Low Power/Fast MODE alternative 200mA LDO REGULATOR

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Frederick Holt
6 years ago
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1 RPx SERIES Low Power/Fast MODE alternative ma LDO REGULATOR OUTLINE NO.EA-79- The RPx Series consist of CMOS-based voltage regulator ICs with high output voltage accuracy, low dropout voltage and low supply current. These ICs perform with the chip enable function and realize a standby mode with ultra low supply current. To prevent the destruction by over current, the current limit circuit is included. The RP Series have -mode. One is standby mode with CE pin. The other two are the fast response mode (Fast Mode) and the low power mode, and switch over automatically according to the load current of the LDO. Supply current of IC itself at light load is automatically reduced. The output voltage is maintained between Fast Mode and ECO Mode. The RPx consists of a voltage reference unit, an error amplifier, a resister net for voltage setting, and a current limit circuit. Since the packages for these ICs are SOT--5, SC-88A, and DFN(PLP)-, high density mounting of the ICs on boards is possible. FEATURES Input Voltage Range...V to 5.5V Range...8V to.v (.V steps) (For other voltages, please refer to MARK INFORMATIONS.) Supply Current (IOUT=mA)...Typ..5μA Supply Current (IOUT=mA)...Typ. 5μA Supply Current (Standby Mode)...Typ..μA Dropout Voltage...Typ..V (IOUT=mA, VOUT=.8V) Ripple Rejection...Typ. 7dB (f=khz, VOUT=.8V, IOUT=mA) Line Regulation...Typ..%/V (IOUT=mA) Packages...DFN(PLP)-, SC-88A, SOT--5 Built-in Foldback Protection Circuit...Typ. 6mA (Current at short mode) Ceramic capacitors are recommended to be used with this IC...7μF or more APPLICATIONS Power source for portable communication equipment. Power source for electrical appliances such as cameras, VCRs and camcorders. Power source for battery-powered equipment.

2 RPx BLOCK DIAGRAMS RPxxxxB RPxxxxD VDD VOUT VDD VOUT Vref Vref Current Limit Current Limit CE GND CE GND SELECTION GUIDE The output voltage, auto discharge function, and package, for the ICs can be selected at the user s request. Product Name Package Quantity per Reel Pb Free Halogen Free RPKxx -TR DFN(PLP)-,pcs Yes Yes RPQxx -TR-FE SC-88A,pcs Yes Yes RPNxx -TR-FE SOT--5,pcs Yes Yes xx : The output voltage can be designated in the range from.8v(8) to.v() in.v steps. (For other voltages, please refer to MARK INFORMATIONS.) : The auto discharge function at off state are options as follows. (B) without auto discharge function at off state (D) with auto discharge function at off state Auto-discharge function quickly lowers the output voltage to V, when the chip enable signal is switched from the active mode to the standby mode, by releasing the electrical charge accumulated in the external capacitor.

3 RPx PIN CONFIGURATIONS DFN(PLP)- SC-88A SOT--5 Top View Bottom View 5 5 (mark side) (mark side) PIN DESCRIPTIONS DFN(PLP)- Pin No Symbol Pin Description VOUT Output Pin GND Ground Pin CE Chip Enable Pin ("H" Active) VDD Input Pin Tab is GND level. (They are connected to the reverse side of this IC.) The tab is better to be connected to the GND, but leaving it open is also acceptable. SC-88A Pin No Symbol Pin Description CE Chip Enable Pin ("H" Active) NC No Connection GND Ground Pin VOUT Output Pin 5 VDD Input Pin SOT--5 Pin No Symbol Pin Description VDD Input Pin GND Ground Pin CE Chip Enable Pin ("H" Active) NC No Connection 5 VOUT Output Pin

4 RPx ABSOLUTE MAXIMUM RATINGS Symbol Item Rating Unit VIN Input Voltage 6. V V (CE Pin). to 6. V VOUT. to VIN +. V IOUT Output Current ma Power Dissipation (DFN(PLP)-) (Standard Test Land Pattern) PD Power Dissipation (SC-88A) (Standard Test Land Pattern) 8 mw Power Dissipation (SOT--5) (Standard Test Land Pattern) Ta Operating Temperature Range to 85 C Tstg Storage Temperature Range 55 to 5 C ) For Power Dissipation, please refer to PACKAGE INFORMATION. ABSOLUTE MAXIMUM RATINGS Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the permanent damages and may degrade the life time and safety for both device and system using the device in the field. The functional operation at or over these absolute maximum ratings is not assured. RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS) All of electronic equipment should be designed that the mounted semiconductor devices operate within the recommended operating conditions. The semiconductor devices cannot operate normally over the recommended operating conditions, even if when they are used over such conditions by momentary electronic noise or surge. And the semiconductor devices may receive serious damage when they continue to operate over the recommended operating conditions.

5 RPx ELECTRICAL CHARACTERISTICS VIN=Set VOUT+V, IOUT=mA, CIN=COUT =.7μF, unless otherwise noted. The specification in is checked and guaranteed by design engineering at C Ta 85 C. (Ta=5 C) Symbol Item Conditions Min. Typ. Max. Unit VOUT IOUT=5mA (Fast Mode) Ta=5 C IOUT=5mA (Fast Mode) - C Ta 85 C V OUT >.V.99. V OUT.V -mv mv V OUT >.V V OUT.V 7mV 5mV IOUT Output Current ma VOUT / IOUT Load Regulation ma I OUT ma V OUT >.V.. % V OUT.V mv ma I OUT ma mv VDIF Dropout Voltage Refer to the "Dropout Voltage" ISS Supply Current (IOUT=mA)* IOUT=mA.5 5. μa ISS Supply Current (IOUT=mA) IOUT=mA 5 μa Istandby Standby Current VCE=GND.. μa IOUTH Fast Mode switch-over current IOUT= Light load to Heavy load 8. ma IOUTL Low Power Mode switch-over current IOUT= Heavy load to Light load.. ma IOUT=mA ±.5 VOUT VOUT+.5V VIN 5V (Low Power Mode) Line Regulation / VIN.V VIN IOUT=mA ±. ±. (Fast Mode) %/V RR Ripple Rejection f=khz Ripple.Vp-p VIN=VOUT+.V, IOUT=mA VOUT.8V 75.8< VOUT.8V 7.8< VOUT.V 65. < VOUT 6 VIN Input Voltage. 5.5 V VOUT / Ta Temperature Coefficient C Ta 85 C ± ISC Short Current Limit VOUT=V 6 ma ICEPD CE Pull-down Constant Current V db ppm / C..6 μa VCEH H. V VCEL L. V RLOW Low Output Nch Tr. ON Resistance (of D version) VIN =.V VCE = V 6 Ω All of units are tested and specified under load conditions such that Tj Ta=5 C except for Ripple Rejection, Output Voltage Temperature Coefficient. ) The value of supply current is excluding the Pull-down constant current of CE Pin. 5

6 RPx Dropout Voltage Ta=5 C V OUT (V) Dropout Voltage V DIF (V) Condition Typ. Max..8 VOUT< VOUT< VOUT< VOUT< VOUT< VOUT< VOUT< VOUT<.8 IOUT=mA...8 VOUT< VOUT< VOUT< VOUT<...9. VOUT< VOUT< VOUT

7 RPx TYPICAL APPLICATION VIN VDD VOUT VOUT C RPx Series C CE GND (External Components) C, C : Ceramic Capacitor.7μF MURATA: GRM55BA7KE TECHNICAL NOTES When using these ICs, consider the following points: Phase Compensation In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For this purpose, use a capacitor C with.7μf or more and good ESR (Equivalent Series Resistance). (Note: If additional ceramic capacitors are connected with parallel to the output pin with an output capacitor for phase compensation, the operation might be unstable. Because of this, test these ICs with as same external components as ones to be used on the PCB.) PCB Layout The impedances of VDD line and GND line has to be low as possible. The high impedances may result in the unstable operation or a noise pickup. The output capacitor with.7µf or more should be placed between VDD and GND. The line from VDD to the output capacitor, and the line from the output capacitor to GND must be wired as short as possible. The output capacitor is placed between VOUT and GND as phase compensation. The line from VOUT to the output capacitor, and the line from the capacitor to GND must be wired as short as possible. Please refer to the Basic Test Circuit below. 7

8 RPx TEST CIRCUITS VDD VOUT C RPx Series C V VOUT IOUT CE GND Basic Test Circuit C=Ceramic.7μF C=Ceramic.7μF VDD VOUT VOUT A ISS C RPx Series C CE GND C=Ceramic.7μF C=Ceramic.7μF Test Circuit for Supply Current Pulse Generator P.G. VDD VOUT RPx Series C IOUT CE GND C=Ceramic.7μF Test Circuit for Ripple Rejection VDD VOUT VOUT C RPx Series C CE GND IOUTa IOUTb Test Circuit for Load Transient Response C=Ceramic.7μF C=Ceramic.7μF 8

9 RPx TYPICAL CHARACTERISTICS ) vs. Output Current(C=.7μF, C=.7μF, Ta=5 C) RPx8xx RPx8xx VOUT (V) V..8V.8V.8V 5.5V VOUT (V) V.8V.8V 5.5V... 5 Output Current I OUT (ma). 5 Output Current I OUT (ma) RPx8xx RPxxx VOUT (V) V.8V 5.5V VOUT (V) V 5.5V Output Current I OUT (ma) 5 Output Current I OUT (ma) ) vs. Input Voltage(C=.7μF, C=.7μF, Ta=5 C) RPx8xx RPx8xx VOUT (V) Iout=mA Iout=mA Iout=5mA VOUT (V) Iout=mA Iout=mA Iout=5mA

10 RPx RPx8xx RPxxx..5 VOUT (V) Iout=mA Iout=mA Iout=5mA VOUT (V) Iout=mA Iout=mA Iout=5mA ) Supply Current vs. Input Voltage(C=.7μF, C=.7μF, Ta=5 C) RPx8xx RPx8xx Supply Current Iss (µa) 9 Iout=mA 8 Iout=mA Supply Current Iss (µa) 9 Iout=mA 8 Iout=mA RPx8xx RPxxx Supply Current Iss (µa) Iout=mA Iout=mA Supply Current Iss (µa) Iout=mA Iout=mA 5 5

11 RPx )Supply Current vs. Output Current(C=.7µF, C=.7µF, Ta=5 ) RPx8xx RPx8xx VIN=.8V VIN=.8V Supply Current Iss (µa) 5 5.mA -> 5mA Low Pow ermode to FastMode 5mA ->.ma FastMode to Low Pow ertmode Supply Current Iss (µa) 5 5.mA -> 5mA Low Pow ermode to FastMode 5mA ->.ma FastMode to Low Pow ertmode. Output Current IOUT (ma). Output Current IOUT (ma) RPx8xx RPxxx VIN=.8V VIN=5.V Supply Current Iss (µa) 5 5.mA -> 5mA Low Pow ermode to FastMode 5mA ->.ma FastMode to Low Pow ertmode Supply Current Iss (µa) 5 5.mA -> 5mA Low Pow ermode to FastMode 5mA ->.ma FastMode to Low Pow ertmode. Output Current IOUT (ma). Output Current IOUT (ma) 5) vs. Temperature(C=.7µF, C=.7µF, IOUT=mA) RPx8xx RPx8xx (V) VIN=.8V VIN=.8V (V) Temperature ( C) Temperature ( C)

12 RPx (V) RPx8xx VIN=.8V Temperature ( C) (V) RPxxx VIN=5.V Temperature ( C) 6)Supply Current vs. Temperature(C=.7µF, C=.7µF) RPx8xx RPx8xx (Auto ECO Low Power Mode) (Auto ECO Low Power Mode) VIN=.8V, IOUT=mA VIN=.8V, IOUT=mA Supply Current (µa)..5. Supply Current (µa) Temperature( C) Temperature( C) RPx8xx RPxxx (Auto ECO Low Power Mode) (Auto ECO Low Power Mode) VIN=.8V, IOUT=mA VIN=5.V, IOUT=mA Supply Current (µa)..5. Supply Current (µa) Temperature( C) Temperature( C)

13 RPx RPx8xx RPx8xx VIN=.8V, IOUT=mA VIN=.8V, IOUT=mA Supply Current (µa) Supply Current (µa) Temperature( C) Temperature( C) RPx8xx RPxxx VIN=.8V, IOUT=mA VIN=5.V, IOUT=mA Supply Current (µa) Supply Current (µa) Temperature( C) Temperature( C) 7)Dropout Voltage vs. Output Current(C=.7µF, C=.7µF) RPx8xx.7.7 RPxxx DropOut Voltage VDIF(V) C 5 C 85 C DropOut Voltage VDIF(V) C 5 C 85 C Output Current IOUT(mA) 5 5 Output Current IOUT(mA)

14 RPx RPxxx RPx5xx.7. DropOut Voltage VDIF(V) C 5 C 85 C DropOut Voltage VDIF(V) C 5 C 85 C Output Current IOUT(mA). 5 5 Output Current IOUT(mA) RPx8xx RPxxx.. DropOut Voltage VDIF(V) C 5 C 85 C DropOut Voltage VDIF(V) C 5 C 85 C Output Current IOUT(mA). 5 5 Output Current IOUT(mA) RPx8xx RPxxx.. DropOut Voltage VDIF(V) C 5 C 85 C DropOut Voltage VDIF(V) C 5 C 85 C. 5 5 Output Current IOUT(mA). 5 5 Output Current IOUT(mA)

15 RPx. RPxxx DropOut Voltage VDIF(V) C 5 C 85 C. 5 5 Output Current IOUT(mA) 8)Dropout Voltage vs Set DropOut Voltage VDIF (V).6 ma.5 ma 5mA. ma... Set VREG (V) 9)Maximum Output Current vs. Set (C=.7µF, C=.7µF, V IN =.V) Output Current IOUT(mA) C 85 C Set VOUT (V) 5

16 RPx )Ripple Rejection vs. Input Bias Voltage(C=none, C=.7µF, Ripple=.Vp-p, Ta=5 C) RPx8xx RPx8xx (Auto ECO Low Power Mode) (Auto ECO Low Power Mode) Ripple Rejection RR(dB) IOUT=mA.kHz khz khz khz Ripple Rejection RR(dB) IOUT=mA.kHz khz khz khz Ripple Rejection RR(dB) Ripple Rejection RR(dB) RPx8xx (Auto ECO Low Power Mode) IOUT=mA RPx8xx.kHz khz khz khz IOUT=mA.kHz khz khz khz Ripple Rejection RR(dB) Ripple Rejection RR(dB) RPxxx (Auto ECO Low Power Mode) IOUT=mA.kHz khz khz khz RPx8xx IOUT=mA.kHz khz khz khz

17 RPx Ripple Rejection RR(dB) RPx8xx IOUT=mA.kHz khz khz khz Ripple Rejection RR(dB) RPxxx IOUT=mA.kHz khz khz khz )Ripple Rejection vs. Frequency(C=none, C=.7µF, Ripple=.Vp-p, Ta=5 C) Ripple Rejection (db) RPx8xx VIN=.8V+.Vp-p ma ma 5mA ma ma. Frequency [khz] Ripple Rejection (db) RPx8xx VIN=.8V+.Vp-p ma ma 5mA ma ma. Frequency [khz] Ripple Rejection (db) RPx8xx VIN=.8V+.Vp-p ma ma 5mA ma ma. Frequency [khz] Ripple Rejection (db) RPxxx VIN=5.V+.Vp-p ma ma 5mA ma ma. Frequency [khz] 7

18 RPx )Input Transient Response(C=none, C=.7µF, tr=tf=5μs, Ta=5 C) RPx8xx RPx8xx (Auto ECO Low Power Mode) (Auto ECO Low Power Mode) VOUT (V) VIN=.8V.8V, IOUT=mA Input Voltage Time t (ms) Input Voltage VIN (V) VOUT (V) Input Voltage VIN=.8V.8V, IOUT=mA Time t(ms) 5 Input Voltage VIN (V) VOUT (V) RPx8xx (Auto ECO Low Power Mode) Input Voltage VIN=.8V.8V, IOUT=mA Time t(ms) 6 5 Input Voltage VIN (V) VOUT (V) RPxxx (Auto ECO Low Power Mode) Input Voltage VIN=5.V 5.5V, IOUT=mA Time t(ms) 6 5 Input Voltage VIN (V) VOUT (V) RPx8xx VIN=.8V.8V, IOUT=mA Input Voltage Time t (ms) Input Voltage VIN (V) VOUT (V) RPx8xx VIN=.8V.8V, IOUT=mA Input Voltage Time t(ms) 5 Input Voltage VIN (V) 8

19 RPx VOUT (V) RPx8xx VIN=.8V.8V, IOUT=mA Input Voltage Time t(ms) Input Voltage VIN (V) VOUT (V) RPxxx VIN=5.V 5.5V, IOUT=mA Input Voltage Time t(ms) 6 5 Input Voltage VIN (V) )Load Transient Response(C=.7µF, C=.7µF, tr=tf=.5µs, Ta=5 C) VOUT (V) RPx8xx (Auto ECOLow Power Mode FAST Mode) VIN=.8V Output Current ma Time (ms) Output Current IOUT (ma) VOUT (V) RPx8xx (Auto ECOLow Power Mode FAST Mode) VIN=.8V Output Current ma Time (ms) Output Current IOUT (ma) VOUT (V) RPx8xx (Auto ECO Low Power Mode FAST Mode) VIN=.8V Output Current ma - Time (ms) Output Current IOUT (ma) VOUT (V) RPxxx (Auto ECO Low Power Mode FAST Mode) VIN=5.V Output Current ma Time (ms) Output Current IOUT (ma) 9

20 RPx RPx8xx VIN=.8V RPx8xx VIN=.8V VOUT (V) Output Current 5 ma Output Current IOUT (ma) VOUT (V) Output Current 5 ma Output CUrrent IOUT (ma) Time (μs) Time (μs) RPx8xx VIN=.8V RPxxx VIN=5.V VOUT (V) Output Current 5 ma Output CUrrent IOUT (ma) VOUT (V) Output Current 5 ma Output Current IOUT(mA) Time (μs) Time (μs) RPx8xx (Auto ECOLow Power Mode FAST Mode) VIN=.8V. RPx8xx (Auto ECO Low Power Mode FAST Mode) VIN=.8V. VOUT (V) Output Current. ma Output Current IOUT (ma) VOUT (V) Output Current. ma Output Current IOUT (ma) Time (ms) Time (ms)

21 RPx RPx8xx (Auto ECO Low Power Mode FAST Mode) VIN=.8V. RPxxx (Auto ECO Low Power Mode FAST Mode) VIN=5.V. VOUT (V) Output Current. ma Output Current IOUT(mA) VOUT (V) Output Current. ma Output Current IOUT (ma) Time (ms) Time (ms) )Turn On Waveform () with CE pin(c=.7µf, Ta=5 C) Input Voltage (V) RPx8xx VIN=.8V, IOUT=mA C=μF C=.μF C=.7μF C=μF C=.7μF (V) Input Voltage (V) RPx8xx VIN=.8V, IOUT=mA C=μF C=.μF C=.7μF C=μF C=.7μF (V) RPx8xx VIN=.8V, IOUT=mA RPxxx VIN=5.V, IOUT=mA Input Voltage (V) C=μF C=.μF C=.7μF C=μF C=.7μF.5.8. (V) Input Voltage (V) C=μF C=.μF C=.7μF C=μF C=.7μF.. (V)

22 RPx 5)Turn On Input Waveform (Input Current) with CE pin(c=.7µf, Ta=5 C) RPx8xx RPx8xx Input Voltage (V) Rush Current VIN=.8V, IOUT=mA C=μF C=.μF C=.7μF C=μF C=.7μF Rush Current (ma) Input Voltage (V) Rush Current VIN=.8V, IOUT=mA C=μF C=.μF C=.7μF C=μF C=.7μF Rush Current (ma) Input Voltage (V) Rush Current RPx8xx VIN=.8V, IOUT=mA C=μF C=.μF C=.7μF C=μF C=.7μF Rush Current (ma) Input Voltage (V) Rush Current RPxxx VIN=5.V, IOUT=mA C=μF C=.μF C=.7μF C=μF C=.7μF Rush Current (ma) 6)Turn On Speed with CE pin (D Version)(C=.7µF, C=.7µF, Ta=5 C) RPx8xx RPx8xx VIN=.8V VIN=.8V (V) IOUT=mA IOUT=5mA (V) (V) IOUT=mA IOUT=5mA (V)

23 RPx RPx8xx RPxxx VIN=.8V VIN=5.V 6 I (V) IOUT=mA IOUT=5mA - - (V) (V) IOUT=mA IOUT=5mA (V) )Turn Off Speed with CE pin (D Version)(C=.7µF, C=.7µF, Ta=5 C) RPx8xx RPx8xx VIN=.8V VIN=.8V (V) IOUT=mA IOUT=mA IOUT=5mA (V) (V) IOUT=mA IOUT=mA IOUT=5mA (V) (V) RPx8xx VIN=.8V IOUT=mA IOUT=mA IOUT=5mA (V) (V) 5 RPxxx VIN=5.V IOUT=mA IOUT=mA IOUT=5mA (V)

24 RPx ESR vs. Output Current When using these ICs, consider the following points: The relations between IOUT (Output Current) and ESR of an output capacitor are shown below. The conditions when the white noise level is under μv (Avg.) are marked as the hatched area in the graph. Measurement conditions Frequency Band : Hz to MHz Temperature : C to 85 C C, C :.7µF RPx8xx RPx8xx Ta=85 C Ta=85 C ESR (Ω) Ta=- C ESR (Ω) Ta=- C Output Current (ma) Output Current (ma) RPx8xx RPxxx Ta=85 C Ta=85 C ESR (Ω) Ta=- C ESR (Ω) Ta=- C Output Current (ma). 5 5 Output Current (ma)

25 Ricoh presented with the Japan Management Quality Award for 999. Ricoh continually strives to promote customer satisfaction, and shares the achievements of its management quality improvement program with people and society. Ricoh awarded ISO certification. The Ricoh Group was awarded ISO certification, which is an international standard for environmental management systems, at both its domestic and overseas production facilities. Our current aim is to obtain ISO certification for all of our business offices. Ricoh completed the organization of the Lead-free production for all of our products. After Apr., 6, we will ship out the lead free products only. Thus, all products that will be shipped from now on comply with RoHS Directive.

Low Power / Fast Mode Alternative 200mA LDO Regulator

RPx SERIES Low Power / Fast Mode Alternative ma LDO Regulator OUTLINE NO.EA-79-77 The RPx is voltage regulator IC with high output voltage accuracy, low dropout voltage and low supply current. This IC