Datasheet LT1513, LT1513-2 (Analog Devices) - 3
| Hersteller | Analog Devices |
| Beschreibung | SEPIC Constant- or Programmable-Current/Constant-Voltage Battery Charger |
| Seiten / Seite | 16 / 3 — ELECTRICAL CH. ARA TERISTICS. VIN = 5V, VC = 0.6V, VFB = VREF, IFB = 0V, … |
| Dateiformat / Größe | PDF / 220 Kb |
| Dokumentensprache | Englisch |
ELECTRICAL CH. ARA TERISTICS. VIN = 5V, VC = 0.6V, VFB = VREF, IFB = 0V, VSW and S/S pins open, unless otherwise noted
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LT1513/LT1513-2
ELECTRICAL CH C ARA TERISTICS VIN = 5V, VC = 0.6V, VFB = VREF, IFB = 0V, VSW and S/S pins open, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Error Amplifier Clamp Voltage High Clamp, VFB = 1V 1.70 1.95 2.30 V Low Clamp, VFB = 1.5V 0.25 0.40 0.52 V AV Error Amplifier Voltage Gain 500 V/ V VC Pin Threshold Duty Cycle = 0% 0.8 1 1.25 V f Switching Frequency 2.7V ≤ VIN ≤ 25V 450 500 550 kHz 0°C ≤ TJ ≤ 125°C 430 500 580 kHz TJ < 0°C 400 580 kHz Maximum Switch Duty Cycle ● 85 95 % Switch Current Limit Blanking Time 130 260 ns BV Output Switch Breakdown Voltage 0°C ≤ TJ ≤ 125°C 40 47 V TJ < 0°C 35 V VSAT Output Switch ON Resistance ISW = 2A ● 0.25 0.45 Ω ILIM Switch Current Limit Duty Cycle = 50% ● 3.0 3.8 5.4 A Duty Cycle = 80% (Note 1) ● 2.6 3.4 5.0 A ∆IIN/∆ISW Supply Current Increase During Switch ON Time 15 25 mA/A Control Voltage to Switch Current 4 A/V Transconductance Minimum Input Voltage ● 2.4 2.7 V IQ Supply Current 2.7V ≤ VIN ≤ 25V ● 4 5.5 mA Shutdown Supply Current 2.7V ≤ VIN ≤ 25V, VS/S ≤ 0.6V, TJ ≥ 0°C ● 12 30 µA TJ < 0°C 50 µA Shutdown Threshold 2.7V ≤ VIN ≤ 25V ● 0.6 1.3 2 V Shutdown Delay ● 5 12 25 µs S/S Pin Input Current 0V ≤ VS/S ≤ 5V ● – 10 15 µA Synchronization Frequency Range ● 600 800 kHz The ● denotes specifications which apply over the full operating
Note 2:
The IFB pin is servoed to its regulating state with VC = 0.8V. temperature range.
Note 3:
Consult factory for grade selected parts.
Note 1:
For duty cycles (DC) between 50% and 85%, minimum
Note 4:
The IFB pin is sevoed to regulate FB to 1.245V guaranteed switch current is given by ILIM = 1.33 (2.75 – DC). sn1513 1513fas 3
ELECTRICAL CH C ARA TERISTICS VIN = 5V, VC = 0.6V, VFB = VREF, IFB = 0V, VSW and S/S pins open, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Error Amplifier Clamp Voltage High Clamp, VFB = 1V 1.70 1.95 2.30 V Low Clamp, VFB = 1.5V 0.25 0.40 0.52 V AV Error Amplifier Voltage Gain 500 V/ V VC Pin Threshold Duty Cycle = 0% 0.8 1 1.25 V f Switching Frequency 2.7V ≤ VIN ≤ 25V 450 500 550 kHz 0°C ≤ TJ ≤ 125°C 430 500 580 kHz TJ < 0°C 400 580 kHz Maximum Switch Duty Cycle ● 85 95 % Switch Current Limit Blanking Time 130 260 ns BV Output Switch Breakdown Voltage 0°C ≤ TJ ≤ 125°C 40 47 V TJ < 0°C 35 V VSAT Output Switch ON Resistance ISW = 2A ● 0.25 0.45 Ω ILIM Switch Current Limit Duty Cycle = 50% ● 3.0 3.8 5.4 A Duty Cycle = 80% (Note 1) ● 2.6 3.4 5.0 A ∆IIN/∆ISW Supply Current Increase During Switch ON Time 15 25 mA/A Control Voltage to Switch Current 4 A/V Transconductance Minimum Input Voltage ● 2.4 2.7 V IQ Supply Current 2.7V ≤ VIN ≤ 25V ● 4 5.5 mA Shutdown Supply Current 2.7V ≤ VIN ≤ 25V, VS/S ≤ 0.6V, TJ ≥ 0°C ● 12 30 µA TJ < 0°C 50 µA Shutdown Threshold 2.7V ≤ VIN ≤ 25V ● 0.6 1.3 2 V Shutdown Delay ● 5 12 25 µs S/S Pin Input Current 0V ≤ VS/S ≤ 5V ● – 10 15 µA Synchronization Frequency Range ● 600 800 kHz The ● denotes specifications which apply over the full operating
Note 2:
The IFB pin is servoed to its regulating state with VC = 0.8V. temperature range.
Note 3:
Consult factory for grade selected parts.
Note 1:
For duty cycles (DC) between 50% and 85%, minimum
Note 4:
The IFB pin is sevoed to regulate FB to 1.245V guaranteed switch current is given by ILIM = 1.33 (2.75 – DC). sn1513 1513fas 3