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ADP5054ACPZ-R7 数据表(PDF) 5 Page - Analog Devices |
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ADP5054ACPZ-R7 数据表(HTML) 5 Page - Analog Devices |
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5 / 31 page  Data Sheet ADP5054 Rev. B | Page 5 of 31 BUCK REGULATOR SPECIFICATIONS VIN = 12 V, VVREG = 5.0 V, fSW = 600 kHz for all channels, TJ = −40°C to +125°C for minimum and maximum specifications, and TA = 25°C for typical specifications, unless otherwise noted. Table 3. Parameter Symbol Min Typ Max Unit Test Conditions/Comments CHANNEL 1 SYNC BUCK REGULATOR FB1 Pin Adjustable Feedback Voltage VFB1 0.800 V Feedback Voltage Accuracy VFB1(DEFAULT) −0.55 +0.55 % TJ = 25°C −1.25 +1.0 % 0°C ≤ TJ ≤ 85°C −1.5 +1.5 % −40°C ≤ TJ ≤ +125°C Feedback Bias Current IFB1 0.1 µA Adjustable voltage SW1 Pin High-Side Power FET On Resistance RDS(ON)_1H 50 mΩ Pin-to-pin measurement Current-Limit Threshold ITH(ILIM1) 5.2 6.9 8.6 A RILIM1 floating 2.6 3.8 5.0 A RILIM1 = 47 kΩ 7.8 10.4 12.4 A RILIM1 = 22 kΩ Minimum On Time tMIN_ON1 115 150 ns fSW = 250 kHz to 2.0 MHz Minimum Off Time tMIN_OFF1 1/9 × tSW ns fSW = 250 kHz to 2.0 MHz Low-Side Driver, DL1 Pin Rising Time tRISING1 20 ns CISS = 1.2 nF Falling Time tFALLING1 3.4 ns CISS = 1.2 nF Sourcing Resistor tSOURCING1 8 Ω Sinking Resistor tSINKING1 1.2 Ω Error Amplifier (EA), COMP1 Pin EA Transconductance gm1 310 465 620 µS Soft Start Soft Start Time tSS1 2.0 ms CFG12 connected to ground Programmable Soft Start Range 2.0 16.0 ms Hiccup Time tHICCUP1 7 × tSS1 ms COUT Discharge Switch On Resistance RDIS1 250 Ω CHANNEL 2 SYNC BUCK REGULATOR FB2 Pin Adjustable Feedback Voltage VFB2 0.800 V Feedback Voltage Accuracy VFB2(DEFAULT) −0.55 +0.55 % TJ = 25°C −1.25 +1.0 % 0°C ≤ TJ ≤ +85°C −1.5 +1.5 % −40°C ≤ TJ ≤ +125°C Feedback Bias Current IFB2 0.1 µA Adjustable voltage SW2 Pin High-Side Power FET On Resistance RDS(ON)_2H 50 mΩ Pin-to-pin measurement Current-Limit Threshold ITH(ILIM2) 5.2 6.9 8.6 A RILIM2 = floating 2.6 3.8 5.0 A RILIM2 = 47 kΩ 7.8 10.4 12.4 A RILIM2 = 22 kΩ Minimum On Time tMIN_ON2 115 150 ns fSW = 250 kHz to 2.0 MHz Minimum Off Time tMIN_OFF2 1/9 × tSW ns fSW = 250 kHz to 2.0 MHz Low-Side Driver, DL2 Pin Rising Time tRISING2 20 ns CISS = 1.2 nF Falling Time tFALLING2 3.4 ns CISS = 1.2 nF Sourcing Resistor tSOURCING2 8 Ω Sinking Resistor tSINKING2 1.2 Ω Error Amplifier (EA), COMP2 Pin EA Transconductance gm2 310 465 620 µS |
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