.5, 2.8, 3, 3.3, 5 20 E I MP TSOT-5 LT3050§ 0.1 1.6 45 0.60 0.34 45 Adj (0.6 to 44.5), 3.3, 5 30 E I MP 2x3 DFN-12, MSOP-12E LT3060 0.1 1.6 45 0.60 0.30 40 Adj (0.6 to 44.5), 1.2, 1.5, 1.8, 2.5, 3.3, 5, 15 30 E I H MP 2x2 DFN-8, TSOT-8 LT3061# 0.1 1.6 45 0.60 0.25 45 Adj (0.6 to 19) 30 E I H MP 2x3 DFN-8, MSOP-8E LT1020 0.125 4.5 36 2.50 0.40 40 Adj – CI SO-16, DIP-14 LT1120/A 0.125 4.5 36 2.50 0.40 40 Adj – CI SO-8, DIP-8 LT1121/A/HV 0.15 4.2 30/36 3.75 0.42 30 Adj (3.75 to 29/35), 3.3, 5 – CI SOT-223, SO-8, TO-92, DIP-8 LT1762 0.15 1.8 20 1.22 0.27 25 Adj (1.22 to 19.5), 2.5, 3, 3.3, 5 20 E MSOP-8 LT3062 0.2 1.6 45 0.60 0.30 45 Adj (0.6 to 40) 30 E I H MP 2x3 DFN-8, MSOP-8E LT3063# 0.2 1.6 45 0.60 0.30 45 Adj (0.6 to 19) 30 E I H MP 2x3 DFN-8, MSOP-8E LT1521 0.3 4.3 20 3.75 0.50 12 Adj (3.75 to 19), 3, 3.3, 5 – CI SOT-223, SO-8, MSOP-8 LT1579 0.3 2.7 20 1.50 0.40 50 Adj (1.5 to 19), 3, 3.3, 5 – C SO-8, SO-16, SSOP-16 LT1962 0.3 1.8 20 1.22 0.27 30 Adj (1.22 to 19.5), 1.5, 1.8, 2.5, 3, 3.3, 5 20 E MSOP-8 LT1763 0.5 1.8 20 1.22 0.30 30 Adj (1.22 to 19.5), 1.5, 1.8, 2.5, 3, 3.3, 5 20 C I MP 3x4 DFN-12, SO-8, LT3055‡§ 0.5 2.0 45 0.60 0.35 65 Adj (0.6 to 44.5) 25 E I H MP 3x4 DFN-16, MSOP-16E LT3065‡§ 0.5 2.0 45 0.60 0.30 55 Adj (0.6 to 44.5) 25 E I H MP 3x3 DFN-10, MSOP-12E LT1129 0.7 4.2 30 3.75 0.40 50 Adj (3.75 to 29), 3.3, 5 – E I MP DD-Pak, SOT-223, SO-8, TO-220, TSSOP-20 LT1965 1.1 1.8 20 1.20 0.31 500 Adj (1.2 to 19.5), 1.5, 1.8, 2.5, 3.3 40 EIH 3x3 DFN-8, MSOP-8E, DD-Pak, TO-220 LT1963/A* 1.5 2.1 20 1.21 0.34 1mA Adj (1.21 to 19.5), 1.5, 1.8, 2.5, 3.3 40 E I MP TSSOP-16E, DD-Pak, TO-220, SOT-223, SO-8 LT3081†§ 1.5 1.2 36 50µA 1.21 1.1mA Adj (0 to 34.5) 27 E I H MP 4x4 DFN-12, TSSOP-16E, TO-220, DD-Pak LT3086 ‡§ 2.1 1.4 40 400mV/50µA 0.33 1.2mA Adj (0.4 to 32)† 40 E I MP TSSOP-16E, 4x5 DFN-16, DD-Pak, TO-220 LT1528 3.0 3.9 15 3.30 0.60 400 Adj (3.3 to 14), 3.3 – C DD-Pak, TO-220 LT1529 3.0 3.9 15 3.75 0.60 50 Adj (3.75 to 14), 3.3, 5 – CI DD-Pak, TO-220 LT1764/A* 3.0 2.7 20 1.21 0.34 1mA Adj (1.21 to 19.5), 1.5, 1.8, 2.5, 3.3 40 E MP DD-Pak, TO-220, TSSOP-16E *“A” Versions are stable with ceramic capacitors † Single-Resistor VOUT Set ‡ Power Good # Active Discharge § LDO+ 3 L I N E A R L D O R E G U L AT O R S O L U T I O N S Micropower PNP Positive Linear Regulators Micropower PNP family features: LT3008 Actual Size Demo Board • Sub-5µA Quiescent Current • Good Output Noise Performance • Keep Alive, Real-Time Clock and Remote Monitoring Applications LT3007: 3µA IQ, 20mA, 45V Low Dropout Fault Tolerant Linear Regulator Dropout Voltage/Quiescent Current 500 450 2.2µF LT3007-3.3 DROPOUT VOLTAGE (mV) 1µF SENSE SHDN DROPOUT VOLTAGE GND 5 350 4 300 250 3 IQ 200 2 150 100 QUIESCENT CURRENT (µA) OUT IN VIN 3.8V TO 45V 6 ILOAD = 20mA 400 VOUT 3.3V 20mA 1 50 0 -50 -25 0 0 25 50 75 100125150 TEMPERATURE (°C) LT3009: 3µA IQ, 20mA Low Dropout Linear Regulator Dropout Voltage/Quiescent Current 500 450 1µF LT3009-3.3 1µF 4.5 4.0 SHDN GND 350 DROPOUT VOLTAGE 300 IQ 250 3.5 3.0 2.5 200 2.0 150 1.5 100 1.0 50 0.5 0 -50 -25 0 QUIESCENT CURRENT (µA) OUT IN VIN 3.75V TO 20V 5.0 ILOAD = 20mA 400 VOUT 3.3V 20mA DROPOUT VOLTAGE (mV) 4 0 25 50 75 100125150 TEMPERATURE (°C) Part Number Output Current (A) Min VIN (V) Max VIN (V) Reference Voltage (V) Dropout Voltage (V@IOUT) Typ IQ (Supply) (μA) Output Voltage (V) Noise (µVRMS) or % of VOUT Temperature Grade Package Micropower PNP Positive Linear Regulators LT3009 0.02 1.6 20 0.60 0.28 3 Adj (0.6 to 19.5), 1.2, 1.5, 1.8, 2.5, 3.3, 5 150 EI SC70-8, 2x2 DFN-6 LT3007* 0.02 2.0 45 0.60 0.30 3 Adj (0.6 to 44.5), 1.2, 1.5, 1.8, 2.5, 3.3, 5 92 EI TSOT-8 LT3008 0.02 2.0 45 0.60 0.30 3 Adj (0.6 to 44.5), 1.2, 1.5, 1.8, 2.5, 3.3, 5 92 E I MP TSOT-8, 2x2 DFN-6 *FMEA Fault Tolerant version L I N E A R L D O R E G U L AT O R S O L U T I O N S Dual Output PNP Linear Regulators LT3030 Actual Size Demo Board Dual linear regulator family features: • Highly Compact Solution • All the Performance Features of our Single PNP Regulators LT3032 Actual Size Demo Board • Ideal for Core/Logic Combinations LT3030: Dual 750mA/250mA Low Dropout, Low Noise Micropower Linear Regulator IN1 3.3µF OUT1 1M 10nF LT3030 IN2 SHDN1 BYP1 SHDN2 ADJ1 10µF 500 VOUT1 1.8V 750mA 400 113k 1% 237k 1% 1M PWRGD1 PWRGD2 OUT2 10nF 3.3µF 54.9k 1% BYP2 VOUT2 1.5V 250mA 5.4V TO 20V <0.25V = OFF >2V = ON SHDNP Part Number Output Current (A) 0 75 150 225 300 375 450 525 600 675 750 OUTPUT CURRENT (mA) 0.01µF 10µF 0.01µF 10µF –5V OUT AT –150mA 30µVRMS NOISE OUTP 100µV/DIV 20µVRMS OUTN 100µV/DIV 30µVRMS GND 10µF Min VIN (V) OUT1 150 10Hz to 100kHz Output Noise BYPN INN 200 BYPP SHDNN –5.4V TO –20V OUT2 250 0 5V OUT AT 150mA 20µVRMS NOISE OUTP LT3032-5 10µF 300 50 237k 1% LT3032: Dual 150mA Positive/Negative Low Noise Regulator INP 350 100 ADJ2 GND TJ = 25°C 450 DROPOUT VOLTAGE (mV) VIN 2.5V Dropout Voltage vs Load Current OUTN Max VIN (V) 1mS/DIV Reference Voltage (V) Dropout Voltage (V@IOUT) Typ IQ (Supply) (μA) Output Voltage (V) Noise (µVRMS) or % of VOUT Temperature Grade Package Dual Output Positive Linear Regulators LT3023 0.1/0.1 1.8 20 1.22 0.30 40 Adj (1.22 to 20) 20 EI MSOP-10E, 3x3 DFN-10 LT3027 0.1/0.1 1.8 20 1.22 0.30 50 Adj (1.22 to 20) 20 EI MSOP-10E, 3x3 DFN-10 LT3024 0.1/0.5 1.8 20 1.22 0.30 60 Adj (1.22 to 20) 20 EI TSSOP-16E, 3x4 DFN-12 LT3028 0.1/0.5 1.8 20 1.22 0.30 60 Adj (1.22 to 20) 20 EI TSSOP-16E, 3x5 DFN-16 LT3029 0.5/0.5 1.8 20 1.215 0.30 110 Adj (1.215 to 19.5) 20 E I H MP MSOP-16E, 3x4 DFN-16 LT3030* 0.75/0.25 1.7 20 1.22 0.30 195 Adj (1.22 to 19.5) 20 E I H MP 4x5 QFN-28, TSSOP-20E 60 Adj, ±3.3, ±5, ±12, ±15 20 / 30 E I MP 3x4 DFN-14 Dual Output Positive and Negative Linear Regulators LT3032 * Power Good ±0.15 ±1.8 ±20 ±1.22 0.30/-0.34 5 L I N E A R L D O R E G U L AT O R S O L U T I O N S Single Resistor Set, Current Reference-Based NPN/PNP Positive Linear Regulators Second generation NPN family features: LT3081 Actual Size Demo Board • Operation Down to 0V Output • Direct Paralleling to Spread PCB Heat • Low Noise and Simplicity with a Single Resistor VOUT Set Capability • Always Operates in Unity-Gain LT3083 Actual Size Demo Board —— Bandwidth Independent of Output Voltage —— Output Noise Independent of Output Voltage —— Load Regulation Independent of Output Voltage LT3081: Wide Safe Operating Area (SOA) LT3081: 1.5A Single Resistor Rugged Linear Regulator with Monitors 3.0 VIN ILOAD/5000 2.5 IN LT3081 1µA/°C Older Regulator 2.0 50µA + – IMON TEMP SET 1k 1k 30.1k IOUT 1.5V 1.5A OUT ILIM 10µF* 300Ω* Current Limit (A) 6 LT3081 1.5 Increased Safe Area 1.0 0.5 6.04k Older Regulator *OPTIONAL 0 0 5 10 15 20 25 30 35 40 Input-to-Output Differential Voltage (V) LT3083: Adjustable 3A Single Resistor Low Dropout Regulator V CONTROL 3.3V 4.7µF V CONTROL V IN 1.5V IN 10µF LT3083 OUT 10µF SET R SET 18.2k 1% 0.1µF * R MIN 909 Ω V OUT = 0.9V I MAX = 3A *OPTIONAL FOR MINIMUM 1mA LOAD REQUIREMENT LT3080 Actual Size Demo Board L I N E A R L D O R E G U L AT O R S O L U T I O N S Part Number Output Current (A) Min VIN (V) Max VIN (V) Reference Current (µA) Dropout Voltage (V@IOUT) Typ IQ (Supply) (μA) Output Voltage (V) Noise (µVRMS) w/ CSET Temperature Grade Package 0V Output Capable, Single-Resistor Set, Current Reference-Based NPN Positive Linear Regulators LT3082 § 0.2 1.2 40 10 1.30 500μA Adj (0 to 38.5) 33 E I MP 3x3 DFN-8, TSOT-23-8, SOT-223 LT3085 0.5 1.2 36 10 0.275‡ 1mA Adj (0 to 35.7) 33 E I MP 2x3 DFN-6, MSOP-8E LT3080 1.1 1.2 36 10 0.35‡ (1.35, SOT-223) 1mA Adj (0 to 35.7) 40 EI 3x3 DFN-8, MSOP-8E, SOT-223, TO-220, DD-Pak LT3080-1* 1.1 1.2 36 10 0.35‡ 1mA Adj (0 to 35.7) 40 EI 3x3 DFN-8, MSOP-8E LT3081# ¤ 1.5 1.2 36 50 1.23 1.1mA Adj (0 to 34.5) 40 EI 4x4 DFN-12, TSSOP-16E, TO-220, DD-Pak LT3086# § ¤ 2.1 1.4 40 50 0.33 1.2mA Adj (0.4 to 32) 40 E I MP 4x5 DFN-16, TSSOP-16E, TO-220, DDPak LT3083 3 1.2 8/18† 50 0.31‡ 1mA Adj (0 to 7.5 or 0 to 17.5†) 40 E I MP 4x4 DFN-12, TSSOP-16E, TO-220, DD-Pak * Integrated Ballast Resistor † DD-Pak and TO-220 Packages ‡ Dual-Supply Operation #Power Good § PNP pass transistor ¤ LDO+ Part Number Output Current Range (mA) Initial Accuracy (%) Min VIN (V) Max VIN (V) Current Regulation (ppm/V) Quiescent Current (µA) Reverse Voltage Protection Reverse Current Protection Current Limiting Thermal Protection Temperature Grade Package Current Sources LM334 1µA to 10mA 3 0.8 40 200 280 — yes — — C T0-92, SO-8 LT3092 0.5 to 200 1 1.2 40 <10 300 yes yes yes yes E I MP TSOT-8, SOT-223, 3x3 DFN-8 7 L I N E A R L D O R E G U L AT O R S O L U T I O N S NPN Positive Linear Regulators First generation NPN positive linear regulator family: • Based on Classic 3-Terminal Architecture • Wide Input Voltage • Wide Output Voltage LT®1584/5A/7: Low Dropout Fast Response Positive Regulator Adjustable & Fixed Dropout Voltage vs Output Current 1.5 VIN ≥ 4.75V + LT1584-3.3 LT1585-3.3 LT1587-3.3 C1 10µF 1.4 + 3.3V 7A, 4.6A, 3A INPUT/OUTPUT DIFFERENTIAL (V) 8 C2* SOLID TANTALUM * REQUIRED FOR STABILITY LT1584: C2 = 22µF, LT1585/LT1587: C2 = 10µF 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0 I FULL LOAD OUTPUT CURRENT (A) Part Number Output Current (A) Min VIN (V) Max VIN (V) Reference Voltage (V) Dropout Voltage (V@IOUT) Typ IQ (Supply) (mA) Output Voltage (V) Noise (µVRMS) or % of VOUT Temperature Grade Package NPN Positive Linear Regulators LT1117 0.8 2.5 15 1.25 1.20 5 Adj, 2.85, 3.3, 5 0.003% CI DD-Pak, SOT-223 LT1118 –0.4/0.8 3.0 15 1.225 1.00 0.6 Adj, 2.5, 2.85, 5 – C SO-8, SOT-223 LT1086 1.5 2.6 25 1.25 1.30 5 Adj, 2.85, 3.3, 3.6, 5, 12 0.003% CI DD-Pak, TO-220 LT1085 3 2.6 30 1.25 1.30 5 Adj, 3.3, 3.6, 5, 12 0.003% CI DD-Pak, TO-220, TO-3P LT1587 3 2.7 7 1.25 1.20 8 Adj, 1.5, 3.3, 3.38, 3.45, 3.6 0.003% C DD-Pak, TO-220 LT1585 4.6 2.4 7 1.25 1.10 8 Adj, 1.5, 3.3, 3.38, 3.45, 3.6 0.003% C DD-Pak, TO-220 LT1585A 5 2.5 7 1.25 1.20 8 Adj, 1.5, 3.3 0.003% C DD-Pak, TO-220 LT1084 5 2.6 30 1.25 1.30 5 Adj, 3.3, 3.6, 5, 12 0.003% CI DD-Pak, TO-220, TO-3P LT1584 7 2.5 7 1.25 1.25 8 Adj, 3.3, 3.38, 3.45, 3.6 0.003% CI DD-Pak, TO-220 LT1580 7 1.8* 6 1.25 0.54‡ 10 Adj, 2.5 – CI DD-Pak, TO-220 LT1083 7.5 2.6 30 1.25 1.30 5 Adj, 3.3, 3.6, 5, 12 0.003% C DD-Pak, TO-220 LT1581 10 1.7* 6 1.25 0.43‡ 10 Adj, 2.5 – C TO-220 * Dual-Supply Operation L I N E A R L D O R E G U L AT O R S O L U T I O N S Very Low Dropout (VLDO) Positive Linear Regulators LT3022 Actual Size Demo Board VLDO™ regulator family features: LTC3025-x Actual Size Demo Board • Input Voltage Operation Down to 0.9V • Output Voltage Down to 0.2V • Typical Dropout Performance ≤ 150mV Enabling low VIN-to-VOUT Differential Applications Minimum Input Voltage 1.1 LT3022: 1A, 0.9V to 10V, Very Low Dropout Linear Regulator IN 10µF OUT SHDN VOUT 0.9V 1A 10µF 698 1% LT3022 0.9 MINIMUM INPUT VOLTAGE (V) VIN 1.2V ADJ 200 1% GND I L = 1A 1.0 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 –50 LTC®3025-x: 500mA Positive Low Noise LDO Regulator –25 0 50 25 75 TEMPERATURE (°C) 100 125 1MHz VIN Supply Rejection 50 BIAS 1.5V HIGH EFFICIENCY DC/DC BUCK 0.1µF 1µF LTC3025-2 1.5V IN SENSE SHDN GND COUT = 10µF 40 35 0.1µF OFF ON 45 VOUT = 1.2V IOUT ≤ 500mA REJECTION (dB) Li-Ion OR 3-CELL NiMH OUT COUT = 1µF 30 25 20 15 10 5 BIAS = 3.6V VOUT = 1.2V 0 1.6 1.2 1.4 Part Number Output Current (A) Min VIN (V) Max VIN (V) Reference Voltage (V) Dropout Voltage (V@IOUT) Typ IQ (Supply) (μA) Output Voltage (V) IOUT = 100mA IOUT = 300mA 1.8 2.0 VIN (V) 2.2 2.4 Noise (µVRMS) or % of VOUT Temperature Grade Package 2.6 VLDO Positive Linear Regulators LT3020 0.1 0.9 10 0.20 0.15 120 Adj (0.2 to 9.5), 1.2, 1.5, 1.8 245 EI MSOP-8, 3x3 DFN-8 LTC1844 0.15 1.6 6.5 1.25 0.11 35 Adj (1.25 to 6), 1.5, 1.8, 2.5, 2.8, 3.3 60 E TSOT-5 LTC3025 0.3 0.9 5.5 0.40 0.045 54 Adj (0.4 to 3.6) 80 E 2x2 DFN-6 LTC3035 0.3 1.7 5.5 0.40 0.05 100 Adj (0.4 to 3.6) 150 E 2x3 DFN-8 LT3021 0.5 0.9 10 0.20 0.16 120 Adj (0.2 to 9.5), 1.2, 1.5, 1.8 300 EI 5x5 DFN-16, SO-8 LTC3025-x 0.5 0.9 5.50 0.40 0.08 54 Adj (0.4 to 3.6), 1.2, 1.5, 1.8 80 EI 2x2 DFN-6 LT3022 1.0 0.95 10 0.20 0.15 400 Adj (0.2 to 9.5), 1.2, 1.5, 1.8 165 EI 3x5 DFN-16, TSSOP-16E LTC3026‡ 1.5 1.14 3.5/5.5 0.40 0.10 400# Adj (0.4 to 2.6) 110* or 210† EI 3x3 DFN-10, MSOP-10E * Boost Disabled † Boost Enabled ‡ LDO+ # VIN = 3.5V 9 L I N E A R L D O R E G U L AT O R S O L U T I O N S NMOS Positive Linear Regulators for Digital IC Power LT3070 Actual Size Demo Board Our family of NMOS positive linear regulators has the performance demanded by modern high current, low voltage digital ICs: • Ultrafast Transient Response • Very Low Dropout Voltage • High Output Current • Low Output Voltage • Good Power Supply Rejection Ratio (PSRR) • VIOC—Control of Upstream Buck Regulator for VIN to VOUT Regulation across LT3070/71 LT3070: 5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator Dropout Voltage 50k VBIAS 2.2V TO 3.6V 150 PWRGD VIN 1.2V 330µF 120 BIAS IN PWRGD EN SENSE VO0 VOUT 0.9V 5A OUT 2.2µF* LT3070 VO1 4.7µF* 10µF* VO2 *X5R OR X7R CAPACITORS MARGSEL MARGTOL GND 1nF 90 VOUT = 1.8V VBIAS = 3.3V 60 VOUT = 0.8V VBIAS = 2.5V 30 REF/BYP VIOC 0.01µF 0 LT3071: 5A, Low Noise, Programmable Output, 85mV Dropout Linear Regulator with Analog Margining 1 0 3 2 OUTPUT CURRENT (A) 4 5 Transient Load Response 50k VBIAS 2.2V TO 3.6V PWRGD 2.2µF VIN 1.2V BIAS IN 330µF PWRGD EN SENSE VO0 VO1 OUT 2.2µF* LT3071 VO2 NC Output Current (A) 4.7µF* *X5R OR X7R CAPACITORS MARGA VIOC IMON REF/BYP GND 1nF Part Number VIN = VOUT(NOMINAL) 2.2µF DROPOUT VOLTAGE (mV) 10 Min VIN (V) 0.01µF VOUT 0.9V 10µF* 5A VOUT 50mV/DIV AC-COUPLED IOUT 2A/DIV I = 500mA TO 5A VMON 2V AT 5A FULL SCALE 1k VOUT = 1V 20µs/DIV COUT = 10µF + 4.7µF + 2.2µF IOUT tRISE/tFALL = 100ns Max VIN (V) Reference Voltage (V) Dropout Voltage (V@IOUT) Typ IQ (Supply) (μA) Output Voltage (V) Noise (µVRMS) or % of VOUT Temperature Grade Package NMOS Positive Linear Regulators LT3070*‡# 5 0.95 3 0.6 0.09 1.1mA Adj (0.8 to 1.8) 25 E I MP 4x5 QFN-28 LT3071†‡ 5 0.95 3 0.6 0.09 1.1mA Adj (0.8 to 1.8) 25 E I MP 4x5 QFN-28 LT3072‡§ 2.5/2.5 0.9 4 0.6 0.085 1.5/1.5mA Adj (0.6 to 3.3) 20 E I MP 4x7 QFN-36, TSSOP-38E * Digital Margining † Analog Output Margining ‡ LDO+ #Power Good § Future product, contact factory for information. L I N E A R L D O R E G U L AT O R S O L U T I O N S Negative Linear Regulators LT3090 Actual Size Demo Board Rugged and hard to kill negative linear regulator family features: • Low Output Voltage Noise • Wide Voltage Range • Low Dropout Voltage • Reverse Output Protection LT3090: 36V, 600mA Negative Linear Regulator with Programmable Current Limit Output Noise: 10Hz to 100kHz TO ADC (IMON) 0.1µF LT3090 49.9k 4.7µF 3.32k SET GND IMONP VOUT –2.5V MAX IOUT 600mA OUT + VOUT 100µV/DIV 1ms/DIV VIN: –3.5V VOUT: –2V COUT: 4.7µF, CSET: 0.1µF IL: 600mA – 4.7µF 50µA IMONN IN VIN –3V TO –10V 3.3V ILIM SHDN 0.1µF 10k Dropout Voltage 0.45 T J = 25°C 0.40 LT3015: 1.5A, Low Noise, Negative LDO Regulator with Precision Current Limit GND LT3015 10µF SHDN 3.48k 1% 10µF ADJ 10.5k 1% VIN –5.5V TO –30V IN DROPOUT VOLTAGE (V) 0.35 0.20 0.15 0.10 0.05 VOUT –5V –1.5A OUT 0.30 0.25 0 0 –250 –500 –750 –1000 –1250 –1500 LOAD CURRENT (mA) Part Number Output Current (A) Min VIN (V) Max VIN (V) Reference Voltage (V) Dropout Voltage (V@IOUT) Typ IQ (Supply) (μA) Output Voltage (V) Noise (µVRMS) or % of VOUT Temperature Grade Package Negative Linear Regulators LT1964 0.2 –1.9 –20 –1.22 0.34 30 Adj, –5 30 EI TSOT-5, 3x3 DFN-8 LT1175 0.5 –4.3 –20 –3.8 0.50 45 Adj, –5 134 C I MP SOT-223, SO-8, DIP-8, DD-Pak, TO-220 LT3090* 0.6 –1.5 –36 50µA 0.30 1mA Adj (0 to –32) 18 E I H MP 3x3 DFN-12, MSOP-12E LT3015 1.5 –1.8 –30 –1.22 0.31 1.1mA Adj (–1.22 to –30) 60 E I MP DD-Pak, TO-220, MSOP-12E, 3x3 DFN-8 LT1185 3.0 –4.3 –35 –2.37 0.67 2.5mA Adj (–2.37 to –30) 49 CI DD-Pak, TO-220 55 Adj, ±3.3, ±5, ±12, ±15 20 / 30 E I MP 3x4 DFN-14 Dual Output Positive and Negative Linear Regulators LT3032 * LDO+ ±0.15 ±1.9 ±20 ±1.22 0.30/-0.34 11 12 L I N E A R L D O R E G U L AT O R S O L U T I O N S Linear Regulator Controllers LT3150 Actual Size Demo Board Linear regulator controller family features: • An Off-Board Power Device • Reduced On-Chip Power Dissipation • Spreads Heat More Evenly on a PC Board Transient Response for 0.1A to 4A Output Load Step LT3150: Fast Transient Response, Low Input Voltage, LDO Controller MBR0520L + C1 4.7µF 6.19k 1% 1.37k 1% L1 10µH LT3150 VIN2 FB1 SHDN2 SWGND GND GND SW VIN1 SHDN1 IPOS INEG GATE FB2 COMP 50µV/DIV + 5.1 Si4410 243 1% 1.5k 6800pF 50pF CIN: PANASONIC SP SERIES EEFUE0E221R 20% C1: AVX TAJA475M020R 20V 20% L1: MURATA LQH32CN100K11 OR SUMIDA CDRH3D16100 VIN 1.8V CIN 220µF 2.5V x2 2.2µF x10 X5R CERAMIC 0805 CASE 1020 1% 20μS/DIV Transient Response for 0.2A to 5A Output Load Step LT1573: Low Dropout Regulator Controller CC 100pF FB CTIME RC 1k COMP LATCH 2A/DIV VOUT 1.5V 4A VOUT 50µV/DIV LT1573 + SHDN GND VIN RD 24 DRIVE RB 50 VIN 5V CIN 100F TANT COUT1 1F CER X 24 + QOUT MOTOROLA D45H11 + COUT2 220F TANT VOUT 3.3V R1 1.6k R2 1k 2.5A/DIV LOAD 10μS/DIV GND VOUT = 1.265V (1 + R1/R2) FOR T < 45C, COUT1 = 24 x 1F Y5V CERAMIC SURFACE MOUNT CAPACITORS. FOR T > 45C, COUT1 = 24 x 1F X7R CERAMIC SURFACE MOUNT CAPACITORS. PLACE COUT1 IN THE MICROPROCESSOR SOCKET CAVITY Part Number Output Current (A) Min VIN (V) Max VIN (V) Reference Voltage (V) Dropout Voltage (V@IOUT) Typ IQ (Supply) (μA) Output Voltage (V) Noise (µVRMS) or % of VOUT Temperature Grade Package Discrete Pass Element Drivers and Regulators—Very Low Dropout LT1123 3 n/a 30 5 –* 700 5 – C SOT-223, TO-92 LT1573 5* 2.8 10 1.265 –* 1.7mA Adj, 2.5, 2.8, 3.3 – CI SO-8 LT3150 10* 1.4 10 1.23 0.13 12mA Adj – C SSOP-16 LT1575 –* n/a 22 1.21 –* 12mA Adj, 1.5, 2.8, 3.3, 5 – C DIP-8, SO-8 LT1577 –* n/a 22 1.21 –* 12mA Adj, 2.8, 3.3 – C SO-16 * Depends On Selection of External Pass Device L I N E A R L D O R E G U L AT O R S O L U T I O N S Radiation Hardened (RH) Linear Regulators Linear Technology manufactures a broad range of rugged radiation tolerant (rad hard) voltage regulators that are ideal for space and military applications. We also partner with several outside vendors to provide monolithic packaged and hybrid products of Linear Technology RH DICE. Part Number Polarity Output Current (A) Max. VIN (V) Reference Voltage (Adj.) Package Radiation Hardened (Rad Hard or RH) Linear Regulators RH1084 Positive 5 25 1.25V TO-3 RH1086M Positive 0.5/1.5 25 1.25V Dice, TO–3, TO–39 RH117 Positive 0.5/1.5 40 1.25V Dice, TO–3, TO–39 RH137 Negative 1.5 –30 –1.25V Dice, TO–3, TO–39 RH1573 Positive 5 10 1.265V Dice RH1185 Negative 3 –35 –2.37V Dice RH3080* Positive 1 35 10uA Dice RH3083* Positive 3 23 50µA Dice * Current Source Reference References Robert Dobkin, New Linear Regulators Solve Old Problems, Linear Technology Corporation, Application Note 142, August 2013 Jim Williams, Load Transient Response Testing for Voltage Regulators, Linear Technology Corporation, Application Note 104, October 2006. Jim Williams, Minimizing Switching Regulator Residue in Linear Regulator Outputs, Linear Technology Corporation, Application Note 101, July 2005. Todd Owen and Jim Williams, Performance Verification of Low Noise, Low Dropout Regulators, Linear Technology Corporation, Application Note 83, March 2000. Craig Varga, LT1575 Ultrafast Linear Controller Makes Fast Transient Response Power Supplies, Linear Technology Corporation, Application Note 69, September 1996 (see Appendix A, Using PCB Material as Low Value Resistors). Goran Perica, Ceramic Input Capacitors Can Cause Overvoltage Transients, Linear Technology Corporation, Application Note 88, March 2001. Bill Roehr, Mounting Considerations for Power Semiconductors, ON Semiconductor, Application Note 1040/D, May 2001. Tom Gross, LDO Linear Regulators Rival Switchers for Efficiency, Linear Technology Corporation, Linear Technology Magazine, May 2005. LT1963A 1.5A, Low Noise, Fast Transient Response LDO Regulator data sheet, Linear Technology Corporation. All reference materials listed above are available at www.linear.com Videos / Video Product Briefs LT3009 LT3015 LT3070/71 LT3080 LT3081 LT3086 LT3090 LT3092 All videos listed above are available at www.linear.com/solutions/video 13 Sa l es Of f ices N O RT H AME RI CA NO RT HE A S T U. S . C H IN A K OREA WES TER N U .S. Connecticut Tel: (860) 228-4104 Room 1763, Office Building New Century Hotel No. 6 Southern Road of Capital Gym Haidian District Beijing, China 100044 Tel: +86 (10) 6801-1080 Fax: +86 (10) 6805-4030 Yundang Building, #1002 Samsung-Dong 144-23 Kangnam-Ku Seoul 135-090, Korea Tel: +82 (2) 792-1617 Fax: +82 (2) 792-1619 2085 E. 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