Datasheet LT3015 (Analog Devices) - 6

LT3015 Series
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS
ADJ Pin Bias Current (Notes 2, 7) LT3015: VIN = –2.3V –200 30 200 nA Shutdown Threshold (Note 11) VOUT = Off-to-On (Positive) l 1.07 1.21 1.35 V VOUT = Off-to-On (Negative) l –1.34 –1.2 –1.06 V VOUT = On-to-Off (Positive) l 0.5 0.73 V VOUT = On-to-Off (Negative) l –0.73 –0.5 V SHDN Pin Current (Note 8) VSHDN = 0V l –1 0 1 µA VSHDN = 15V l 17 27 µA VSHDN = –15V l –2.8 –4.5 µA Quiescent Current in Shutdown VIN = –6V, VSHDN = 0V l 0.01 6 µA Ripple Rejection LT3015-2.5: VIN = –4V (Avg) 52 62 dB VRIPPLE = 0.5VP-P, LT3015-3: VIN = –4.5V (Avg) 52 62 dB fRIPPLE = 120Hz, LT3015-3.3: VIN = –4.8V (Avg) 51 61 dB ILOAD = –1.5A LT3015-5: VIN = –6.5V (Avg) 48 58 dB LT3015-12: VIN = –13.5V (Avg) 43 53 dB LT3015-15: VIN = –16.5V (Avg) 40 50 dB LT3015: VIN = –2.5V (Avg) (Note 2) 55 65 dB Current Limit (Note 14) VIN = –2.3V, VOUT = 0V l 1.7 2 2.3 A LT3015-2.5/-3/-3.3/-5/-12/-15: VIN = VOUT(NOMINAL) – 1V, ∆VOUT = –5% l 1.7 2 2.3 A LT3015: VIN = –2.3V, ∆VOUT = 0.1V l 1.7 2 2.3 A Input Reverse Leakage Current LT3015-2.5/-3/-3.3/-5/-12/-15: VIN = 30V, VOUT, VADJ, VSHDN = Open Circuit l 4 5.5 mA LT3015: VIN = 30V, VOUT, VADJ, VSHDN = Open Circuit l 1.55 1.7 mA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 8:
Positive SHDN pin current flows into the SHDN pin. may cause permanent damage to the device. Exposure to any Absolute
Note 9:
The LT3015 is tested and specified under pulsed load conditions Maximum Rating condition for extended periods may affect device such that T reliability and lifetime. J ≅ TA. The LT3015E is guaranteed to meet performance specifications from 0°C to 125°C junction temperature. Specifications over
Note 2:
The LT3015 adjustable version is tested and specified for these the –40°C to 125°C operating temperature range are assured by design, conditions with the ADJ pin connected to the OUT pin. characterization, and correlation with statistical process controls. The
Note 3:
Maximum junction temperature limits operating conditions. The LT3015I is guaranteed over the full –40°C to 125°C operating junction regulated output voltage specification does not apply for all possible temperature range. The LT3015MP is 100% tested and guaranteed over combinations of input voltage and output current, especially due to the the full –55°C to 125°C operating junction temperature range. current limit foldback which starts to decrease current limit at about
Note 10:
Parasitic diodes exist internally between the OUT, ADJ, SHDN |VIN – VOUT| = 8V. If operating at maximum output current, limit the input pins and the IN pin. Do not drive the OUT, ADJ, and SHDN pins more that voltage range. If operating at maximum input voltage, limit the output 0.3V below the IN pin during fault conditions, and these pins must remain current range. at a voltage more positive than IN during normal operation.
Note 4:
To satisfy minimum input voltage requirements, the LT3015 is
Note 11:
The SHDN threshold must be met to ensure device operation. tested and specified for these conditions with an external resistor divider
Note 12:
For LT3015, the minimum input voltage refers to the lowest (54.9k top, 49.9k bottom) for an output voltage of –2.56V. The external input voltage before the parts goes out of regulation. For the fixed voltage resistor adds 25μA of DC load on the output. versions of LT3015, the minimum input voltage refers to the lowest input
Note 5:
Dropout voltage is the minimum input-to-output voltage voltage before the part can no longer sink 1.5A; for proper regulation, the differential needed to maintain regulation at a specified output current. In dropout voltage requirements must be met. dropout, the output voltage is: VIN + VDROPOUT.
Note 13:
Sense pin current flows out of the pin.
Note 6:
GND pin current is tested with VIN = VOUT(NOMINAL) and a current
Note 14:
The current limit circuit incorporates foldback that decreases source load. Therefore, the device is tested while operating in dropout. current limit for |V This is the worst-case GND pin current. GND pin current decreases slightly IN – VOUT| ≥ 8V. Some level of output current is provided at all V at higher input voltages. IN – VOUT differential voltages. Please consult the Typical Performance Characteristics graph for Current Limit vs V
Note 7:
Positive ADJ pin bias current flows into the ADJ pin. IN – VOUT. 3015fb 6 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Revision History Typical Application Related Parts