Datasheet LT8610 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | 42V, 2.5A Synchronous Step-Down Regulator with 2.5μA Quiescent Current |
| Pages / Page | 22 / 7 — TYPICAL PERFORMANCE CHARACTERISTICS. RT Programmed Switching. Frequency. … |
| File Format / Size | PDF / 308 Kb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. RT Programmed Switching. Frequency. VIN UVLO. Bias Pin Current. Switching Waveforms
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LT8610
TYPICAL PERFORMANCE CHARACTERISTICS RT Programmed Switching Frequency VIN UVLO Bias Pin Current
250 3.6 5.00 VBIAS = 5V 225 3.4 4.75 VOUT = 5V I 200 LOAD = 1A 3.2 4.50 fSW = 700kHz 175 150 3.0 4.25 125 2.8 4.00 100 2.6 3.75 INPUT VOLTAGE (V) RT PIN RESISTOR (kΩ) 75 2.4 BIAS PIN CURRENT (mA) 3.50 50 2.2 25 3.25 0 2.0 3.00 0.2 0.6 1 1.4 1.8 2.2 –55 –25 5 35 65 95 125 155 5 10 15 20 25 30 35 40 45 SWITCHING FREQUENCY (MHz) TEMPERATURE (°C) INPUT VOLTAGE (V) 8610 G27 8610 G28 8610 G29
Bias Pin Current Switching Waveforms Switching Waveforms
12 VBIAS = 5V VOUT = 5V I I 10 L L VIN = 12V 1A/DIV 200mA/DIV ILOAD = 1A 8 VSW VSW 6 5V/DIV 5V/DIV 4 500ns/DIV 8610 G31 500µs/DIV 8610 G32 BIAS PIN CURRENT (mA) 12VIN TO 5VOUT AT 1A 12VIN TO 5VOUT AT 10mA 2 VSYNC = 0V 0 0 0.5 1 1.5 2 2.5 SWITCHING FREQUENCY (MHz) 8610 G30
Switching Waveforms Transient Response Transient Response
IL ILOAD 1A/DIV ILOAD 1A/DIV 1A/DIV V VOUT V SW OUT 10V/DIV 100mV/DIV 200mV/DIV 500ns/DIV 8610 G33 50µs/DIV 8610 G34 50µs/DIV 8610 G35 36VIN TO 5VOUT AT 1A 0.5A TO 1.5A TRANSIENT 0.5A TO 2.5A TRANSIENT 12VIN, 5VOUT 12VIN, 5VOUT COUT = 47µF COUT = 47µF 8610fa For more information www.linear.com/LT8610 7 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 RT Programmed Switching Frequency VIN UVLO Bias Pin Current
250 3.6 5.00 VBIAS = 5V 225 3.4 4.75 VOUT = 5V I 200 LOAD = 1A 3.2 4.50 fSW = 700kHz 175 150 3.0 4.25 125 2.8 4.00 100 2.6 3.75 INPUT VOLTAGE (V) RT PIN RESISTOR (kΩ) 75 2.4 BIAS PIN CURRENT (mA) 3.50 50 2.2 25 3.25 0 2.0 3.00 0.2 0.6 1 1.4 1.8 2.2 –55 –25 5 35 65 95 125 155 5 10 15 20 25 30 35 40 45 SWITCHING FREQUENCY (MHz) TEMPERATURE (°C) INPUT VOLTAGE (V) 8610 G27 8610 G28 8610 G29
Bias Pin Current Switching Waveforms Switching Waveforms
12 VBIAS = 5V VOUT = 5V I I 10 L L VIN = 12V 1A/DIV 200mA/DIV ILOAD = 1A 8 VSW VSW 6 5V/DIV 5V/DIV 4 500ns/DIV 8610 G31 500µs/DIV 8610 G32 BIAS PIN CURRENT (mA) 12VIN TO 5VOUT AT 1A 12VIN TO 5VOUT AT 10mA 2 VSYNC = 0V 0 0 0.5 1 1.5 2 2.5 SWITCHING FREQUENCY (MHz) 8610 G30
Switching Waveforms Transient Response Transient Response
IL ILOAD 1A/DIV ILOAD 1A/DIV 1A/DIV V VOUT V SW OUT 10V/DIV 100mV/DIV 200mV/DIV 500ns/DIV 8610 G33 50µs/DIV 8610 G34 50µs/DIV 8610 G35 36VIN TO 5VOUT AT 1A 0.5A TO 1.5A TRANSIENT 0.5A TO 2.5A TRANSIENT 12VIN, 5VOUT 12VIN, 5VOUT COUT = 47µF COUT = 47µF 8610fa For more information www.linear.com/LT8610 7 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
