Datasheet LTC3560 (Analog Devices) - 3
| Hersteller | Analog Devices |
| Beschreibung | 2.25MHz, 800mA Synchronous Step-Down Regulator in ThinSOT |
| Seiten / Seite | 16 / 3 — ELECTRICAL CHARACTERISTICS. The. denotes the specifi cations which apply … |
| Dateiformat / Größe | PDF / 267 Kb |
| Dokumentensprache | Englisch |
ELECTRICAL CHARACTERISTICS. The. denotes the specifi cations which apply over the full operating
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LTC3560
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VIN = 3.6V unless otherwise specifi ed. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VRUN RUN Threshold l 0.3 1 1.5 V IRUN RUN Leakage Current l ±0.01 ±1 μA VSYNC/MODE SYNC/MODE Threshold l 0.3 1.0 1.5 V ISYNC/MODE SYNC/MODE Leakage Current l ±0.01 ±1 μA tSOFTSTART Soft-Start Time VFB from 10% to 90% Full Scale 0.6 0.9 1.2 ms
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
The LTC3560 is tested in a proprietary test mode that connects VFB may cause permanent damage to the device. Exposure to any Absolute to the output of the error amplifi er. Maximum Rating condition for extended periods may affect device
Note 5:
Dynamic supply current is higher due to the gate charge being reliability and lifetime. delivered at the switching frequency.
Note 2:
The LTC3560E is guaranteed to meet performance specifi cations
Note 6:
Guaranteed by long-term current density limitations. from 0°C to 85°C. Specifi cations over the – 40°C to 85°C operating
Note 7:
This IC includes overtemperature protection that is intended temperature range are assured by design, characterization and correlation to protect the device during momentary overload conditions. Junction with statistical process controls. The LTC3560I is guaranteed to meet temperature will exceed 125°C when overtemperature protection is active. specifi ed performance specifi cations over the full – 40°C to 125°C Continuous operation above the specifi ed maximum operating junction operating temperature range. temperature may impair device reliability.
Note 3:
TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formula: LTC3560: TJ = TA + (PD)(250°C/W)
TYPICAL PERFORMANCE CHARACTERISTICS (From Figure 1a Except for the Resistive Divider Resistor Values) Effi ciency vs Input Voltage Effi ciency vs Output Current Effi ciency vs Output Current
100 100 100 I VOUT = 1.8V 95 OUT = 100mA 90 90 IOUT = 10mA 90 80 80 85 IOUT = 1mA 70 70 80 IOUT = 900mA 60 60 75 50 50 70 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 65 30 30 IOUT = 0.1mA V 60 20 IN = 2.7V V 20 IN = 3.6V VIN = 3.6V 55 10 VIN = 4.2V 10 VIN = 4.2V VOUT = 1.8V V V OUT = 3.3V IN = 5.5V VIN = 5.5V 50 0 0 2.5 3 3.5 4 4.5 5 5.5 0.1 1 10 100 1000 0.1 1 10 100 1000 INPUT VOLTAGE (V) OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) 3560 G02 3560 G01 3560 G03 3560fb 3
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. VIN = 3.6V unless otherwise specifi ed. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VRUN RUN Threshold l 0.3 1 1.5 V IRUN RUN Leakage Current l ±0.01 ±1 μA VSYNC/MODE SYNC/MODE Threshold l 0.3 1.0 1.5 V ISYNC/MODE SYNC/MODE Leakage Current l ±0.01 ±1 μA tSOFTSTART Soft-Start Time VFB from 10% to 90% Full Scale 0.6 0.9 1.2 ms
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
The LTC3560 is tested in a proprietary test mode that connects VFB may cause permanent damage to the device. Exposure to any Absolute to the output of the error amplifi er. Maximum Rating condition for extended periods may affect device
Note 5:
Dynamic supply current is higher due to the gate charge being reliability and lifetime. delivered at the switching frequency.
Note 2:
The LTC3560E is guaranteed to meet performance specifi cations
Note 6:
Guaranteed by long-term current density limitations. from 0°C to 85°C. Specifi cations over the – 40°C to 85°C operating
Note 7:
This IC includes overtemperature protection that is intended temperature range are assured by design, characterization and correlation to protect the device during momentary overload conditions. Junction with statistical process controls. The LTC3560I is guaranteed to meet temperature will exceed 125°C when overtemperature protection is active. specifi ed performance specifi cations over the full – 40°C to 125°C Continuous operation above the specifi ed maximum operating junction operating temperature range. temperature may impair device reliability.
Note 3:
TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formula: LTC3560: TJ = TA + (PD)(250°C/W)
TYPICAL PERFORMANCE CHARACTERISTICS (From Figure 1a Except for the Resistive Divider Resistor Values) Effi ciency vs Input Voltage Effi ciency vs Output Current Effi ciency vs Output Current
100 100 100 I VOUT = 1.8V 95 OUT = 100mA 90 90 IOUT = 10mA 90 80 80 85 IOUT = 1mA 70 70 80 IOUT = 900mA 60 60 75 50 50 70 40 40 EFFICIENCY (%) EFFICIENCY (%) EFFICIENCY (%) 65 30 30 IOUT = 0.1mA V 60 20 IN = 2.7V V 20 IN = 3.6V VIN = 3.6V 55 10 VIN = 4.2V 10 VIN = 4.2V VOUT = 1.8V V V OUT = 3.3V IN = 5.5V VIN = 5.5V 50 0 0 2.5 3 3.5 4 4.5 5 5.5 0.1 1 10 100 1000 0.1 1 10 100 1000 INPUT VOLTAGE (V) OUTPUT CURRENT (mA) OUTPUT CURRENT (mA) 3560 G02 3560 G01 3560 G03 3560fb 3