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ADP2140 Datasheet(PDF) 3 Page - Analog Devices |
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ADP2140 Datasheet(HTML) 3 Page - Analog Devices |
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3 / 32 page  Data Sheet ADP2140 Rev. B | Page 3 of 32 SPECIFICATIONS VIN1 = 3.6 V, VIN2 = VOUT2 + 0.3 V or 1.65 V, whichever is greater; 5 V EN1 = EN2 = VIN1; IOUT = 200 mA, IOUT2 = 10 mA, CIN = 10 μF, COUT = 10 µF, COUT2 = 1 µF, LOUT = 1 μH; TJ = −40°C to +125°C for minimum/maximum specifications, and TA = 25°C for typical specifications, unless otherwise noted. Table 1. Parameter Symbol Test Conditions/Comments Min Typ Max Unit BUCK SECTION Input Voltage Range VIN1 2.3 5.5 V Buck Output Accuracy VOUT IOUT = 10 mA −1.5 +1.5 % VIN1 = 2.3 V or (VOUT + 0.5 V) to 5.5 V, IOUT = 1 mA to 600 mA −2.5 +2.5 % Transient Load Regulation VTR-LOAD VOUT = 1.8 V Load = 50 mA to 250 mA, rise/fall time = 200 ns 75 mV Load = 200 mA to 600 mA, rise/fall time = 200 ns 75 mV Transient Line Regulation VTR-LINE Line transient = 4 V to 5 V, 4 μs rise time VOUT = 1.0 V 40 mV VOUT = 1.8 V 25 mV VOUT = 3.3 V 25 mV PWM To PSM Threshold VIN1 = 2.3 V or (VOUT + 0.5 V) to 5.5 V 100 mA Output Current IOUT 600 mA Current Limit ILIM VIN1 = 2.3 V or (VOUT + 0.5 V) to 5.5 V 1100 1300 mA Switch On Resistance PFET RPFET VIN1 = 2.3 V to 5.5 V 250 mΩ NFET RNFET VIN1 = 2.3 V to 5.5 V 250 mΩ Switch Leakage Current ILEAK-SW EN1 = GND, VIN1 = 5.5 V, and SW = 0 V −1 μA Quiescent Current IQ No load, device not switching 20 30 μA Minimum On Time ON-TIMEMIN 70 ns Oscillator Frequency FREQ 2.55 3.0 3.15 MHz Frequency Foldback Threshold VFOLD Output voltage where fSW ≤ 50% of nominal frequency 50 % Start-Up Time1 tSTART-UP VOUT = 1.8 V, 600 mA load 70 µs Soft Start Time2 SSTIME VOUT = 1.8 V, 600 mA load 150 μs LDO SECTION Input Voltage Range VIN2 1.65 5.5 V LDO Output Accuracy VOUT2 IOUT2 = 10 mA, TJ = 25°C −1 +1 % 1 mA < IOUT2 < 300 mA, VIN2 = (VOUT2 + 0.3 V) to 5.5 V, TJ = 25°C −1.5 +1.5 % 1 mA < IOUT2 < 300 mA, VIN2 = (VOUT2 + 0.3 V) to 5.5 V −3 +3 % Line Regulation ∆VOUT2/∆VIN2 VIN2 = (VOUT2 + 0.3 V) to 5.5 V, IOUT2 = 10 mA −0.05 +0.05 %/V Load Regulation3 ∆VOUT2/∆IOUT2 IOUT2 = 1 mA to 300 mA 0.001 0.005 %/mA Dropout Voltage4 VDROPOUT IOUT2 = 10 mA, VOUT2 = 1.8 V 4 7 mV IOUT2 = 300 mA, VOUT2 = 1.8 V 110 200 mV Ground Current IAGND No load, buck disabled 22 35 μA IOUT2 = 10 mA 65 90 μA IOUT2 = 300 mA 150 220 μA Power Supply Rejection Ratio PSRR VIN2 = VOUT2 + 1 V, VIN1 = 5 V, IOUT2 = 10 mA PSRR on VIN2 10 kHz, VOUT2 = 1.2 V, 1.8 V, 3.3 V 65 dB 100 kHz, VOUT2 = 3.3 V 53 dB 100 kHz, VOUT2 = 1.8 V 54 dB 100 kHz, VOUT2 = 1.2 V 55 dB |
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