Datasheet LT1425 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Isolated Flyback Switching Regulators |
| Pages / Page | 20 / 3 — ELECTRICAL CHARACTERISTICS VIN = 5V, TJ = 25. C, VSW Open, VC = 1.4V, … |
| File Format / Size | PDF / 302 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS VIN = 5V, TJ = 25. C, VSW Open, VC = 1.4V, unless otherwise specified. SYMBOL. PARAMETER. CONDITIONS
Model Line for this Datasheet
Text Version of Document
LT1425
ELECTRICAL CHARACTERISTICS VIN = 5V, TJ = 25
°
C, VSW Open, VC = 1.4V, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Load Compensation
∆VRCCOMP/∆ISW 0.45 Ω
SYNC Function
Minimum SYNC Amplitude ● 1.5 2.2 V Synchronization Range 320 450 kHz SYNC Pin Input Resistance 40 kΩ
Power Supply
VIN(MIN) Minimum Input Voltage ● 2.8 3.1 V ICC Supply Current ● 7.0 9.5 mA Shutdown Mode Supply Current ● 15 40 µA Shutdown Mode Threshold ● 0.4 0.9 1.3 V The ● denotes the specifications which apply over the full operating
Note 2:
Feedback amplifier transconductance is RREF referred. temperature range.
Note 3:
Voltage gain is RREF referred.
Note 1:
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
W U TYPICAL PERFORMANCE CHARACTERISTICS Switch Saturation Voltage vs Switch Current Limit vs Minimum Input Voltage vs Switch Current Duty Cycle Temperature
1.2 2.0 3.1 TA = 25°C 3.0 1.0 125°C 1.5 2.9 0.8 25°C 2.8 0.6 1.0 2.7 –55°C 0.4 INPUT VOLTAGE (V) 2.6 0.5 SWITCH CURRENT LIMIT (A) 0.2 2.5 SWITCH SATURATION VOLTAGE (V) 2.4 0 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 10 20 30 40 50 60 70 80 90 100 –50 –25 0 25 50 75 100 125 SWITCH CURRENT (A) DUTY CYCLE (%) TEMPERATURE (°C) 1425 G01 1425 G02 1425 G03 3
ELECTRICAL CHARACTERISTICS VIN = 5V, TJ = 25
°
C, VSW Open, VC = 1.4V, unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Load Compensation
∆VRCCOMP/∆ISW 0.45 Ω
SYNC Function
Minimum SYNC Amplitude ● 1.5 2.2 V Synchronization Range 320 450 kHz SYNC Pin Input Resistance 40 kΩ
Power Supply
VIN(MIN) Minimum Input Voltage ● 2.8 3.1 V ICC Supply Current ● 7.0 9.5 mA Shutdown Mode Supply Current ● 15 40 µA Shutdown Mode Threshold ● 0.4 0.9 1.3 V The ● denotes the specifications which apply over the full operating
Note 2:
Feedback amplifier transconductance is RREF referred. temperature range.
Note 3:
Voltage gain is RREF referred.
Note 1:
Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.
W U TYPICAL PERFORMANCE CHARACTERISTICS Switch Saturation Voltage vs Switch Current Limit vs Minimum Input Voltage vs Switch Current Duty Cycle Temperature
1.2 2.0 3.1 TA = 25°C 3.0 1.0 125°C 1.5 2.9 0.8 25°C 2.8 0.6 1.0 2.7 –55°C 0.4 INPUT VOLTAGE (V) 2.6 0.5 SWITCH CURRENT LIMIT (A) 0.2 2.5 SWITCH SATURATION VOLTAGE (V) 2.4 0 0 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 0 10 20 30 40 50 60 70 80 90 100 –50 –25 0 25 50 75 100 125 SWITCH CURRENT (A) DUTY CYCLE (%) TEMPERATURE (°C) 1425 G01 1425 G02 1425 G03 3
