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CS5323 Datasheet(PDF) 5 Page - ON Semiconductor |
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CS5323 Datasheet(HTML) 5 Page - ON Semiconductor |
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5 / 16 page  CS5323 http://onsemi.com 5 ELECTRICAL CHARACTERISTICS (continued) (0°C < TA < 70°C; 0°C < TJ < 85°C; 4.7 V < VCC < 14 V; CGATE = 100 pF, RR(OSC) = 53.6 k, CCOMP = 0.1 μF, CREF = 0.1μF, DAC Code 10000, CVCC = 0.1 μF, ILIM ≥ 1.0 V; unless otherwise specified.) Characteristic Test Conditions Min Typ Max Unit Voltage Feedback Error Amplifier VFB Bias Current (Note 2) 0.9 V < VFB < 1.9 V 17.6 19.0 20.6 μA COMP Source Current COMP = 0.5 V to 2.0 V; VFB = 1.8 V; DAC = 00000 15 30 60 μA COMP Sink Current COMP = 0.5 V to 2.0 V; VFB = 1.9 V; DAC = 00000 15 30 60 μA COMP Discharge Threshold Voltage − 0.20 0.27 0.34 V Transconductance −10 μA < ICOMP < +10 μA − 32 − mmho Output Impedance − − 2.5 − MΩ Open Loop DC Gain Note 3 60 90 − dB Unity Gain Bandwidth 0.01 μF − 400 − kHz PSRR @ 1 kHz − − 70 − dB COMP Max Voltage VFB = 1.8 V; COMP Open; DAC = 00000 2.4 2.7 − V COMP Min Voltage VFB = 1.9 V; COMP Open; DAC = 00000 − 0.1 0.2 V Hiccup Latch Discharge Current − 2.0 5.0 10 μA COMP Discharge Ratio − 4.0 6.0 10 − PWM Comparators Minimum Pulse Width Measured from CSx to GATE(H) with 60 mV step between CSx and CSREF − 350 500 ns Channel Start Up Offset V(CS1) = V(CS2) = V(CS3) = V(VFB) V(CSREF) = 0 V; Measure V(COMP) when GATE (H) 1, 2 switch high 0.3 0.4 0.5 V GATEs High Voltage Measure VCC − GATEx, IGATEx = 1.0 mA − 1.2 2.1 V Low Voltage Measure GATEx, IGATEx = 1.0 mA − 0.25 0.50 V Rise Time GATE 1.0 V < GATE < 8.0 V; VCC = 10 V − 30 60 ns Fall Time GATE 8.0 V > GATE > 1.0 V; VCC = 10 V − 30 60 ns Oscillator Switching Frequency ROSC = 53.6 k 220 250 280 kHz Switching Frequency Note 3 ROSC = 32.4 k 300 400 500 kHz Switching Frequency Note 3 ROSC = 16.2 k 600 800 1000 kHz ROSC Voltage − − 1.00 − V Phase Delay Rising edge only 105 120 135 deg Adaptive Voltage Positioning VDRP Offset CS1 = CS2 = CS3 = CSREF, VFB = COMP Measure VDRP − COMP −20 − 20 mV Maximum VDRP Voltage |(CS1 = CS2 = CS3) − CREF| = 50 mV, VFB = COMP, Measure VDRP − COMP 360 465 570 mV Current Share Amp to VDRP Gain − 2.7 3.0 3.5 V/V 2. The VFB Bias Current changes with the value of ROSC per Figure 4. 3. Guaranteed by design. Not tested in production. |
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