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XC9504 Datasheet(PDF) 1 Page - Torex Semiconductor |
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XC9504 Datasheet(HTML) 1 Page - Torex Semiconductor |
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1 / 50 page  Mar. 20, 2003 Ver 3 Applications 2ch DC/DC Controller (Step-up + Inverting) Power Supplies for LCD Input Voltage Range 0.9V ~ 10.0V PDAs Output Voltage Externally Set-Up Palm Top Computers Oscillation Frequency 180kHz (±15%) Portable Audio Systems Max Duty Ratio 80% (TYP) Various Multi-function Power Supplies PWM, PWM/PFM Switching Control MSOP-10 Package Features 2ch. DC/DC Controllers Output 1: Step-up DC/DC Controller Output 2: Inverting DC/DC Controller Power Supply Voltage Range 2.0V ~ 10V Output Voltage Range General Description Output 1: 1.5V ~ 30.0V (Step-up DC/DC Controller) Output 2: -30V ~ 0V (Inverting DC/DC Controller) Oscillation Frequency 180kHz ±15% 300kHz & 500kHz are available as custom Output Current Output 1 : Output 2 : Soft-Start Internally Set-Up (Output 1) Stand-By Current 3.0 µA (MAX) Typical Perfomance Characteristics Typical Application ( XC9504B092A Input: 3.3V, Output 1: 15V, Output 2: -7V ) more than 20mA (VIN=3.3V,VOUT=15V) more than - 20mA (VIN=3.3V,VOUT=- 7V) The XC9504 series are PWM control, PWM/PFM switching, 2 channel (step-up and inverting) DC/DC controller ICs. With 0.9V of standard voltage supply internal, and using externally connected components, the output 1 voltage (step-up DC/DC controller) can be set freely within a range of 1.5V ~ 30V. Since output 2 (inverting DC/DC controller) has a built-in 0.9V reference voltage (accuracy ±2), a negative voltage can be set with the external components. With a 180kHz frequency, the size of the external components can be reduced. Switching frequencies of 300kHz and 500kHz are also available as custom-designed products. The control of the XC9504 series can be switched between PWM control and PWM/PFM automatic switching control using external signals. Control switches from PWM to PFM during light loads when automatic switching is selected and the series is highly efficient from light loads through to large output currents. Noise is easily reduced with PWM control since the frequency is fixed. The series gives freedom of control selection so that control suited to the application can be selected. Soft-start time is internally set to 10msec (output 1) which offers protection against rush currents and voltage overshoot when the power is switched on . XC9504 Series 2ch. Step-up / Inverting DC/DC Controller ICs Can be set freely with 0.9V(± 2.0%) of reference voltage supply & external components Can be set freely with 0.9V(± 2.0%) of reference voltage & external components L1:22uH D412F Tr2:Pch MOSFET XP152A12C0 CIN=47uF Tr1:Nch MOSFET XP151A12A2 L2:22uH D412F VPW M1 VPW M2 1 EXT1 2 VDD 3 FB1 FB2 8 GND 9 EXT2/ 10 4 PW M1 PWM2 7 5 EN1 EN2 6 VEN2 VEN1 CDD=1uF SD2 :MA2Q735 RFB11 :470k Ω RFB12 :30k Ω CFB1 :5pF VOUT1=15V IOUT1=~20mA SD1 :MA2Q735 CL1 10uF RFB21 24k Ω CFB21 =0.1uF VOUT2=7V IOUT2=~20mA CL2 :10uF RFB22 :43k Ω VIN=3.3V 14.4 14.6 14.8 15.0 15.2 15.4 0 10 203040 5060 Output Current 1,2 IOUT1,2(mA) -7.8 -7.7 -7.6 -7.5 -7.4 -7.3 VOUT2 VOUT1 XC9504B092A (180kHz, Output 1 = 15V, Output 2 = - 7.5V) L1=22 µH (CDRH4D18C), CL1=- 10µF (ceramic), SD1: CRS02, Tr1:XP151A12A2M L2=22 µH (CDRH4D18C), CL2= 10µF (ceramic), SD1: CRS02, Tr2:XP152A12C0M 1 |
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