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ADP1864 Datasheet(PDF) 3 Page - Analog Devices |
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ADP1864 Datasheet(HTML) 3 Page - Analog Devices |
3 / 16 page Data Sheet ADP1864 Rev. C | Page 3 of 16 SPECIFICATIONS VIN = 5 V, TJ = 25°C, unless otherwise noted. Table 1. Parameter Symbol Conditions Min Typ Max Unit POWER SUPPLY Input Voltage V IN 3.15 14 V Quiescent Current I Q V IN = 3.15 V to 14 V, PGATE = IN 235 360 μA Shutdown Supply Current I SD V IN = 3.15 V to 14 V, COMP = GND 7 15 μA Undervoltage Lockout Threshold V UVLO V IN falling, TJ = −40°C to +125°C 2.75 2.90 3.01 V V IN rising, TJ = −40°C to +125°C 2.85 3.00 3.15 V ERROR AMPLIFIER FB Input Current I FB V FB = 0.8 V, TJ = 25°C −20 −2 +20 nA V FB = 0.8 V, TJ = −40°C to +125°C −40 −2 +40 nA Amplifier Transconductance V FB = 0.8 V, ICOMP = ±5 μA 0.24 mmho COMP Startup Threshold V IN = 3.15 V to 14 V, TJ = −40°C to +125°C 0.55 0.67 0.80 V COMP Shutdown Threshold V IN = 3.15 V to 14 V, TJ = −40°C to +125°C 0.15 0.3 0.55 V COMP Start-Up Current Source COMP = GND 0.25 0.6 0.95 μA FB Regulation Voltage V IN = 3.15 V to 14 V, TJ = −40°C to +125°C 0.790 0.8 0.810 V Overvoltage Protection Threshold V OVP Measured at FB, T J = −40°C to +125°C 0.87 0.885 0.9 V Overvoltage Protection Hysteresis 50 mV CURRENT SENSE Peak Current Sense Voltage T J = −40°C to +125°C 90 125 mV V IN = 3.15 V to 14 V, TJ = −40°C to +125°C 70 125 mV Current Sense Gain V CS to VCOMP 12 V/V OUTPUT REGULATION Line Regulation1 V IN = 3.15 V to 14 V, VFB/VIN 0.12 mV/V Load Regulation2 V FB/VCOMP −2 mV/V OSCILLATOR Oscillator Frequency V FB = 0.8 V, TJ = −40°C to +125°C 500 580 650 kHz V FB = 0 V 190 kHz FB Frequency Foldback Threshold 0.35 V GATE DRIVE Gate Rise Time C GATE = 3 nF 50 ns Gate Fall Time C GATE = 3 nF 40 ns Minimum On Time PGATE minimum low duration 190 ns SOFT START POWER-ON TIME 1.1 ms 1 Line regulation is measured using the application circuit in Figure 1. Line regulation is specified as the change in the FB voltage resulting from a 1 V change in the IN voltage. 2 Load regulation is measured using the application circuit in Figure 1. Load regulation is specified as the change in the FB voltage resulting from a 1 V change in the COMP voltage. The COMP voltage range is typically 0.9 V to 2.3 V for the minimum to maximum load current condition. |
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