☆GO-Compatible ◆CMOS Low Power Consumption ■APPLICATIONS ◆Operating Voltage :0.9V~10.0V ●Cellular phones, Pagers ◆Output Voltage Range :2.0V~7.0V ●Palmtops ◆Output Voltage Accuracy :±2.5% ●Cameras, Video recorders ◆Oscillation Frequency :50kHz, 100kHz, 180kHz(XC6371/72) ●Portable products 30kHz (XC6373) ■GENERAL DESCRIPTION ■FEATURES The XC6371/6372/6373 series are a group of PWM controlled and PWM/PFM controlled step-up DC/DC converters. The built-in 1.4Ω switching transistor type enables a step-up circuit to be configured using only three components, a coil, a diode, and a capacitor. Output voltage can be selectable in the range from 2.0V to 7.0V in increments of 100mV (accuracy: ± 2.5%). Oscillation frequency is also selectable from 50kHz, 100kHz, and 180kHz (accuracy:±15%) for the XC6371 and the XC6372 series. Soft-start time is internally set and offers protection against in-rush currents when the power is switched on and prevents voltage overshoot. 5 pin packages, which are provided with either a CE (chip enable) function that reduces power consumption during shut-down mode, or a VDD pin (separated power and voltage detect pins) are available. The XC6371 series is the standard PWM controlled products. The control of the XC6372 series switches from PWM to PFM control during light loads when automatically switching is selected and the series is highly efficient from light loads to large output currents. Since the XC6373 series is a low noise, it is suitable for a wireless circuit. Also the series is particularly suited for use with pager applications because oscillation frequency is set at 30kHz (±20%) so as to attain the lowest consumption current possible. Operation Start Voltage Range: 0.9V~10V Output Voltage Range : 2.0V~7.0V in 100mV increments Highly Accurate : Setting voltage accuracy±2.5% Oscillation Frequency : 50kHz, 100kHz, 180kHz (±15%) selectable (XC6371/72) 30kHz (XC6373) Maximum Output Currents (Tr. built-in) : 100mA(TYP.) @ VIN=3.0V, VOUT=5.0V * Highly Efficient (Tr. built-in) : 85%(TYP.) @ VIN=3.0V, VOUT=5.0V * Built-in switching transistor type. Five-lead packaged units offer either chip enable or independent VOUT pin option. Phase compensation and soft start-up circuits built-in. Small Packages :SOT-89, SOT-89-5,USP-6B *: Performance depends on external components and PCB layout. ■TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE CHARACTERISTICS XC6371 6372 6373 ETR0402_001.doc 581 XC6371/6372/6373 Series ■PIN CONFIGURATION *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 pin No.1. ■PIN ASSIGNMENT XC6371/72/73A PIN NUMBER SOT-89 USP-6B 1 2 3 － 6 1 4 2, 3, 5 PIN NAME FUNCTION VSS VOUT Lx NC Ground Output Voltage Monitor/IC Internal Power Supply Switch No Connection PIN NAME FUNCTION XC6371/72/73C PIN NUMBER SOT-89-5 USP-6B 5 2 4 3 6 1 4 3 VSS VOUT Lx CE Ground Output Voltage Monitor/IC Internal Power Supply Switch Chip Enable 1 2, 5 NC No Connection PIN NAME FUNCTION XC6371/72/73E PIN NUMBER 582 SOT-89-5 USP-6B 5 2 4 3 6 1 4 3 VSS VDD Lx VOUT Ground IC Internal Power Supply Switch Output Voltage Monitor 1 2, 5 NC No Connection XC6371/6372/6373 Series ■PRODUCT CLASSIFICATION ●Selection Guide START PWM Low Frequency PWM XC6371 XC6373 PWM/PFM Standard XC6371/73A Chip Enable XC6371/73C Separated VDD/VOUT XC6371/73E Standard XC6372A Chip Enable XC6372C Separated VDD/VOUT XC6372E ●Ordering Information XC6371①②③④⑤⑥ : PWM controlled XC6372①②③④⑤⑥ : PWM/PFM switching control XC6371 Series DESIGNATOR DESCRIPTION SYMBOL ① Type of Regulator A C E ② ③ Output Voltage Integer ④ Oscillation Frequency 0 1 2 ⑤ Package ⑥ Device Orientation P DESCRIPTION : 3-pin regulator with built-in switching transistor : Stand-by capability with built-in switching transistor : Separated VDD and VOUT with built-in switching transistor : e.g. VOUT=3.5V→②=3, ③=5 : 50kHz : 100kHz : 180kHz : SOT-89 (XC6371/72 A type) D R : SOT-89-5 (XC6371/72 C/D type) : USP-6B : Embossed tape, standard feed L : Embossed tape, reverse feed XC6373①②③④⑤⑥ : PWM controlled DESIGNATOR DESCRIPTION SYMBOL ① Type of Regulator A C E ② ③ Output Voltage Integer ④ Oscillation Frequency 0 ⑤ Package ⑥ Device Orientation P DESCRIPTION : 3-pin regulator with built-in switching transistor : Stand-by capability with built-in switching transistor : Separated VDD and VOUT with built-in switching transistor : e.g. VOUT=3.5V→②=3, ③=5 : 30kHz : SOT-89 (XC6373 A type) D R : SOT-89-5 (XC6373 C/D type) : USP-6B : Embossed tape, standard feed L : Embossed tape, reverse feed 583 XC6371/6372/6373 Series ■PACKAGING INFORMATION ●SOT-89 ●USP-6B 584 ●SOT-89-5 XC6371/6372/6373 Series ■MARKING RULE [XC6371/72] ●SOT-89, SOT-89-5 ② ④ ① ③ ① Represents product series MARK A A S PRODUCT SERIES XC6371A XC6371C XC6371E 2 SOT-89 (TOP VIEW) PRODUCT SERIES XC6372A XC6372C XC6372E ② Represents integer of output voltage and oscillation frequency OUTPUT VOLTAGE (V) 1 MARK 1 1 3 3 1.x 2.x 3.x 4.x 5.x 6.x 7.x 50kHz B C F E F H K OSCILLATION FREQUENCY 100kHz 180kHz 1 1 2 2 3 3 4 4 5 5 6 6 7 7 ③ Represents decimal number of output voltage and oscillation frequency OUTPUT VOLTAGE (V) SOT-89-5 (TOP VIEW) x.0 x.1 x.2 x.3 x.4 x.5 x.6 x.7 x.8 x.9 50kHz 0 1 2 3 4 5 6 7 8 9 OSCILLATION FREQUENCY 100kHz 180kHz 0 A 1 B 2 C 3 D 4 E 5 F 6 H 7 K 8 L 9 M ④ Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted). 585 XC6371/6372/6373 Series ■MARKING RULE (Continued) [XC6371/72] (Continued) ●USP-6B ① Represents product series MARK 5 PRODUCT SERIES XC6371xxxxDx 2 XC6372xxxxDx ② Represents product classification MARK A USP-6B (TOP VIEW) C PRODUCT SERIES XC6371A XC6371C E XC6371E ③④ Represents output voltage (ex.) MARK OUTPUT VOLTAGE (V) ③ ④ 3 3 3.3 5 0 5.0 ⑤ Represents oscillation frequency MARK 0 OSCILLATION FREQUENCY (kHz) 50 1 100 2 180 ⑥ Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted) Note: No character inversion used. 586 XC6371/6372/6373 Series 〔XC6373〕 ■MARKING RULE (Continued) ●SOT-89,SOT-89-5 ② ④ ① ③ ① Represents product series MARK A A S FUNCTION Built-in Transistor CE Built-in Transistor Separated VDD and VOUT Built-in Transistor ② Represents integer of output voltage and oscillation frequency OUTPUT VOLTAGE (V) 1 2 SOT-89 (TOP VIEW) PRODUCT SERIES XC6372AxxxPx XC6372CxxxPx XC6372ExxxPx 3 1.x 2.x 3.x 4.x 5.x 6.x 7.x OSCILLATION FREQUENCY (PRODUCT SERIES) 30kHz (XC6373xxx0Px) B C F E F H K ③ Represents decimal number of output voltage and oscillation frequency OUTPUT VOLTAGE (V) SOT-89-5 (TOP VIEW) x.0 x.1 x.2 x.3 x.4 x.5 x.6 x.7 x.8 x.9 OSCILLATION FREQUENCY (PRODUCT SERIES) 30kHz (XC6373xxx0Px) 0 1 2 3 4 5 6 7 8 9 ④ Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted). 587 XC6371/6372/6373 Series ■BLOCK DIAGRAMS XC6371/72/73A, C (The VOUT pin serves also as VDD) ( p ) Lx VLx l imi ter Buffer VDD Vref PWM Control OSC 50/100/180KHz VSS Soft Start VOUT Phase comp + － EXT Chip Enable CE Note: The CE pin is only used with the XC6371C. XC6371/72/73E VDD VDD Lx VLx l imi ter Buffer VSS PWM Control OSC 50/100/180KHz Soft Start Vref Phase comp VOUT + － EXT Note: Built-in transistor type units use the Lx pin. ■ABSOLUTE MAXIMUM RATINGS Ta=25℃ 588 PARAMETER VOUT Input Voltage LX pin Voltage LX pin Current CE Input Voltage SOT-89, 89-5 Power Dissipation USP-6B VDD Input Voltage Operating Temperature Range SYMBOL VOUT VLX ILX VCE UNITS V V mA V VDD Topr RATINGS 12 12 400 12 500 100 12 -30~＋80 Storage Temperature Range Tstg -40~＋125 ℃ Pd mW V ℃ XC6371/6372/6373 Series ■ELECTRICAL CHARACTERISTICS VOUT=5.0V, FOSC=100kHZ XC6371/72A501PR PARAMETER SYMBOL CONDITIONS Output Voltage VOUT Maximum Input Voltage VIN Operation Start Voltage VST1 External Components Connected, IOUT=1mA No external components. Apply voltage to VOUT Oscillation Start Voltage VST2 Lx : 10kΩ pull-up to 5V No Load Input Current IIN VIN=VOUT×0.8, IOUT=0mA (*1) Same as VST2, Supply Current 1 IDD1 Apply output voltage×0.95 to VOUT Same as VST2, Supply Current 2 IDD2 Apply output voltage×1.1 to VOUT Lx Switch-On RSWON Same as IDD1, VLX=0.4V Resistance Lx Leak Current ILXL No external components. VOUT=VLX=10V Oscillation Frequency FOSC Same as IDD1. Measuring of Lx waveform Maximum Duty Ratio MAXDTY Same as IDD1. Measuring of Lx waveform PFM Duty Ratio (*4) PFMDTY Same as IDD1. Measuring of Lx waveform Same as IDD1. Apply output voltage to Lx, Lx Limit Voltage VLXLMT Voltage required to produce FOSC×2 Efficiency EFFI Slow-Start Time TSS Ta=25℃ MAX. UNITS 5.125 V V 0.90 V MIN. 4.875 10 - TYP. 5.000 - - - 0.80 V - 12.8 25.7 μA - 80.2 133.8 μA - 8.2 16.5 μA - 1.4 2.4 Ω 85 80 10 100 87 17 1.0 115 92 25 μA kHz % % 0.7 - 1.3 V 4.0 85 10.0 20.0 % mS NOTE: Unless otherwise stated, VIN=VOUT×0.6, IOUT=50mA. See Typical Application Circuits, Circuit1 *1: The Schottky diode (SD) must be type MA735, with reverse current (IR)<1.0μA at reverse voltage (VR)=10.0V.(XC6372A) *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)". *3: When PWM operates at PWM Mode. *4: When PFM operates at PFM Mode.(XC6372A) 589 XC6371/6372/6373 Series ■ELECTRICAL CHARACTERISTICS (Continued) VOUT=5.0V, FOSC=100kHz XC6371/72C501PR PARAMETER Output Voltage Maximum Input Voltage Operation Start Voltage SYMBOL VOUT VIN VST1 Operation Start Voltage VST2 No Load Input Current IIN Supply Current 1 IDD1 Supply Current 2 IDD2 CONDITIONS External Components Connected, IOUT=1mA No external components. Apply voltage to VOUT, Lx : 10kΩ pull-up to 5V VIN=VOUT×0.8, IOUT=0mA (*1) Same as VST2, Apply output voltage×0.95 to VOUT Same as VST2, Apply output voltage×1.1 to VOUT Ta=25℃ MIN. 4.875 10 - TYP. 5.000 - MAX. 5.125 0.90 UNITS V V V - - 0.80 V - 12.8 25.7 μA - 80.2 133.8 μA - 8.2 16.5 μA Lx Switch-On Resistance Lx Leak Current Oscillation Frequency Maximum Duty Ratio PFM Duty Ratio (*4) Stand-by Current CE "High" Voltage CE "Low" Voltage CE "High" Current CE "Low" Current RSWON Same as IDD1, VLx=0.4V - 1.4 2.4 Ω ILXL FOSC MAXDTY PFMDTY ISTB VCEH VCEL ICEH ICEL 85 80 10 0.75 - 100 87 17 - 1.0 115 92 25 0.5 0.20 0.25 -0.25 μA kHZ % % μA V V μA μA Lx Limit Voltage VLxLMT No external components, VOUT =VLX=10V Same as IDD1, Measuring of Lx waveform Same as IDD1, Measuring of Lx waveform Same as IDD1, Measuring of Lx waveform Same as IDD1 Same as IDD1, Lx Oscillation start Same as IDD1, Lx Oscillation stop Same as IDD1, VCE=VOUT×0.95 Same as IDD1, VCE=0V Same as IDD1, Apply output voltage to Lx, Voltage required to produce FOSC×2 0.7 - 1.3 V Efficiency Slow-Start Time EFFI TSS 4.0 85 10.0 20.0 % ms NOTE: Unless otherwise stated, connect CE to VOUT, VIN=VOUT×0.6, IOUT=50mA. See Typical Application Circuits, Circuit 2. *1: The Schottky diode (SD) must be type MA735, with reverse current (IR)<1.0μA at reverse voltage (VR)=10.0V.(XC6372C) *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)". *3: When PWM operates at PWM Mode. *4: When PFM operates at PFM Mode.(XC6372C) 590 XC6371/6372/6373 Series ■ELECTRICAL CHARACTERISTICS (Continued) XC6371/72E501PR PARAMETER Output Voltage Maximum Input Voltage Operation Start Voltage Oscillation Start Voltage No Load Input Voltage Supply Current 1 Supply Current 2 VOUT=5.0V, FOSC=100kHz SYMBOL CONDITIONS VOUT VIN VST1 External Components Connected, IOUT=1mA No external components, VST2 Apply voltage to VOUT, Lx:10kΩpull-up to 5V IIN VIN=VOUT×0.8, IOUT=0mA(*1) Same as VST2, IDD1 Apply output voltage×0.95 to VOUT Same as VST2, IDD2 Apply output voltage×1.1 to VOUT Ta=25℃ MAX. UNITS 5.125 V V 0.90 V MIN. 4.875 10 - TYP. 5.000 - - - 0.80 V - 12.8 25.7 μA - 80.2 133.8 μA - 8.2 16.5 μA Lx Switch-On Resistance Lx Leak Current Oscillation Frequency Maximum Duty Ratio PFM Duty Ratio (*4) RSWON Same as IDD1, VLX=0.4V - 1.4 2.4 Ω ILXL FOSC MAXDTY PFMDTY 85 80 10 100 87 17 1.0 115 92 25 μA kHZ % % Lx Limit Voltage VLxLMT No external components, VOUT =VLX=10V Same as IDD1, Measuring of Lx waveform Same as IDD1, Measuring of Lx waveform Same as IDD1, Measuring of Lx waveform Same as IDD1, Apply output voltage to Lx, Voltage required to produce FOSC×2 0.7 - 1.3 V Efficiency Slow-Start Time EFFI TSS 4.0 85 10.0 20.0 % ms NOTE: Unless otherwise stated, connect VDD to VOUT, VIN=VOUT×0.6, IOUT=50mA. See Typical Application Circuits, Circuit 3. *1: The Schottky diode (SD) must be type MA2Q735, with reverse current (IR)<1.0μA at reverse voltage (VR)=10.0V.(XC6372E) *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 external VIN source is represented by "No Load Input Current (IIN)". *3: When PWM operates at PWM Mode. *4: When PFM operates at PFM Mode.(XC6372E) *5: 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 oscillation frequency are properly stabilized when VDD=2.2V or higher. 591 XC6371/6372/6373 Series ■ELECTRICAL CHARACTERISTICS (Continued) XC6373A300PR VOUT=3.0V, FOSC=30kHz PARAMETER Output Voltage Maximum Input Voltage SYMBOL VOUT VIN Operation Start Voltage VST1 Oscillation Start Voltage VST2 Supply Current 1 IDD1 Supply Current 2 IDD2 Lx Switch-On Resistance RSWON Lx Leak Current ILXL Oscillation Frequency Maximum Duty Ratio Efficiency Slow-Start Time FOSC MAXDTY EFFI TSS CONDITIONS Ta=25℃ MAX. UNITS 3.075 V V MIN. 2.925 10 TYP. 3.000 - - - 0.90 V - - 0.80 V - 13.1 21.9 μA - 3.9 7.9 μA - 3.4 5.7 Ω - - 1.0 μA 24 80 4.0 30 87 77 10.0 36 92 20.0 kHZ % % mS MIN. 3.128 10 - TYP. 3.300 - MAX. 3.383 0.90 UNITS V V V - - 0.80 V - 14.1 23.5 μA - 4.0 8.1 μA - 3.4 5.7 Ω - - 1.0 μA 24 30 36 kHZ 80 87 92 % 4.0 77 10.0 20.0 % mS External Components Connected, IOUT=1mA No external components, Apply voltage to VOUT, LX :10kΩpull-up to 5V Same as VST2. Apply output voltage×0.95 to VOUT Same as VST2, Apply output voltage×1.1 to VOUT Same as IDD1, VLX=0.4V No external components, VOUT =VLX=10V Same as IDD1, Measuring of Lx waveform Same as IDD1, Measuring of Lx waveform NOTE: Unless otherwise stated, VIN=VOUT×0.6, IOUT=15mA. See Typical Application Circuits, Circuit 1. XC6373A330PR VOUT=3.3V, FOSC=30kHz PARAMETER Output Voltage Maximum Input Voltage Operation Start Voltage SYMBOL VOUT VIN VST1 Oscillation Start Voltage VST2 Supply Current 1 IDD1 Supply Current 2 IDD2 Lx Switch-On Resistance RSWON Lx Leak Current ILXL Oscillation Frequency FOSC Maximum Duty Ratio MAXDTY Efficiency Slow-Start Time EFFI TSS Ta=25℃ CONDITIONS External Components Connected, IOUT=1mA No external components, Apply voltage to VOUT, LX :10kΩpull-up to 5V Same as VST2, Apply output voltage×0.95 to VOUT Same as VST2, Apply output voltage×1.1 to VOUT Same as IDD1. VLX=0.4V No external components, VOUT =VLX=10V Same as IDD1, Measuring of Lx waveform Same as IDD1, Measuring of Lx waveform NOTE: Unless otherwise stated, VIN=VOUT×0.6, IOUT=16.5mA. See Typical Application Circuits, Circuit 1. 592 XC6371/6372/6373 Series ■TYPICAL APPRICATION CIRCUITS Circuit 1: XC6372A series LL :: 100μH 100μH (CR54, (CR54,SUMIDA) SUMIDA) SD : MA2Q735 (Schottky Diode; MATUSHITA) CL : 16V47μF (Tantalum Capacitor, NICHICHEMI MCE) Circuit 2: XC6372C series L : 100μH (CR54, SUMIDA) SD : MA2Q735 (Schottky Diode; MATUSHITA) CL : 16V 47μF (Tantalum Capacitor, NICHICHEMI MCE) Circuit 3: XC6372E series L : 100μH (CR54, SUMIDA) SD : MA2Q735 (Schottky Diode; MATUSHITA) CL : 16V 47μF (Tantalum Capacitor; NICHICHEMI MCE) 593 XC6371/6372/6373 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (1) Output Voltage vs. Output Current XC6371A301PR L＝100μH(CR54),CL＝47μF(Tantalum) 5.2 1.2V 5.1 1.5V Output Voltage:VOUT（V） Output Voltage:VOUT（V） XC6371A501PR 2.0V VIN=0.9V 3.0V 5.0 4.0V 4.9 4.8 （Tantalum） L＝100μH（CR54） ， CL＝47μF 3.10 VIN=1.0V 3.05 2.7V 2.95 1 10 100 1000 0.1 VIN=0.9V 2.0V 3.0V 5.0 4.0V 4.9 4.8 0.1 1 10 100 Output Current:IOUT (mA) 1000 1000 XC6373A300PR 3.10 3.05 L=100μH(CＲ54),C L＝100μH(CR54), VIN=0.9V L =47μF(ﾀﾝﾀﾙ) C L＝47μF （Tantalum） 1.2V 3.00 1.5V 1.8V 2.7V 2.95 2.90 0.1 1 10 100 Output Current: IOUT(mA) 1000 Output Voltage:VOUT（V） 1.5V 1.2V 5.1 1 0 100 1000 XC6372A301PR L＝100μH （CＲ54），CL＝47μF （Tantalum） 5.2 1 Output Current:IOUT（mA） XC6372A501PR Output Voltage:VOUT（V） 1.8V 3.00 Output Current:IOUT（mA） Output Voltage: VOUT (V) 1.5V 2.90 0.1 594 1.2V L＝100μH（CＲ54） ， CL＝47μF （Tantalum） 3.10 1.2V 3.05 VIN=0.9V 3.00 1.5V 1.8V 2.7V 2.95 2.90 0.1 1 10 100 Output Current:IOUT (mA) 1000 XC6371/6372/6373 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (2) Efficiency vs. Output Current XC6371A501PR XC6371A301PR L＝100μH(CR54),CL＝47μF(Tantalum) 100 80 2.7V 80 3.0V VIN=0.9V 2.0V 40 1.2V 1.5V 20 0 0.1 1 10 100 1000 1000 Output Current:IOUT（mA） 60 Efficiency:EFFI(%) 60 Efficiency:EFFI(%) L＝100μH(CR54),CL＝47μF(Tantalum) 100 4.0V VIN=0.9V 1.8 V 40 1.2V 1.5V 20 0 0.1 1 10 100 1000 1000 Output Current:IOUT（mA） XC6373A300PR Efficiency: EFFI (%) 100 L＝100μH(CR54), CL＝47μF （Tantalum） 2.7V 80 60 40 1.8V VIN=0.9V 1.2V 1.5V 20 0 0.1 1 10 100 Output Current: IOUT(mA) 1000 595 XC6371/6372/6373 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (3) Ripple Voltage vs. Output Current Ripple Voltage:Vr（mVp-p） XC6371A301PR XC6373A300PR Ripple Voltage: Vr (mVp-p) 100 596 L＝100μH(CR54), CL＝47μF（Tantalum） 80 1.8V 60 40 1.5V 1.2V 2.7V VIN=0.9V 20 0 0.1 10 1 10 100 Output Current: IOUT(mA) 1000 100 L＝100μH(CR54),CL＝47μF(Tantalum) 80 60 1.8V 1.5V 40 20 0 0.1 1.2V 2.7V VIN=0.9V 1 10 100 Output Current:IOUT (mA) 1000 XC6371/6372/6373 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (4) No Load Input Current vs. Input Voltage XC6371A301PR L＝100μH（CＲ54），CL＝47μF （Tantalum） Input Current:IIN (μA) 500 400 300 200 100 0 0 1 2 3 Input Voltage:VIN (V) XC6372A501PR L＝100μH （CＲ54），CL＝47μF （Tantalum） Input Current:IIN (μA) 200 150 100 50 0 0 1 2 3 4 5 Input Voltage:VIN (V) 597 XC6371/6372/6373 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (5) Operation Start Voltage / Hold Voltage vs. Output Current (6) Load Transient Response 598