Datasheet LTC3407A-2 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | Dual Synchronous 800mA, 2.25MHz Step-Down DC/DC Regulator |
| Pages / Page | 16 / 3 — ELECTRICAL CHARACTERISTICS The. denotes the specifications which apply … |
| File Format / Size | PDF / 281 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS The. denotes the specifications which apply over the full operating
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LTC3407A-2
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 3.6V, unless otherwise specified. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Voltage Range ● 2.5 5.5 V IFB Feedback Pin Input Current ● 30 nA VFB Feedback Voltage (Note 3) 0°C ≤ TA ≤ 85°C 0.588 0.6 0.612 V –40°C ≤ TA ≤ 125°C (Note 2) ● 0.585 0.6 0.612 V ΔVLINE REG Reference Voltage Line Regulation VIN = 2.5V to 5.5V (Note 3) 0.3 0.5 %/V ΔVLOAD REG Output Voltage Load Regulation MODE/SYNC = 0V (Note 3) 0.5 % IS Input DC Supply Current (Note 4) Active Mode VFB1 = VFB2 = 0.5V 700 950 μA Sleep Mode VFB1 = VFB2 = 0.63V, MODE/SYNC = 3.6V 40 60 μA Shutdown RUN = 0V, VIN = 5.5V, MODE/SYNC = 0V 0.1 1 μA fOSC Oscillator Frequency VFBX = 0.6V ● 1.8 2.25 2.7 MHz fSYNC Synchronization Frequency 2.25 MHz ILIM Peak Switch Current Limit VIN = 3V, VFBX = 0.5V, Duty Cycle <35% 1 1.2 1.6 A RDS(ON) Top Switch On-Resistance (Note 6) 0.35 0.45 Ω Bottom Switch On-Resistance (Note 6) 0.30 0.45 Ω ISW(LKG) Switch Leakage Current VIN = 5V, VRUN = 0V, VFBX = 0V 0.01 1 μA POR Power-On Reset Threshold VFBX Ramping Up, MODE/SYNC = 0V 8.5 % VFBX Ramping Down, MODE/SYNC = 0V –8.5 % Power-On Reset On-Resistance 100 200 Ω Power-On Reset Delay 65,536 Cycles VRUN RUN/SS Threshold Low ● 0.3 1 1.5 V RUN/SS Threshold High ● 2 V IRUN RUN/SS Leakage Current ● 0.01 1 μA VMODE MODE Threshold Low 0 0.5 V MODE Threshold High VIN – 0.5 VIN V
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
The LTC3407A-2 is tested in a proprietary test mode that connects may cause permanent damage to the device. Exposure to any Absolute VFB to the output of the error amplifier. Maximum Rating condition for extended periods may affect device
Note 4:
Dynamic supply current is higher due to the internal gate charge reliability and lifetime. being delivered at the switching frequency.
Note 2:
The LTC3407AE-2 is guaranteed to meet specified performance
Note 5:
TJ is calculated from the ambient TA and power dissipation PD from 0°C to 85°C. Specifications over the – 40°C and 85°C operating according to the following formula: T temperature range are assured by design, characterization and correlation J = TA + (PD • θJA). with statistical process controls. The LTC3407AI-2 is guaranteed over the
Note 6:
The DFN switch on-resistance is guaranteed by correlation to full –40°C to 125°C operating temperature range. wafer level measurements. 3407a2f 3
ELECTRICAL CHARACTERISTICS The
●
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25
°
C. VIN = 3.6V, unless otherwise specified. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Operating Voltage Range ● 2.5 5.5 V IFB Feedback Pin Input Current ● 30 nA VFB Feedback Voltage (Note 3) 0°C ≤ TA ≤ 85°C 0.588 0.6 0.612 V –40°C ≤ TA ≤ 125°C (Note 2) ● 0.585 0.6 0.612 V ΔVLINE REG Reference Voltage Line Regulation VIN = 2.5V to 5.5V (Note 3) 0.3 0.5 %/V ΔVLOAD REG Output Voltage Load Regulation MODE/SYNC = 0V (Note 3) 0.5 % IS Input DC Supply Current (Note 4) Active Mode VFB1 = VFB2 = 0.5V 700 950 μA Sleep Mode VFB1 = VFB2 = 0.63V, MODE/SYNC = 3.6V 40 60 μA Shutdown RUN = 0V, VIN = 5.5V, MODE/SYNC = 0V 0.1 1 μA fOSC Oscillator Frequency VFBX = 0.6V ● 1.8 2.25 2.7 MHz fSYNC Synchronization Frequency 2.25 MHz ILIM Peak Switch Current Limit VIN = 3V, VFBX = 0.5V, Duty Cycle <35% 1 1.2 1.6 A RDS(ON) Top Switch On-Resistance (Note 6) 0.35 0.45 Ω Bottom Switch On-Resistance (Note 6) 0.30 0.45 Ω ISW(LKG) Switch Leakage Current VIN = 5V, VRUN = 0V, VFBX = 0V 0.01 1 μA POR Power-On Reset Threshold VFBX Ramping Up, MODE/SYNC = 0V 8.5 % VFBX Ramping Down, MODE/SYNC = 0V –8.5 % Power-On Reset On-Resistance 100 200 Ω Power-On Reset Delay 65,536 Cycles VRUN RUN/SS Threshold Low ● 0.3 1 1.5 V RUN/SS Threshold High ● 2 V IRUN RUN/SS Leakage Current ● 0.01 1 μA VMODE MODE Threshold Low 0 0.5 V MODE Threshold High VIN – 0.5 VIN V
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 3:
The LTC3407A-2 is tested in a proprietary test mode that connects may cause permanent damage to the device. Exposure to any Absolute VFB to the output of the error amplifier. Maximum Rating condition for extended periods may affect device
Note 4:
Dynamic supply current is higher due to the internal gate charge reliability and lifetime. being delivered at the switching frequency.
Note 2:
The LTC3407AE-2 is guaranteed to meet specified performance
Note 5:
TJ is calculated from the ambient TA and power dissipation PD from 0°C to 85°C. Specifications over the – 40°C and 85°C operating according to the following formula: T temperature range are assured by design, characterization and correlation J = TA + (PD • θJA). with statistical process controls. The LTC3407AI-2 is guaranteed over the
Note 6:
The DFN switch on-resistance is guaranteed by correlation to full –40°C to 125°C operating temperature range. wafer level measurements. 3407a2f 3
