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| KB3511 |
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 KINGBOR
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3 page 
3 The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. VIN = 3.6V unless otherwise specified. KB3511 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052 ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The KB3511 is guaranteed to meet specified performance from 0 °C to 70°C. Specifications over the –40°C and 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: The KB3511 is tested in a proprietary test mode that connects VFB to the output of the error amplifier. Note 4: Dynamic supply current is higher due to the internal gate charge being delivered at the switching frequency. Note 5: TJ is calculated from the ambient TA and power dissipation PD according to the following formula: TJ = TA + (PD • θJA). Note 6: The DFN switch on-resistance is guaranteed by correlation to wafer level measurements. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS POR Power-On Reset Threshold VFB Ramping Up, MODE/SYNC = 0V 8.5 % VFB Ramping Down, MODE/SYNC = 0V –8.5 % Power-On Reset On-Resistance 100 200 Ω Power-On Reset Delay 262,144 Cycles VRUN RUN Threshold High ● 0.3 1 1.5 V IRUN RUN Leakage Current ● 0.01 1 µA 1.70 1.65 1.60 1.55 1.50 1.45 1.40 1.35 1.30 1.8 1.7 1.6 1.5 1.4 1.3 1.2 SUPPLY VOLTAGE (V) 2 3 45 6 INPUT VOLTAGE (V) 2 3 45 6 TEMPERATURE ( °C) –50 25 75 –25 0 50 100 125 100 95 90 85 80 75 70 65 60 VIN = 3.6V VOUT = 1.8V ILOAD = 50mA CIRCUIT OF FIGURE 1 VIN = 3.6V VOUT = 1.8V ILOAD = 50mA CIRCUIT OF FIGURE 1 VIN = 3.6V VOUT = 1.8V ILOAD = 50mA TO 600mA CIRCUIT OF FIGURE 1 VOUT = 1.8V CIRCUIT OF FIGURE 1 600mA 10mA 100mA 1mA SW 5V/DIV VOUT 100mV/DIV IL 200mA/DIV SW 5V/DIV VOUT 10mV/DIV IL 200mA/DIV VOUT 200mV/DIV IL 500mA/DIV ILOAD 500mA/DIV 4 µs/DIV 1 µs/DIV 20 µs/DIV TA = 25°C TA = 25°C Load Step Trickle Mode Operation PWM Mode Efficiency vs Input Voltage Oscillator Frequency vs Supply Voltage Oscillator Frequency vs Temperature |
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