Datasheet LTC3602 (Analog Devices) - 3
| Hersteller | Analog Devices |
| Beschreibung | 2.5A, 10V, Monolithic Synchronous Step-Down Regulator |
| Seiten / Seite | 20 / 3 — ELECTRICAL CHARACTERISTICS. The. denotes the specifi cations which apply … |
| Dateiformat / Größe | PDF / 230 Kb |
| Dokumentensprache | Englisch |
ELECTRICAL CHARACTERISTICS. The. denotes the specifi cations which apply over the full operating
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LTC3602
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 = 8.4V unless otherwise specifi ed. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ΔVPGOOD Power Good Range ±10 ±12 % RPGOOD Power Good Resistance 11 18 Ω IFB FB Input Bias Current 10 nA gm Transconductance Amplifi er gm 1.7 ms IS Supply Current (Note 4) Active Mode 500 700 μA Sleep Mode 75 100 μA Shutdown 0.2 1 μA INTVCC VCC LDO Output Voltage 4.8 5 5.2 V tON, MIN Minimum Controllable ON-Time 90 ns VRUN RUN Pin ON Threshold VRUN Rising l 0.4 0.7 1 V ITRACK/SS TRACK/SS Pull-Up Current 1.25 μA fOSC Oscillator Frequency RT = 105k 0.8 1 1.2 MHz fSYNC SYNC Capture Range 0.3 3 MHz RDS(ON) Top Switch On-Resistance 90 mΩ Bottom Switch On-Resistance 67 mΩ ILIM Peak Current Limit 3.8 4.5 5.2 A ILSW Switch Leakage Current 0.1 1 μA VUVLO INTVCC Undervoltage Lockout INTVCC Ramping Up 4.1 4.2 4.3 V VUVLO, HYS INTVCC Undervoltage Lockout Hysteresis 700 mV
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
Dynamic supply current is higher due to the internal gate charge may cause permanent damage to the device. Exposure to any Absolute being delivered at the switching frequency. Maximum Rating condition for extended periods may affect device
Note 5:
TJ is calculated from the ambient temperature TA and the power reliability and lifetime. dissipation as follows: TJ = TA + (PD)(θJA C/W).
Note 2:
The LTC3602E is guaranteed to meet performance specifi cations
Note 6:
This IC includes overtemperature protection that is intended from 0°C to 85°C. Specifi cations over the –40°C to 85°C operating to protect the device during momentary overload conditions. Junction temperature range are assured by design, characterization and correlation temperature will exceed 125°C when overtemperature protection is active. with statistical process controls. Continuous operation above the specifi ed maximum operating junction
Note 3:
The LTC3602 is tested in a feedback loop that adjusts VFB to temperature may impair device reliability. achieve a specifi ed error amplifi er output voltage (ITH).
Note 7:
This limit indicates the current density limitations of the internal metallization and it is not tested in production.
TYPICAL PERFORMANCE CHARACTERISTICS Burst Mode Operation Load Step Transient Forced Continuous
VIN = 7V VIN = 7V VOUT = 3.3V VOUT = 3.3V LOAD = 50mA OUTPUT OUTPUT VOLTAGE VOLTAGE 50mV/DIV 100mV/DIV INDUCTOR LOAD CURRENT CURRENT 500mA/DIV 1A/DIV 3602 G01 3602 G02 10μs/DIV 10μs/DIV 3602fb 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 = 8.4V unless otherwise specifi ed. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ΔVPGOOD Power Good Range ±10 ±12 % RPGOOD Power Good Resistance 11 18 Ω IFB FB Input Bias Current 10 nA gm Transconductance Amplifi er gm 1.7 ms IS Supply Current (Note 4) Active Mode 500 700 μA Sleep Mode 75 100 μA Shutdown 0.2 1 μA INTVCC VCC LDO Output Voltage 4.8 5 5.2 V tON, MIN Minimum Controllable ON-Time 90 ns VRUN RUN Pin ON Threshold VRUN Rising l 0.4 0.7 1 V ITRACK/SS TRACK/SS Pull-Up Current 1.25 μA fOSC Oscillator Frequency RT = 105k 0.8 1 1.2 MHz fSYNC SYNC Capture Range 0.3 3 MHz RDS(ON) Top Switch On-Resistance 90 mΩ Bottom Switch On-Resistance 67 mΩ ILIM Peak Current Limit 3.8 4.5 5.2 A ILSW Switch Leakage Current 0.1 1 μA VUVLO INTVCC Undervoltage Lockout INTVCC Ramping Up 4.1 4.2 4.3 V VUVLO, HYS INTVCC Undervoltage Lockout Hysteresis 700 mV
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
Dynamic supply current is higher due to the internal gate charge may cause permanent damage to the device. Exposure to any Absolute being delivered at the switching frequency. Maximum Rating condition for extended periods may affect device
Note 5:
TJ is calculated from the ambient temperature TA and the power reliability and lifetime. dissipation as follows: TJ = TA + (PD)(θJA C/W).
Note 2:
The LTC3602E is guaranteed to meet performance specifi cations
Note 6:
This IC includes overtemperature protection that is intended from 0°C to 85°C. Specifi cations over the –40°C to 85°C operating to protect the device during momentary overload conditions. Junction temperature range are assured by design, characterization and correlation temperature will exceed 125°C when overtemperature protection is active. with statistical process controls. Continuous operation above the specifi ed maximum operating junction
Note 3:
The LTC3602 is tested in a feedback loop that adjusts VFB to temperature may impair device reliability. achieve a specifi ed error amplifi er output voltage (ITH).
Note 7:
This limit indicates the current density limitations of the internal metallization and it is not tested in production.
TYPICAL PERFORMANCE CHARACTERISTICS Burst Mode Operation Load Step Transient Forced Continuous
VIN = 7V VIN = 7V VOUT = 3.3V VOUT = 3.3V LOAD = 50mA OUTPUT OUTPUT VOLTAGE VOLTAGE 50mV/DIV 100mV/DIV INDUCTOR LOAD CURRENT CURRENT 500mA/DIV 1A/DIV 3602 G01 3602 G02 10μs/DIV 10μs/DIV 3602fb 3