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ADP3198 Datasheet(PDF) 3 Page - Analog Devices |
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ADP3198 Datasheet(HTML) 3 Page - Analog Devices |
3 / 32 page ADP3198 Rev. A | Page 3 of 32 SPECIFICATIONS VCC = 5 V, FBRTN = GND, TA = 0°C to 85°C, unless otherwise noted.1 Table 1. Parameter Symbol Conditions Min Typ Max Unit REFERENCE CURRENT Reference Bias Voltage VIREF 1.5 V Reference Bias Current IIREF RIREF = 100 kΩ 14.25 15 15.75 μA ERROR AMPLIFIER Output Voltage Range2 VCOMP 0 4.4 V Accuracy VFB Relative to nominal DAC output, referenced to FBRTN, LLSET = CSREF (see Figure 2) −11 +11 mV VFB(BOOT) In startup 1.089 1.1 1.111 V Load Line Positioning Accuracy CSREF − LLSET = 80 mV −78 −80 −82 mV Differential Nonlinearity −1 +1 LSB Input Bias Current IFB IFB = IIREF 13.5 15 16.5 μA FBRTN Current IFBRTN 65 200 μA Output Current ICOMP FB forced to VOUT – 3% 500 μA Gain Bandwidth Product GBW(ERR) COMP = FB 20 MHz Slew Rate COMP = FB 25 V/μs LLSET Input Voltage Range VLLSET Relative to CSREF −350 +350 mV LLSET Input Bias Current ILLSET −10 +10 nA BOOT Voltage Hold Time tBOOT CDELAY = 10 nF 2 ms VID INPUTS Input Low Voltage VIL(VID) VID(X), VIDSEL 0.4 V Input High Voltage VIH(VID) VID(X), VIDSEL 0.8 V Input Current IIN(VID) −1 μA VID Transition Delay Time VID code change to FB change 400 ns No CPU Detection Turn-Off Delay Time VID code change to PWM going low 5 μs OSCILLATOR Frequency Range fOSC 0.25 4 MHz Frequency Variation fPHASE TA = 25°C, RT = 243 kΩ, 4-phase 156 200 240 kHz TA = 25°C, RT = 113 kΩ, 4-phase 400 kHz TA = 25°C, RT = 51 kΩ, 4-phase 800 kHz Output Voltage VRT RT = 243 kΩ to GND 1.9 2.0 2.1 V RAMPADJ Output Voltage VRAMPADJ RAMPADJ − FB −50 +50 mV RAMPADJ Input Current Range IRAMPADJ 1 50 μA CURRENT SENSE AMPLIFIER Offset Voltage VOS(CSA) CSSUM − CSREF (see Figure 3) −2 +2 mV Input Bias Current IBIAS(CSSUM) −10 +10 nA Gain Bandwidth Product GBW(CSA) CSSUM = CSCOMP 10 MHz Slew Rate CCSCOMP = 10 pF 10 V/μs Input Common-Mode Range CSSUM and CSREF 0 3.5 V Output Voltage Range 0.05 3.5 V Output Current ICSCOMP 500 μA Current Limit Latch-Off Delay Time tOC(DELAY) CDELAY = 10 nF 8 ms IMON Output IMON 10 × (CSREF − CSCOMP) > 50 mV −6 +6 % CURRENT BALANCE AMPLIFIER Common-Mode Range VSW(X)CM −600 +200 mV Input Resistance RSW(X) SW(X) = 0 V 10 17 26 kΩ Input Current ISW(X) SW(X) = 0 V 8 12 20 μA Input Current Matching ∆ISW(X) SW(X) = 0 V −5 +5 % CURRENT LIMIT COMPARATOR ILIMIT Bias Current IILIMIT IILIMIT = 2/3 × IIREF 9 10 11 μA |
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