Datasheet LTC3779 (Analog Devices) - 5
| Hersteller | Analog Devices |
| Beschreibung | 150V VIN and VOUT Synchronous 4-Switch Buck-Boost Controller |
| Seiten / Seite | 38 / 5 — ELECTRICAL CHARACTERISTICS Note 1:. Note 3:. Note 2:. Note 4:. Note 5:. … |
| Revision | A |
| Dateiformat / Größe | PDF / 2.6 Mb |
| Dokumentensprache | Englisch |
ELECTRICAL CHARACTERISTICS Note 1:. Note 3:. Note 2:. Note 4:. Note 5:. Note 6:. Note 7:. Note 8:. Note 9:
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Textversion des Dokuments
link to page 19 link to page 27 LTC3779
ELECTRICAL CHARACTERISTICS Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
This IC includes over temperature protection that is intended to may cause permanent damage to the device. Exposure to any Absolute protect the device during momentary overload conditions. The maximum Maximum Rating condition for extended periods may affect device rated junction temperature will be exceeded when this protection is active. reliability and lifetime. Continuous operation above the specified absolute maximum operating
Note 2:
The LTC3779 is tested under pulsed load conditions such that T junction temperature may impair device reliability or permanently damage J ≈ T the device. A. The LTC3779E is guaranteed to meet performance specifications from 0°C to 85°C junction temperature. Specifications over the –40°C
Note 4:
When biased from an auxiliary supply through the EXTVCC pin, the to 125°C operating junction temperature range are assured by design, LTC3779 can operate from a VIN voltage lower than 4.5V. Otherwise the characterization and correlation with statistical process controls. The minimum VIN operational voltage is 4.5V after startup. LTC3779I is guaranteed over the full –40°C to 125°C operating junction
Note 5:
The LTC3779 is tested in a feedback loop that servos VITH to a temperature range. The LTC3779H is guaranteed over the full –40°C to specified voltage and measures the resultant VFB. 150°C operating junction temperature range. High junction temperature
Note 6:
Dynamic supply current is higher due to the gate charge being degrades operating lifetimes; operating lifetime is derated for junction delivered at the switching frequency. See Applications Information. temperatures greater than 125°C. Note that the maximum ambient temperature consistent with these specifications is determined by
Note 7:
Rise and fall times are measured using 10% and 90% levels. specific operating conditions in conjunction with board layout, the rated Delay times are measured using 50% levels. package thermal impedance and other environmental factors. The junction
Note 8:
Do not apply a voltage or current source to these pins. They must temperature T be connected to capacitive loads only, otherwise permanent damage may J is calculated from the ambient temperature TA and power dissipation P occur. These pins are rated for an absolute maximum voltage of –0.3V to D according to the formula: T 11V. J = TA + (PD • θJA), where θJA = 28°C/W for the TSSOP package.
Note 9:
Do not apply a voltage or current source to the NDRV pin, other than tying NDRV to DRVCC when not used. If used it must be connected to capacitive loads only (see DRVCC Regulator in the Applications Information section), otherwise permanent damage may occur. Rev A For more information www.analog.com 5 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS
ELECTRICAL CHARACTERISTICS Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
This IC includes over temperature protection that is intended to may cause permanent damage to the device. Exposure to any Absolute protect the device during momentary overload conditions. The maximum Maximum Rating condition for extended periods may affect device rated junction temperature will be exceeded when this protection is active. reliability and lifetime. Continuous operation above the specified absolute maximum operating
Note 2:
The LTC3779 is tested under pulsed load conditions such that T junction temperature may impair device reliability or permanently damage J ≈ T the device. A. The LTC3779E is guaranteed to meet performance specifications from 0°C to 85°C junction temperature. Specifications over the –40°C
Note 4:
When biased from an auxiliary supply through the EXTVCC pin, the to 125°C operating junction temperature range are assured by design, LTC3779 can operate from a VIN voltage lower than 4.5V. Otherwise the characterization and correlation with statistical process controls. The minimum VIN operational voltage is 4.5V after startup. LTC3779I is guaranteed over the full –40°C to 125°C operating junction
Note 5:
The LTC3779 is tested in a feedback loop that servos VITH to a temperature range. The LTC3779H is guaranteed over the full –40°C to specified voltage and measures the resultant VFB. 150°C operating junction temperature range. High junction temperature
Note 6:
Dynamic supply current is higher due to the gate charge being degrades operating lifetimes; operating lifetime is derated for junction delivered at the switching frequency. See Applications Information. temperatures greater than 125°C. Note that the maximum ambient temperature consistent with these specifications is determined by
Note 7:
Rise and fall times are measured using 10% and 90% levels. specific operating conditions in conjunction with board layout, the rated Delay times are measured using 50% levels. package thermal impedance and other environmental factors. The junction
Note 8:
Do not apply a voltage or current source to these pins. They must temperature T be connected to capacitive loads only, otherwise permanent damage may J is calculated from the ambient temperature TA and power dissipation P occur. These pins are rated for an absolute maximum voltage of –0.3V to D according to the formula: T 11V. J = TA + (PD • θJA), where θJA = 28°C/W for the TSSOP package.
Note 9:
Do not apply a voltage or current source to the NDRV pin, other than tying NDRV to DRVCC when not used. If used it must be connected to capacitive loads only (see DRVCC Regulator in the Applications Information section), otherwise permanent damage may occur. Rev A For more information www.analog.com 5 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS