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NCP81038 Datasheet(PDF) 6 Page - ON Semiconductor |
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NCP81038 Datasheet(HTML) 6 Page - ON Semiconductor |
6 / 11 page NCP81038 http://onsemi.com 6 Table 3. ELECTRICAL CHARACTERISTICS (VIN = 12 V, Vout = 5.0 V, TA = +25°C for typical value; 0°C < TA < 85°C for min/max values unless noted otherwise) Parameter Units Max Typ Min Test Conditions Symbol FEEDBACK VOLTAGE Reference Voltage VREF 792 800 808 mV Feedback Voltage Line Regulation 5V_LDOOUT = 4.5 V ~ 5.5 V 0.25 %/V DIFFERENTIAL CURRENT SENSE AMPLIFIER CSP and CSN Common−mode Input Voltage Range Refer to AGND −0.2 5.5 V Current Sense Input to Output Gain (CSP)−(CSN) = 10 mV 200 mA/V Differential Input Voltage Range −60 60 mV OVER CURRENT PROTECTION OCP Threshold Voltage V(CSP)−V(CSN) @ 25°C 35 40 45 mV V(CSP)−V(CSN) @ 0 ~ 85°C 34 46 mV OCP Trigger Clock Tick After EN, latch off after trigger # clocks 16 Short Circuit OCP Threshold Voltage 60 mV GATE DRIVER GH Pull−High Resistance RH_GH Source, V(BST−GH) = 0.1 2.5 W GH Pull−Low Resistance RL_GH Sink, V(GH−SWN) = 0.1 V 1.5 W GL Pull−High Resistance RH_GL Source, V(VCC−GL) = 0.1 V 2.0 W GL Pull−Low Resistance RL_GL Sink, V(GL−PGND) = 0.1 V 1.0 W Dead Time GL off to GH on 10 20 30 ns GH off to GL on 10 20 30 ns VOLTAGE MONITOR VCC Start Threshold 3.7 4.2 4.4 V VCC UVLO Hysteresis 100 200 300 mV Power Good Threshold PG in from lower 91.5 95 97.5 % PG hysteresis 5.0 % Power Good High Delay After soft start is done 500 ms Power Good Low Delay 1.5 ms Power Good Sink Current PG = 0.4 V 2.5 5.0 mA Output Overvoltage Rising Threshold After VCC POR, with respect to VFB 106 110 118 %Vref Overvoltage Fault Blanking Time 1.5 ms Output Under-Voltage Trip Threshold After soft start, with respect to VFB 45 50 55 %Vref Under-voltage Protection Blanking Time tss ms Under−voltage Protection Delay 2.0 ms PWM Minimum Controllable ON Time 50 ns Minimum OFF Time 100 150 ns PWM Ramp Offset 0.36 0.4 0.44 V PWM Ramp Amplitude VIN = 5 V 1.25 V VIN = 12 V 3.0 V PWM Comparator Propagation Delay 10 mV to 20 mV overdrive 25 30 ns 3. Guaranteed by Design 4. Parameters are for design only, not for product test. |
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