Datasheet LT1121, LT1121-3.3, LT1121-5 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Micropower Low Dropout Regulators with Shutdown |
| Pages / Page | 16 / 4 — ELECTRICAL CHARACTERISTICS The. denotes the specifications which apply … |
| File Format / Size | PDF / 275 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS The. denotes the specifications which apply over the full operating
Model Line for this Datasheet
- LT1121ACS8#PBF LT1121ACS8#PBF LT1121ACS8#TRPBF LT1121ACS8#TRPBF LT1121ACS8-3.3#PBF LT1121ACS8-3.3#PBF LT1121ACS8-3.3#TRPBF LT1121ACS8-3.3#TRPBF LT1121ACS8-5#PBF LT1121ACS8-5#PBF LT1121ACS8-5#TRPBF LT1121ACS8-5#TRPBF LT1121AHVCS8#PBF LT1121AHVCS8#PBF LT1121AHVCS8#TRPBF LT1121AHVCS8#TRPBF LT1121AHVIS8#PBF LT1121AHVIS8#PBF LT1121AHVIS8#TRPBF LT1121AHVIS8#TRPBF LT1121AIS8#PBF LT1121AIS8#PBF LT1121AIS8#TRPBF LT1121AIS8#TRPBF LT1121AIS8-3.3#PBF LT1121AIS8-3.3#PBF LT1121AIS8-3.3#TRPBF LT1121AIS8-3.3#TRPBF LT1121AIS8-5#PBF LT1121AIS8-5#PBF LT1121AIS8-5#TRPBF LT1121AIS8-5#TRPBF LT1121CN8#PBF LT1121CN8#PBF LT1121CN8-3.3#PBF LT1121CN8-3.3#PBF LT1121CN8-5#PBF LT1121CN8-5#PBF LT1121CS8#PBF LT1121CS8#PBF LT1121CS8#TRPBF LT1121CS8#TRPBF LT1121CS8-3.3#PBF LT1121CS8-3.3#PBF LT1121CS8-3.3#TRPBF LT1121CS8-3.3#TRPBF LT1121CS8-5#PBF LT1121CS8-5#PBF LT1121CS8-5#TRPBF LT1121CS8-5#TRPBF LT1121CST-3.3#PBF LT1121CST-3.3#PBF LT1121CST-3.3#TRPBF LT1121CST-3.3#TRPBF LT1121CST-5#PBF LT1121CST-5#PBF LT1121CST-5#TRPBF LT1121CST-5#TRPBF LT1121CZ-3.3#PBF LT1121CZ-3.3#PBF LT1121CZ-3.3#TRPBF LT1121CZ-3.3#TRPBF LT1121CZ-5#PBF LT1121CZ-5#PBF LT1121CZ-5#TRPBF LT1121CZ-5#TRPBF LT1121HVCS8#PBF LT1121HVCS8#PBF LT1121HVCS8#TRPBF LT1121HVCS8#TRPBF LT1121HVIS8#PBF LT1121HVIS8#PBF LT1121HVIS8#TRPBF LT1121HVIS8#TRPBF LT1121IN8#PBF LT1121IN8#PBF LT1121IN8-3.3#PBF LT1121IN8-3.3#PBF LT1121IN8-5#PBF LT1121IN8-5#PBF LT1121IS8#PBF LT1121IS8#PBF LT1121IS8#TRPBF LT1121IS8#TRPBF LT1121IS8-3.3#PBF LT1121IS8-3.3#PBF LT1121IS8-3.3#TRPBF LT1121IS8-3.3#TRPBF LT1121IS8-5#PBF LT1121IS8-5#PBF LT1121IS8-5#TRPBF LT1121IS8-5#TRPBF LT1121IST-3.3#PBF LT1121IST-3.3#PBF LT1121IST-3.3#TRPBF LT1121IST-3.3#TRPBF LT1121IST-5#PBF LT1121IST-5#PBF LT1121IST-5#TRPBF LT1121IST-5#TRPBF LT1121IZ-3.3#PBF LT1121IZ-3.3#PBF LT1121IZ-3.3#TRPBF LT1121IZ-3.3#TRPBF LT1121IZ-5#PBF LT1121IZ-5#PBF LT1121IZ-5#TRPBF LT1121IZ-5#TRPBF
Text Version of Document
LT1121/LT1121-3.3/LT1121-5
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
Ground Pin Current (Note 7) ILOAD = 0mA l 30 50 µA ILOAD = 1mA l 90 120 µA ILOAD = 10mA l 350 500 µA ILOAD = 50mA l 1.5 2.5 mA ILOAD = 100mA l 4 7 mA ILOAD = 150mA l 7 14 mA Adjust Pin Bias Current (Notes 5, 8) TJ = 25ºC 150 300 nA Shutdown Threshold VOUT = Off to On l 1.2 2.8 V VOUT = On to Off l 0.25 0.75 V Shutdown Pin Current (Note 9) VSHDN = 0V l 6 10 µA Quiescent Current in Shutdown (Note 10) VIN = 6V, VSHDN = 0V l 16 22 µA Ripple Rejection VIN – VOUT = 1V (Avg), VRIPPLE = 0.5VP-P , fRIPPLE = 120Hz, 50 58 dB ILOAD = 0.1A Current Limit VIN – VOUT = 7V, TJ = 25ºC 200 500 mA Input Reverse Leakage Current VIN = –20V, VOUT = 0V l 1 mA Reverse Output Current (Note 11) LT1121-3.3 VOUT = 3.3V, VIN = 0V 16 25 µA LT1121-5 VOUT = 5V, VIN = 0V 16 25 µA LT1121 (Note 5) VOUT = 3.8V, VIN = 0V 16 25 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 5:
The LT1121 (adjustable version) is tested and specified with the may cause permanent damage to the device. Exposure to any Absolute adjust pin connected to the output pin. Maximum Rating condition for extended periods may affect device
Note 6:
Dropout voltage is the minimum input/output voltage required to reliability and lifetime. maintain regulation at the specified output current. In dropout the output
Note 2:
The shutdown pin input voltage rating is required for a low voltage will be equal to: (VIN – VDROPOUT). impedance source. Internal protection devices connected to the shutdown
Note 7:
Ground pin current is tested with VIN = VOUT (nominal) and a pin will turn on and clamp the pin to approximately 7V or –0.6V. This current source load. This means that the device is tested while operating in range allows the use of 5V logic devices to drive the pin directly. For high its dropout region. This is the worst case ground pin current. The ground impedance sources or logic running on supply voltages greater than 5.5V, pin current will decrease slightly at higher input voltages. the maximum current driven into the shutdown pin must be limited to less
Note 8:
Adjust pin bias current flows into the adjust pin. than 20mA.
Note 9:
Shutdown pin current at V
Note 3:
For junction temperatures greater than 110°C, a minimum load SHDN = 0V flows out of the shutdown pin. of 1mA is recommended. For T
Note 10:
Quiescent current in shutdown is equal to the sum total of the J > 110°C and IOUT < 1mA, output voltage may increase by 1%. shutdown pin current (6µA) and the ground pin current (9µA).
Note 4:
Operating conditions are limited by maximum junction
Note 11:
Reverse output current is tested with the input pin grounded and temperature. The regulated output voltage specification will not apply the output pin forced to the rated output voltage. This current flows into for all possible combinations of input voltage and output current. When the output pin and out of the ground pin. 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. 1121fg 4 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Applications Information Package Description Revision History Related Parts
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
Ground Pin Current (Note 7) ILOAD = 0mA l 30 50 µA ILOAD = 1mA l 90 120 µA ILOAD = 10mA l 350 500 µA ILOAD = 50mA l 1.5 2.5 mA ILOAD = 100mA l 4 7 mA ILOAD = 150mA l 7 14 mA Adjust Pin Bias Current (Notes 5, 8) TJ = 25ºC 150 300 nA Shutdown Threshold VOUT = Off to On l 1.2 2.8 V VOUT = On to Off l 0.25 0.75 V Shutdown Pin Current (Note 9) VSHDN = 0V l 6 10 µA Quiescent Current in Shutdown (Note 10) VIN = 6V, VSHDN = 0V l 16 22 µA Ripple Rejection VIN – VOUT = 1V (Avg), VRIPPLE = 0.5VP-P , fRIPPLE = 120Hz, 50 58 dB ILOAD = 0.1A Current Limit VIN – VOUT = 7V, TJ = 25ºC 200 500 mA Input Reverse Leakage Current VIN = –20V, VOUT = 0V l 1 mA Reverse Output Current (Note 11) LT1121-3.3 VOUT = 3.3V, VIN = 0V 16 25 µA LT1121-5 VOUT = 5V, VIN = 0V 16 25 µA LT1121 (Note 5) VOUT = 3.8V, VIN = 0V 16 25 µA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 5:
The LT1121 (adjustable version) is tested and specified with the may cause permanent damage to the device. Exposure to any Absolute adjust pin connected to the output pin. Maximum Rating condition for extended periods may affect device
Note 6:
Dropout voltage is the minimum input/output voltage required to reliability and lifetime. maintain regulation at the specified output current. In dropout the output
Note 2:
The shutdown pin input voltage rating is required for a low voltage will be equal to: (VIN – VDROPOUT). impedance source. Internal protection devices connected to the shutdown
Note 7:
Ground pin current is tested with VIN = VOUT (nominal) and a pin will turn on and clamp the pin to approximately 7V or –0.6V. This current source load. This means that the device is tested while operating in range allows the use of 5V logic devices to drive the pin directly. For high its dropout region. This is the worst case ground pin current. The ground impedance sources or logic running on supply voltages greater than 5.5V, pin current will decrease slightly at higher input voltages. the maximum current driven into the shutdown pin must be limited to less
Note 8:
Adjust pin bias current flows into the adjust pin. than 20mA.
Note 9:
Shutdown pin current at V
Note 3:
For junction temperatures greater than 110°C, a minimum load SHDN = 0V flows out of the shutdown pin. of 1mA is recommended. For T
Note 10:
Quiescent current in shutdown is equal to the sum total of the J > 110°C and IOUT < 1mA, output voltage may increase by 1%. shutdown pin current (6µA) and the ground pin current (9µA).
Note 4:
Operating conditions are limited by maximum junction
Note 11:
Reverse output current is tested with the input pin grounded and temperature. The regulated output voltage specification will not apply the output pin forced to the rated output voltage. This current flows into for all possible combinations of input voltage and output current. When the output pin and out of the ground pin. 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. 1121fg 4 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Applications Information Package Description Revision History Related Parts
