Datasheet LT3971, LT3971-3.3, LT3971-5 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | 38V, 1.2A, 2MHz Step-Down Regulator with 2.8μA Quiescent Current |
| Pages / Page | 28 / 4 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| File Format / Size | PDF / 643 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
Model Line for this Datasheet
- LT3971EDD#PBF LT3971EDD#TRPBF LT3971EDD-3.3#PBF LT3971EDD-3.3#TRPBF LT3971EDD-5#PBF LT3971EDD-5#TRPBF LT3971EMSE#PBF LT3971EMSE#TRPBF LT3971EMSE-3.3#PBF LT3971EMSE-3.3#TRPBF LT3971EMSE-5#PBF LT3971EMSE-5#TRPBF LT3971EMSE16#PBF LT3971EMSE16#TRPBF LT3971IDD#PBF LT3971IDD#TRPBF LT3971IDD-3.3#PBF LT3971IDD-3.3#TRPBF LT3971IDD-5#PBF LT3971IDD-5#TRPBF LT3971IMSE#PBF LT3971IMSE#TRPBF LT3971IMSE-3.3#PBF LT3971IMSE-3.3#TRPBF LT3971IMSE-5#PBF LT3971IMSE-5#TRPBF LT3971IMSE16#PBF LT3971IMSE16#TRPBF
Text Version of Document
LT3971/LT3971-3.3/LT3971-5
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, VEN = 12V, VBD = 3.3V unless otherwise noted. (Note 2)
PG Leakage VPG = 3V 0.02 1 µA PG Sink Current VPG = 0.4V l 300 570 μA SYNC Threshold 0.6 0.8 1.0 V SYNC Pin Current 0.1 nA SS Source Current VSS = 1V 0.6 1 1.6 μA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings temperature range. High junction temperatures degrade operating may cause permanent damage to the device. Exposure to any Absolute lifetimes. Operating lifetime is derated at junction temperatures greater Maximum Rating condition for extended periods may affect device than 125°C. reliability and lifetime.
Note 3:
This is the minimum voltage across the boost capacitor needed to
Note 2:
The LT3971E is guaranteed to meet performance specifications guarantee full saturation of the switch. from 0°C to 125°C junction temperature. Specifications over the –40°C
Note 4:
This is the minimum input voltage for operation with accurate FB to 125°C operating junction temperature range are assured by design, regulation. Minimum input voltage for output regulation depends on the characterization, and correlation with statistical process controls. The application circuit. LT3971I is guaranteed over the full –40°C to 125°C operating junction
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency, VOUT = 5V Efficiency, VOUT = 3.3V Efficiency, VOUT = 5V
100 100 100 VOUT = 5V 90 VIN = 12V 90 90 R1 = 1M VIN = 12V R2 = 309k 80 80 80 70 VIN = 12V 70 VIN = 36V 70 60 V VIN = 24V VIN = 24V V V IN = 36V 60 IN = 24V 60 IN = 36V 50 40 EFFICIENCY (%) 50 EFFICIENCY (%) 50 EFFICIENCY (%) 30 40 40 20 30 VOUT = 5V R1 = 1M 30 10 R2 = 309k 20 20 0 0 0.2 0.4 0.6 0.8 1 1.2 0 0.2 0.4 0.6 0.8 1 1.2 0.01 0.1 1 10 100 1000 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (mA) 3971 G01 3971 G02 3971 G03
Efficiency, VOUT = 3.3V No Load Supply Current No Load Supply Current
90 100 4.0 DIODES, INC. 80 DFLS2100 VIN = 12V 3.5 70 LT3971 60 V 3.0 IN = 24V VOUT = 3.3V VIN = 36V 50 10 2.5 40 LT3971-5 EFFICIENCY (%) 30 2.0 INPUT CURRENT (µA) INPUT CURRENT (µA) LT3971-3.3 20 1.5 10 0 1 1.0 0.01 0.1 1 10 100 1000 –55 –25 5 35 65 95 125 155 5 10 15 20 25 30 35 LOAD CURRENT (mA) TEMPERATURE (°C) INPUT VOLTAGE (V) 3971 G04 3971 G05 3971 G06 3971fd 4 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications 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. VIN = 12V, VEN = 12V, VBD = 3.3V unless otherwise noted. (Note 2)
PG Leakage VPG = 3V 0.02 1 µA PG Sink Current VPG = 0.4V l 300 570 μA SYNC Threshold 0.6 0.8 1.0 V SYNC Pin Current 0.1 nA SS Source Current VSS = 1V 0.6 1 1.6 μA
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings temperature range. High junction temperatures degrade operating may cause permanent damage to the device. Exposure to any Absolute lifetimes. Operating lifetime is derated at junction temperatures greater Maximum Rating condition for extended periods may affect device than 125°C. reliability and lifetime.
Note 3:
This is the minimum voltage across the boost capacitor needed to
Note 2:
The LT3971E is guaranteed to meet performance specifications guarantee full saturation of the switch. from 0°C to 125°C junction temperature. Specifications over the –40°C
Note 4:
This is the minimum input voltage for operation with accurate FB to 125°C operating junction temperature range are assured by design, regulation. Minimum input voltage for output regulation depends on the characterization, and correlation with statistical process controls. The application circuit. LT3971I is guaranteed over the full –40°C to 125°C operating junction
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, unless otherwise noted. Efficiency, VOUT = 5V Efficiency, VOUT = 3.3V Efficiency, VOUT = 5V
100 100 100 VOUT = 5V 90 VIN = 12V 90 90 R1 = 1M VIN = 12V R2 = 309k 80 80 80 70 VIN = 12V 70 VIN = 36V 70 60 V VIN = 24V VIN = 24V V V IN = 36V 60 IN = 24V 60 IN = 36V 50 40 EFFICIENCY (%) 50 EFFICIENCY (%) 50 EFFICIENCY (%) 30 40 40 20 30 VOUT = 5V R1 = 1M 30 10 R2 = 309k 20 20 0 0 0.2 0.4 0.6 0.8 1 1.2 0 0.2 0.4 0.6 0.8 1 1.2 0.01 0.1 1 10 100 1000 LOAD CURRENT (A) LOAD CURRENT (A) LOAD CURRENT (mA) 3971 G01 3971 G02 3971 G03
Efficiency, VOUT = 3.3V No Load Supply Current No Load Supply Current
90 100 4.0 DIODES, INC. 80 DFLS2100 VIN = 12V 3.5 70 LT3971 60 V 3.0 IN = 24V VOUT = 3.3V VIN = 36V 50 10 2.5 40 LT3971-5 EFFICIENCY (%) 30 2.0 INPUT CURRENT (µA) INPUT CURRENT (µA) LT3971-3.3 20 1.5 10 0 1 1.0 0.01 0.1 1 10 100 1000 –55 –25 5 35 65 95 125 155 5 10 15 20 25 30 35 LOAD CURRENT (mA) TEMPERATURE (°C) INPUT VOLTAGE (V) 3971 G04 3971 G05 3971 G06 3971fd 4 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Related Parts
