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CS51022ADBR2G 数据表(PDF) 5 Page - ON Semiconductor |
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CS51022ADBR2G 数据表(HTML) 5 Page - ON Semiconductor |
5 / 11 page CS51021A, CS51022A, CS51023A, CS51024A http://onsemi.com 5 ELECTRICAL CHARACTERISTICS (Unless otherwise stated, specifications apply for −40 °C < TA < 85°C, −40°C < TJ < 150°C, 3.0 V < VC < 20 V, 8.2 V < VCC < 20 V, RT = 12 kW, CT = 390 pF) Characteristic Unit Max Typ Min Test Conditions Current Sense OFFSET Voltage (Note 4) 0.09 0.10 0.11 V Blanking Time − − 55 160 ns Blanking Disable Voltage Adjust VFB 1.8 2.0 2.2 V Second Current Threshold Gain − 1.21 1.33 1.45 V/V ISENSE Input Resistance − − 5.0 − k W Minimum On Time GATE High to Low 30 70 110 ns Gain (Note 4) 0.78 0.80 0.82 V/V OV & UV Voltage Monitors OV Monitor Threshold − 2.4 2.5 2.6 V OV Hysteresis Current − −10 −12.5 −15 mA UV Monitor Threshold − 1.38 1.45 1.52 V UV Monitor Hysteresis − 25 75 100 mV SOFT START (SS) Charge Current SS = 2.0 V −70 −55 −40 mA Discharge Current SS = 2.0 V 250 1000 − mA Charge Voltage, VSS − 4.4 4.7 5.0 V Discharge Voltage, VSS − 0.25 0.27 0.30 V 4. Guaranteed by design, not 100% tested in production. PACKAGE PIN DESCRIPTION PIN # PIN SYMBOL FUNCTION 16 Lead SO Narrow 1 GATE External power switch driver with 1.0 A peak capability. 2 ISENSE Current sense amplifier input. 3 SYNC (CS51021A/3A) Bi−directional synchronization. Locks to the highest frequency. 3 SLEEP (CS51022A/4A) Active high chip disable. In sleep mode, VREF and GATE are turned off. 4 SLOPE Additional slope to the current sense signal. Internal current source charges the external capacitor. 5 UV Undervoltage protection monitor. 6 OV Overvoltage protection monitor. 7 RTCT Timing resistor RT and capacitor CT determine oscillator frequency and maximum duty cycle, DMAX. 8 ISET Voltage at this pin sets pulse−by−pulse overcurrent threshold, and second threshold (1.33 times higher) with Soft Start retrigger (hiccup mode). 9 VFB Feedback voltage input. Connected to the error amplifier inverting input. 10 COMP Error amplifier output. Frequency compensation network is usually connected between COMP and VFB pins. 11 SS Charging external capacitor restricts error amplifier output voltage during the start or fault conditions (hiccup). 12 LGND Logic ground. 13 VREF 5.0 V reference voltage output. 14 VCC Logic supply voltage. 15 PGND Output power stage ground connection. 16 VC Output power stage supply voltage. |
类似零件编号 - CS51022ADBR2G |
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类似说明 - CS51022ADBR2G |
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