Power Management

1763MP

Linear Technology

500mA, Low Noise, LDO Micropower Regulators

Manufacturer: Linear Technology

Document: 20 Pages / 275Kb

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DESCRIPTION

500mA, Low Noise, LDO Micropower Regulators The L T®1763 series are micropower, low noise, low dropout regulators. The devices are capable of supplying 500mA of output current with a dropout voltage of 300mV. Designed for use in battery-powered systems, the low 30μA quiescent current makes them an ideal choice. Quiescent current is well controlled; it does not rise in dropout as it does with many other regulators. A key feature of the L T1763 regulators is low output noise. With the addition of an external 0.01μF bypass capacitor, output noise drops to 20μV RMS over a 10Hz to 100kHz bandwidth. The L T1763 regulators are stable with output capacitors as low as 3.3μF. Small ceramic capacitors can be used without the series resistance required by other regulators. Internal protection circuitry includes reverse battery protection, current limiting, thermal limiting and reverse current protection. The parts come in ﬁ xed output voltages of 1.5V, 1.8V, 2.5V, 3V, 3.3V and 5V, and as an adjustable device with a 1.22V reference voltage. The L T1763 regulators are available in 8-lead SO and 12-lead, low proﬁ le (4mm × 3mm × 0.75mm) DFN packages. 3.3V Low Noise Regulator

FEATURES

APPLICATIONS

n Low Noise: 20μVRMS (10Hz to 100kHz) n Output Current: 500mA n Low Quiescent Current: 30μA n Wide Input Voltage Range: 1.8V to 20V n Low Dropout Voltage: 300mV n Very Low Shutdown Current: < 1μA n No Protection Diodes Needed n Fixed Output Voltages: 1.5V, 1.8V, 2.5V, 3V, 3.3V, 5V n Adjustable Output from 1.22V to 20V n Stable with 3.3μF Output Capacitor n Stable with Aluminum, Tantalum or Ceramic Capacitors n Reverse Battery Protection n No Reverse Current n Overcurrent and Overtemperature Protected n 8-Lead SO and 12-Lead (4mm × 3mm) DFN Packages n Cellular Phones n Battery-Powered Systems n Noise-Sensitive Instrumentation Systems , L T, L TC and L TM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents, including 6144250, 6118263. Dropout Voltage IN SHDN 0.01μF 10μF

1763 TA01

3.7V TO 20V BYP GND LT1763-3.3 3.3V AT 500mA 20μVRMS NOISE 1μF OUTPUT CURRENT (mA) DROPOUT VOLTAGE (mV) 400 350 300 250 200 150 100 400

1763 TA02

(Note 1) NC IN IN NC SHDN GND NC OUT OUT NC SENSE/ADJ* BYP TOP VIEW DE PACKAGE 12-LEAD (4mm s 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 40°C/W, θJC = 5°C/W EXPOSED PAD (PIN 13) IS GND, MUST BE SOLDERED TO PCB *PIN 5: SENSE FOR L T1763-1.5/L T1763-1.8/L T1763-2.5/L T1763-3/L T1763-3.3/L T1763-5 ADJ FOR L T1763 SEE THE APPLICATIONS INFORMATION SECTION. TOP VIEW IN GND GND SHDN OUT SENSE/ADJ* GND BYP S8 PACKAGE 8-LEAD PLASTIC SO TJMAX = 150°C, θJA = 70°C/W, θJC = 35°C/W *PIN 2: SENSE FOR L T1763-1.5/L T1763-1.8/L T1763-2.5/L T1763-3/L T1763-3.3/L T1763-5 ADJ FOR L T1763 SEE THE APPLICATIONS INFORMATION SECTION. ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE L T1763CDE#PBF L T1763CDE#TRPBF 1763 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CDE-1.5#PBF L T1763CDE-1.5#TRPBF 76315 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CDE-1.8#PBF L T1763CDE-1.8#TRPBF 76318 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CDE-2.5#PBF L T1763CDE-2.5#TRPBF 76325 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CDE-3#PBF L T1763CDE-3#TRPBF 17633 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CDE-3.3#PBF L T1763CDE-3.3#TRPBF 76333 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CDE-5#PBF L T1763CDE-5#TRPBF 17635 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CS8#PBF L T1763CS8#TRPBF 1763 8-Lead Plastic SO –40°C to 125°C L T1763IS8#PBF L T1763IS8#TRPBF 1763 8-Lead Plastic SO –40°C to 125°C L T1763MPS8#PBF L T1763MPS8#TRPBF 1763MP 8-Lead Plastic SO –55°C to 125°C Operating Junction Temperature Range (Note 2) Storage Temperature Range Lead Temperature (Soldering, 10 sec) PIN CONFIGURATION

LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE L T1763CS8-1.5#PBF L T1763CS8-1.5#TRPBF 176315 8-Lead Plastic SO –40°C to 125°C L T1763IS8-1.5#PBF L T1763IS8-1.5#TRPBF 176315 8-Lead Plastic SO –40°C to 125°C L T1763CS8-1.8#PBF L T1763CS8-1.8#TRPBF 176318 8-Lead Plastic SO –40°C to 125°C L T1763IS8-1.8#PBF L T1763IS8-1.8#TRPBF 176318 8-Lead Plastic SO –40°C to 125°C L T1763CS8-2.5#PBF L T1763CS8-2.5#TRPBF 176325 8-Lead Plastic SO –40°C to 125°C L T1763IS8-2.5#PBF L T1763IS8-2.5#TRPBF 176325 8-Lead Plastic SO –40°C to 125°C L T1763CS8-3#PBF L T1763CS8-3#TRPBF 17633 8-Lead Plastic SO –40°C to 125°C L T1763IS8-3#PBF L T1763IS8-3#TRPBF 17633 8-Lead Plastic SO –40°C to 125°C L T1763CS8-3.3#PBF L T1763CS8-3.3#TRPBF 176333 8-Lead Plastic SO –40°C to 125°C L T1763IS8-3.3#PBF L T1763IS8-3.3#TRPBF 176333 8-Lead Plastic SO –40°C to 125°C L T1763CS8-5#PBF L T1763CS8-5#TRPBF 17635 8-Lead Plastic SO –40°C to 125°C L T1763IS8-5#PBF L T1763IS8-5#TRPBF 17635 8-Lead Plastic SO –40°C to 125°C LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE L T1763CDE L T1763CDE#TR 1763 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CDE-1.5 L T1763CDE-1.5#TR 76315 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CDE-1.8 L T1763CDE-1.8#TR 76318 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CDE-2.5 L T1763CDE-2.5#TR 76325 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CDE-3 L T1763CDE-3#TR 17633 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CDE-3.3 L T1763CDE-3.3#TR 76333 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CDE-5 L T1763CDE-5#TR 17635 12-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C L T1763CS8 L T1763CS8#TR 1763 8-Lead Plastic SO –40°C to 125°C L T1763IS8 L T1763IS8#TR 1763 8-Lead Plastic SO –40°C to 125°C L T1763MPS8 L T1763MPS8#TR 1763MP 8-Lead Plastic SO –55°C to 125°C L T1763CS8-1.5 L T1763CS8-1.5#TR 176315 8-Lead Plastic SO –40°C to 125°C L T1763IS8-1.5 L T1763IS8-1.5#TR 176315 8-Lead Plastic SO –40°C to 125°C L T1763CS8-1.8 L T1763CS8-1.8#TR 176318 8-Lead Plastic SO –40°C to 125°C L T1763IS8-1.8 L T1763IS8-1.8#TR 176318 8-Lead Plastic SO –40°C to 125°C L T1763CS8-2.5 L T1763CS8-2.5#TR 176325 8-Lead Plastic SO –40°C to 125°C L T1763IS8-2.5 L T1763IS8-2.5#TR 176325 8-Lead Plastic SO –40°C to 125°C L T1763CS8-3 L T1763CS8-3#TR 17633 8-Lead Plastic SO –40°C to 125°C L T1763IS8-3 L T1763IS8-3#TR 17633 8-Lead Plastic SO –40°C to 125°C L T1763CS8-3.3 L T1763CS8-3.3#TR 176333 8-Lead Plastic SO –40°C to 125°C L T1763IS8-3.3 L T1763IS8-3.3#TR 176333 8-Lead Plastic SO –40°C to 125°C L T1763CS8-5 L T1763CS8-5#TR 17635 8-Lead Plastic SO –40°C to 125°C L T1763IS8-5 L T1763IS8-5#TR 17635 8-Lead Plastic SO –40°C to 125°C Consult L TC Marketing for parts speciﬁ ed with wider operating temperature ranges. *The temperature grade is identiﬁ ed 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 speciﬁ cations, go to: http://www.linear .com/tapeandreel/ ORDER INFORMATION

ELECTRICAL CHARACTERISTICS

PARAMETER CONDITIONS MIN TYP MAX UNITS Minimum Operating Voltage C, I Grade: I LOAD = 500mA (Notes 3, 11) MP Grade: ILOAD = 500mA (Notes 3, 11) l l 1.8 1.8 2.3 2.35 V V Regulated Output Voltage (Note 4) L T1763-1.5 V IN = 2V, ILOAD = 1mA 2.5V < V IN < 20V , 1mA < ILOAD < 500mA l 1.485 1.462 1.5 1.5 1.515 1.538 V V L T1763-1.8 V IN = 2.3V, ILOAD = 1mA 2.8V < V IN < 20V, 1mA < ILOAD < 500mA l 1.782 1.755 1.8 1.8 1.818 1.845 V V L T1763-2.5 V IN = 3V, ILOAD = 1mA 3.5V < V IN < 20V, 1mA < ILOAD < 500mA l 2.475 2.435 2.5 2.5 2.525 2.565 V V L T1763-3 V IN = 3.5V, ILOAD = 1mA 4V < V IN < 20V, 1mA < ILOAD < 500mA l 2.970 2.925 3.030 3.075 V V L T1763-3.3 V IN = 3.8V, ILOAD = 1mA 4.3V < V IN < 20V, 1mA < ILOAD < 500mA l 3.267 3.220 3.3 3.3 3.333 3.380 V V L T1763-5 V IN = 5.5V, ILOAD = 1mA 6V < V IN < 20V, 1mA < ILOAD < 500mA l 4.950 4.875 5.050 5.125 V V ADJ Pin Voltage (Notes 3, 4) L T1763 V IN = 2.2V, ILOAD = 1mA C, I Grade: 2.3V < V IN < 20V , 1mA < ILOAD < 500mA MP Grade: 2.35V < V IN < 20V, 1mA < ILOAD < 500mA l l 1.208 1.190 1.190 1.220 1.220 1.220 1.232 1.250 1.250 V V V Line Regulation L T1763-1.5 ΔV IN = 2V to 20V, ILOAD = 1mA L T1763-1.8 ΔV IN = 2.3V to 20V, ILOAD = 1mA L T1763-2.5 ΔV IN = 3V to 20V, ILOAD = 1mA L T1763-3 ΔV IN = 3.5V to 20V, ILOAD = 1mA L T1763-3.3 ΔV IN = 3.8V to 20V, ILOAD = 1mA L T1763-5 ΔV IN = 5.5V to 20V, ILOAD = 1mA L T1763 (Note 3) C, I Grade: ΔV IN = 2V to 20V, ILOAD = 1mA L T1763 (Note 3) MP Grade: ΔV IN = 2.1V to 20V, ILOAD = 1mA l l l l l l l l mV mV mV mV mV mV mV mV Load Regulation L T1763-1.5 V IN = 2.5V, ΔILOAD = 1mA to 500mA V IN = 2.5V, ΔILOAD = 1mA to 500mA l mV mV L T1763-1.8 V IN = 2.8V, ΔILOAD = 1mA to 500mA V IN = 2.8V, ΔILOAD = 1mA to 500mA l mV mV L T1763-2.5 V IN = 3.5V, ΔILOAD = 1mA to 500mA V IN = 3.5V, ΔILOAD = 1mA to 500mA l 51 2 mV mV L T1763-3 V IN = 4V, ΔILOAD = 1mA to 500mA V IN = 4V, ΔILOAD = 1mA to 500mA l 71 5 mV mV L T1763-3.3 V IN = 4.3V, ΔILOAD = 1mA to 500mA V IN = 4.3V, ΔILOAD = 1mA to 500mA l 71 7 mV mV L T1763-5 V IN = 6V, ΔILOAD= 1mA to 500mA V IN = 6V, ΔILOAD = 1mA to 500mA l 12 25 mV mV L T1763 (Note 3) V IN = 2.3V, ΔILOAD = 1mA to 500mA C, I Grade: V IN = 2.3V, ΔILOAD = 1mA to 500mA MP Grade: V IN = 2.35V, ΔILOAD = 1mA to 500mA l l mV mV mV Dropout Voltage V IN = VOUT(NOMINAL) (Notes 5, 6, 11) ILOAD = 10mA ILOAD = 10mA l 0.13 0.19 0.25 V V ILOAD = 50mA ILOAD = 50mA l 0.17 0.22 0.32 V V ILOAD = 100mA ILOAD = 100mA l 0.20 0.24 0.34 V V ILOAD = 500mA ILOAD = 500mA l 0.30 0.35 0.45 V V The l denotes the speciﬁ cations which apply over the full operating temperature range, otherwise speciﬁ cations are at TA = 25°C. (Note 2)

ELECTRICAL CHARACTERISTICS The l denotes the speciﬁ cations which apply over the full operating temperature range, otherwise speciﬁ cations are at TA = 25°C. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS GND Pin Current VIN = VOUT(NOMINAL) (Notes 5, 7) ILOAD = 0mA ILOAD = 1mA ILOAD = 50mA ILOAD = 100mA ILOAD = 250mA ILOAD = 500mA l l l l l l 1.1 120 1.6 μA μA mA mA mA mA Output Voltage Noise C OUT = 10μF, CBYP = 0.01μF, ILOAD = 500mA, BW = 10Hz to 100kHz 20 μV RMS ADJ Pin Bias Current (Notes 3, 8) 30 100 nA Shutdown Threshold V OUT = Off to On VOUT = On to Off l l 0.25 0.8 0.65 V SHDN Pin Current (Note 9) VSHDN = 0V VSHDN = 20V 0.1 μA μA Quiescent Current in Shutdown V IN = 6V, VSHDN = 0V 0.1 1 μA Ripple Rejection V IN – VOUT = 1.5V (Avg), VRIPPLE = 0.5VP-P, fRIPPLE = 120Hz, ILOAD = 500mA 50 65 dB Current Limit V IN = 7V, VOUT = 0V C, I Grade: VIN = VOUT(NOMINAL) + 1V or 2.3V (Note 12), ΔVOUT = –0.1V MP Grade: VIN = 2.35V (Note 12), ΔVOUT = –0.1V l l 520 520 mA mA Input Reverse Leakage Current V IN = –20V, VOUT = 0V l 1m A Reverse Output Current (Note 10) L T1763-1.5 V OUT = 1.5V, VIN < 1.5V L T1763-1.8 V OUT = 1.8V, VIN < 1.8V L T1763-2.5 V OUT = 2.5V, VIN < 2.5V L T1763-3 V OUT = 3V, VIN < 3V L T1763-3.3 V OUT = 3.3V, VIN < 3.3V L T1763-5 V OUT = 5V, VIN < 5V L T1763 (Note 3) V OUT = 1.22V, VIN < 1.22V μA μA μA μA μA μA μA 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 L T1763 regulators are tested and speciﬁ ed under pulse load conditions such that T J ≅ TA. The L T1763 (C grade) 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 L T1763 (I grade) is guaranteed over the full –40°C to 125°C operating junction temperature range. The L T1763 (MP grade) is 100% tested and guaranteed over the –55°C to 125°C operating junction temperature range. Note 3: The L T1763 (adjustable version) is tested and speciﬁ ed for these conditions with the ADJ pin connected to the OUT pin. Note 4: Operating conditions are limited by maximum junction temperature. The regulated output voltage speciﬁ cation will not apply for all possible combinations of input voltage and output current. When operating at maximum input voltage, the output current range must be limited. When operating at maximum output current, the input voltage range must be limited. Note 5: To satisfy requirements for minimum input voltage, the L T1763 (adjustable version) is tested and speciﬁ ed for these conditions with an external resistor divider (two 250k resistors) for an output voltage of 2.44V. The external resistor divider will add a 5μA DC load on the output. Note 6: Dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a speciﬁ ed output current. In dropout, the output voltage will be equal to: V IN – VDROPOUT. Note 7: GND pin current is tested with VIN = VOUT(NOMINAL) or VIN = 2.3V (C, I grade) or 2.35V (MP grade), whichever is greater , and a current source load. This means the device is tested while operating in its dropout region. This is the worst-case GND pin current. The GND pin current will decrease slightly at higher input voltages. Note 8: ADJ pin bias current ﬂ ows into the ADJ pin. Note 9: SHDN pin current ﬂ ows into the SHDN pin. Note 10: Reverse output current is tested with the IN pin grounded and the OUT pin forced to the rated output voltage. This current ﬂ ows into the OUT pin and out the GND pin. Note 11: For the L T1763, L T1763-1.5 and L T1763-1.8 dropout voltage will be limited by the minimum input voltage speciﬁ cation under some output voltage/load conditions. See the curve of Minimum Input Voltage in the Typical Performance Characteristics. Note 12: To satisfy requirements for minimum input voltage, current limit is tested at V IN = VOUT(NOMINAL) + 1V or 2.3V (C, I grade) or 2.35V (MP grade), whichever is greater.

TYPICAL PERFORMANCE CHARACTERISTICS Quiescent Current L T1763-1.5 Output Voltage L T1763-1.8 Output Voltage L T1763-2.5 Output Voltage L T1763-3 Output Voltage L T1763-3.3 Output Voltage Typical Dropout Voltage Guaranteed Dropout Voltage Dropout Voltage OUTPUT CURRENT (mA) 500 450 400 350 300 250 200 150 100 DROPOUT VOLTAGE (mV)

1763 G01

0 50 100 150 200 250 300 350 400 450 500 TJ = 125°C TJ = 25°C OUTPUT CURRENT (mA) 500 450 400 350 300 250 200 150 100 GUARANTEED DROPOUT VOLTAGE (mV)

1763 G02

0 50 100 150 200 250 300 350 400 450 500 TJ b 125°C TJ b 25°C = TEST POINTS TEMPERATURE (°C) –50 DROPOUT VOLTAGE (mV) 0 50 75

1763 G03

–25 25 100 125 500 450 400 350 300 250 200 150 100 IL = 500mA IL = 1mA IL = 10mAIL = 50mA IL = 250mA IL = 100mA TEMPERATURE (°C) –50 QUIESCENT CURRENT (μA) 100

1763 G04

05 0–25 25 75 125 VIN = 6V RL = 250k, IL = 5μA (LT1763) VSHDN = VIN TEMPERATURE (°C) –50 OUTPUT VOLTAGE (V) 100

1763 G05

1.528 1.521 1.514 1.507 1.500 1.493 1.486 1.479 1.472 –25 25 75 125 IL = 1mA TEMPERATURE (°C) –50 OUTPUT VOLTAGE (V) 100

1763 G06

1.84 1.83 1.82 1.81 1.80 1.79 1.78 1.77 1.76 –25 25 75 125 IL = 1mA TEMPERATURE (°C) –50 OUTPUT VOLTAGE (V) 100

1763 G07

2.54 2.53 2.52 2.51 2.50 2.49 2.48 2.47 2.46 –25 25 75 125 IL = 1mA TEMPERATURE (°C) –50 OUTPUT VOLTAGE (V) 100

1763 G08

3.060 3.045 3.030 3.015 3.000 2.985 2.970 2.955 2.940 –25 25 75 125 IL = 1mA TEMPERATURE (°C) –50 OUTPUT VOLTAGE (V) 100

1763 G09

3.360 3.345 3.330 3.315 3.300 3.285 3.270 3.255 3.240 –25 25 75 125 IL = 1mA

TYPICAL PERFORMANCE CHARACTERISTICS L T1763-1.8 Quiescent Current L T1763-2.5 Quiescent Current L T1763-3 Quiescent Current L T1763-3.3 Quiescent Current L T1763-5 Quiescent Current L T1763 Quiescent Current L T1763-5 Output Voltage L T1763 ADJ Pin Voltage L T1763-1.5 Quiescent Current TEMPERATURE (°C) –50 OUTPUT VOLTAGE (V) 100

1763 G10

5.100 5.075 5.050 5.025 5.000 4.975 4.950 4.925 4.900 –25 25 75 125 IL = 1mA TEMPERATURE (°C) –50 ADJ PIN VOLTAGE (V) 100

1763 G11

1.240 1.235 1.230 1.225 1.220 1.215 1.210 1.205 1.200 –25 25 75 12 IL = 1mA INPUT VOLTAGE (V) QUIESCENT CURRENT (μA) 250 225 200 175 150 125 100