◆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 ■FEATURES The XC6351A series are charge pump voltage inverter ICs Operating Voltage Range : 1.2V ~ 5.0V that have 4 MOSFETs built in. Since highly efficient negative Oscillation Frequency : 120kHz : 35kHz ( custom ) voltages can be generated with only 2 external capacitors connected, GaAs bias power supplies & OpAmp's negative Low Supply Current : 310μA ( TYP. ) : 100μA power supplies etc., can be easily accommodated on a (35kHz custom TYP.) standard PCB. A mini-molded, 6 pin, SOT-26 and USP-6B packages provides High Efficiency : 90% (TYP.) ( RL = 2kΩ) for space saving and makes high density mounting possible. Stand-by Current : 2.0μA (MAX.) Low power consumption and high efficiency make this series Ultra Small Package : SOT-26 ,USP-6B 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. ■TYPICAL APPLICATION CIRCUIT XC6351A ETR0801_001.doc ■TYPICAL PERFORMANCE CHARACTERISTICS 1087 XC6351A Series ■PIN CONFIGURATION GND C1- CE VIN VOUT C1+ *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 SYMBOL FUNCTION 1 6 GND Ground 2 5 CE/ Chip Enable (Low Active) 3 4 C1+ External Capacitor +Pin 4 3 VOUT Reverse Output 5 2 VIN Power Supply 6 1 C1- External Capacitor -Pin ■PRODUCT CLASSIFICATION ●Ordering Information XC6351A ①②③④⑤ DESIGNATOR DESCRIPTION ① ② ③ Oscillation Frequency ④ ⑤ 1088 Package Device Orientation SYMBOL DESCRIPTION 120 : 120kHz 035 : 35kHz (custom) M : SOT-26 D : USP-6B R : Embossed tape, standard feed L : Embossed tape, reverse feed XC6351A Series ■PACKAGING INFORMATION ●SOT-26 ●USP-6B 1089 XC6351A Series ■MARKING RULE ① Represents product series ●SOT-26 6 5 MARK PRODUCT SERIES A XC6351AxxxMx 4 ②,③ Represents oscillation frequency ① ② 1 ③ ④ 2 MARK 3 SOT-26 (TOP VIEW) ② ③ 0 1 3 2 OSCILLATION FREQUENCY PRODUCT SERIES 35kHz 120kHz XC6351A035Mx XC6351A120Mx 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 ●USP-6B MARK 2 ① ② ③ ④ ⑤ ⑥ 1 3 6 5 ① ② ③ 5 1 A PRODUCT SERIES XC6351AxxxDx ④,⑤ Represents oscillation frequency 4 MARK USP-6B (TOP VIEW) ④ ⑤ 0 1 3 2 OSCILLATION FREQUENCY PRODUCT SERIES 35kHz 120kHz 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. ■BLOCK DIAGRAM C1+ C1- P1 V IN N2 N3 N4 Chip Enable CE/ Oscillator V OUT 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 SOT-26 USP-6B Operating Temperature Range Storage Temperature Range Power Dissipation Note: Voltage is all ground standardized. 1090 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 ℃ ℃ XC6351A Series ■ELECTRICAL CHARACTERISTICS FOSC＝120kHz, Ta=25℃ PARAMETER SYMBOL Supply Current IDD Operating Voltage Range VIN Oscillation Frequency FOSC CONDITIONS RL＝5kΩ MIN. TYP. MAX. UNITS CIRCUIT - 310 520 μA 1 1.2 - 5.0 V 2 75 120 192 kHz 1 - 90 - % 2 95 - - % 2 RL＝5kΩ - 45 90 Ω 2 CE/＝VIN - - 2.0 μA 3 - - V 3 - 0.25 V 3 Power Transition Efficiency EFFI RL＝2kΩ Voltage Transition Efficiency VEFFI RL＝∞ Output Impedance ROUT Stand -by Current ISTB CE/ 'H' Level Voltage VCEH 0.9 CE/ 'L' Level Voltage VCEL - 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. Further, do not use a capacitor at C2 that has a large capacitance value. 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