XC6351A

◆Operating Voltage Range : 1.2V ~ 5.0V : 90% ◆Highly Efficient ◆Low Power Consumption : 310μA(120kHz) ◆CE(Chip Enable) Function ◆SOT-26 and USP-6B Packages ■APPLICATIONS ●Cellular and portable phones ●Miniature LCD panels ●Palmtop computers, PDAs ●Various battery powered systems ■ GENERAL DESCRIPTION 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 accommodated on a standard PCB. A mini-molded, 6 pin, SOT-26 and USP-6B packages 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 enable) function, total power consumption reduction is possible in applications which use this IC. ■FEATURES Operating Voltage Range Oscillation Frequency Low Supply Current : 1.2V ~ 5.0V : 120kHz : 35kHz ( custom ) : 310μA ( TYP. ) : 100μA (35kHz custom TYP.) High Efficiency Stand-by Current Ultra Small Package : 90% (TYP.) ( RL = 2kΩ) : 2.0μA (MAX.) : SOT-26 ,USP-6B ■TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE CHARACTERISTICS XC6351A ETR0801_001.doc 1087 XC6351A Series ■PIN CONFIGURATION GND CE C1+ C1VIN VOUT *The dissipation pad for the USP-6B package should be solder-plated in recommended mount pattern and metal masking so as to enhance mounting strength and heat release. If the pad needs to be connected to other pins, it should be connected to the VIN pin. ■PIN ASSIGNMENT PIN NUMBER SOT-26 USP-6B 1 2 3 4 5 6 6 5 4 3 2 1 SYMBOL GND CE/ C1+ VOUT VIN C1FUNCTION Ground Chip Enable (Low Active) External Capacitor +Pin Reverse Output Power Supply External Capacitor -Pin ■PRODUCT CLASSIFICATION ●Ordering Information XC6351A ①②③④⑤ DESIGNATOR ①②③ DESCRIPTION Oscillation Frequency SYMBOL 120 035 M D R L : 120kHz : 35kHz (custom) : SOT-26 : USP-6B : Embossed tape, standard feed : Embossed tape, reverse feed DESCRIPTION ④ Package ⑤ Device Orientation 1088 XC6351A Series ■PACKAGING INFORMATION ●SOT-26 ●USP-6B 1089 XC6351A Series ■MARKING RULE ●SOT-26 6 ① ② ① Represents product series MARK PRODUCT SERIES XC6351AxxxMx A ②,③ Represents oscillation frequency 5 4 ③④ MARK ② ③ 3 2 0 1 OSCILLATION FREQUENCY 35kHz 120kHz PRODUCT SERIES XC6351A035Mx XC6351A120Mx 1 2 3 SOT-26 (TOP VIEW) ④ Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted) ①,②,③ Represents product series MARK ① 5 ② 1 ③ A PRODUCT SERIES XC6351AxxxDx ●USP-6B 1 2 3 6 5 4 USP-6B (TOP VIEW) ■BLOCK DIAGRAM C1+ C1V IN P1 N2 ④⑤⑥ Chip Enable ①②③ ④,⑤ Represents oscillation frequency MARK ④ 0 1 ⑤ 3 2 OSCILLATION FREQUENCY 35kHz 120kHz PRODUCT SERIES XC6351A035Dx XC6351A120Dx ⑥ Represents production lot number 0 to 9,A to Z repeated (G, I, J, O, Q, W excepted) Note: No character inversion used. N3 CE/ N4 V OUT Oscillator Buffer 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. GND ■ABSOLUTE MAXIMUM RATINGS PARAMETER VIN Input Voltage VOUT Pin Voltage C1+ Pin Voltage C1- Pin Voltage CE/ Pin Voltage IOUT Pin Current Power Dissipation SOT-26 USP-6B Operating Temperature Range Storage Temperature Range SYMBOL VIN VOUT C1+ C1CE/ IOUT Pd Topr Tstg RATINGS 6.0 -6～0.3 -0.3～VIN + 0.3 VOUT - 0.3～0.3 -0.3～VIN + 0.3 50 150 100 -30～＋80 -40～＋125 Ta = 25℃ UNITS V V V V V mA mW ℃ ℃ Note: Voltage is all ground standardized. 1090 XC6351A Series ■ELECTRICAL CHARACTERISTICS FOSC＝120kHz, Ta=25℃ PARAMETER Supply Current Operating Voltage Range Oscillation Frequency Power Transition Efficiency Voltage Transition Efficiency Output Impedance Stand -by Current CE/ 'H' Level Voltage CE/ 'L' Level Voltage SYMBOL IDD VIN FOSC EFFI VEFFI ROUT ISTB VCEH VCEL RL＝2kΩ RL＝∞ RL＝5kΩ CE/＝VIN RL＝5kΩ CONDITIONS MIN. 1.2 75 95 0.9 TYP. 310 120 90 45 MAX. 520 5.0 192 90 2.0 0.25 UNITS μA V kHz % % Ω μA V V CIRCUIT 1 2 1 2 2 2 3 3 3 Measuring Conditions: Unless otherwise stated, VIN = 5.0V, CE/ = 0V ■ TYPICAL APPLICATION CIRCUIT ●Standard Circuit External components: CIN = 1μF (ceramic capacitor) C1 = C2 = 1μF (ceramic capacitor)* * With the custom 35kHz frequency, C1 = C2 = 3.3 μF ■ NOTES ON USE 1. Please use the IC & external components: within the specified electrical characteristics range 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. capacitance value. Further, do not use a capacitor at C2 that has a large 1091 XC6351A Series ■TEST CIRCUITS External components: CIN = 1μF (ceramic capacitor) C1 = C2 = 1μF (ceramic capacitor)* * With the custom 35kHz frequency, C1 = C2 = 3.3μF 1092 XC6351A Series ■TYPICAL PERFORMANCE CHARACTERISTICS (1) Output Voltage vs. Output Current (2) Efficiency vs. Output Current (3) Oscillation Frequency vs. Ambient Temperature (4) Oscillation Frequency vs. Input Voltage 1093