Datasheet LT3487 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | Boost and Inverting Switching Regulator for CCD Bias |
| Pages / Page | 16 / 5 — TYPICAL PERFOR A CE CHARACTERISTICS. Switch Current Limits. Output … |
| File Format / Size | PDF / 296 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS. Switch Current Limits. Output Disconnect Current Limit. vs Duty Cycle
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LT3487
W U TYPICAL PERFOR A CE CHARACTERISTICS Switch Current Limits Output Disconnect Current Limit Switch Current Limits vs Duty Cycle
200 1200 1200 VCAP = 15V VBAT = 3.6V 1150 NEG CHANNEL V 1000 POS = 0V NEG CHANNEL 175 1100 800 1050 P0S CHANNEL 150 1000 600 950 POS CHANNEL 400 CURRENT LIMIT (mA) 125 CURRENT LIMITS (mA) CURRENT LIMITS (mA) 900 200 850 100 800 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) DUTY CYCLE (%) 3487 G12 3487 G13 3487 G14
Switch Current Limits vs RUN/SS RUN/SS Pin Current Voltage (at 55% Duty Cycle) RUN/SS Pin Current in Shutdown vs VIN in Shutdown
1000 3.0 2.0 NEG CHANNEL 2.5 800 µA) 1.5 P0S CHANNEL 2.0 600 µA) ( 1.5 1.0 400 I RUN/SS 1.0 CURRENT LIMITS (mA) 0.5 RUN/SS PIN CURRENT ( 200 0.5 0 0 0 0 250 500 750 1000 1250 1500 –50 –25 0 25 50 75 100 125 2 4 6 8 10 12 14 16 RUN/SS (mV) TEMPERATURE (°C) VIN (V) 3487 G15 3487 G16 3487 G17
UVLO Voltage RUN/SS Shutdown Threshold
2.5 300 250 2.4 200 2.3 (mV) 150 UVLO (V) 2.2 RUN/SSV 100 2.1 50 2.0 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) 3487 G18 3487 G19 3487f 5
W U TYPICAL PERFOR A CE CHARACTERISTICS Switch Current Limits Output Disconnect Current Limit Switch Current Limits vs Duty Cycle
200 1200 1200 VCAP = 15V VBAT = 3.6V 1150 NEG CHANNEL V 1000 POS = 0V NEG CHANNEL 175 1100 800 1050 P0S CHANNEL 150 1000 600 950 POS CHANNEL 400 CURRENT LIMIT (mA) 125 CURRENT LIMITS (mA) CURRENT LIMITS (mA) 900 200 850 100 800 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 0 20 40 60 80 100 TEMPERATURE (°C) TEMPERATURE (°C) DUTY CYCLE (%) 3487 G12 3487 G13 3487 G14
Switch Current Limits vs RUN/SS RUN/SS Pin Current Voltage (at 55% Duty Cycle) RUN/SS Pin Current in Shutdown vs VIN in Shutdown
1000 3.0 2.0 NEG CHANNEL 2.5 800 µA) 1.5 P0S CHANNEL 2.0 600 µA) ( 1.5 1.0 400 I RUN/SS 1.0 CURRENT LIMITS (mA) 0.5 RUN/SS PIN CURRENT ( 200 0.5 0 0 0 0 250 500 750 1000 1250 1500 –50 –25 0 25 50 75 100 125 2 4 6 8 10 12 14 16 RUN/SS (mV) TEMPERATURE (°C) VIN (V) 3487 G15 3487 G16 3487 G17
UVLO Voltage RUN/SS Shutdown Threshold
2.5 300 250 2.4 200 2.3 (mV) 150 UVLO (V) 2.2 RUN/SSV 100 2.1 50 2.0 0 –50 –25 0 25 50 75 100 125 –50 –25 0 25 50 75 100 125 TEMPERATURE (°C) TEMPERATURE (°C) 3487 G18 3487 G19 3487f 5
