Datasheet LT8331 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Low IQ Boost/SEPIC/Flyback/Inverting Converter with 0.5A, 140V Switch |
| Pages / Page | 30 / 5 — TYPICAL PERFORMANCE CHARACTERISTICS. VIN Pin Current (Sleep Mode, Not. … |
| Revision | B |
| File Format / Size | PDF / 2.4 Mb |
| Document Language | English |
TYPICAL PERFORMANCE CHARACTERISTICS. VIN Pin Current (Sleep Mode, Not. VIN Pin Current (Active Mode, Not
Text Version of Document
LT8331
TYPICAL PERFORMANCE CHARACTERISTICS VIN Pin Current (Sleep Mode, Not VIN Pin Current (Active Mode, Not VIN Pin Current (Active Mode, Not Switching) vs Temperature Switching) vs Temperature Switching) vs Temperature
10.00 1000 30 VIN = 12V VIN = 12V VIN = 12V 8.75 VSYNC/MODE = 0V 950 VSYNC/MODE = 0V VSYNC/MODE = 0V V 25 BIAS = 0V VBIAS = 0V VBIAS = 5V 7.50 900 μA) 20 6.25 850 5.00 800 15 3.75 PIN CURRENT ( 750 PIN CURRENT (μA) PIN CURRENT (μA) 10 V IN 2.50 V IN 700 V IN 5 1.25 650 0 600 0 –50 –25 0 25 50 75 100 125 150 175 –50 –25 0 25 50 75 100 125 150 175 –50 –25 0 25 50 75 100 125 150 175 JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) 8331 G10 8331 G11 8331 G12
Switching Waveforms Switching Waveforms Switching Waveforms (in CCM) (in DCM/Light Burst Mode) (in Deep Burst Mode)
IL1+IL2 IL1+IL2 I 200mA/DIV L1+IL2 200mA/DIV 200mA/DIV VSW VSW VSW 50V/DIV 50V/DIV 50V/DIV 2µs/DIV 8331 G13 2µs/DIV 8331 G14 5µs/DIV 8331 G15 FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN = 48V, VOUT = 48V, ILOAD = 165mA VIN = 48V, VOUT = 48V, ILOAD = 15mA VIN = 48V, VOUT = 48V, ILOAD = 3mA
VOUT Transient Response: Load VOUT Transient Response: Load Current Transients from 82.5mA Current Transients from 5mA to Burst Frequency vs Load Current to 165mA to 82.5mA 165mA to 5mA
600 FRONT PAGE APPLICATION VIN = 48V, VOUT = 48V I 450 LOAD 100mA/DIV ILOAD 100mA/DIV 300 VOUT VOUT 500mV/DIV 1V/DIV 150 SWITCHING FREQUENCY (kHz) 200µs/DIV 8331 G17 500µs/DIV 8331 G18 FRONT PAGE APPLICATION FRONT PAGE APPLICATION 0 VIN = 48V, VOUT = 48V VIN = 48V, VOUT = 48V 0 20 40 60 80 100 LOAD CURRENT (mA) 8331 G16 Rev. B For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
TYPICAL PERFORMANCE CHARACTERISTICS VIN Pin Current (Sleep Mode, Not VIN Pin Current (Active Mode, Not VIN Pin Current (Active Mode, Not Switching) vs Temperature Switching) vs Temperature Switching) vs Temperature
10.00 1000 30 VIN = 12V VIN = 12V VIN = 12V 8.75 VSYNC/MODE = 0V 950 VSYNC/MODE = 0V VSYNC/MODE = 0V V 25 BIAS = 0V VBIAS = 0V VBIAS = 5V 7.50 900 μA) 20 6.25 850 5.00 800 15 3.75 PIN CURRENT ( 750 PIN CURRENT (μA) PIN CURRENT (μA) 10 V IN 2.50 V IN 700 V IN 5 1.25 650 0 600 0 –50 –25 0 25 50 75 100 125 150 175 –50 –25 0 25 50 75 100 125 150 175 –50 –25 0 25 50 75 100 125 150 175 JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) JUNCTION TEMPERATURE (°C) 8331 G10 8331 G11 8331 G12
Switching Waveforms Switching Waveforms Switching Waveforms (in CCM) (in DCM/Light Burst Mode) (in Deep Burst Mode)
IL1+IL2 IL1+IL2 I 200mA/DIV L1+IL2 200mA/DIV 200mA/DIV VSW VSW VSW 50V/DIV 50V/DIV 50V/DIV 2µs/DIV 8331 G13 2µs/DIV 8331 G14 5µs/DIV 8331 G15 FRONT PAGE APPLICATION FRONT PAGE APPLICATION FRONT PAGE APPLICATION VIN = 48V, VOUT = 48V, ILOAD = 165mA VIN = 48V, VOUT = 48V, ILOAD = 15mA VIN = 48V, VOUT = 48V, ILOAD = 3mA
VOUT Transient Response: Load VOUT Transient Response: Load Current Transients from 82.5mA Current Transients from 5mA to Burst Frequency vs Load Current to 165mA to 82.5mA 165mA to 5mA
600 FRONT PAGE APPLICATION VIN = 48V, VOUT = 48V I 450 LOAD 100mA/DIV ILOAD 100mA/DIV 300 VOUT VOUT 500mV/DIV 1V/DIV 150 SWITCHING FREQUENCY (kHz) 200µs/DIV 8331 G17 500µs/DIV 8331 G18 FRONT PAGE APPLICATION FRONT PAGE APPLICATION 0 VIN = 48V, VOUT = 48V VIN = 48V, VOUT = 48V 0 20 40 60 80 100 LOAD CURRENT (mA) 8331 G16 Rev. B For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
