lt3032 Linear Technology Corporation, lt3032 Datasheet
lt3032
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lt3032 Summary of contents
Page 1
... The LT3032 is available in a unique low profi le 14-lead 4mm × 3mm × 0.75mm DFN package with exposed back- side pads for each regulator, allowing optimum thermal performance ...
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... LT3032IDE#TRPBF LEAD BASED FINISH TAPE AND REEL LT3032EDE LT3032EDE#TR LT3032IDE LT3032IDE#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. For more information on lead free part marking, go to: For more information on tape and reel specifi ...
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... V = Off to On OUTP Off OUTP V = Off to On (Positive) OUTN V = Off to On (Negative) OUTN Off (Positive) OUTN Off (Negative) OUTN = 0V = 20V LT3032 MIN TYP MAX UNITS l 1.8 2 –2.3 –1.6 V 1.202 1.22 1.238 V l 1.184 1.22 1.256 V –1.238 – ...
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... When operating at maximum output currents, the input voltage ranges must be limited. Note 5. The LT3032 is tested and specifi ed for these conditions with the ADJP pin tied to the OUTP pin and the ADJN pin tied to the OUTN pin. ...
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... I = –1mA L –1.235 –1.230 –1.225 –1.220 –1.215 –1.210 –1.205 –1.200 125 –50 – TEMPERATURE (°C) LT3032 INP-to-OUTP Dropout Voltage 500 450 400 350 I = 150mA L 300 I = 50mA L 250 200 I = 10mA L 150 ...
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... LT3032 TYPICAL PERFORMANCE CHARACTERISTICS INN Quiescent Current – 25°C J – 250k SHDNN INN I = –5μA L –30 –25 –20 –15 – SHDNN –5 –0 0 –1 –2 –3 –4 –5 –6 –7 –8 –9 –10 INN VOLTAGE (V) 3032 G10 Positive Side GND Pin Current ...
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... V = –7V INN OUTN –500 –400 –300 –200 –100 0 –20 –50 – TEMPERATURE (°C) LT3032 ADJP Pin Bias Current 140 120 100 100 125 –50 – TEMPERATURE (°C) 3032 G20 Positive Side Current Limit 500 ...
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... LT3032 TYPICAL PERFORMANCE CHARACTERISTICS Reverse OUTP Pin Current INP V = 1.22V OUTP – –25 100 TEMPERATURE (°C) 3032 G28 INN-to-OUTN Ripple Rejection –150mA – 1. INN OUTN(NOMINAL) 50mV RIPPLE RMS BYPN 10μF ...
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... LOAD CURRENT (mA) OUTP 10Hz to 100kHz Output Noise BYPP V OUTP 100μV/DIV C = 10μF 1ms/DIV OUTP I = 150mA OUTP –1k LT3032 OUTN Noise Spectral Density 1000pF BYPN 1 = 100pF 0 0.01μF BYPN C = 10μF OUTN I = –150mA L 0.01 100k 10 100 1k FREQUENCY (Hz) ...
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... LT3032 TYPICAL PERFORMANCE CHARACTERISTICS OUTN, 10Hz to 100kHz Output Noise BYPN V OUTN 200μV/DIV C = 10μF 1ms/DIV OUTN I = –150mA LOAD V = –5V OUTN OUTP Transient Response BYPP 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 150 100 400 800 1200 TIME (μs) OUTN Transient Response ...
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... Pin 16 to the PCB’s negative input supply and tie directly to Pins 6 and 9. Power is supplied to the negative side of the LT3032 through the INN pins. A bypass capacitor is required on this pin more than six inches away from the main input fi lter capacitor ...
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... GND, INN, SHDNP, SHDNN, OUTP , OUTN, fl oated, or tied to any other point. INP(Pin 14): Positive Input. Power is supplied to the positive side of the LT3032 through the INP pin. A bypass capacitor is required on this pin more than six inches away from the main input fi lter capacitor. In general, the ...
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... Setting Output Voltage The LT3032 has output voltage ranges of 1.22V to 20V for the positive side and –1.22V to –20V for the negative side. The output voltages are set by the ratio of two external resistor dividers as shown in Figure 1 ...
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... With a 330pF bypass capacitor or larger, a 4.7μF output capacitor is recommended. The shaded region of Figure 2 defi nes the range over which the LT3032 is stable. The minimum ESR needed is defi ned by the amount of bypass capacitance used, while the maximum ESR is 3Ω. These requirements are applicable to both the positive and negative linear regulator ...
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... One of two ways reduces a wire’s self-inductance. One method divides the current fl owing towards the LT3032 3032 F04 between two parallel conductors. In this case, the farther apart the wires are from each other, the more the self- inductance is reduced 50% reduction when placed a few inches apart ...
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... Additional heat sources mounted nearby must also be considered. 16 The LT3032 is a surface mount device and 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 ...
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... In this case, grounding the respective SHDNP/ SHDNN pin will turn off that side of the LT3032 and stop the output from sourcing current. The ADJP pin can be pulled above or below ground by ± ...
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... If 3032 F06 this happens, there are two stable operating points for the negative side of the LT3032. With this double intersection, the INN supply may need to be cycled down to zero and brought up again to make OUTN recover. ...
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... Plastic DFN, Multichip (4mm 3mm) (Reference LTC DWG #05-08-1731 Rev Ø) 0.70 ±0.05 1.65 ± 0.05 1.07 ±0.05 PACKAGE OUTLINE 0.25 ± 0.05 0.50 BSC 3.00 REF R = 0.05 TYP 3.00 ±0.10 1.65 ± 0.10 (2 SIDES) 0.40 ± 0.10 0.75 ±0.05 0.00 – 0.05 LT3032 R = 0.115 1.78 ±0.10 TYP 8 14 1.07 0.10 TYP ±0.10 1.65 ± 0.10 0.51 TYP PIN 1 NOTCH 0.25 45° 0.25 ± 0.05 CHAMFER 0.50 BSC 3.00 REF (DE14MA) DFN 1106 REV Ø ...
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... Parallelable, Single Resistor, Low Dropout Linear Regulator ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 20 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ±5V to ±15V Tracking Supply INP OUTP LT3032 0.01μF 536k BYPP SHDNP ON ADJP GND 95.3k SHDNN 250k ADJN BYPN 0.01μ ...