Datasheet LTC3613 (Analog Devices) - 4
| 制造商 | Analog Devices |
| 描述 | 24V, 15A Monolithic Step Down Regulator with Differential Output Sensing |
| 页数 / 页 | 36 / 4 — The. ELECTRICAL CHARACTERISTICS. denotes the specifications which apply … |
| 文件格式/大小 | PDF / 464 Kb |
| 文件语言 | 英语 |
The. ELECTRICAL CHARACTERISTICS. denotes the specifications which apply over the specified operating
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LTC3613
The ELECTRICAL CHARACTERISTICS
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at T + – A = 25°C. SVIN = 15V, VFB = VOSNS – VOSNS , unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Oscillator and Clock Synchronization
fOSC Free Running Switching Frequency RT = 205k 175 200 225 kHz RT = 80.6k 450 500 550 kHz RT = 38.8k 900 1000 1100 kHz CLKIH Clock Input High Level Into Mode/PLLIN 2 V CLKIL Clock Input Low Level Into Mode/PLLIN 0.5 V
Internal VCC Regulator and External VCC
INTVCC Internal VCC Voltage 6V < VIN < 24V 5.1 5.3 5.55 V INTVCC(%) Internal VCC Load Regulation ICC = 0mA to 50mA –1 –2 % EXTVCC(TH) EXTVCC Switchover Voltage EXTVCC Rising 4.4 4.6 4.75 V EXTVCC(HYS) EXTVCC Switchover Hysteresis 200 mV ΔINTVCC EXTVCC Voltage Drop VEXTVCC = 5V. ICC = 50mA 200 mV
PGOOD Output
PGDOV PGOOD Upper Threshold VFB Rising (With Respect to Regulated 5 7.5 10 % Feedback Voltage VREG) PGDUV PGOOD Lower Threshold VFB Falling (With Respect to Regulated –10 –7.5 –5 % Feedback Voltage VREG) PGDHYS PGOOD Hysteresis VFB Returning 2 % VPGD(LO) PGOOD Low Voltage IPGOOD = 5mA 0.15 0.4 V tPGD(FALL) Delay from OV/UV Fault to PGOOD Falling (Note 5) 20 μs tPGD(RISE) Delay from OV/UV Recovery to PGOOD Rising (Note 5) 10 μs
RDS(ON)
RDS(ON) Top Switch On-Resistance 7.5 mohm Bottom Switch On-Resistance 5.5 mohm
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
The LTC3613 is tested under pulsed load conditions such that cause permanent damage to the device. Exposure to any Absolute TJ ≈ TA. The LTC3613E is guaranteed to meet specifications from Maximum Rating condition for extended periods may affect device 0°C to 125°C junction temperature. Specifications over the –40°C to reliability and lifetime. 125°C operating junction temperature range are assured by design,
Note 2:
T characterization and correlation with statistical process controls. The J is calculated from the ambient temperature, TA, and power dissipation, P LTC3613I is guaranteed over the full –40°C to 125°C operating junction D, as follows: T temperature range. Note that the maximum ambient temperature J = TA + (PD • 29°C/W) (θJA is simulated per JESD51-7 high effective thermal conductivity test board) consistent with these specifications is determined by specific operating conditions in conjunction with board layout, the rated package thermal θJC =1°C/W (θJC is simulated when heat sink is applied at the bottom impedance and other environmental factors. of the package.)
Note 5:
Delay times are measured using 50% levels.
Note 3:
The LTC3613 is tested in a feedback loop that adjusts V + FB = VOSNS – V – OSNS to achieve a specified error amplifier output voltage (ITH). 3613fa 4
The ELECTRICAL CHARACTERISTICS
l
denotes the specifications which apply over the specified operating junction temperature range, otherwise specifications are at T + – A = 25°C. SVIN = 15V, VFB = VOSNS – VOSNS , unless otherwise noted. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Oscillator and Clock Synchronization
fOSC Free Running Switching Frequency RT = 205k 175 200 225 kHz RT = 80.6k 450 500 550 kHz RT = 38.8k 900 1000 1100 kHz CLKIH Clock Input High Level Into Mode/PLLIN 2 V CLKIL Clock Input Low Level Into Mode/PLLIN 0.5 V
Internal VCC Regulator and External VCC
INTVCC Internal VCC Voltage 6V < VIN < 24V 5.1 5.3 5.55 V INTVCC(%) Internal VCC Load Regulation ICC = 0mA to 50mA –1 –2 % EXTVCC(TH) EXTVCC Switchover Voltage EXTVCC Rising 4.4 4.6 4.75 V EXTVCC(HYS) EXTVCC Switchover Hysteresis 200 mV ΔINTVCC EXTVCC Voltage Drop VEXTVCC = 5V. ICC = 50mA 200 mV
PGOOD Output
PGDOV PGOOD Upper Threshold VFB Rising (With Respect to Regulated 5 7.5 10 % Feedback Voltage VREG) PGDUV PGOOD Lower Threshold VFB Falling (With Respect to Regulated –10 –7.5 –5 % Feedback Voltage VREG) PGDHYS PGOOD Hysteresis VFB Returning 2 % VPGD(LO) PGOOD Low Voltage IPGOOD = 5mA 0.15 0.4 V tPGD(FALL) Delay from OV/UV Fault to PGOOD Falling (Note 5) 20 μs tPGD(RISE) Delay from OV/UV Recovery to PGOOD Rising (Note 5) 10 μs
RDS(ON)
RDS(ON) Top Switch On-Resistance 7.5 mohm Bottom Switch On-Resistance 5.5 mohm
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 4:
The LTC3613 is tested under pulsed load conditions such that cause permanent damage to the device. Exposure to any Absolute TJ ≈ TA. The LTC3613E is guaranteed to meet specifications from Maximum Rating condition for extended periods may affect device 0°C to 125°C junction temperature. Specifications over the –40°C to reliability and lifetime. 125°C operating junction temperature range are assured by design,
Note 2:
T characterization and correlation with statistical process controls. The J is calculated from the ambient temperature, TA, and power dissipation, P LTC3613I is guaranteed over the full –40°C to 125°C operating junction D, as follows: T temperature range. Note that the maximum ambient temperature J = TA + (PD • 29°C/W) (θJA is simulated per JESD51-7 high effective thermal conductivity test board) consistent with these specifications is determined by specific operating conditions in conjunction with board layout, the rated package thermal θJC =1°C/W (θJC is simulated when heat sink is applied at the bottom impedance and other environmental factors. of the package.)
Note 5:
Delay times are measured using 50% levels.
Note 3:
The LTC3613 is tested in a feedback loop that adjusts V + FB = VOSNS – V – OSNS to achieve a specified error amplifier output voltage (ITH). 3613fa 4