Datasheet LT3065 (Analog Devices) - 5

制造商Analog Devices
描述45V VIN, 500mA Low Noise, Linear Regulator with Programmable Current Limit and Power Good
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ELECTRICAL. CHARACTERISTICS The. denotes the specifications which apply over the full operating

ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating

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LT3065 Series

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LT3065 Series
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C (Note 3).
SHDN Pin Current (Note 11) VSHDN = 0V, VIN = 45V l ±1 µA VSHDN = 45V, VIN = 45V l 0.5 3 µA Ripple Rejection LT3065-1.2 63 78 dB VIN – VOUT = 2V, VRIPPLE = 0.5VP-P, LT3065-1.5 63 78 dB fRIPPLE = 120Hz, ILOAD = 500mA LT3065-1.8 59 74 dB LT3065-2.5 57 72 dB LT3065-3.3 56 71 dB LT3065-5 55 70 dB LT3065 70 85 dB Input Reverse Leakage Current VIN = –45V, VOUT = 0 l 300 µA Reverse Output Current (Note 12) VOUT = 1.2V, VIN = VSHDN = 0 0 10 µA Internal Current Limit (Note 4) VIN = 2.2V, VOUT = 0, VIMAX = 0 900 mA VIN = 2.2V, ΔVOUT = –5% l 520 mA External Programmed Current Limit 5.6V < VIN < 10V, VOUT = 95% of VOUT (Nominal), RIMAX = 1.5k l 180 200 220 mA (Notes 7, 13) 5.6V < VIN < 7V, VOUT = 95% of VOUT (Nominal), RIMAX = 604Ω l 445 495 545 mA PWRGD Logic Low Voltage Pull-Up Current = 50µA l 0.07 0.25 V PWRGD Leakage Current VPWRGD = 45V 0.01 1 µA PWRGD Trip Point % of Nominal Output Voltage, Output Rising l 86 90 94 % PWRGD Trip Point Hysteresis % of Nominal Output Voltage 1.6 %
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
Dropout voltage is the minimum IN-to-OUT differential voltage may cause permanent damage to the device. Exposure to any Absolute needed to maintain regulation at a specified output current. In dropout, Maximum Rating condition for extended periods may affect device the output voltage equals (VIN – VDROPOUT). For some output voltages, reliability and lifetime. minimum input voltage requirements limit dropout voltage.
Note 2:
Absolute maximum input-to-output differential voltage is not
Note 7:
To satisfy minimum input voltage requirements, the LT3065 is achievable with all combinations of rated IN pin and OUT pin voltages. tested and specified for these conditions with an external resistor divider With IN at 50V, do not pull OUT below 0V. The total differential voltage (60.4k bottom, 442k top) which sets VOUT to 5V. The divider adds 10uA of from IN to OUT must not exceed +50V, –40V. If OUT is pulled above IN output DC load. This external current is not factored into GND pin current. and GND, the OUT to IN differential voltage must not exceed 40V.
Note 8:
GND pin current is tested with VIN = VOUT(NOMINAL) + 0.6V and a
Note 3:
The LT3065 regulator is tested and specified under pulse current source load. GND pin current increases in dropout. See GND pin load conditions such that TJ ≅ TA. The LT3065E regulators are 100% current curves in the Typical Performance Characteristics section. tested at TA = 25°C and performance is guaranteed from 0°C to 125°C.
Note 9:
To satisfy requirements for minimum input voltage, current limit is Performance at –40°C to 125°C is assured by design, characterization and tested at VIN = VOUT(NOMINAL) + 1V or VIN = 2.2V, whichever is greater. correlation with statistical process controls. The LT3065I regulators are
Note 10:
ADJ pin bias current flows out of the ADJ pin. guaranteed over the full –40°C to 125°C operating junction temperature range. The LT3065MP regulators are 100% tested over the –55°C to
Note 11:
SHDN pin current flows into the SHDN pin. 150°C operating junction temperature range. The LT3065H regulators are
Note 12:
Reverse output current is tested with the IN pin grounded and the 100% tested at the 150°C operating junction temperature. High junction OUT pin forced to the specified voltage. This current flows into the OUT temperatures degrade operating lifetimes. Operating lifetime is derated at pin and out of the GND pin. junction temperatures greater than 125°C.
Note 13:
Current limit varies inversely with the external resistor value tied
Note 4:
The LT3065 adjustable version is tested and specified for these from the IMAX pin to GND. For detailed information on selecting the IMAX conditions with the ADJ pin connected to the OUT pin. resistor value, see the Applications Information section. If the externally
Note 5:
Maximum junction temperature limits operating conditions. programmed current limit feature is unused, tie the IMAX pin to GND. Regulated output voltage specifications do not apply for all possible The internal current limit circuitry implements short-circuit protection as combinations of input voltage and output current. If operating at the specified. maximum input voltage, limit the output current range. If operating at
Note 14:
This IC includes over temperature protection that protects the the maximum output current, limit the input voltage range. Current limit device during overload conditions. Junction temperature exceeds 125°C foldback limits the maximum output current as a function of input-to- (LT3065E, LT3065I) or 150°C (LT3065MP, LT3065H) when the over output voltage. See Current Limit vs V temperature circuitry is active. Continuous operation above the specified IN – VOUT in the Typical Performance Characteristics section. maximum junction temperature may impair device reliability. Rev.D For more information www.analog.com 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Block Diagram Applications Information Typical Applications Package Description Typical Application Related Parts