Datasheet LT3689, LT3689-5 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 700mA Step-Down Regulator with Power-On Reset and Watchdog Timer |
| Pages / Page | 34 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. No-Load Supply Current vs VIN. … |
| File Format / Size | PDF / 986 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. No-Load Supply Current vs VIN. No-Load Supply Current. Maximum Load Current, 5VOUT
Model Line for this Datasheet
- LT3689EMSE#PBF LT3689EMSE#TRPBF LT3689EMSE-5#PBF LT3689EMSE-5#TRPBF LT3689EUD#PBF LT3689EUD#TRPBF LT3689EUD-5#PBF LT3689EUD-5#TRPBF LT3689HMSE#PBF LT3689HMSE#TRPBF LT3689HMSE-5#PBF LT3689HMSE-5#TRPBF LT3689IMSE#PBF LT3689IMSE#TRPBF LT3689IMSE-5#PBF LT3689IMSE-5#TRPBF LT3689IUD#PBF LT3689IUD#TRPBF LT3689IUD-5#PBF LT3689IUD-5#TRPBF
Text Version of Document
LT3689/LT3689-5
TYPICAL PERFORMANCE CHARACTERISTICS No-Load Supply Current vs VIN No-Load Supply Current Maximum Load Current, 5VOUT
140 1.4 T 800 A = 25°C CATCH DIODE: DIODES INC. B140HB TYPICAL 120 700 VIN = 12V 1.2 VOUT = 3.3V 600 100 1.0 500 80 INCREASED SUPPLY 0.8 MINIMUM 400 CURRENT DUE TO CATCH DIODE LEAKAGE Y CURRENT (µA) 60 0.6 300 AT HIGH TEMPERATURE SUPPL 40 LOAD CURRENT (A) SUPPLY CURRENT (µA) 0.4 200 20 T 100 0.2 A = 25°C L = 12µH f = 1MHz 0 0 0 0 5 10 15 20 25 30 35 40 –50 –25 0 25 50 75 100 125 150 6 12 18 24 30 36 INPUT VOLTAGE (V) TEMPERATURE (°C) V 3689 G05 IN (V) 3689 G06 3689 G04
Maximum VIN for Full Frequency Maximum VIN for Full Frequency Maximum Output Current, 3.3VOUT
40 35 1.2 TYPICAL T 35 A = 25°C 30 TA = 25°C 1.0 30 TA = 85°C 25 TA = 85°C 0.8 25 MINIMUM 20 (V) 20 (V) 0.6 V IN V IN 15 15 10 LOAD CURRENT (A) 0.4 10 VO = 5V VO = 3.3V L = 6.8µH L = 4.7µH 0.2 TA = 25°C 5 5 f = 2MHz f = 2MHz L = 12µH SYNC = 5V SYNC = 3.3V f = 700kHz 0 0 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 4 8 12 16 20 24 28 32 36 LOAD CURRENT (A) LOAD CURRENT (A) VIN (V) 3689 G07 3689 G08 3689 G09
Switch Current Limit Switch Current Limit vs Duty Cycle vs Temperature Switch Voltage Drop
2.0 2.0 600 TA = 25°C SYNC = LOW 1.6 SYNC = LOW 500 TYPICAL 1.5 SYNC = HIGH 400 1.2 T MINIMUM A = 25°C 1.0 300 0.8 T TAGE DROP (mV) A = –50°C CURRENT LIMIT (A) CURRENT LIMIT (A) 200 VOL 0.5 T 0.4 A = 125°C 100 0 0 0 0 20 40 60 80 100 –50 –25 0 25 50 75 100 125 150 0 200 400 600 800 1000 DUTY CYCLE (%) TEMPERATURE (°C) SWITCH CURRENT (mA) 3689 G10 3689 G11 3689 G12 3689fe For more information www.linear.com/LT3689 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS No-Load Supply Current vs VIN No-Load Supply Current Maximum Load Current, 5VOUT
140 1.4 T 800 A = 25°C CATCH DIODE: DIODES INC. B140HB TYPICAL 120 700 VIN = 12V 1.2 VOUT = 3.3V 600 100 1.0 500 80 INCREASED SUPPLY 0.8 MINIMUM 400 CURRENT DUE TO CATCH DIODE LEAKAGE Y CURRENT (µA) 60 0.6 300 AT HIGH TEMPERATURE SUPPL 40 LOAD CURRENT (A) SUPPLY CURRENT (µA) 0.4 200 20 T 100 0.2 A = 25°C L = 12µH f = 1MHz 0 0 0 0 5 10 15 20 25 30 35 40 –50 –25 0 25 50 75 100 125 150 6 12 18 24 30 36 INPUT VOLTAGE (V) TEMPERATURE (°C) V 3689 G05 IN (V) 3689 G06 3689 G04
Maximum VIN for Full Frequency Maximum VIN for Full Frequency Maximum Output Current, 3.3VOUT
40 35 1.2 TYPICAL T 35 A = 25°C 30 TA = 25°C 1.0 30 TA = 85°C 25 TA = 85°C 0.8 25 MINIMUM 20 (V) 20 (V) 0.6 V IN V IN 15 15 10 LOAD CURRENT (A) 0.4 10 VO = 5V VO = 3.3V L = 6.8µH L = 4.7µH 0.2 TA = 25°C 5 5 f = 2MHz f = 2MHz L = 12µH SYNC = 5V SYNC = 3.3V f = 700kHz 0 0 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 4 8 12 16 20 24 28 32 36 LOAD CURRENT (A) LOAD CURRENT (A) VIN (V) 3689 G07 3689 G08 3689 G09
Switch Current Limit Switch Current Limit vs Duty Cycle vs Temperature Switch Voltage Drop
2.0 2.0 600 TA = 25°C SYNC = LOW 1.6 SYNC = LOW 500 TYPICAL 1.5 SYNC = HIGH 400 1.2 T MINIMUM A = 25°C 1.0 300 0.8 T TAGE DROP (mV) A = –50°C CURRENT LIMIT (A) CURRENT LIMIT (A) 200 VOL 0.5 T 0.4 A = 125°C 100 0 0 0 0 20 40 60 80 100 –50 –25 0 25 50 75 100 125 150 0 200 400 600 800 1000 DUTY CYCLE (%) TEMPERATURE (°C) SWITCH CURRENT (mA) 3689 G10 3689 G11 3689 G12 3689fe For more information www.linear.com/LT3689 5 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
