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ADP5053ACPZ-R7 数据表(PDF) 6 Page - Analog Devices |
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ADP5053ACPZ-R7 数据表(HTML) 6 Page - Analog Devices |
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6 / 37 page ![]() Data Sheet ADP5053 Rev. B | Page 5 of 36 BUCK REGULATOR SPECIFICATIONS VIN = 12 V, VVREG = 5.1 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 Fixed Output Options VOUT1 0.85 1.60 V Fuse trim 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 RDSON (1H) 100 mΩ Pin-to-pin measurement Current-Limit Threshold ITH (ILIM1) 3.50 4.4 5.28 A RILIM1 = floating 1.91 2.63 3.08 A RILIM1 = 47 kΩ 4.95 6.44 7.48 A RILIM1 = 22 kΩ Minimum On Time tMIN_ON1 117 155 ns fSW = 250 kHz to 1.4 MHz Minimum Off Time tMIN_OFF1 1/9 × tSW ns fSW = 250 kHz to 1.4 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 10 Ω Sinking Resistor tSINKING1 0.95 Ω Error Amplifier (EA), COMP1 Pin EA Transconductance gm1 310 470 620 µS Soft Start Soft Start Time tSS1 2.0 ms SS12 connected to VREG Programmable Soft Start Range 2.0 8.0 ms Hiccup Time tHICCUP1 7 × tSS1 ms COUT Discharge Switch On Resistance RDIS1 250 Ω CHANNEL 2 SYNC BUCK REGULATOR FB2 Pin Fixed Output Options VOUT2 3.3 5.0 V Fuse trim 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 RDSON (2H) 110 mΩ Pin-to-pin measurement Current-Limit Threshold ITH (ILIM2) 3.50 4.4 5.28 A RILIM2 = floating 1.91 2.63 3.08 A RILIM2 = 47 kΩ 4.95 6.44 7.48 A RILIM2 = 22 kΩ Minimum On Time tMIN_ON2 117 155 ns fSW = 250 kHz to 1.4 MHz Minimum Off Time tMIN_OFF2 1/9 × tSW ns fSW = 250 kHz to 1.4 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 10 Ω Sinking Resistor tSINKING2 0.95 Ω |
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