Series Charge Pump Voltage Inverter IC ◆Operating Voltage Range : 1.2V ~ 5.0V ■Applications ◆Highly Efficient ●Cellular and portable phones : 90% ◆Low Power Consumption : 310µA ( 120kHz ) ◆CE ( Chip Enable ) function ●Miniature LCD panels ●Palmtop computers, PDAs ●Various battery powered systems ◆SOT-26 Package ■General Description ■Features The XC6351A series are charge pump voltage inverter ICs that have 4 MOSFETs built in. Since highly efficient negative voltages can be generated with only 2 external capacitors connected, GaAs bias power supplies & OpAmp's negative power supplies etc., can be easily accomodated on a standard PCB. A mini-molded, 6 pin, SOT-26 package provides for space saving and makes high density mounting possible. Low power consumption and high efficiency make this series perfect for use with battery operated applications. Since the IC's operations stop when output is shutdown via the CE (chip Operating Voltage Range : 1.2V ~ 5.0V Oscillator Frequency : 120kHz : 35kHz ( custom ) Low Supply Current : 310 µA ( TYP ) : 100 µA ( TYP ; 35kHz ) : 90% (typ) ( RL = 2k Ω ) High Efficiency Stand-by Current : 2.0 µA (max.) Ultra Small Package : SOT-26 mini mold 8 enable) function, total power consumption reduction is possible in applications which use this IC. ■Typical Application Circuit VIN CIN + C1 + C2 + C+ CE/ C- VOUT GND XC6351A120MR (120kHz) RL VIN=3.0V,C1=C2=1.0 µF(ceramic) CIN=1.0 µF(ceramic) 100 Efficiency:EFFI (%) VDD ■Typical Performance Characteristic 80 60 40 20 0 0 2 4 6 8 10 Output Current:IOUT (mA) 627 XC6351A Series ■Pin Configuration C1- VIN VOUT 6 5 4 1 2 3 GND CE/ C1+ ■Pin Assignment PIN NUMBER SYMBOL FUNCTION １ GND Ground ２ CE/ Chip Enable (Low Active) ３ C1+ External Capacitor +Pin ４ VOUT Reverse Output ５ VIN Power Supply ６ C1- External Capacitor -Pin SOT-26 (TOP VIEW) ■Product Classification ●Ordering Information ＸＣ６３５１Ａ qwert DESCRIPTION SYMBOL qwe r t 120 035 M R L Oscillation frequency 120kHz Oscillation frequency 35kHz (custom) Package SOT-26 Embossed Tape Standard feed Embossed Tape Reverse feed 8 ■Packaging Information ●SOT-26 +0.1 0.15 -0.05 +0.1 0.4 -0.05 （0.5） +0.2 -0.1 0.4 （0.95） 1.9±0.2 2.9±0.2 628 0.2min 1.6 2.8±0.2 0∼0.1 +0.1 -0.05 1.1±0.1 XC6351A Series ■Marking q Represents the product series 1 2 3 DESIGNATOR PRODUCT NAME A XC6351A＊＊＊M＊ 4 w, e Represents the Oscillator frequency SOT-26 (TOP VIEW) DESIGNATOR Oscillator frequency PRODUCT NAME 3 35kHz XC6351A035M＊ 2 120kHz XC6351A120M＊ ② ③ 0 1 r Denotes the production lot number 0 to 9, A to Z repeated(G.I.J.O.Q.W excepted) ■Block Diagram C1+ C1- P1 VIN N2 N3 N4 VOUT Chip Enable CE/ Oscillator 8 Buffer GND Note : 1. In operation, the following conditions will be repeated alternately : P1 & N3 ON : N2 & N4 OFF P1 & N3 OFF : N2 & N4 ON 2. In standby mode, P1, N3 & N4 will be ON and N2 will be OFF. The output pin VOUT will be connected to GND. ■Absolute Maximum Ratings Ta = 25°C, GND = 0V PARAMETER SYMBOL RATINGS UNITS VIN input voltage VIN 6 V VOUT pin voltage VOUT -6 ∼ 0.3 V C1+ pin voltage C1+ -0.3 ∼ VIN + 0.3 V C1- pin voltage C1- VOUT - 0.3 ∼ 0.3 V CE/ pin voltage CE/ -0.3 ∼ VIN + 0.3 V OUT pin current IOUT 50 mA Continuous Total Power Dissipation Pd 150 mW Topr −30 ∼＋80 °C Tstg −40 ∼ ＋125 °C Ambient Operating Temperature Storage Temperature 629 XC6351A Series ■Electrical Characteristics FOSC＝120kHz PARAMETER SYMBOL Ta＝25°C CONDITIONS Supply Current IDD Operating Voltage Range VIN Oscillation Frequency FOSC Power Transition Efficiency EFFI Voltage Transition Efficiency VEFFI RL＝∞ Output Impedence ROUT RL＝5kΩ CE/＝VIN Stand -By Current ISTB CE/ 'H' Level Voltage VCEH CE/ 'L' Level Voltage VCEL MIN MAX 310 520 µA 1 5.0 V 2 192 kHz 1 % 2 1.2 RL＝5kΩ 75 120 90 RL＝2kΩ UNITS CIRCUIT TYP 95 45 % 2 90 Ω 2 2.0 µA 3 V 3 V 3 0.9 0.25 Measuring Conditions : Unless otherwise stated, VIN = 5.0V, CE/ = 0V ■Typical Application Circuit ●Standard Circuit VDD VIN CIN + C1 + C2 + C+ CE/ C- VOUT RL GND 8 Peripherals : CIN = 1µF (ceramic capacitor) C1 = C2 = 1µF (ceramic capacitor)* * With the custom 35kHz frequency, C1 = C2 = 3.3 µF ■Directions for use ●Notes on Use １．Please use the IC & peripherals within the specified electrical characteristic ranges and ensure that absolute maximum ratings are not exceeded. ２．For C1 & C2, please use a capacitor with as small an ESR value as possible. ３．In order to reduce impedance between the IC's input pin and the power supply, we recommend that a capacitor (CIN) be connected to the input side. ４．If an external power supply is applied to the output pin in order to have VOUT connected to GND during standby, large current flows through the IC are a possibility. Further, do not use a capacitor at C2 that has a large capacitance value. 630 XC6351A Series ■Test Circuits Circuit 1 A waveform measurement VIN CIN + VDD C+ CE/ C- VOUT GND Circuit 2 A VDD VIN CIN + C1 + C2 + C+ CE/ C- VOUT RL V A GND 8 Circuit 3 A waveform measurement VIN CIN + VDD C+ CE/ C- VOUT CE/ GND Peripherals : CIN = 1 µF (ceramic capacitor) C1 = C2 = 1 µF (ceramic capacitor)* * With the custom 35kHz frequency, C1 = C2 = 3.3 µF 631 XC6351A Series ■Typical Performance Characteristics (1) OUTPUT VOLTAGE vs. OUTPUT CURRENT XC6351A120MR (120kHz) XC6351A120MR (120kHz) VIN=5.0V,C1=C2=1.0 µF(ceramic) CIN=1.0 µF(ceramic) Output Voltage:VOUT(V) Output Voltage:VOUT(V) -5.0 -4.8 -4.6 -4.4 -4.2 -3.0 -2.8 -2.6 -2.4 2 4 6 8 0 10 Output Current:IOUT (mA) 60 40 20 0 2 4 6 8 100 0 20 40 60 -1.4 0 10 40 20 2 4 6 8 10 80 140 120 100 80 1 2 3 4 Input Voltage:VIN (V) 6 8 10 VIN=2.0V,C1=C2=1.0 µF(ceramic) CIN=1.0 µF(ceramic) 100 80 60 40 20 0 0 2 4 6 8 Output Current:IOUT (mA) C1=C2=1.0 µF(ceramic),Topr=25 (°C) CIN=1.0 µF(ceramic) 160 4 XC6351A120MR (120kHz) 60 0 2 Output Current:IOUT (mA) (4) OSCILLATION FREQUENCY vs. INPUT VOLTAGE XC6351A120MR (120kHz) Frequency:FOSC (kHz) Frequency:FOSC (kHz) 120 -20 8 Output Current:IOUT (mA) 140 -40 6 80 0 VIN=5.0V,C1=C2=1.0 µF(ceramic) CIN=1.0 µF(ceramic) Temp.:Topr （℃） 632 100 10 (3) OSCILLATION FREQUENCY vs. AMBIENT TEMPERATURE XC6351A120MR (120kHz) 80 4 VIN=3.0V,C1=C2=1.0 µF(ceramic) CIN=1.0 µF(ceramic) Output Current:IOUT (mA) 160 2 Efficiency:EFFI (%) 80 0 -1.6 XC6351A120MR (120kHz) VIN=5.0V,C1=C2=1.0 µF(ceramic) CIN=1.0 µF(ceramic) Efficiency:EFFI (%) Efficiency:EFFI (%) 8 -1.8 Output Current:IOUT (mA) (2) EFFICIENCY vs. OUTPUT CURRENT XC6351A120MR (120kHz) 100 -2.0 -1.2 -2.2 0 VIN=2.0V,C1=C2=1.0 µF(ceramic) CIN=1.0 µF(ceramic) -2.2 Output Voltage:VOUT(V) -3.2 -5.2 XC6351A120MR (120kHz) VIN=3.0V,C1=C2=1.0 µF(ceramic) CIN=1.0 µF(ceramic) 5 10