☆GO-Compatible ◆Input Voltage Range : 2.2~10.0V ◆Output Voltage Range : 1.5~6.0V (±2.5%) ◆Oscillator Frequency : 300kHz (±15%) ◆Maximum Duty Ratio : 100% ◆High Efficiency : 92% ◆PWM/PFM Switching Control (XC6366) ◆SOT-25 Package ■APPLICATIONS ■GENERAL DESCRIPTION ■FEATURES The XC6365/66 series are multi-functional step-down DC/DC converters with built-in high speed, low ON resistance drivers. An output current of more than 1A is possible using an externally connected transistor, coil, diode and capacitor. Output voltage is programmable in 100mV increments between 1.5V to 6.0V (VOUT) (±2.5% accuracy). Further, with 1.0V of standard voltage supply internal and using externally connected components, output voltage can be set up freely (FB). With a 300kHz switching frequency, the size of the external components can be reduced. Control switches from PWM to PFM during light loads with the XC6366 (PWM/PFM switchable) and the series is highly efficient from light loads to large output currents. In relation to soft-start time, both internally set-up 10msec types (A, B) and external resistor or capacitor regulated types (C, D) are available. During stand-by time (CE pin "Low" ), current consumption is reduced to less than 0.5μA. With U.V.L.O. internal, the external transistor will be forcibly switched off if used below the stipulated voltage. Input Voltage Range : 2.2V ~ 10V (VOUT type) ■TYPICAL APPLICATION CIRCUIT XC6365 6366 ETR0501_001.doc ●Electronic information organizers ●Palmtops ●Cellular and portable phones ●Portable audio systems ●Various multi-function power supplies Output Voltage Range : 1.5V ~ 6.0V programmable in 100mV increments (±2.5%) Oscillation Frequency : 300kHz (±15%) : Custom products for 180, 500kHz Output Current : More than 1.0A (VIN=5.0V, VOUT=3.0V) High Efficiency : 92% (TYP.) Stand-by Capability : ISTB=0.5μA (MAX.) Soft-start time set-up externally type possible Internally set-up output voltage type possible (VOUT) Externally set-up output voltage type possible (FB) Package : SOT-25 ■TYPICAL PERFORMANCE CHARACTERISTICS 703 XC6365/6366 Series ■PIN CONFIGURATION ■PIN ASSIGNMENT PIN NUMBER PIN NAME FUNCTION 1 2 3 EXT/ VDD GND 4 CE 5 VOUT (FB) External Transistor Connection Power Supply Ground Chip Enable Soft-Start Capacitor Connection with Soft-Start Externally Set-Up Types (C, D) Output Voltage Monitor FB with Externally Set-Up Types (B, D) ■PRODUCT CLASSIFICATION ●Selection Guide 704 XC6365/6366 Series ■PRODUCT CLASSIFICATION (Continued) ●Ordering Information XC6365①②③④⑤⑥ XC6366①②③④⑤⑥ DESIGNATOR ① ② ③ ④ PWM control PWM/PFM switching control DESCRIPTION Type of DC/DC Converter Output Voltage Oscillation Frequency ⑤ Package ⑥ Device Orientation SYMBOL DESCRIPTION A : VOUT type: Internally set-up, soft-start internally set-up B : FB type: Externally set-up, soft-start internally set-up C : VOUT type: Internally set-up, soft-start externally set-up D : FB type: Externally set-up, soft-start internally set-up 15～60 : VOUT type: 3.0V output → ②=3, ③=0 10 : FB type: 10 fixed → ②=1, ③=0 fixed 3 : 300kHz 5 : 500kHz (custom) 2 : 180kHz (custom) M : SOT-25 (SOT-23-5) R : Embossed tape, standard feed L : Embossed tape, reverse feed ■PACKAGING INFORMATION ●SOT-25 705 XC6365/6366 Series ■MARKING RULE ①Represents product classification 5 ① 1 4 ② ③ ④ 2 3 SOT-25 (TOP VIEW) MARK PRODUCT SERIES MARK PRODUCT SERIES A B C D XC6365A XC6365B XC6365C XC6365D K L M N XC6366A XC6366B XC6366C XC6366D ②Represents integer of output voltage and oscillation frequency OUTPUT VOLTAGE 1.x 2.x 3.x 4.x 5.x 6.x 100 B C D E F H OSCILLATION FREQUENCY (kHz) 180 300 1 2 3 4 5 6 1 2 3 4 5 6 500 B C D E F H ③Represents decimal number of output voltage and oscillation frequency OUTPUT VOLTAGE 100 OSCILLATION FREQUENCY (kHz) 180 300 0 1 2 3 4 5 0 1 2 3 4 5 A B C D E F A B C D E F x.6 x.7 x.8 x.9 6 7 8 9 6 7 8 9 H K L M H K L M ④Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted) 706 500 x.0 x.1 x.2 x.3 x.4 x.5 XC6365/6366 Series ■BLOCK DIAGRAMS XC6365, XC6366 Series A, C type (VOUT) XC6365, XC6366 Series B, D type (FB) 707 XC6365/6366 Series ■ABSOLUTE MAXIMUM RATINGS Ta = 25℃ PARAMETER VIN Pin Voltage VOUT Pin Voltage FB Pin Voltage CE Pin Voltage EXT/ Pin Voltage EXT/ Pin Current Power Dissipation Operating Temperature Range Storage Temperature Range SYMBOL VDD VOUT VFB VCE VEXT/ RATINGS -0.3 ~ +12 -0.3 ~ VIN +0.3 -0.3 ~ VIN +0.3 -0.3 ~ VIN +0.3 -0.3 ~ VIN +0.3 ±100 150 -30 ~ +80 -40 ~ +125 IEXT/ Pd Topr Tstg UNITS V V V V V mA mW ℃ ℃ Note: Voltage is all ground standardized. ■ELECTRICAL CHARACTERISTICS XC6365A333MR, XC6366A333MR PARAMETER SYMBOL Output Voltage VOUT Maximum Input Voltage VIN U.V.L.O. Voltage VUVLO (Minimum Operating Voltage) Supply Current 1 IDD1 Supply Current 2 IDD2 Stand-by Current ISTB Oscillation Frequency FOSC Maximum Duty Ratio PFM Duty Ratio MAXDTY PFMDTY CE "High" Voltage VCEH CE "Low" Voltage VCEL EXT "High" ON Resistance EXT "Low" ON Resistance REXTBH REXTBL Efficiency EFFI Soft-Start Time TSS (VOUT=3.3V, Same as IDD1, Voltage which EXT/pin voltage holding “H” level No external components, CE=VDD, VOUT=0V No external components, XC6365 CE=VOUT=VDD XC6366 No external components, CE=VOUT=0V Measuring of EXT/ waveform, VIN=output voltage + 0.1V No load (XC6366 only) No external components, VOUT=0V, Voltage which EXT/pin voltage holding “L” level No external components, VOUT=0V, Voltage which EXT/pin voltage holding “H” level Same as IDD2, VEXT/=VDD-0.4V Same as IDD1, VEXT/=0.4V Use of a XP162A12A6 transistor recommended Connect RSS, CSS, CE, 0V→ 3.0V (When VIN≦3.0V, VIN=3.0V) Conditions: 1. Unless otherwise stated, connect external components. VIN=VDD = 5.0V, IOUT = 220mA 2. XC6365/66C series external components: CSS=0.033μF, RSS=470kΩ 708 Ta=25℃ FOSC=300kHz) CONDITIONS MIN. 3.218 10.0 TYP. 3.300 - MAX. UNITS 3.383 V V 0.9 - 2.2 V - 57 57 15 - 102 102 27 0.5 μA μA μA μA 255 300 345 kHz 100 15 25 35 % % 0.65 - - V - - 0.20 V - 16 14 22 19 μA μA - 92 - % 5 10 20 msec XC6365/6366 Series ■ELECTRICAL CHARACTERISTICS (Continued) XC6365A503MR, XC6366A503MR PARAMETER SYMBOL Output Voltage VOUT Maximum Input Voltage VIN U.V.L.O. Voltage VUVLO (Minimum Operating Voltage) Supply Current 1 IDD1 Supply Current 2 IDD2 Stand-by Current ISTB Oscillation Frequency FOSC Maximum Duty Ratio PFM Duty Ratio MAXDTY PFMDTY CE "High" Voltage VCEH CE "Low" Voltage VCEL EXT "High" ON Resistance EXT "Low" ON Resistance REXTBH REXTBL Efficiency EFFI Soft-Start Time TSS Conditions: (VOUT=5.0V, FOSC=300kHz) CONDITIONS Same as IDD1, Voltage which EXT/pin voltage holding “H” level No external components, CE=VDD, VOUT=0V No external components, XC6365 CE=VOUT=VDD XC6366 No external components, CE=VOUT=0V Measuring of EXT/ waveform, VIN=output voltage + 0.1V No load (XC6366 only) No external components, VOUT=0V, Voltage which EXT/pin voltage holding “L” level No external components, VOUT=0V, Voltage which EXT/pin voltage holding “H” level Same as IDD2, VEXT/=VIN-0.4V Same as IDD1, VEXT/=0.4V Use of a XP162A12A6 transistor recommended Connect RSS, CSS, CE, 0V→ 3.0V (When VIN≦3.0V, VIN=3.0V) Ta=25℃ MIN. 4.875 10.0 TYP. 5.000 - MAX. UNITS 5.125 V V 0.9 - 2.2 V - 67 67 16 - 122 122 29 0.5 μA μA μA μA 255 300 345 kHz 100 15 25 35 % % 0.65 - - V - - 0.20 V - 12 10 17 14 μA μA - 93 - % 5 10 20 msec 1. Unless otherwise stated, connect external components. VIN=VDD = 7.5V, IOUT = 330mA 2. XC6365/66C series external components: CSS=0.033μF, RSS=470kΩ 709 XC6365/6366 Series ■ELECTRICAL CHARACTERISTICS (Continued) XC6365A103MR, XC6366A103MR PARAMETER SYMBOL Output Voltage VOUT Maximum Input Voltage VIN U.V.L.O. Voltage VUVLO (Minimum Operating Voltage) Supply Current 1 IDD1 Supply Current 2 IDD2 Stand-by Current ISTB Oscillation Frequency FOSC Maximum Duty Ratio PFM Duty Ratio MAXDTY PFMDTY CE "High" Voltage VCEH CE "Low" Voltage VCEL EXT "High" ON Resistance EXT "Low" ON Resistance REXTBH REXTBL Efficiency EFFI Soft-Start Time TSS (VOUT=3.0V, FOSC=300kHz) CONDITIONS Same as IDD1, Voltage which EXT/pin voltage holding “H” level No external components, CE=VIN, VOUT=0V No external components, XC6365 CE=VDD, FB=1.2V XC6366 No external components, CE=FB=0V Measuring of EXT/ waveform, VIN=output voltage + 0.1V No load (XC6366 only) No external components, FB=0V, Voltage which EXT/pin voltage holding “L” level No external components, VOUT=0V, Voltage which EXT/pin voltage holding “H” level Same as IDD2, VEXT/=VIN-0.4V Same as IDD1, VEXT/=0.4V Use of a XP162A12A6 transistor recommended Connect RSS, CSS, CE, 0V→ 3.0V (When VIN≦3.0V, VIN=3.0V) Conditions: 1. Unless otherwise stated, connect external components. VIN=VDD = 4.5V, IOUT = 200mA 2. XC6365/66C series external components: CSS=0.033μF, RSS=470kΩ 3. RFB1 = 400kΩ, RFB2 = 200kΩ, CFB = 100ppF 710 Ta=25℃ MIN. 2.975 10.0 TYP. 3.000 - MAX. UNITS 3.075 V V 0.9 - 2.2 V - 55 55 15 - 100 100 27 0.5 μA μA μA μA 255 300 345 kHz 100 15 25 35 % % 0.65 - - V - - 0.20 V - 17 15 24 20 μA μA - 92 - % 5 10 20 msec XC6365/6366 Series ■TEST CIRCUITS Circuit 1. XC6365A, XC6366A Circuit 2. XC6365B, XC6366B Circuit 3. XC6365C, XC6366C 711 XC6365/6366 Series ■TEST CIRCUITS (Continued) Circuit 4. XC6365D, XC6366D Circuit 5. XC6365A, XC6366A (when used with a PNP transistor) Circuit 6. XC6365B, XC6366B (when used with a PNP transistor) 712 XC6365/6366 Series ■TEST CIRCUITS (Continued) Circuit 7. XC6365C, XC6366C (when used with a PNP transistor) Circuit 8. XC6365D, XC6366D (when used with a PNP transistor) Recommended Components Tr : XP162A12A6PR (Torex P-channel Power MOSFET) Please use a PNP transistor where VIN < 2.5V L : 22μH (CR54, SUMIDA, FOSC=300kHz) 47μH (CR75, SUMIDA, FOSC=180kHz) 10μH (CR54, SUMIDA, FOSC=500kHz) SD : MA2Q735 (Schottky Diode, MATSUSHITA) CL :10V, 47μF (Tantalum capacitor, NICHICHEMl MCE) CIN :16V 10μF (Tantalum capacitor, NICHICHEMI MCE) PNP Tr. Type Tr : 2SA1213 (TOSHIBA) RB : 500Ω(Adjust according to load and Tr. hFE levels) CB : 2200pF (Ceramic Type) Set up so that CB≦1 / (2π x RB x FOSC x 0.7) C, D type (soft-start externally set-up) CSS : 0.033μF (Ceramic Capacitor) RSS : 470kΩ(C type), 330kΩ(D type) B, D type (FB type) RFB : Set up so that RFB1 / RFB2 = VOUT – 1 (VOUT = setting output voltage), RFB1 = RFB2 ≦ 2MΩ CFB : Set up so that fzfb = 1÷(2π x CFB x RFB1) is within the 0.5 to 20kHz range (10kHz conventional) Adjustments necessary in respect of L, CL. e.g. : VOUT = 3.0V RFB1 = 400kΩ, RFB2 = 200kΩ, CFB = 100pF 713 XC6365/6366 Series ■NOTES ON USE 1. Take ample care to ensure that none of the IC's, nor the external component's, absolute maximum ratings are exceeded. 2. Be extremely careful when selecting parts and do not limit your reference to the specifications and characteristics for the DC/DC converter alone. The IC also depends, to a great extent, upon the external components. 3. Arrange the peripherals in the environs of the IC. In order to reduce wiring impedance, use short, thick wires. In particular, wire the load capacitor as close as possible and strengthen the ground wiring sufficiently. 4. Ground current during switching may cause the IC's operations to become unstable due to changes in ground voltage, so please strengthen the IC's GND pin surroundings. ●External Components 1. Setting soft start time To set a longer soft start time, please use XC6365C or XC6365D series which soft start function is externally set up. For the measurement of soft start time TSS, the time is needed to be between the maximum and the minimum value indicated in the chart below. Please set a soft start capacitor CSS according to the application. 2. Setting RFB1 and CFB fzfb=1 ÷ (2 π × CFB × RFB1) As the combination of RFB1 and CFB enable to set fzfb between 0.5kHz to 20kHz, within the realm of fzfb=0.5kHz to fzfb=20kHz as the chart below can be effective. Under normal condition, please set the combination to configure around fzfb=10kHz. 714 XC6365/6366 Series ■TYPICAL PERFORMANCE CHARACTERISTICS 715 XC6365/6366 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (Continued) 716 XC6365/6366 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) 717 XC6365/6366 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (Continued) 718 XC6365/6366 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) 719 XC6365/6366 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (Continued) 720 XC6365/6366 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) 721 XC6365/6366 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) 722 XC6365/6366 Series ■TYPICAL PERFORMANCE CHARACTERISTICS (Continued) 723