XC6365_2 TOREX | Alldatasheet
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PWM Controlled, PWM/PFM Switchable Step-Down DC/DC Converters ˙GENERAL DESCRIPTION The XC6365/XC6366 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. 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 t he 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 10ms 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 0.5ЖA. With UVLO internal, the external transistor will be forcibly switched off if used below the stipulated voltage. ˙APPLICATIONS ˔Electronic information organizers ˔Palmtops ˔Cellular and portable phones ˔Portable audio systems ˔Various multi-function power supplies ˙TYPICAL APPLICATION CIRCUIT ˙FEATURES Input Voltage Range : 2.2V ~ 10V (VOUT type) Output Voltage Range : 1.5V ~ 6.0V programmable in 0.1V 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 : 9 2 % ( T Y P . ) Stand-by Capability : ISTB=0.5 ЖA (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) Maximum Duty Ratio : 100% PWM/PFM Switching Control (XC6366) Package : SOT-25, USP-6C ˙TYPICAL PERFORMANCE CHARACTERISTICS ˑGreenOperation-Compatible ETR0501_003
SOT-25 USP-6 PIN NAME FUNCTION 1 3 EXT/ External Transistor Connection 2 2 V DD Power Supply 3 1 GND Ground 4 6 CE Chip Enable Soft-Start Capacitor Connection with Soft-Start Externally Set-Up Types (C, D) 5 4 V OUT (FB) Output Voltage Monitor FB with Externally Set-Up Types (B, D) - 5 NC No Connection ˙PIN CONFIGURATION ˙PIN ASSIGNMENT ˙PRODUCT CLASSIFICATION ˔Selection Guide *The dissipation pad of the USP-6C package should be left open. If the circuit needs to be connected to other pin, it should be connected to the V DD (No.2) pin.
DESIGNATOR DESCRIPTION SYMBOL DESCRIPTION A : V OUT type: Internally set-up, soft-start internally set-up B : FB type: Externally set-up, soft-start internally set-up C : V OUT type: Internally set-up, soft-start externally set-up ᶃ Type of DC/DC Converter D : FB type: Externally set-up, soft-start internally set-up 15ʙ60 : V OUT type: 3.0V output ˠ ᶄ=3, ᶅ=0 ᶄ ᶅ Output Voltage 10 : FB type: 10 fixed ˠ ᶄ=1, ᶅ=0 fixed 3 : 300kHz 5 : 500kHz (custom) ᶆ Oscillation Frequency 2 : 180kHz (custom) M : SOT-25 (SOT-23-5) ᶇ Package E : USP-6C R : Embossed tape, standard feed ᶈ Device Orientation L : Embossed tape, reverse feed ˔Ordering Information ˙PRODUCT CLASSIFICATION (Continued) XC6365ᶃᶄᶅᶆᶇᶈ PWM control XC6366ᶃᶄᶅᶆᶇᶈ PWM/PFM switching control
˙BLOCK DIAGRAMS XC6365, XC6366 Series A, C type (VOUT) XC6365, XC6366 Series B, D type (FB)
PARAMETER SYMBOL RATINGS UNITS VIN Pin Voltage V DD -0.3 ~ +12 V VOUT Pin Voltage V OUT -0.3 ~ V IN +0.3 V FB Pin Voltage V FB -0.3 ~ V IN +0.3 V CE Pin Voltage V CE -0.3 ~ V IN +0.3 V EXT/ Pin Voltage V EXT/ -0.3 ~ V IN +0.3 V EXT/ Pin Current IEXT/ ʶ100 mA SOT-25 150 Power Dissipation USP-6C Pd 100 mW Operating Temperature Range Topr -30 ~ +80 ˆ Storage Temperature Range Tstg -40 ~ +125 ˆ PARAMETER SYMBOL CONDITIONS MIN. TYP . MAX. UNITS Output Voltage V OUT 3.218 3.300 3.383 V Maximum Input Voltage V IN 10.0 - - V UVLO Voltage (Minimum Operating Voltage) VUVLO Same as IDD1, Voltage which EXT/pin voltage holding “H” level 0.9 - 2.2 V Supply Current 1 I DD1 No external components, CE=V DD, VOUT=0V - 57 102 ЖA XC6365 - 57 102 ЖASupply Current 2 I DD2 No external components, CE=VOUT=VDD XC6366 - 15 27 ЖA Stand-by Current ISTB No external components, CE=V OUT=0V - - 0.5 ЖA Oscillation Frequency f OSC Measuring of EXT/ waveform, VIN=output voltage + 0.1V 255 300 345 kHz Maximum Duty Ratio MAXDTY 100 - - % PFM Duty Ratio PFMDTY No load (XC6366 only) 15 25 35 % CE "High" Voltage V CEH No external components, VOUT=0V, Voltage which EXT/pin voltage holding “L” level 0.65 - - V CE "Low" Voltage V CEL No external components, VOUT=0V, Voltage which EXT/pin voltage holding “H” level - - 0.20 V EXT "High" ON Resistance R EXTBH Same as I DD2, VEXT/=VDD-0.4V - 16 22 ЖA EXT "Low" ON Resistance R EXTBL Same as I DD1, VEXT/=0.4V - 14 19 ЖA Efficiency EFFI Use of a XP162A12A6 transistor recommended - 92 - % Soft-Start Time t SS Connect RSS, CSS, CE, 0Vˠ 3.0V (When VINʽ3.0V, VIN=3.0V) 5 10 20 ms ˙ABSOLUTE MAXIMUM RATINGS Ta = 25ˆ ˙ELECTRICAL CHARACTERISTICS XC6365A333MR, XC6366A333MR Conditions: 1. Unless otherwise stated, connect external components. VIN=VDD = 5.0V, IOUT = 220mA 2. XC6365/66C series external components: CSS=0.033ЖF, RSS=470kЊ (VOUT=3.3V, f OSC=300kHz) Ta=25ˆ Note: Voltage is all ground standardized.
PARAMETER SYMBOL CONDITIONS MIN. TYP . MAX. UNITS Output Voltage V OUT 4.875 5.000 5.125 V Maximum Input Voltage V IN 10.0 - - V UVLO Voltage (Minimum Operating Voltage) VUVLO Same as IDD1, Voltage which EXT/pin voltage holding “H” level 0.9 - 2.2 V Supply Current 1 I DD1 No external components, CE=V DD, VOUT=0V - 67 122 ЖA XC6365 - 67 122 ЖASupply Current 2 I DD2 No external components, CE=VOUT=VDD XC6366 - 16 29 ЖA Stand-by Current ISTB No external components, CE=V OUT=0V - - 0.5 ЖA Oscillation Frequency f OSC Measuring of EXT/ waveform, VIN=output voltage + 0.1V 255 300 345 kHz Maximum Duty Ratio MAXDTY 100 - - % PFM Duty Ratio PFMDTY No load (XC6366 only) 15 25 35 % CE "High" Voltage V CEH No external components, VOUT=0V, Voltage which EXT/pin voltage holding “L” level 0.65 - - V CE "Low" Voltage V CEL No external components, VOUT=0V, Voltage which EXT/pin voltage holding “H” level - - 0.20 V EXT "High" ON Resistance R EXTBH Same as I DD2, VEXT/=VIN-0.4V - 12 17 ЖA EXT "Low" ON Resistance R EXTBL Same as I DD1, VEXT/=0.4V - 10 14 ЖA Efficiency EFFI Use of a XP162A12A6 transistor recommended - 93 - % Soft-Start Time t SS Connect RSS, CSS, CE, 0Vˠ 3.0V (When V INʽ3.0V, VIN=3.0V) 5 10 20 ms XC6365A503MR, XC6366A503MR Conditions: 1. Unless otherwise stated, connect external components. V IN=VDD = 7.5V, IOUT = 330mA 2. XC6365/66C series external components: CSS=0.033ЖF, RSS=470kЊ (VOUT=5.0V, fOSC=300kHz) Ta=25ˆ ˙ELECTRICAL CHARACTERISTICS (Continued)
PARAMETER SYMBOL CONDITIONS MIN. TYP . MAX. UNITS Output Voltage V OUT 2.925 3.000 3.075 V Maximum Input Voltage V IN 10.0 - - V UVLO Voltage (Minimum Operating Voltage) VUVLO Same as IDD1, Voltage which EXT/pin voltage holding “H” level 0.9 - 2.2 V Supply Current 1 I DD1 No external components, CE=V IN, VOUT=0V - 55 100 ЖA XC6365 - 55 100 ЖASupply Current 2 I DD2 No external components, CE=VDD, FB=1.2V XC6366 - 15 27 ЖA Stand-by Current ISTB No external components, CE=FB=0V - - 0.5 ЖA Oscillation Frequency f OSC Measuring of EXT/ waveform, VIN=output voltage + 0.1V 255 300 345 kHz Maximum Duty Ratio MAXDTY 100 - - % PFM Duty Ratio PFMDTY No load (XC6366 only) 15 25 35 % CE "High" Voltage V CEH No external components, FB=0V, Voltage which EXT/pin voltage holding “L” level 0.65 - - V CE "Low" Voltage V CEL No external components, VOUT=0V, Voltage which EXT/pin voltage holding “H” level - - 0.20 V EXT "High" ON Resistance R EXTBH Same as I DD2, VEXT/=VIN-0.4V - 17 24 ЖA EXT "Low" ON Resistance R EXTBL Same as I DD1, VEXT/=0.4V - 15 20 ЖA Efficiency EFFI Use of a XP162A12A6 transistor recommended - 92 - % Soft-Start Time t SS Connect RSS, CSS, CE, 0Vˠ 3.0V (When VINʽ3.0V, VIN=3.0V) 5 10 20 ms XC6365B103MR, XC6366B103MR Conditions: 1. Unless otherwise stated, connect external components. V IN=VDD = 4.5V, IOUT = 200mA 2. XC6365/66C series external components: CSS=0.033ЖF, RSS=470kЊ 3. RFB1 = 400kЊ, RFB2 = 200kЊ, CFB = 100ppF (VOUT=3.0V, fOSC=300kHz) Ta=25 ˆ ˙ELECTRICAL CHARACTERISTICS (Continued)
˙TEST CIRCUITS Circuit 1. XC6365A, XC6366A Circuit 2. XC6365B, XC6366B Circuit 3. XC6365C, XC6366C
Circuit 4. XC6365D, XC6366D Circuit 6. XC6365B, XC6366B (when used with a PNP transistor) Circuit 5. XC6365A, XC6366A (when used with a PNP transistor) ˙TEST CIRCUITS (Continued)
Circuit 7. XC6365C, XC6366C (when used with a PNP transistor) Circuit 8. XC6365D, XC6366D (when used with a PNP transistor) ˙TEST CIRCUITS (Continued) Recommended Components C, D type (soft-start externally set-up) Tr : XP162A12A6PR (Torex P-channel Power MOSFET) C SS : 0.033ЖF (Ceramic Capacitor) Please use a PNP transistor where V IN < 2.5V R SS : 470kΩ(C type), 330kΩ(D type) L : 22 ЖH (CR54, SUMIDA, fOSC=300kHz) 47 ЖH (CR75, SUMIDA, fOSC=180kHz) B, D type (FB type) 10 ЖH (CR54, SUMIDA, fOSC=500kHz) R FB : Set up so that RFB1 / RFB2 = VOUT – 1 SD : MA2Q735 (Schottky Diode, MATSUSHITA) (V OUT = setting output voltage), CL :10V, 47 ЖF (Tantalum capacitor, NICHICHEMl MCE) RFB1 = RFB2 ʽ 2M Њ CIN :16V 10 ЖF (Tantalum capacitor, NICHICHEMI MCE) C FB : Set up so that fzfb = 1ʸ(2К x C FB x RFB1) is within the 0.5 to 20kHz range (10kHz conventional) PNP Tr. Type Adjustments necessary in respect of L, C L. Tr : 2SA1213 (TOSHIBA) e.g. : V OUT = 3.0V RB : 500 Њ(Adjust according to load and Tr. hFE levels) R FB1 = 400kΩ, RFB2 = 200kΩ, CFB = 100pF CB : 2200pF (Ceramic Type) Set up so that CBʽ1 / (2К x R B x FOSC x 0.7)
˙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 ʸ (2 К ʷ C FB ʷ R FB1) As the combination of R FB1 and C FB enable to set fzfb between 0.5kHz to 20kHz, within th e 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.
˙TYPICAL PERFORMANCE CHARACTERISTICS
˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (Continued)
˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
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˙TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
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˙PACKAGING INFORMATION ˔SOT-25 ˔USP-6C ˔USP-6C Reference Pattern Layout ˔USP-6C Reference Metal Mask Design
MARK PRODUCT SERIES MARK PRODUCT SERIES A XC6365A K XC6366A B XC6365B L XC6366B C XC6365C M XC6366C D XC6365D N XC6366D OSCILLATION FREQUENCY (kHz) OUTPUT VOLTAGE 100 180 300 500 1.x B 1 1 B 2.x C 2 2 C 3.x D 3 3 D 4.x E 4 4 E 5.x F 5 5 F 6.x H 6 6 H OSCILLATION FREQUENCY (kHz) OUTPUT VOLTAGE 100 180 300 500 x.0 0 0 A A x.1 1 1 B B x.2 2 2 C C x.3 3 3 D D x.4 4 4 E E x.5 5 5 F F x.6 6 6 H H x.7 7 7 K K x.8 8 8 L L x.9 9 9 M M ˙MARKING RULE ᶃRepresents product classification ᶄRepresents integer of output voltage and oscillation frequency ᶅRepresents decimal number of output voltage and oscillation frequency ᶆRepresents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted) ① ② ③ ④ 123 SOT-25 (TOP VIEW)
A XC6365/66A***E* B XC6365/66B***E* C XC6365/66C***E* D XC6365/66D***E* MARK ᶅ ᶆ OUTPUT VOLTAGE (V) PRODUCT SERIES 3 3 3.3 XC6365/66*33*E* 5 0 5.0 XC6365/66*50*E* MARK OCSILLATION FREQUENCY PRODUCT SERIES 2 180kHz XC6365/66***2E* 3 300kHz XC6365/66***3E* 5 500kHz XC6365/66***5E* ˙MARKING RULE (Continued) ᶄ Represents product classification ᶅᶆ Represents output voltage e.g.: ᶈ Represents production lot number 0 to 9, A to Z repeated (G, I, J, O, Q, W excepted) USP-6C (TOP VIEW) ᶃ Represents product series ᶇ Represents oscillation frequency
- The products and product specifications cont ained herein are subject to change without notice to improve performance characteristic s. Consult us, or our representatives before use, to confirm that the information in this datasheet is up to date. 2. We assume no responsibility for any infri ngement of patents, pat ent rights, or other rights arising from the use of any information and circuitry in this datasheet. 3. Please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this datasheet. 4. The products in this datasheet are not devel oped, designed, or approved for use with such equipment whose failure of malfuncti on can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. Atomic energy; aerospace; transpor t; combustion and associated safety equipment thereof.) 5. Please use the products listed in this datasheet within the specified ranges. Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives. 6. We assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this dat asheet may be copied or reproduced without the prior permission of TOREX SEMICONDUCTOR LTD.