Series PFM Controlled, Step‐Up DC/DC Converters (Duty Ratio 58%) ◆Duty 58% ■Applications ◆CMOS Low Power Consumption ●Cellular phones, pagers ◆Operating Voltage : 0.9V~10.0V ●Palmtops ◆Output Voltage Range : 2.0V~7.0V ●Cameras, video recorders ●Portable equipment ◆Output Voltage Accuracy : ±2.5% 4 ■General Description ■Features The XC6381 series is a group of PFM controlled step-up DC/DC converters. The XC6381 series employs CMOS process and laser trimming technologies so as to attain low power and high accuracy. Max. oscillator frequency is trimmed to 155kHz (accuracy: ±15%). Every built-in switching transistor type enables a step-up circuit to be configured using only three external components ; a coil, a diode, and a capacitor. External transistor versions are available to accommodate high output current applications. Both built-in and external transistor types include 5-pin and 3-pin Operating (start-up) voltage range : 0.9V~10V packages, which are provided with either a CE (chip enable) function that reduces power consumption during shut-down mode, or a V DD pin function (separated power and voltage detect pins). SOT-23, SOT-25, and SOT-89-5 super mini-mold packages. ■Typical Application Circuit 2 L ■Typical Performance Characteristic 1 XC6381A301 L=100μH,C=47μF（Tantalum） SOT-23 (TOP VIEW) CIN 100 3 VOUT SD CL （Tantalum） GND Efficiency:EFFI（％） VIN Output voltage range : 2.0V~7.0V in 0.1V increments Highly accurate : Set-up voltage ±2.5% Maximum oscillator frequency : 155kHz (±15%) Duty Ratio : 58% (±5%) Both built-in switching transistor and external types are available Five-lead packaged units offer either Chip Enable or independent VOUT pin option. Small package : SOT-23, 25 mini-mold (3-pin, 5-pin) SOT-89, 89-5 mini-power mold (3-pin, 5-pin) 80 VIN=2.0V 60 0.9V 1.2V 1.5V 1.8V 40 20 0 0 20 40 60 80 100 Output Current:IOUT（mA） 475 XC6381 Series ■Pin Configuration 5 3 5 1 2 1 3 2 1 SOT-23 (TOP VIEW) 4 4 SOT-25 (TOP VIEW) 2 3 1 SOT-89 (TOP VIEW) 2 3 SOT-89-5 (TOP VIEW) ■Pin Assignment 4 （XC6381A） PIN NUMBER PIN NAME XC6381A FUNCTION SOT-23 SOT-89 1 1 VSS Ground 3 2 VOUT Output voltage monitor, IC internal power supply 2 3 LX Switch PIN NAME FUNCTION （XC6381C） PIN NUMBER XC6381C SOT-25 SOT-89-5 4 5 VSS Ground 2 2 VOUT Output voltage monitor, IC internal power supply 5 4 LX Switch 1 3 CE Chip enable 1 NC No connection 3 （XC6381E） PIN NUMBER PIN NAME FUNCTION 5 VSS Ground 2 VDD IC internal power supply 5 4 LX Switch 1 3 VOUT Output voltage monitor 3 1 NC No connection XC6381E 476 SOT-25 SOT-89-5 4 2 XC6381 Series ■Product Classification ●Selection Guide PART TYPE DUTY RATIO PACKAGE SWITCHING RELATED ADDITIONAL FUNCTION XC6381A 58% SOT-23, SOT-89 Built-in Transistor "Lx" lead – XC6381C 58% SOT-25, SOT-89-5 Built-in Transistor "Lx" lead Chip enable(CE) XC6381E 58% SOT-25, SOT-89-5 Built-in Transistor "Lx" lead FEATURES • Accommodates a duty ratio of 58%. • Stand-by (CE) function added version to the XC6381A. • Stand-by current: 0.5µA max. • Independent power supply and set-up voltage Separated "VDD" and "VOUT" leads sensing leads allow designing of PFM controllers. 4 ●Ordering Information XC6381qwerty XC6381 Series q PFM Controlled Duty 58% A 3-pin. Built-in switching transistor C Stand-by capability. (5-pin) Built-in switching transistor E Separated VDD and VOUT. (5-pin) Built-in switching transistor w e r Output Voltage e.g.VOUT=3.5V ➔ w=3, e=5 1 Maximum Oscillator Frequency M Package q=A~B q=C~F P Package q=A~B q=C~F R Embossed tape : Standard Feed L Embossed tape : Reverse Feed t y 155kHz SOT-23 SOT-25 SOT-89 SOT-89-5 477 XC6381 Series ■Packaging Information ●SOT-23 0.4 +0.1 +0.1 -0.05 0.15 -0.05 +0.2 -0.1 0.2min 1.6 2.8±0.2 0∼0.1 （0.95） 1.1±0.1 1.9±0.2 4 2.9±0.2 ●SOT-25 +0.1 0.15 -0.05 0.4 +0.1 -0.05 +0.2 -0.1 0.2min 1.6 2.8±0.2 0∼0.1 （0.95） 1.9±0.2 2.9±0.2 478 1.1±0.1 XC6381 Series ●SOT-89 1.5±0.1 +0.15 -0.2 0.8 min 4.25max 2.5±0.1 1.6 （0.4） 4.5±0.1 0.42±0.06 0.4 0.42±0.06 +0.03 -0.02 4 0.47±0.06 1.5±0.1 1.5±0.1 ●SOT-89-5 +0.15 1.6 -0.2 0.42±0.06 2.5±0.1 0.8min 4.5max 0.8min 0.42±0.06 （0.4） 0.42±0.06 1.5±0.1 0.42±0.06 0.42±0.06 0.4 +0.03 -0.02 0.47±0.06 1.5±0.1 1.5±0.1 4.5±0.1 479 XC6381 Series ■Marking q w e r qwer w r 2 4 q e 1 3 SOT-25 (TOP VIEW) SOT-23 (TOP VIEW) SOT-89 (TOP VIEW) SOT-89-5 (TOP VIEW) q Represents the Product Classification DESIGNATOR FUNCTION 4 PRODUCT NAME − Built-in Transistor XC6381A＊＊＊＊＊ C CE Built-in Transistor XC6381C＊＊＊＊＊ Y VDD/VIN Built-in Transistor XC6381E＊＊＊＊＊ C w Represents the integer of the Output Voltage and Oscillator Frequency INTEGER OF THE OUTPUT VOLTAGE OSCILLATOR FREQUENCY（kHz） 155 1 2 2 3 4 3 4 5 5 6 6 1 e Represents the decimal number of the Output Voltage and Oscillator Frequency OUTPUT VOLTAGE OSCILLATOR FREQUENCY（kHz） 0 1 1 2 3 2 3 4 5 6 7 4 5 6 7 8 8 9 9 r Denotes the production lot number 0 to 9, A to Z repeated(G.I.J.O.Q.W excepted) 480 155 0 XC6381 Series ■Block Diagram ●XC6381A, XC6381C (VOUT pin can also be used for VDD pin.) VDD Lx VLx limiter Vref VOUT Buffer + PFM Control OSC 155kHz VSS − Chip Enable 4 CE Note: Built-in Tr types use the Lx pin, external Tr types use the EXT pin. The CE pin is only used with the XC6381C. ●XC6381E VDD VDD Lx VLx limiter Vref VOUT Buffer + PFM Control OSC 155kHz VSS − Note: The VDD pin is only used with the XC6381E. Built-in Tr types use the Lx pin, external Tr types use the EXT pin. ■Absolute Maximum Ratings Ta=25°C UNITS PARAMETER SYMBOL RATINGS VOUT Input Voltage VOUT 12 Lx pin Voltage VLX 12 V Lx pin Current ILX 400 mA EXT pin Voltage VEXT VSS–0.3~VOUT+0.3 V EXT pin Current IEXT ±50 mA CE Input Voltage VCE 12 V VDD 12 150 500 V VDD Input Voltage Continuous Total Power Dissipation SOT-23 SOT-89 PD V mW Operating Ambient Temperature Topr –30~+80 °C Storage Temperature Tstg –40~+125 °C 481 XC6381 Series ■Electrical Characteristics XC6381A301 4 VOUT=3.0V Ta=25°C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Output Voltage VOUT L,SD,CL, etc. connected 2.925 3.000 3.075 V 0.80 0.90 Maximum Input Voltage VIN Oscillation Start-up Voltage VST IOUT=1mA Oscillation Hold Voltage VHLD IOUT=1mA V 10 0.70 V V No-Load Input Current IIN IOUT=0mA,(Note1) 4.6 9.3 µA Supply Current 1 (Note 2) IDD1 VIN=VOUT ✕ 0.95 29.3 58.7 µA Supply Current 2 IDD2 VIN=VOUT+0.5V 2.1 4.2 µA Lx Switch On-Resistance RSWON Same as IDD1, VLX=0.4V 5.2 7.9 Ω Lx Leakage Current ILXL No external components, VOUT=VLX=10V 1.0 µA Duty Ratio DTY Same as IDD1 Measuring of Lx waveform 53 58 63 % Maximum Oscillation Frequency MAXFOSC Same as IDD1, 58% duty. 131.75 155 178.25 kHz Lx Limit Voltage VLxLMT Same as IDD1, Fosc ≥MAXFOSC ✕ 2 0.7 1.1 V Efficiency EFFI L,SD,CL, etc. connected 80 % Measuring conditions: Unless otherwise specified, VIN=VOUT ✕ 0.6, IOUT= 30mA. See Typical application circuits, Fig.1. Note: 1. The Schottky diode (SD) must be type MA735, with reverse current (IR) <1.0µA at reverse voltage (VR)=10.0V. 2. "Supply current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically operates, which results in less average power consumption. The current actually provided by an external VIN source is represented by "No-Load Input Current (IIN)". XC6381A501 Ta=25°C VOUT=5.0V PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Output Voltage VOUT L,SD,CL, etc. connected 4.875 5.000 5.125 V Maximum Input Voltage VIN V 10 Oscillation Start-up Voltage VST IOUT=1mA Oscillation Hold Voltage VHLD IOUT=1mA No-Load Input Current IIN Supply Current 1 (Note 2) Supply Current 2 0.80 0.90 V IOUT=0mA,(Note1) 5.3 10.6 µA IDD1 VIN=VOUT ✕ 0.95 47.8 95.7 µA IDD2 VIN=VOUT+0.5V 2.4 4.8 µA Lx Switch On-Resistance RSWON Same as IDD1, VLX=0.4V 2.8 4.3 Ω Lx Leakage Current ILXL No external components, VOUT=VLX=10V 1.0 µA Duty Ratio DTY Same as IDD1 Measuring of Lx waveform 53 58 63 % Maximum Oscillation Frequency MAXFOSC Same as IDD1, 58% duty. 131.75 155 178.25 kHz Lx Limit Voltage VLxLMT Same as IDD1, Fosc≥MAXFOSC ✕ 2 0.7 Efficiency EFFI L,SD,CL, etc. connected 0.70 V 1.1 85 V % Measuring conditions: Unless otherwise specified, VIN=VOUT ✕ 0.6, IOUT=50mA. See Typical application circuits, Fig.1. Note: 1. The Schottky diode (SD) must be type MA735, with reverse current (IR) <1.0µA at reverse voltage (VR)=10.0V. 2. "Supply current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically operates, which results in less average power consumption. The current actually provided by an external VIN source is represented by "No-Load Input Current (IIN)". 482 XC6381 Series XC6381C301MR VOUT=3.0V PARAMETER Output Voltage Maximum Input Voltage Ta=25°C CONDITIONS L,SD,CL etc. connected SYMBOL VOUT VIN VST VHLD IIN IDD1 IDD2 RSWON IOUT=1mA IOUT=1mA IOUT=0mA, (Note1) VIN=VOUT ✕ 0.95 VIN=VOUT+0.5V Same as IDD1. VLX=0.4V Lx Leakage Current ILXL No external components. VOUT=VLX=10V. Duty Ratio DTY Same as IDD1. Measuring of LX waveform. Maximum Oscillation Frequency Stand-by Current MAXFOSC ISTB CE "High" Voltage VCEH CE "Low" Voltage VCEL CE "High" Current CE "Low" Current ICEH Lx Limit Voltage Efficiency VLxLMT Oscillation Start-up Voltage Oscillation Hold Voltage No-Load Input Current Supply Current 1 (Note 2) Supply Current 2 Lx Switch-On Resistance ICEL EFFI Same as IDD1. 58% duty. Same as IDD1. Same as IDD1. Existence of Lx Oscillation. Same as IDD1. Disappearance of Lx Oscillation. Same as IDD1. VCE=VOUT ✕ 0.95. Same as IDD1. VCE=0V. MIN 2.925 10 TYP 3.000 MAX 3.075 0.80 0.90 4.6 29.3 2.1 5.2 9.3 58.7 4.2 7.9 UNITS V V V V µA µA µA Ω 1.0 µA 0.70 53 58 63 % 131.75 155 178.25 0.5 kHz µA 0.75 V 0.7 L,SD,CL etc. connected 0.20 V 0.25 –0.25 µA µA 1.1 V % 80 4 Measuring conditions: Unless otherwise specified, connect CE to VOUT, VIN=VOUT ✕ 0.6, IOUT=30mA. See Typical Application Circuits, Fig.2. Note: 1. The Schottky diode (SD) must be type MA735, with reverse current (IR)<1.0µA at reverse voltage (VR)=10.0V 2. "Supply Current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically operates which results in less average power consumption. The current actually provided by an external VIN source is represented by "No-Load Input Current (IIN)". XC6381C501MR VOUT=5.0V PARAMETER Output Voltage Maximum Input Voltage Ta=25°C Oscillation Start-up Voltage Oscillation Hold Voltage No-Load Input Current Supply Current 1 (Note 2) Supply Current 2 Lx Switch-On Resistance SYMBOL VOUT VIN VST VHLD IIN IDD1 IDD2 RSWON IOUT=1mA IOUT=1mA IOUT=0mA(Note1) VIN=VOUT ✕ 0.95 VIN=VOUT+0.5V Same as IDD1. VLX=0.4V. Lx Leakage Current ILXL No external components. VOUT=VLX=10V. Duty Ratio DTY Same as IDD1. Measuring of LX waveform. Maximum Oscillation Frequency Stand-by Current MAXFOSC ISTB CE "High" Voltage VCEH CE "Low" Voltage VCEL CE "High" Current ICEH CE "Low" Current ICEL Lx Limit Voltage Efficiency VLxLMT EFFI CONDITIONS L,SD,CL etc. connected MIN 4.875 10 TYP 5.000 MAX 5.125 0.80 0.90 5.3 47.8 2.4 2.8 10.6 95.7 4.8 4.3 UNITS V V V V µA µA µA Ω 0.70 1.0 µA 53 58 63 % Same as IDD1. 58% duty. Same as IDD1. Same as IDD1. Existence of Lx Oscillation. Same as IDD1. Disapperance of Lx Oscillation. Same as IDD1. VCE=VOUT ✕ 0.95. Same as IDD1. VCE=0V. 131.75 155 178.25 0.5 kHz µA Same as IDD1. FOSC>MAXFOSC ✕ 2 0.7 L,SD,CL etc. connected 0.75 V 85 0.20 V 0.25 –0.25 µA µA 1.1 V % Measuring conditions: Unless otherwise specified, connect CE to VOUT, VIN=VOUT ✕ 0.6, IOUT=50mA. See Typical Application Circuits, Fig.2. Note: 1. The Schottky diode (SD) must be type MA735, with reverse current (IR)<1.0µA at reverse voltage (VR)=10.0V 2. "Supply Current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically operates which results in less average power consumption. The current actually provided by an external VIN source is represented by "No-Load Input Current (IIN)". 483 XC6381 XC6381E301MR 4 Series VOUT=3.0V Ta=25°C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Output Voltage VOUT L,SD,CL etc. connected 2.925 3.000 3.075 V Maximum Input Voltage VIN V 10 Oscillation Start-up Voltage VST IOUT=1mA. Oscillation Hold Voltage VHLD IOUT=1mA. No-Load Input Current IIN IOUT=0mA(Note1) 4.6 9.3 µA Supply Current 1 (Note 2) IDD1 VIN=VOUT ✕ 0.95 29.3 58.7 µA Supply Current 2 IDD2 VIN=VOUT+0.5V 2.1 4.2 µA Lx Switch-On Resistance RSWON Same as IDD1. VLX=0.4V 5.2 7.9 Ω Lx Leakage Current ILXL No external components. VOUT=VLX=10V 1.0 µA Duty Ratio DTY Same as IDD1 Measuring of LX waveform. 53 58 63 % Maximum Oscillation Frequency MAXFOSC Same as IDD1. 58% duty. 131.75 155 178.25 kHz Lx Limit Voltage VLxLMT Same as IDD1. FOSC>MAXFOSC ✕ 2 0.7 EFFI Efficiency 0.80 0.90 1.1 V % 80 L,SD,CL etc. connected V V 0.70 Measuring conditions: Unless otherwise specified, connect VDD to VOUT, VIN=VOUT ✕ 0.6, IOUT=30mA. See Typical Application Circuits, Fig.3. Note: 1. The Schottky diode (SD) must be type MA735, with reverse current (IR)<1.0µA at reverse voltage (VR)=10.0V. 2. "Supply Current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically operates which results in less average power consumption. The current actually provided by an external VIN source is represented by "No-Load Input Current (IIN)". When the VDD and VOUT pins are independently used, the voltage range at the VDD pin should be 2.2V to 10V. The IC operates from VDD=0.8V. However, output voltage and oscillator frequency are properly stabilized when VDD=2.2V or higher. * XC6381E501MR VOUT=5.0V Ta=25°C PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Output Voltage VOUT L,SD,CL etc. connected 4.875 5.000 5.125 V Maximum Input Voltage VIN Oscillation Start-up Voltage VST 0.80 0.90 V Oscillation Hold Voltage VHLD IOUT=1mA No-Load Input Current IIN IOUT=0mA,(Note1) 5.3 10.6 µA Supply Current 1 (Note 2) IDD1 VIN=VOUT ✕ 0.95 47.8 95.7 µA V 10 IOUT=1mA 0.70 V Supply Current 2 IDD2 VIN=VOUT+0.5V 2.4 48 µA Lx Switch-On Resistance RSWON Same as IDD1. VLX=0.4V. 2.8 4.3 Ω Lx Leakage Current ILXL No external components. VOUT=VLX=10V. 1.0 µA Duty Ratio DTY Same as IDD1. Measuring of LX waveform. 53 58 63 % Maximum Oscillation Frequency MAXFOSC Same as IDD1. 58% duty. 131.75 155 178.25 kHz Lx Limit Voltage VLxLMT Same as IDD1. FOSC>MAXFOSC ✕ 2 0.7 Efficiency EFFI L,SD,CL etc. connected 1.1 85 V % Measuring conditions: Unless otherwise specified, connect VDD to VOUT, VIN=VOUT ✕ 0.6, IOUT=50mA. See Typical Application Circuits, Fig.3. Note: 1. The Schottky diode (SD) must be type MA735, with reverse current (IR)<1.0µA at reverse voltage (VR)=10.0V. 2. "Supply Current 1" is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically operates which results in less average power consumption. The current actually provided by an external VIN source is represented by "No-Load Input Current (IIN)". When the VDD and VOUT pins are independently used, the voltage range at the VDD pin should be 2.2V to 10V. The IC operates from VDD=0.8V. However, output voltage and oscillator frequency are properly stabilized when VDD=2.2V or higher. * 484 XC6381 Series ■Typical Application Circuits 2 L VIN 1 SOT-23 (TOP VIEW) CIN 3 VOUT SD CL （Tantalum） GND L : 100µH (SUMIDA, CR-54) SD : MA2Q735 (Schottky diode; MATSUSHITA) CL : 16V 47µF (Tantalum capacitor, NICHICON, MCE) CIN : 16V 220µF (Aluminium Electrolytic Capacitor) 4 Fig.1 XC6381A Application 5 L VIN 4 SOT-25 (TOP VIEW) CIN 1 3 2 VOUT SD CL （Tantalum） GND CE L : 100µH (SUMIDA, CR-54) SD : MA2Q735 (Schottky diode; MATSUSHITA) CL : 16V 47µF (Tantalum capacitor, NICHICON, MCE) CIN : 16V 220µF (Aluminium Electrolytic Capacitor) Fig.2 XC6381C Application 5 L VIN 4 SOT-25 (TOP VIEW) CIN SD 1 2 3 VOUT CL （Tantalum） VDD GND L : 100µH (SUMIDA, CR-54) SD : MA2Q735 (Schottky diode; MATSUSHITA) CL : 16V 47µF (Tantalum capacitor, NICHICON, MCE) CIN : 16V 220µF (Aluminium Electrolytic Capacitor) Fig.3 XC6381E Application 485 XC6381 Series ■Typical Performance Characteristics (1) OUTPUT VOLTAGE vs. OUTPUT CURRENT (2) EFFICIENCY vs. OUTPUT CURRENT L=100μH,C=47μF（Tantalum） 486 Ripple Voltage:Vr（mVp-p） 1.8V 1.5V 1.2V 1.5 VIN=0.9V 1.0 0.5 0 20 40 60 80 Output Current:IOUT（mA） 4 Efficiency:EFFI（％） Output Voltage:VOUT（V） 2.0V 2.5 100 80 VIN=2.0V 60 0.9V 1.2V 1.5V 1.8V 40 20 0 L=100μH,C=47μF（Tantalum） 100 100 3.0 0.0 XC6381A301 L=100μH,C=47μF（Tantalum） 3.5 2.0 (3) RIPPLE VOLTAGE vs. OUTPUT CURRENT XC6381A301 XC6381A301 0 20 40 60 80 Output Current:IOUT（mA） 100 80 60 VIN=1.8V 1.2V 40 20 1.5V 0 0 20 40 60 80 Output Current:IOUT（mA） 100