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XC9120B091ER Datasheet(PDF) 4 Page - Torex Semiconductor |
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XC9120B091ER Datasheet(HTML) 4 Page - Torex Semiconductor |
4 / 17 page 4/17 XC9120/XC9121/XC9122 Series PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNIT CIRCUIT FB Voltage VFB 0.882 0.900 0.918 V ④ Supply Voltage Range (*1) VDD 1.8 - 6.0 V ① Output Voltage Setting Range VOUTSET Recommended circuit using 2SD1628, VIN=VOUTSET×0.6, VDD=3.0V, IOUT=1.0mA 1.5 - 30.0 V ② Operation Start Voltage VST1 Recommended circuit using 2SD1628 VOUT=3.3V, IOUT=1.0mA - - 0.9 V ③ Oscillation Start Voltage (*1) VST2 No external components, CE connected to VDD, Voltage applied, FB=0V - - 0.8 V ④ Operation Hold Voltage VHLD Recommended circuit using 2SD1628 VOUT=3.3V, IOUT=1.0mA - - 0.7 V ③ Supply Voltage 1 IDD1 Same as VST2, VDD=3.0V - 25 50 μA ④ Supply Voltage 2 IDD2 Same as IDD1, FB=1.2V - 13 30 μA ④ Stand-by Current ISTB Same as IDD1, CE=0V - - 1.0 μA ⑤ Oscillation Frequency FOSC Same as IDD1 85 100 115 kHz ④ Maximum Duty Ratio MAXDTY Same as IDD1 89 93 96 % ④ PFM Duty Ratio PFMDTY No Load (XC9121B/D, XC9122B/D types) 24 32 40 % ⑥ Over Current Sense Voltage (*2) VLMT Step input to FB (Pulse width: 2.0μs or more) EXT= Low level voltage (XC9120/9122/9122B type) 150 250 400 mV ⑥ Efficiency (*3) EFFI IOUT=10mA - 85 - % ① Soft-Start Time TSS 5.0 10.0 20.0 ms ① CE "H" Voltage VCEH Same as IDD1 0.65 - - V ⑤ CE "L" Voltage VCEL Same as IDD1 - - 0.20 V ⑤ EXT "H" ON Resistance REXTH Same as IDD1, VEXT=VOUT-0.4V - 24 36 Ω ④ EXT "L" ON Resistance REXTL Same as IDD1, VEXT=0.4V - 16 24 Ω ④ PWM ‘H’ Voltage (*4) VPWMH IOUT=1mA (XC9122B/D type) VDD-0.2 - - V ① PWM ‘L’ Voltage (*4) VPWML IOUT=1mA (XC9122B/D type) - - VDD-1.0 V ① CE "H" Current ICEH Same as IDD2, CE=VDD - - 0.1 μA ⑤ CE "L" Current ICEL Same as IDD2, CE=0V - - -0.1 μA ⑤ FB "H" Current IFBH Same as IDD2, FB=VDD - - 0.1 μA ⑤ FB "L" Current IFBL Same as IDD2, FB=0V - - -0.1 μA ⑤ Test Conditions: Unless otherwise stated, CL: ceramic, recommended MOSFET should be connected. When VOUT is set at 15V, VIN=VDD=3.6V. NOTE: *1: Although the IC starts step-up operations from a VDD=0.8V, the output voltage and oscillation frequency are stabilized at VDD>1.8V. Therefore, a VDD of more than 1.8V is recommended when VDD is supplied from VIN or other power sources. *2: The overcurrent limit circuit of this IC is designed to monitor the ripple voltage so please select your external components carefully to prevent VLMT being reached under low temperature conditions as well as normal operating conditions. Following current limiter circuit operation, which in turn causes the IC’s operations to stop, the IC resumes its operation with a toggle of the CE pin or by turning the power supply back on. *3: EFFI: {(output voltage) x (output current)} / {(input voltage) x (input current)} x 100 *4: The XC9122 series’ CE pin combines PWM/PFM external switch pin. In the operation state, PWM control becomes effective when the CE pin is more than VDD-0.2V. When the CE pin is less than VDD-1.0V and more than VCEH, PWM/PFM automatic switching control becomes effective with 32% duty. ■ELECTRICAL CHARACTERISTICS (FOSC=100kHz) Ta=25℃ XC9120B091, XC9121B091, XC9122B091 XC9120D091, XC9121D091, XC9122D091 |
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