Datasheet LT1962 (Analog Devices) - 4

LT1962 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) PARAMETER CONDITIONS MIN TYP MAX UNITS
Reverse Output Current LT1962-1.5 VOUT = 1.5V, VIN < 1.5V 10 20 µA (Note 11) LT1962-1.8 VOUT = 1.8V, VIN < 1.8V 10 20 µA LT1962-2.5 VOUT = 2.5V, VIN < 2.5V 10 20 µA LT1962-3 VOUT = 3V, VIN < 3V 10 20 µA LT1962-3.3 VOUT = 3.3V, VIN < 3.3V 10 20 µA LT1962-5 VOUT = 5V, VIN < 5V 10 20 µA LT1962 (Note 4) VOUT = 1.22V, VIN < 1.22V 5 10 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
To satisfy requirements for minimum input voltage, the LT1962 may cause permanent damage to the device. Exposure to any Absolute (adjustable version) is tested and specified for these conditions with an Maximum Rating condition for extended periods may affect device external resistor divider (two 250k resistors) for an output voltage of reliability and lifetime. 2.44V. The external resistor divider will add a 5µA DC load on the output.
Note 2:
Absolute maximum input to output differential voltage cannot
Note 7:
Dropout voltage is the minimum input to output voltage differential be achieved with all combinations of rated IN pin and OUT pin voltages. needed to maintain regulation at a specified output current. In dropout, the With the IN pin at 20V, the OUT pin may not be pulled below 0V. The total output voltage will be equal to: VIN – VDROPOUT. measured voltage from in to out can not exceed ±20V.
Note 8:
GND pin current is tested with VIN = VOUT(NOMINAL) or VIN = 2.3V
Note 3:
The LT1962 is tested and specified under pulse load conditions (whichever is greater) and a current source load. This means the device is such that TJ ≈ TA. The LT1962E is tested at TA = 25°C and performance tested while operating in its dropout region. This is the worst-case GND is guaranteed from 0°C to 125°C. Performance of the LT1962E over the pin current. The GND pin current will decrease slightly at higher input full –40°C to 125°C operating temperature range is assured by design, voltages. characterization, and correlation with statistical process controls. The
Note 9:
ADJ pin bias current flows into the ADJ pin. LT1962I is guaranteed over the full –40°C to 125°C operating junction
Note 10:
SHDN pin current flows into the SHDN pin. This current is temperature range. included in the specification for GND pin current.
Note 4:
The LT1962 (adjustable version) is tested and specified for these
Note 11:
Reverse output current is tested with the IN pin grounded and the conditions with the ADJ pin connected to the OUT pin. OUT pin forced to the rated output voltage. This current flows into the OUT
Note 5:
Operating conditions are limited by maximum junction pin and out the GND pin. temperature. The regulated output voltage specification will not apply
Note 12:
For the LT1962, LT1962-1.5 and LT1962-1.8 dropout voltage for all possible combinations of input voltage and output current. When will be limited by the minimum input voltage specification under some operating at maximum input voltage, the output current range must be output voltage/load conditions. See the curve of Minimum Input Voltage limited. When operating at maximum output current, the input voltage in the Typical Performance Characteristics section. For other fixed voltage range must be limited. versions of the LT1962, the minimum input voltage is limited by the dropout voltage.
Typical perForMance characTerisTics Typical Dropout Voltage Guaranteed Dropout Voltage Dropout Voltage
400 500 400 = TEST POINTS 350 450 350 T TJ ≤ 125°C I J = 125°C 400 L = 300mA 300 300 TAGE (mV) 350 250 T 300 J ≤ 25°C 250 IL = 100mA 200 250 200 TJ = 25°C IL = 50mA 150 200 150 150 IL = 10mA DROPOUT VOLTAGE (mV) 100 DROPOUT VOTLAGE (mV) 100 100 50 50 I GUARANTEED DROPOUT VOL 50 L = 1mA 0 0 0 0 50 100 150 200 250 300 0 50 100 150 200 250 300 –50 –25 0 25 50 75 100 125 OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) TEMPERATURE (°C) 1962 G01 1962 G02 1962 G03 1962fa 1962fb 4 For more information www.linear.com/LT1962 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Applications Information Package Description Revision History Typical Application Related Parts