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| 1.General Description 4. Pin Function Description 2. Features VDET Open Drain Input Open Drain Output Input Input VIN LX 3. Applications ETR CE VOUT RDERING INFORMATION 1 of 4 2005/10/18 5. Electrical Characteristics Test Conditions Min. ---------------2.925 ------------------------------Iout=1mA Iout=30mA Vhold Iout=1mA 0.7 Iout=30mA 0.9 Iin Without loading Supply Current IDD1 VIN=VOUT x 0.95 Measured at VOUT pin without external component Supply Current IDD2 VIN=VOUT+0.5V Measured at VOUT pin without external component Shutdown Current VCE=0 , VIN=VOUTx0.95 LX Leakage VIN=6V Current Maximum VIN=VOUT0.95 Oscillator Measured at ETR pin Frequency Oscillator Duty VIN=VOUT_0.95 70 Cycle Measured at ETR pin Parameter Output Voltage Output Ripple Vin Vstart Typ. 3 2.5 0.75 1 Max. 3.075 3 6 0.8 1.2 Unit V % V V V V V uA uA 20 45 25 52 8 12 uA 0.5 1 200 75 230 80 uA uA kHz % Low Battery VIN: HI to LOW 2.1 2.2 2.3 V Detect Voltage (LBDV) LBDV hysteresis -----------------0.1 V Width 85 % Efficiency L , SD , CL etc. connected +3.0V Output Type VIN=VOUTx0.6 ; IOUT=30mA ; Ta=25 (Unless otherwise specified) Note: " Supply current 1 " is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically operates. The current actually provided by an external VIN source from VOUT pin. " Supply current 2 " is the supply current while the oscillator stop oscillating. In actual operation the oscillator periodically operates. The current actually provided by an external VIN source from VOUT pin 2 of 4 2005/10/18 6.Application Circuit EXTERNAL COMPONENT : CP=22uF ; CIN=100uF ; CL=100uF ; Cb=0.1uF L=100uH ; RPU=47K External Transistor application ------using (1A) 3 of 4 2005/10/18 7.TYPICAL PERFOMACE OF EFFICIENCY 8. OUTPUT VOLTAGE V.S LOADING 4 of 4 2005/10/18 |
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