0.6% ACCURACY LOW NOISE 200mA LDO REGULATOR

Transcription

1 RPx SERIES.% ACCURACY LOW NOISE ma LDO REGULATOR OUTLINE NO.EA-- The RPx Series are CMOS-based voltage regulator ICs with high output voltage accuracy, extremely low supply current, low ON-resistance, and high ripple rejection. Each of these ICs consists of a voltage reference unit, an error amplifier, resistor-net for voltage setting, a current limit circuit and a chip enable circuit. These ICs perform with low dropout voltage and a chip enable function. The line transient response and load transient response of the RPx Series are excellent, thus these ICs are very suitable for the power supply for hand-held communication equipment. The output voltage of these ICs is fixed with high accuracy. Since the packages for these ICs are SOT--5 and DFN(PLP)-, therefore high density mounting of the ICs on boards is possible. FEATURES Supply Current...Typ. 8μA Standby Current...Typ..μA Dropout Voltage...Typ..V (IOUT=5mA, VOUT=.8V) Ripple Rejection...Typ. 75dB (f=khz) Temperature-Drift Coefficient of...typ. ±ppm/ C Line Regulation...Typ..%/V Accuracy...±.% Packages...DFN(PLP)-, SOT--5 Input Voltage Range...7V to 5.5V Range...V to.v (.V steps) (For other voltages, please refer to MARK INFORMATIONS.) Built-in Fold Back Protection Circuit...Typ. ma (Current at short mode) Ceramic capacitors are recommended to be used with this IC...μF 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 RPxxxB RPxxxD VDD VOUT VDD VOUT Vref Current Limit Vref Current Limit CE GND CE GND SELECTION GUIDE The output voltage, auto discharge function, package, and the taping type, etc. 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)- 5, pcs Yes Yes RPNxx -TR-FE SOT--5, pcs Yes Yes xx : The output voltage can be designated in the range from.v() to.v() in.v steps. (For other voltages, please refer to MARK INFORMATIONS.) : CE pin polarity and auto discharge function at off state are options as follows. (B) "H" active, without auto discharge function at off state (D) "H" active, with auto discharge function at off state

3 RPx PIN CONFIGURATIONS DFN(PLP)- Top View Bottom View SOT--5 5 (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. 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. V V (CE Pin). V VOUT. to VIN+. V IOUT Output Current ma PD Power Dissipation (SOT--5) Power Dissipation (DFN(PLP)-) Topt 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. mw

5 RPx ELECTRICAL CHARACTERISTICS RPxxxB/D VIN=Set VOUT+V, IOUT=mA, CIN=COUT =μf, unless otherwise noted. Topt=5 C Symbol Item Conditions Min. Typ. Max. Unit VOUT >.V.99. V VOUT VOUT.V + mv IOUT Output Current ma ΔVOUT/ΔIOUT Load Regulation ma IOUT 5mA mv VDIF Dropout Voltage IOUT=5mA.V VOUT <.5V..5.5V VOUT <.7V..8.7V VOUT <.V...V VOUT <.5V.7..5V VOUT <.8V..5.8V VOUT.V.. ISS Supply Current IOUT=mA 8 5 μa Istandby Standby Current VCE=V.. μa ΔVOUT/ΔVIN Line Regulation Set VOUT+.5V VIN 5.V.. %/V RR Ripple Rejection f=khz, Ripple.Vp-p VIN=Set VOUT+V, IOUT=mA (In case that VOUT.V, VIN=V) V 75 db VIN Input Voltage V ΔVOUT/ΔTopt Temperature Coefficient C Topt 85 C ± ISC Short Current Limit VOUT=V ma IPD CE Pull-down Current. μa VCEH "H". V VCEL "L". V en RLOW Output Noise Low Output Nch Tr. ON Resistance (of D version) BW=Hz to khz IOUT=mA ppm / C μvrms VIN=.V, VCE=V Ω ) The maximum Input Voltage of the ELECTRICAL CHARACTERISTICS is 5.5V. In case of exceeding this specification, the IC must be operated on condition that the Input Voltage is up to 5.5V and the total operating time is within 5hrs. 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

6 RPx TYPICAL APPLICATION VDD VOUT VOUT C RPx Series C CE GND (External Components) C.μF MURATA: GRM55BA5KE5 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 good frequency characteristics and ESR (Equivalent Series Resistance). Ceramic capacitors have different temperature characteristics and bias characteristics depending on their dimensions and manufacturers. If the setting voltage is.5v or more and the capacitor s dimensions for V OUT equal to.mm by.5mm or smaller than that, the capacitance value might be extremely low. As a result, the capacitance might be much less than expected value. In such cases, the operation might be unstable at low temperature. ( C or less) In that case, use a larger capacity, or a large dimensions capacitor. (For example.mm by.8mm) If a tantalum capacitor is selected as an output capacitor, large ESR may be a cause of unstable operation. Evaluate the operation of PCB with considerable frequency characteristics. PCB Layout Make VDD and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result. Connect a capacitor C with a capacitance value as much as.μf or more between VDD and GND pin, and as close as possible to the pins. Set external components, especially the output capacitor C, as close as possible to the ICs, and make wiring as short as possible.

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

8 RPx TYPICAL CHARACTERISTICS ) vs. Output Current (C=.μF, C=.μF, Topt=5 C) RPxx RPx5x VIN=.V VIN=.V VIN=.V VIN=5.V VIN=5.5V VIN=.5V.5 VIN=.V VIN=5.V. VIN=5.5V RPxx VIN=.V VIN=5.V VIN=5.5V ) vs. Input Voltage (C=.μF, C=.μF, Topt=5 C) RPxx RPxx IOUT=mA IOUT=mA IOUT=5mA IOUT=mA IOUT=mA IOUT=5mA 5 Input Voltage VIN (V) 5 Input Voltage VIN (V) 8

9 RPx RPxx IOUT=mA IOUT=mA IOUT=5mA 5 Input Voltage VIN (V) ) Supply Current vs. Input Voltage (C=.μF, C=.μF, Topt=5 C) RPxx RPx5x 5 5 Supply Current ISS (μa) Supply Current ISS (μa) Input Voltage VIN (V) 5 Input Voltage VIN (V) RPxx 5 Supply Current ISS (μa) Input Voltage VIN (V) 9

10 RPx ) vs. Temperature (C=.μF, C=.μF, IOUT=mA) RPxx RPx5x VIN=.V Temperature Topt ( C) VIN=.5V Temperature Topt ( C) RPxx VIN=.V Temperature Topt ( C) 5) Supply Current vs. Temperature (C=.μF, C=.μF, IOUT=mA) RPxx RPx5x VIN=.V VIN=.5V Supply Current ISS (μa) Supply Current ISS (μa) Temperature Topt ( C) Temperature Topt ( C)

11 RPx RPxx VIN=.V Supply Current ISS (μa) Temperature Topt ( C) ) Dropout Voltage vs. Output Current (C=.μF,C=.μF) RPxx Dropout Voltage VDIF (mv) C 5 C - C 5 5 Dropout Voltage VDIF (mv) RPx5x 85 C 5 C - C 5 5 RPx7x RPxx 5 Dropout Voltage VDIF (mv) C 5 C - C Dropout Voltage VDIF (mv) C 5 C - C

12 RPx RPx5x RPx8x 5 5 Dropout Voltage VDIF (mv) C 5 C - C Dropout Voltage VDIF (mv) C 5 C - C RPxx Dropout Voltage VDIF (mv) C 5 C - C 5 5 7) Dropout Voltage vs Set (C=.μF, C=.μF, Topt=5 C) Dropout voltage VDIF (mv) 5 ma ma ma 5mA ma Set VREG (V)

13 RPx 8) Ripple Rejection vs. Input Bias Voltage (C=none, C=.μF, Ripple=.Vp-p, Topt=5 C) RPxx RPxx Ripple Rejection RR (db) IOUT=mA khz khz khz Input Voltage VIN (V) Ripple Rejection RR (db) IOUT=mA khz khz khz Input Voltage VIN (V) RPx8x RPx8x Ripple Rejection RR (db) C=none IOUT=mA khz khz khz Input Voltage VIN (V) Ripple Rejection RR (db) C=none IOUT=mA khz khz khz Input Voltage VIN (V) 9) Ripple Rejection vs. Frequency (C=none, C=.μF, Ripple=.Vp-p) RPxx RPxx Ripple Reiection RR (db) 8 VIN=.V IOUT=mA IOUT=mA IOUT=5mA Ripple Reiection RR (db) 8 VIN=.5V IOUT=mA IOUT=mA IOUT=5mA. Frequency f (khz). Frequency f (khz)

14 RPx RPxx Ripple Reiection RR (db) 8 VIN=.V IOUT=mA IOUT=mA IOUT=5mA. Frequency f (khz) RPxx RPx5x Ripple Reiection RR (db) 8 VIN=.V - C 5 C 85 C Ripple Reiection RR (db) 8 VIN=.5V - C 5 C 85 C. Frequency f (khz). Frequency f (khz) RPxx Ripple Reiection RR (db) 8 VIN=.V - C 5 C 85 C. Frequency f (khz)

15 RPx ) Input Transient Response (IOUT=mA, tr=tf=5μs, Topt=5 C) RPxx RPx5x Input Voltage Input Voltage VIN(V) Input Voltage Input Voltage VIN(V) RPxx 5 Input Voltage Input Voltage VIN(V) ) Load Transient Response (C=.μF, Topt=5 C) RPxx Output Current 5mA VIN=.V tr=tf=.5μs ma Output Current RPx5x 5mA VIN=.5V tr=tf=.5μs ma

16 RPx Output Current RPxx 5mA VIN=.V tr=tf=.5μs ma RPxx VIN=.V tr=tf=.5μs 5 Output Current 5 ma 5mA RPx5x Output Current ma 5mA VIN=.5V tr=tf=.5μs RPxx VIN=.V tr=tf=.5μs 5 Output Current 5 ma 5mA RPxx Output Current ma 5mA VIN=.V tr=tf=5μs RPx5x Output Current ma 5mA VIN=.5V tr=tf=5μs

17 RPx RPxx VIN=.V tr=tf=5μs 5 Output Current ma 5mA ) Turn On Speed with CE pin (C=.μF, C=.μF, Topt=5 C) RPxx RPxx IOUT=mA IOUT=mA 8 8 RPxx IOUT=5mA 8 7

18 RPx RPx5x RPx5x IOUT=mA IOUT=mA 8 8 RPx5x RPx5x IOUT=mA IOUT=5mA 8 8 RPxx RPxx IOUT=mA IOUT=5mA 8 8 8

19 RPx ) Turn Off Speed with CE pin (D Version) (C=.μF, C=.μF, Topt=5 C) RPxD RPxD IOUT=mA IOUT=mA RPxD RPxD IOUT=mA IOUT=5mA RPx5D RPx5D IOUT=mA IOUT=mA

20 RPx RPx5D RPx5D IOUT=mA IOUT=5mA RPxD RPxD IOUT=mA IOUT=mA RPxD RPxDx IOUT=mA IOUT=5mA

21 RPx ) Dropout Voltage vs Temperature (C=.μF, C=.μF) RPxx Dropout Voltage VDIF (mv) mA 5 ma 5mA Temperature Topt ( C) Dropout Voltage VDIF (mv) RPx5x 8 8 5mA ma 5mA Temperature Topt ( C) Dropout Voltage VDIF (mv) RPxx 8 5mA ma 5mA Temperature Topt ( C) Dropout Voltage VDIF (mv) RPxx 8 5mA ma 5mA Temperature Topt ( C) 5) vs. Input Voltage (C=.μF, C=.μF)...8. IOUT=mA. IOUT=mA IOUT=5mA. IOUT=mA IOUT=5mA Input Voltage VIN (V)

22 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 RPxx RPx5x VIN=.7V to 5.5V C=C=.μF VIN=.5V to 5.5V C=C=.μF Topt=-/5/85 C Topt=-/5/85 C ESR (Ω) ESR (Ω) RPxx VIN=.V to 5.5V C=C=.μF Topt=-/5/85 C ESR (Ω).. 5 5

23 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.,, we will ship out the lead free products only. Thus, all products that will be shipped from now on comply with RoHS Directive.