Datasheet LT3509 (Analog Devices) - 4
| Manufacturer | Analog Devices |
| Description | Dual 36V, 700mA Step-Down Regulator |
| Pages / Page | 24 / 4 — Typical perForMance characTerisTics. Efficiency vs Load Current. VOUT = … |
| File Format / Size | PDF / 328 Kb |
| Document Language | English |
Typical perForMance characTerisTics. Efficiency vs Load Current. VOUT = 5V, fSW = 2.0MHz. VOUT = 3.3V, fSW = 2.0MHz
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LT3509
Typical perForMance characTerisTics Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current VOUT = 5V, fSW = 2.0MHz VOUT = 3.3V, fSW = 2.0MHz VOUT = 1.8V, fSW = 0.7MHz
95 95 90 TA = 25ºC TA = 25ºC TA = 25ºC 90 90 85 VIN = 12V 85 85 80 VIN = 12V 80 75 80 VIN = 12V VIN = 24V 75 70 75 EFFICIENCY (%) EFFICIENCY (%) 70 EFFICIENCY (%) 65 70 65 60 65 60 55 60 55 50 0 0.2 0.4 0.6 0.8 0 0.2 0.4 0.6 0.8 0 0.2 0.4 0.6 0.8 ILOAD(A) ILOAD(A) ILOAD(A) 3509 G01 3509 G02 3509 G03
Switch VCE(SAT) vs ISW IBOOST vs ISW
0.35 25 TA = 25ºC TA = 25ºC 0.3 20 0.25 (V) 0.2 15 T) (mA) 0.15 V CE(SA I BOOST 10 0.1 5 0.05 0 0 0 0.2 0.4 0.6 0.8 1.0 0 0.2 0.4 0.6 0.8 1 ISW(A) ISW(A) 3509 G04 3509 G05
Boost Diode Characteristics Frequency vs RT
1.2 2.2 TA = 25ºC T 2.0 A = 25ºC 1 0.8 1.5 (V) 0.6 V f 1.0 0.4 FREQUENCY (MHz) 0.5 0.2 0 0 0 50 100 150 0 20 40 60 80 100 120 140 160 180 BOOST DIODE CURRENT (mA) RT(kΩ) 3509 G06 3509 G07 3509fd 4 For more information www.linear.com/LT3509 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Related Parts
Typical perForMance characTerisTics Efficiency vs Load Current Efficiency vs Load Current Efficiency vs Load Current VOUT = 5V, fSW = 2.0MHz VOUT = 3.3V, fSW = 2.0MHz VOUT = 1.8V, fSW = 0.7MHz
95 95 90 TA = 25ºC TA = 25ºC TA = 25ºC 90 90 85 VIN = 12V 85 85 80 VIN = 12V 80 75 80 VIN = 12V VIN = 24V 75 70 75 EFFICIENCY (%) EFFICIENCY (%) 70 EFFICIENCY (%) 65 70 65 60 65 60 55 60 55 50 0 0.2 0.4 0.6 0.8 0 0.2 0.4 0.6 0.8 0 0.2 0.4 0.6 0.8 ILOAD(A) ILOAD(A) ILOAD(A) 3509 G01 3509 G02 3509 G03
Switch VCE(SAT) vs ISW IBOOST vs ISW
0.35 25 TA = 25ºC TA = 25ºC 0.3 20 0.25 (V) 0.2 15 T) (mA) 0.15 V CE(SA I BOOST 10 0.1 5 0.05 0 0 0 0.2 0.4 0.6 0.8 1.0 0 0.2 0.4 0.6 0.8 1 ISW(A) ISW(A) 3509 G04 3509 G05
Boost Diode Characteristics Frequency vs RT
1.2 2.2 TA = 25ºC T 2.0 A = 25ºC 1 0.8 1.5 (V) 0.6 V f 1.0 0.4 FREQUENCY (MHz) 0.5 0.2 0 0 0 50 100 150 0 20 40 60 80 100 120 140 160 180 BOOST DIODE CURRENT (mA) RT(kΩ) 3509 G06 3509 G07 3509fd 4 For more information www.linear.com/LT3509 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Related Parts
