XC6401 Series FEATURES. TYPICAL PERFORMANCE CHARACTERISTICS Interactive Load Transient Response TYPICAL APPLICATION CIRCUITS

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1 XC Series ETR9_ Dual LDO Regulators, Low ESR Cap. Compatible GENERAL DESCRIPTION The XC series are highly accurate, Dual, low noise, CMOS LDO voltage regulators. Performance features of the series includes low output noise, high ripple rejection ratio, low dropout and very fast turn-on times. The XC includes a reference voltage source, error amplifiers, driver transistors, current limiters and phase compensators internally. The XC s current limiters' foldback circuit also operates as a short protect for the output current limiter. The output voltage for each regulator is set independently by laser trimming. Voltages are selectable in mv steps within a range of.8v to.v. The XC series is also fully compatible with low ESR ceramic capacitors, reducing cost and improving output stability. This high level of output stability is maintained even during frequent load fluctuations, due to the excellent transient response performance and high PSRR achieved across a broad range of frequencies. The EN function allows the output of each regulator to be turned off independently, resulting in greatly reduced power consumption. The XC series is available in the SOT-W or USP-B, USP-C chip-scale package. APPLICATIONS Mobile Phones Cordless phones and radio communication equipment Portable games Cameras, Video recorders Portable Audio Equipment PDAs FEATURES Maximum Output Current : More than ma (ma limit) Dropout Voltage : Operating Voltage Range :.V ~.V Range :.8V~.V (mv increments) Highly Accurate : ±% (VOUT>.V) : ±mv (VOUT.V) Low Power Consumption : μa (TYP.) Standby Current : Less than.μa (TYP.) High Ripple Rejection : Operating Temperature Range : - ~ +8 Low ESR Capacitor Compatible : Ceramic capacitor Low Output Noise Ultra Small Packages : SOT-W,USP-B,USP-C TYPICAL APPLICATION CIRCUITS SOT-W CIN uf EN VIN EN VOUT VSS VOUT CL uf TYPICAL PERFORMANCE CHARACTERISTICS Interactive Load Transient Response CL uf USP- EN VOUT VIN VOUT CIN uf EN VSS CL uf CL uf /

2 XC Series PIN CONFIGURATION VOUT VSS VOUT EN VIN SOT-W (TOP VIEW) EN USP-B / C (BOTTOM VIEW) *The dissipation pad for the USP-B/C packages 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 VSS pin. PIN ASSIGNMENT PIN NUMBER SOT-W USP-B/C PIN NAME FUNCTION EN ON/OFF Control VIN Power Input EN ON/OFF Control VOUT Output VSS Ground VOUT Output PRODUCT CLASSIFICATION Selection Guide The following options for the Regulator,, the EN pin logic, internal pull-up / down are available. Ordering Information XC DESIGNATOR DESCRIPTION SYMBOL DESCRIPTION E : High Active with pull-down resistor Regulator, F : High Active with no pull-down resistor EN type G : Low Active with pull-up resistor H : Low Active with no pull-up resistor E : High Active with pull-down resistor Regulator, F : High Active with no pull-down resistor EN type G : Low Active with pull-up resistor H : Low Active with no pull-up resistor ~ : Internally set sequential number relating output voltage of each regulators Regulator Range:.8 ~. V (mv increments) Regulator Range:.8 ~. V (mv increments) M : SOT-W Packaging Types Device Orientation D E R L : USP-B : USP-C : Embossed tape, standard feed : Embossed tape, reverse feed /

3 XC Series ABSOLUTE MAXIMUM RATINGS Ta = PARAMETER SYMBOL RATINGS UNITS Input Voltage VIN. V Output Current IOUT + IOUT 7 ma VOUT VSS -. ~ VIN +. V EN Pin Voltage VEN VSS -. ~. V SOT-W Power Dissipation USP-B Pd mw USP-C Operating Temperature Range Topr - ~ +8 Storage Temperature Range Tstg - ~ + * Sum of IOUT and IOUT. ** Pd=(VIN-VOUT)xIOUT+(VIN-VOUT)xIOUT ELECTRICAL CHARACTERISTICS XCFFxx Regulator, Regulator Ta= PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS CIRCUIT (*) VOUT (E) VIN=VOUT (T) +.V IOUT=mA.98 VOUT(T). V Maximum Output Current IOUTMAX VIN=VOUT (T) +.V - - ma Load Regulation VOUT ma IOUT ma - mv Dropout Voltage Supply Current Vdif IOUT=mA E- mv Vdif IOUT=mA E- mv ISS VIN=VEN=VOUT (T) +.V, IOUT=mA - μa Standby Current ISTB VIN=VOUT (T) +.V, VEN=VSS -.. μa Line Regulation (*7) VOUT VIN VOUT VOUT(T)+.V VIN.V VEN=VIN, IOUT=mA -.. % / V Input Voltage VIN. -. V - VOUT IOUT=mA Temperature Characteristics Topr VOUT - Topr 8 - ± - ppm/ Ripple Rejection Rate(*8) PSRR VIN=[VOUT(T)+.]VDC+.Vp-pAC IOUT=mA, f=khz db Current Limiter Ilim VIN=VOUT (T) +.V, VEN=VIN - - ma Short-Circuit Current Ishort VIN=VOUT (T) +.V, VEN=VIN - - ma EN "High" Voltage VENH. -. V EN "Low" Voltage VENL - -. V EN "High" Current IENH VIN=VEN=VOUT (T) +.V μa EN "Low" Current IENL VIN= VOUT (T) +.V, VEN=VSS μa NOTE *: VOUT(T)=Specified output voltage *: VOUT(E)=Effective output voltage (I.e. the output voltage when "VOUT(T)+.V" is provided at the VIN pin while maintaining a certain IOUT value). *: If VOUT (T).V, MIN VOUT (T) - mv, MAX VOUT (T) + mv *: Vdif={VIN (*) -VOUT (*) } *: VOUT=A voltage equal to 98% of the output voltage whenever an amply stabilized IOUT {VOUT(T)+.V} is input. *: VIN=the input voltage when VOUT appears as input voltage is gradually decreased. *7: When VOUT(T)>.V,.V<VIN<.V *8: When VOUT(T)>.8V, VIN=.7VDC+.Vp-pAC *9: Unless otherwise stated, VIN=VOUT(T)+.V /

4 XC Series ELECTRICAL CHARACTERISTICS (Continued) Dropout Voltage E- E- DETECT VOLTAGE SETTING OUTPUT VOLTAGE DROPOUT VOLTAGE DROPOUT VOLTAGE (V) (mv) (mv) (V) VOUT Vdif Vdif VOUT(T) MIN. MAX. TYP. MAX. TYP. MAX /

5 XC Series DROPOUT VOLTAGE CHART (Continued) Dropout Voltage (Continued) E- E- DETECT VOLTAGE SETTING OUTPUT VOLTAGE DROPOUT VOLTAGE DROPOUT VOLTAGE (V) (mv) (mv) (V) VOUT Vdif Vdif VOUT(T) MIN. MAX. TYP. MAX. TYP. MAX /

6 XC Series OPERATIONAL EXPLANATION < Control> The voltage divided by resistors R & R is compared with the internal reference voltage by the error amplifier. The P-channel MOSFETs, which are connected to the VOUT and VOUT pins, are then driven by the subsequent output signal. The output voltages at the VOUT and VOUT pins are controlled and stabilized by a system of negative feedback. The current limit circuit and short protect circuit operate in relation to the level of output current. Further, the IC's internal circuitry can be shutdown via the EN pin's signal. EN ON/OFF Control - Error Amp + Current Limit VOUT VR each circuit R R VIN VSS VR each circuit Voltage Reference - Error Amp + Current Limit R VOUT EN ON/OFF Control R <Low ESR Capacitors> With the XC series, a stable output voltage is achievable even if used with low ESR capacitors as a phase compensation circuit is built-in. In order to ensure the effectiveness of the phase compensation, we suggest that output capacitors (CL, CL) is connected as close as possible to the output pins (VOUT and VOUT) and the VSS pin. Please use an output capacitor with a capacitance value of at least μf. Also, please connect an input capacitor (CIN) of μf between the VIN pin and the VSS pin in order to ensure a stable power input. <Current Limiter, Short-Circuit Protection> The XC series includes a combination of a fixed current limiter circuit & a foldback circuit which aid the operations of the current limiter and circuit protection. When the load current reaches the current limit level, the fixed current limiter circuit operates and output voltage drops. As a result of this drop in output voltage, the foldback circuit operates, output voltage drops further and output current decreases. When the output pin is shorted, a current of about ma flows. <EN Pins> The IC's internal circuitry can be shutdown via the signal from the EN and EN pins with the XC series. In shutdown mode, output at the VOUT and VOUT pins will be pulled down to the VSS level via R & R and R & R. The operational logic of the IC's EN and EN pins are selectable (please refer to the selection guide). Note that as the standard XCFF type's regulator and are both ' High Active/No Pull Down', operations will become unstable with the EN or EN pins open. Although the EN and EN pins are equal to an inverter input with CMOS hysteresis, with either the pull-up or pull-down options, the EN and EN pins input current will increase when the IC is in operation. We suggest that you use this IC with either a VIN voltage or a VSS voltage input at the EN and EN pins. If this IC is used with the correct specifications for the EN and EN pins, the operational logic is fixed and the IC will operate normally. However, supply current may increase as a result of through current in the IC's internal circuitry. NOTES ON USE. Please use this IC within the stated absolute maximum ratings. The IC is liable to malfunction should the ratings be exceeded.. Where wiring impedance is high, operations may become unstable due to noise and/or phase lag depending on output current. Please keep the resistance low between VIN and VSS wiring in particular.. Please wire the input capacitor (CIN) and the output capacitors (CL, CL) as close to the IC as possible. /

7 XC Series TEST CIRCUITS Circuit CIN, CL, CL : μf(ceramic) VIN V CIN EN VOUT EN VOUT VSS A CL A CL IOUT RL IOUT RL V V EN/EN : High Active = EN=VIN Low Active = EN=VSS Circuit EN/EN :. High Active with pull-down resistor built-in VR Supply Current ISS=I (Note:EN=ON, EN=OFF) VR Supply Current ISS=I (Note:EN=OFF, EN=ON). High Active with no pull-down resistor built-in VR Supply Active Current ISS=I (Note:EN=ON, EN=OFF) VR Supply Current ISS=I (Note:EN=OFF, EN=ON). Low Active with pull-up resistor built-in VR Supply Current ISS=I+I (Note:EN=ON, EN=OFF) VR Supply Current ISS=I+I (Note:EN=OFF, EN=ON). Low Active with no pull-up resistor built-in VR Supply Current ISS=I (Note:EN=ON, EN=OFF) VR Supply Current ISS=I (Note:EN=OFF, EN=ON) Circuit EN/EN: High Active = EN= VSS Low Active = EN= VIN 7/

8 XC Series TEST CIRCUITS (Continued) Circuit Circuit EN/EN : High Active = EN=VIN Low Active = EN=VSS 8/

9 XC Series TYPICAL PERFORMANCE CHARACTERISTICS () vs. Output Current XC (.8V) XC(.8V). VIN=.8V. VIN=.V.8... Topr = 8 O C = O C = - O C.8... VIN =.V =.8V =.8V =.V.. XC(.8V) XC(.8V). VIN=.8V. VIN=.V Topr = 8 O C = O C = - O C..... VIN =.V =.V =.V.... XC(.V) XC(.V). VIN=.V. VIN=.V Topr = 8 O C = O C = - O C..... VIN =.V =.V =..V.... 9/

10 XC Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) () vs. Output Current (Continued) XC(.V) XC(.V). VIN=.V. VIN=.V Topr = 8 O C = O C = - O C.... VIN =.V =.V.. () vs. Input Voltage XC(.8V) XC(.8V). Topr = O C.9 Topr = O C IOUT = ma = ma = ma IOUT = ma = ma = ma XC(.8V) Topr = O C.9 XC(.8V) Topr = O C.8... IOUT = ma = ma = ma IOUT = ma = ma = ma /

11 XC Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) () vs. Input Voltage (Continued). XC(.V) Topr = O C. XC(.V) Topr = O C..8.. IOUT = ma = ma = ma IOUT = ma = ma = ma XC(.V) XC(.V). Topr = O C. Topr = O C..8.. IOUT = ma = ma = ma IOUT = ma = ma = ma () Dropout Voltage vs. Output Current XC(.8V) XC(.8V).. Dropout Voltage Vdif (V).8... Topr = 8 O C = O C = - O C Dropout Voltage Vdif (V).... Topr = 8 O C = O C = - O C.. /

12 XC Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) () Dropout Voltage vs. Output Current (Continued) XC(.V) XC(.V).. Dropout Voltage Vdif (V).... Topr = 8 O C = O C = - O C Dropout Voltage Vdif (V).... Topr = 8 O C = O C = - O C.. () Supply Current vs. Input Voltage XC(.8V) XC(.8V) Supply Current ISS (ua) 8 Topr = 8 O C = O C = - O C Supply Current ISS (ua) 8 Topr = 8 O C = O C = - O C Intput Voltage VIN (V) XC(.V) XC(.V) Supply Current ISS (ua) 8 Topr = 8 O C = O C = - O C Supply Current ISS (ua) 8 Topr = 8 O C = O C = - O C /

13 XC Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) () vs. Ambient Temperature.8 XC(.8V) VIN =.8V.9 XC(.8V) VIN =.V IOUT = ma = ma = ma = ma IOUT = ma = ma = ma = ma Ambient Temperature Topr ( O C) Ambient Temperature Topr ( O C). XC(.V) VIN =.V. XC(.V) VIN =.V...9 IOUT = ma = ma = ma = ma...9 IOUT = ma = ma = ma = ma Ambient Temperature Topr ( O C) Ambient Temperature Topr ( O C) () Supply Current vs. Ambient Temperature XC(.8V) XC(.8V) VIN =.8V VIN =.8V Supply Current IDD ( μa) 8 Supply Current IDD ( μa) Ambient Temperature Topr ( O C) Ambient Temperature Topr ( O C) /

14 XC Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) () Supply Current vs. Ambient Temperature (Continued) XC(.V) VIN =.V XC(.V) VIN =.V Supply Current IDD ( μa) 8 Supply Current IDD ( μa) Ambient Temperature Topr ( O C) Ambient Temperature Topr ( O C) /

15 XC Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (7) Input Transient Response. XC(.8V) tr=tf=use CL=uF (ceramics), IOUT=uA. XC(.8V) tr=tf=use CL=uF (ceramics), IOUT=mA Input Voltage Input Voltage -.7 Time (usec/div) -.7 Time (usec/div) - XC(.8V) XC(.8V). tr=tf=use CL=uF (ceramics), IOUT=mA. tr=tf=use CL=uF (ceramics), IOUT=uA Input Voltage Input Voltage.7 Time (usec/div) -.7 Time (usec/div) XC(.8V) XC(.8V). tr=tf=use CL=uF (ceramics), IOUT=mA. tr=tf=use CL=uF (ceramics), IOUT=mA Input Voltage Input Voltage.7 Time (usec/div).7 Time (usec/div) /

16 XC Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (7) Input Transient Response (Continued). XC(.V) tr=tf=use CL=uF (ceramics), IOUT=uA. XC(.V) tr=tf=use CL=uF (ceramics), IOUT=mA Input Voltage....9 Input Voltage.9.9 Time (usec/div) Time (usec/div) XC(.V) XC(.V). tr=tf=use CL=uF (ceramics), IOUT=mA. tr=tf=use CL=uF (ceramics), IOUT=uA Input Voltage....9 Input Voltage.9 Time (usec/div).9 Time (usec/div) XC(.V) XC(.V). tr=tf=use CL=uF (ceramics), IOUT=mA 8. tr=tf=use CL=uF (ceramics), IOUT=mA Input Voltage Input Voltage Time (usec/div) Time (usec/div) /

17 XC Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (8) Load Transient Response.9 XC(.8V) VIN=.8V, tr=tf=use CIN=CL=uF (ceramics).9 XC(.8V) VIN=.8V, tr=tf=use CIN=CL=uF (ceramics) ma Output Current ma Output Current ma ma. Time (usec/div). Time (usec/div) XC(.8V) XC(.8V).9 VIN=.V, tr=tf=use CIN=CL=uF (ceramics).9 VIN=.V, tr=tf=use CIN=CL=uF (ceramics) ma ma Output Current ma ma Output Current. Time (usec/div). Time (usec/div) XC(.V) XC(.V). VIN=.V, tr=tf=use CIN=CL=uF (ceramics). VIN=.V, tr=tf=use CIN=CL=uF (ceramics) ma ma Output Current ma ma Output Current. Time (usec/div). Time (usec/div) 7/

18 XC Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (8) Load Transient Response (Continued) XC(.V) XC(.V). VIN=.V, tr=tf=use CIN=CL=uF (ceramics). VIN=.V, tr=tf=use CIN=CL=uF (ceramics) ma Output Current ma Output Current. ma. ma Time (usec/div) Time (usec/div) 8/

19 XC Series TYPICAL PERFORMANCE CHARACTERISTICS (Continued) (9) Ripple Rejection Rate 8 XC(.8V) VIN=.8V DC+.Vp-pAC IOUT=mA, CL=uF (ceramics) 8 XC(.8V) VIN=.8V DC+.Vp-pAC IOUT=mA, CL=uF (ceramics) Ripple Rejection Rate RR (db) Ripple Rejection Rate RR (db).... Ripple Frequency f (khz) Ripple Frequency f (khz) 8 XC(.V) VIN=.V DC+.Vp-pAC IOUT=mA, CL=uF (ceramics) 8 XC(.V) VIN=.7V DC+.Vp-pAC IOUT=mA, CL=uF (ceramics) Ripple Rejection Rate RR (db) Ripple Rejection Rate RR (db).. Ripple Frequency f (khz).. Ripple Frequency f (khz) () Cross Talk XC (VR:.V, VR:.8V). VIN=.V, CIN= CL=uF (ceramics) VR (.V) ma VR (.8V) VR Output Current Output Current IOUT (ma) ma. Time (usec/div) 9/

20 XC Series PACKAGING INFORMATION SOT-W USP-B /

21 XC Series PACKAGING INFORMATION (Continued) USP-C /

22 XC Series PACKAGING INFORMATION (Continued) USP-B Recommended Pattern Layout USP-B Recommended Metal Mask Design USP-C Recommended Pattern Layout USP-C Recommended Metal Mask Design /

23 XC Series MARKING RULE SOT-W Represents product series MARK PRODUCT SERIES XCxxxxMx SOT-W (TOP VIEW) Represents internally set sequential number ex.) MARK INTERNALLY SET SEQUENTIAL NUMBER PRODUCT SERIES C C XCEED C C XCEED XCFF 8 8 XCFF7 Represents production lot number to 9, A to Z reverse character to 9, A to A repeated (G, I, J, O, Q, W excepted). USP-B, USP-C Represents product series MARK PRODUCT SERIES XCxxxxxx Represents type of VR regulator USP-B (TOP VIEW) MARK OPTIONAL FUNCTIONS PRODUCT SERIES B EN: High Active with no pull-down resistor XCBxxxxx E EN: High Active with pull-down resistor, High speed XCExxxxx F EN: High Active with no pull-down resistor, High speed XCFxxxxx Z EN: Low Active with pull-up resistor, High speed XCGxxxxx H EN: Low Active with no pull-up resistor, High speed XCHxxxxx K EN: High Active with pull-down resistor, Low power consumption XCKxxxxx L EN: High Active with no pull-down resistor, Low power consumption XCLxxxxx M EN: Low Active with pull-up resistor, Low power consumption XCMxxxxx N EN: Low Active with no pull-up resistor, Low power consumption XCNxxxxx Represents type of VR regulator USP-C (TOP VIEW) MARK OPTIONAL FUNCTIONS PRODUCT SERIES B EN: High Active with no pull-down resistor XCxBxxxx E EN: High Active with pull-down resistor, High speed XCxExxxx F EN: High Active with no pull-down resistor, High speed XCxFxxxx Z EN: Low Active with pull-up resistor, High speed XCxGxxxx H EN: Low Active with no pull-up resistor, High speed XCxHxxxx K EN: High Active with pull-down resistor, Low power consumption XCxKxxxx L EN: High Active with no pull-down resistor, Low power consumption XCxLxxxx M EN: Low Active with pull-up resistor, Low power consumption XCxMxxxx N EN: Low Active with no pull-up resistor, Low power consumption XCxNxxxx Represents VR output voltage (serial number ex.) MARK OUTPUT VOLTAGE VR (V) VR (V) PRODUCT SERIES.8. XCxxxx.8.8 XCxxxx Represents production lot number to 9, A to Z repeated (G, I, J, O, Q, W excepted) Note: No character inversion used /

24 XC Series. The products and product specifications contained herein are subject to change without notice to improve performance characteristics. Consult us, or our representatives before use, to confirm that the information in this catalog is up to date.. We assume no responsibility for any infringement of patents, patent rights, or other rights arising from the use of any information and circuitry in this catalog.. Please ensure suitable shipping controls (including fail-safe designs and aging protection) are in force for equipment employing products listed in this catalog.. The products in this catalog are not developed, designed, or approved for use with such equipment whose failure of malfunction can be reasonably expected to directly endanger the life of, or cause significant injury to, the user. (e.g. Atomic energy; aerospace; transport; combustion and associated safety equipment thereof.). Please use the products listed in this catalog within the specified ranges. Should you wish to use the products under conditions exceeding the specifications, please consult us or our representatives.. We assume no responsibility for damage or loss due to abnormal use. 7. All rights reserved. No part of this catalog may be copied or reproduced without the prior permission of Torex Semiconductor Ltd. /