Datasheet LT8610AC, LT8610AC-1 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 42V, 3.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current |
| Pages / Page | 26 / 5 — Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. No … |
| File Format / Size | PDF / 552 Kb |
| Document Language | English |
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. No Load Supply Current
Text Version of Document
LT8610AC/LT8610AC-1
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. No Load Supply Current No Load Supply Current Top FET Current Limit vs Duty Cycle
5.0 25 8.0 V V 4.5 OUT = 3.3V OUT = 3.3V IN REGULATION VIN = 12V 7.5 4.0 20 IN REGULATION 7.0 3.5 6.5 3.0 15 6.0 2.5 5.5 2.0 10 5.0 INPUT CURRENT (µA) 1.5 INPUT CURRENT (µA) CURRENT LIMIT (A) 4.5 1.0 5 4.0 0.5 3.5 0 0 3.0 0 5 10 15 20 25 30 35 40 45 –55 –25 5 35 65 95 125 155 0 0.2 0.4 0.6 0.8 1.0 INPUT VOLTAGE (V) TEMPERATURE (°C) DUTY CYCLE 8610ac1 G10 8610ac1 G11 8610ac1 G12
Top FET Current Limit Bottom FET Current Limit Switch Drop
7.00 5.50 250 SWITCH CURRENT = 1A 6.75 5.25 6.50 5.00 200 30% DC 6.25 4.75 6.00 4.50 150 TOP SW 5.75 4.25 5.50 4.00 100 BOT SW CURRENT LIMIT (A) 5.25 CURRENT LIMIT (A) 3.75 SWITCH DROP (mV) 5.00 3.50 50 4.75 3.25 4.50 3.00 0 –55 –25 5 35 65 95 125 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 8610ac1 G13 8610ac1 G14 8610ac1 G15
Switch Drop Minimum On-Time Minimum Off-Time
450 45 125 ILOAD = 1.5A VOUT = 3.3V 400 43 VSYNC = 5V 120 ILOAD = 0.5A 350 41 115 110 300 39 37 105 250 TOP SW 35 100 200 BOT SW 33 95 150 SWITCH DROP (mV) 31 90 100 MINIMUM ON-TIME (ns) MINIMUM OFF-TIME (ns) 29 85 50 27 VOUT = 3.3V 80 VOUT = 0.8V 0 25 75 0 0.5 1 1.5 2 2.5 3 –55 –25 5 35 65 95 125 155 –50 –25 5 35 65 95 125 155 SWITCH CURRENT (A) TEMPERATURE (°C) TEMPERATURE (°C) 8610ac1 G16 8610ac1 G17 8610ac1 G18 8610acfa For more information www.linear.com/LT8610AC 5 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 Typical Application Related Parts
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. No Load Supply Current No Load Supply Current Top FET Current Limit vs Duty Cycle
5.0 25 8.0 V V 4.5 OUT = 3.3V OUT = 3.3V IN REGULATION VIN = 12V 7.5 4.0 20 IN REGULATION 7.0 3.5 6.5 3.0 15 6.0 2.5 5.5 2.0 10 5.0 INPUT CURRENT (µA) 1.5 INPUT CURRENT (µA) CURRENT LIMIT (A) 4.5 1.0 5 4.0 0.5 3.5 0 0 3.0 0 5 10 15 20 25 30 35 40 45 –55 –25 5 35 65 95 125 155 0 0.2 0.4 0.6 0.8 1.0 INPUT VOLTAGE (V) TEMPERATURE (°C) DUTY CYCLE 8610ac1 G10 8610ac1 G11 8610ac1 G12
Top FET Current Limit Bottom FET Current Limit Switch Drop
7.00 5.50 250 SWITCH CURRENT = 1A 6.75 5.25 6.50 5.00 200 30% DC 6.25 4.75 6.00 4.50 150 TOP SW 5.75 4.25 5.50 4.00 100 BOT SW CURRENT LIMIT (A) 5.25 CURRENT LIMIT (A) 3.75 SWITCH DROP (mV) 5.00 3.50 50 4.75 3.25 4.50 3.00 0 –55 –25 5 35 65 95 125 –55 –25 5 35 65 95 125 155 –55 –25 5 35 65 95 125 155 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 8610ac1 G13 8610ac1 G14 8610ac1 G15
Switch Drop Minimum On-Time Minimum Off-Time
450 45 125 ILOAD = 1.5A VOUT = 3.3V 400 43 VSYNC = 5V 120 ILOAD = 0.5A 350 41 115 110 300 39 37 105 250 TOP SW 35 100 200 BOT SW 33 95 150 SWITCH DROP (mV) 31 90 100 MINIMUM ON-TIME (ns) MINIMUM OFF-TIME (ns) 29 85 50 27 VOUT = 3.3V 80 VOUT = 0.8V 0 25 75 0 0.5 1 1.5 2 2.5 3 –55 –25 5 35 65 95 125 155 –50 –25 5 35 65 95 125 155 SWITCH CURRENT (A) TEMPERATURE (°C) TEMPERATURE (°C) 8610ac1 G16 8610ac1 G17 8610ac1 G18 8610acfa For more information www.linear.com/LT8610AC 5 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 Typical Application Related Parts
