Datasheet LT3574 (Analog Devices) - 3
| Hersteller | Analog Devices |
| Beschreibung | Isolated Flyback Converter Without an Opto-Coupler |
| Seiten / Seite | 24 / 3 — The. denotes the specifications which apply over the full operating |
| Dateiformat / Größe | PDF / 296 Kb |
| Dokumentensprache | Englisch |
The. denotes the specifications which apply over the full operating
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LT3574 e lectrical characteristics
The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Error Amplifier Transconductance DI = 10µA, VIN = 3V 150 µmhos Minimum Switching Frequency VC = 0.35V 40 kHz TC Current into RREF RTC = 20.1k 27.5 µA BIAS Pin Voltage IBIAS = 30mA 2.9 3 3.1 V
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings to 125°C operating junction temperature range are assured by design may cause permanent damage to the device. Exposure to any Absolute characterization and correlation with statistical process controls. The Maximum Rating condition for extended periods may affect device LT3574I is guaranteed over the full –40°C to 125°C operating junction reliability and lifetime. temperature range.
Note 2:
The LT3574E is guaranteed to meet performance specifications
Note 3:
Current flows out of the RREF pin. from 0°C to 125°C junction temperature. Specifications over the –40°C typical perForMance characteristics
TA = 25°C, unless otherwise noted. Output Voltage Quiescent Current Bias Pin Voltage
5.20 6 3.2 V V IN = 40V 5.15 IN = 40V 5 BIAS = 20V 3.0 VIN = 12V 5.10 4 VIN = 5V 2.8 5.05 BIAS = 5V (V) 5.00 3 2.6 V OUT 4.95 2 BIAS VOLTAGE (V) 2.4 4.90 QUIESCENT CURRENT (mA) 1 2.2 4.85 4.80 0 2.0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3574 G01 3574 G02 3574 G03 3574f 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
The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 12V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
Error Amplifier Transconductance DI = 10µA, VIN = 3V 150 µmhos Minimum Switching Frequency VC = 0.35V 40 kHz TC Current into RREF RTC = 20.1k 27.5 µA BIAS Pin Voltage IBIAS = 30mA 2.9 3 3.1 V
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings to 125°C operating junction temperature range are assured by design may cause permanent damage to the device. Exposure to any Absolute characterization and correlation with statistical process controls. The Maximum Rating condition for extended periods may affect device LT3574I is guaranteed over the full –40°C to 125°C operating junction reliability and lifetime. temperature range.
Note 2:
The LT3574E is guaranteed to meet performance specifications
Note 3:
Current flows out of the RREF pin. from 0°C to 125°C junction temperature. Specifications over the –40°C typical perForMance characteristics
TA = 25°C, unless otherwise noted. Output Voltage Quiescent Current Bias Pin Voltage
5.20 6 3.2 V V IN = 40V 5.15 IN = 40V 5 BIAS = 20V 3.0 VIN = 12V 5.10 4 VIN = 5V 2.8 5.05 BIAS = 5V (V) 5.00 3 2.6 V OUT 4.95 2 BIAS VOLTAGE (V) 2.4 4.90 QUIESCENT CURRENT (mA) 1 2.2 4.85 4.80 0 2.0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) TEMPERATURE (°C) 3574 G01 3574 G02 3574 G03 3574f 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