RN5RK271B-TR-FE

RN5RK SERIES VFM STEP-UP DC/DC CONVERTER NO.EA-045-181012 OUTLINE The RN5RKxx1A/xx1B/xx2A Series are CMOS-based VFM (Chopper) Step-up DC/DC converter ICs with ultra low supply current and high output voltage accuracy. Each of the RN5RKxx1A/xx1B consists of an oscillator, a VFM control circuit, a driver transistor to have low ON resistance (Lx switch), a reference voltage unit, a high speed comparator, resistors for voltage detection, an Lx switch protection circuit and an internal chip enable circuit. A low ripple, high efficiency step-up DC/DC converter can be composed of this RN5RKxx1A/xx1B with only three external components: an inductor, a diode and a capacitor. The RN5RKxx2A uses the same chip as what is employed in the RN5RKxx1A/1B IC and has a drive pin (EXT) for an external transistor instead of an Lx pin. As it is possible to load a large output current with a power transistor which has a low saturation voltage, RN5RKxx2A IC is recommendable to users who need an output current as large as between several tens mA and several hundreds mA. Using the chip enable function, it is possible to make the supply current on standby minimized. Since the package for these ICs is SOT-23-5, high density mounting of the ICs on board is possible. FEATURES  Small Number of External Components .............................. Only an inductor, a diode and a capacitor (RN5RKxx1A/xx1B)  Standby Current ................................................................... Typ. 0A  Low Temperature-Drift Coefficient of Output Voltage........... Typ. 100ppm/C  Output Voltage Range .......................................................... 2.0V to 5.5V  Two Kinds of Duty Ratio....................................................... 77% (xx1A, xx2A)/ 55% (xx1B)  High Output Voltage Accuracy ............................................. 2.5%  Small Packages ................................................................. SOT-23-5  High Efficiency ..................................................................... Typ. 85% (RN5RK301B, VIN=2V, IOUT=10mA)  Low Ripple and Low Noise  Including a Driver Transistor with Low ON Resistance ........ Only RN5RKxx1A/xx1B  Low Start-up Voltage ............................................................ Max.0.9V APPLICATIONS  Power source for battery-powered equipment.  Power source for cameras, camcorders, VCRs, and hand-held communication equipment.  Power source for those appliances which require higher cell voltage than that of batteries. 1 RN5RK NO.EA-045-181012 OUTLINE DIAGRAM RN5RKxx1x RN5RKxx2A Vref Lx 5 VLX limiter 2 VOUT Buffer LxSW Vref EXT 5 2 VOUT Buffer － VFM Control VFM Control ＋ OSC 100kHz － ＋ OSC 100kHz Error Amp. Error Amp. Chip Enable Chip Enable 4 GND 1 4 GND 1 CE CE SELECTION GUIDE The output voltage, the driver type and the duty cycle for the ICs can be selected at the user's request. Product Name RN5RKxx$-TR-FE Package Quantity per Reel Pb Free Halogen Free SOT-23-5 3,000 pcs ○ ○ xx：The output voltage can be designed in the range from 2.0V(20) to 5.5V(55) in 0.1V steps. ：Designation of Driver （1）Internal Lx Tr. Driver （2）External Tr. Driver $：Designation of Duty Cycle （A）77％ （B）55％  2 RN5RK NO.EA-045-181012 PIN CONFIGURATIONS  SOT-23-5 5 4 (mark side) 1 2 3 PIN DISCRIPTION   RN5RKxx1x Pin No. Symbol 1 CE 2 Description RN5RKxx2A Pin No. Symbol Description Chip Enable Pin 1 CE Chip Enable Pin VOUT Step-up Output Monitoring Pin, Power Supply (for device itself) 2 VOUT Step-up Output Monitoring Pin, Power Supply (for device itself) 3 NC No Connection 3 NC No Connection 4 GND Ground Pin 4 GND Ground Pin 5 LX Switching Pin (Nch Open Drain) 5 EXT External Tr. Drive Pin (CMOS Output) 3 RN5RK NO.EA-045-181012 ABSOLUTE MAXIMUM RATINGS  RN5RKxx1x Symbol  Item Rating Unit VOUT Step-up Output Pin Voltage –0.3 to 9.0 V VLX Lx Pin Voltage –0.3 to 9.0 V VCE CE Pin Voltage –0.3 to VOUT+0.3 V ILX Lx Pin Output Current 500 mA PD Power Dissipation (SOT-23-5)* 420 mW Topt Operating Temperature Range –40 to 85 C Tstg Storage Temperature Range –55 to 125 C Rating Unit –0.3 to 9.0 V RN5RKxx2A Symbol Item VOUT Step-up Output Pin Voltage VEXT EXT Pin Voltage –0.3 to VOUT+0.3 V VCE CE Pin Voltage –0.3 to VOUT+0.3 V IEXT EXT Pin Output Current 30 mA PD Power Dissipation (SOT-23-5)*1 420 mW Topt Operating Temperature Range –40 to 85 C Tstg Storage Temperature Range –55 to 125 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. 4 RN5RK NO.EA-045-181012 ELECTRICAL CHARACTERISTICS  RN5RKxx1A/xx1B Symbol VOUT VIN Topt25C Item Conditions VINSet VOUT0.6, IOUT=1mA Output Voltage Min. Typ. 0.975 Input Voltage VOUT/ Topt Output Voltage Temperature Coefficient 40C Vstart Start-Up Voltage VIN=0V2V*1   Topt   85C Max. Unit 1.025 V 8.0 V ppm /C 100 0.75   Topt   85°C 0.90 V Vstart/ Topt Start-Up Voltage Temperature Coefficient -40°C VIN=0V2V*1 Vhold Hold-on Voltage (xx1A) VIN=2V0V*1 0.7 V Vhold Hold-on Voltage (xx1B) VIN=2V0V* 1 0.9 V IDD2 Supply Current2 VOUTVCE=Set VOUT+0.5V Istandby Standby Current VOUT6V, VCE=0V ILXleak Lx Leakage Current VOUTVLX=8V fosc Maximum Oscillator Frequency VOUTVCE=Set VOUT0.96 Frequency Temperature Coefficient -40°C fosc/ Topt Maxduty 2 80  Topt   85°C  Oscillator Duty Cycle (xx1A) VOUTVCESet VOUT0.96, Oscillator Duty Cycle (xx1B) ON (VLX "L" side) 0.5 A 1 A 120 kHz kHz/ C 77 85  47 55 63  0.6 0.8 V VOUTVCE=1.95V, Lx Switch ON 0.4 VCEH CE "H" Input Voltage 0.9 VCEL CE "L" Input Voltage VOUTVCE=Set VOUT0.96, Judgment is made by the Lx waveform ICEH CE "H" Input Current VOUT6.0V, VCE6.0V -0.5 ICEL CE "L" Input Current VOUT6.0V, VCE0V -0.5 Supply Current1 * A 70 VLX Voltage Limit IDD1 100 5 0.41 VLXlim 2 mV/ C -1.6 V 0.3 V 0 0.5 A 0 0.5 A VOUT   2.4V 25 50 A   Set VOUT   2.9V 30 55 3.0V   Set VOUT   3.4V 35 60 3.5V   Set VOUT   3.9V 40 65 4.0V   Set VOUT   4.4V 45 75 4.5V  Set  VOUT  4.9V  50 80 5.0V   Set VOUT   5.5V 55 90 2.0V   Set 2.5V A 5 RN5RK NO.EA-045-181012 Symbol ILX Item Lx Switching Current Conditions Min. 2.0V   Set VOUT   2.4V, VLX0.4V 80 2.5V   Set VOUT   2.9V, VLX0.4V 100 3.0V   Set VOUT   3.4V, VLX0.4V 120 3.5V   Set VOUT   3.9V, VLX0.4V 140 4.0V   Set VOUT   4.4V, VLX0.4V 160 4.5V   Set VOUT   4.9V, VLX0.4V 180 5.0V  Set  VOUT  5.5V,  VLX0.4V 200 Typ. Max. Unit mA *1)Condition: An Output load resistor RL is connected between VOUT and GND. Note that the resistor RL has a resistance which makes an output current 1mA after step-up operation. *2)The Supply Current 1 (IDD1) for IC itself is measured when the internal oscillator works continuously. If the oscillator works intermittently, the supply current becomes smaller than the value which is written on the above table. 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. 6 RN5RK NO.EA-045-181012  RN5RKxx2A Symbol VOUT VIN Topt25C Item Output Voltage Conditions VOUTVCE=0V6V, Judgment is made by the EXT waveform Output Voltage Temperature Coefficient 40C Vstart Start-Up Voltage VOUTVCE=0V2V IDD2 Supply Current2 VOUTVCE=Set VOUT+0.5V Istandby Standby Current VOUT6V, VCE=0V Maximum Oscillator Frequency VOUTVCESet VOUT0.96 Frequency Temperature Coefficient -40°C Duty Oscillator Duty Cycle VOUTVCE=Set VOUT0.96, ON (VLX “H” side) VCEH CE “H” Input Voltage VCEL fosc/ Topt 0.975   Topt   85C 80   Topt   85°C 70 CE “L” Input Voltage ICEH CE “H” Input Current VOUT6.0V, VCE6.0V -0.5 ICEL CE “L” Input Current VOUT6.0V, VCE0V -0.5 IEXTH IEXTL EXT “H” Output Current EXT “L” Output Current Unit 1.025 V 8.0 V ppm /C 0.7 0.8 V 2 5 A 0.5 A 120 kHz 100 kHz /C 0.41 0.9 Supply Current1 *1 Max. 100 VOUTVCE=Set VOUT0.96, Judgment is made by the EXT waveform IDD1 Typ. Input Voltage VOUT/ Topt fosc Min. 77 85 % V 0.3 V 0 0.5 A 0 0.5 A A 2.0V   VOUT   2.9V, EXT no load 20 40 3.0V   VOUT   3.9V, EXT no load 25 50 3.0V  VOUT   3.4V,  EXT no load 30 60 3.5V   VOUT   3.9V, EXT no load 35 70 2.0V  VOUT   2.4V,  EXT no load -1.0 2.5V   VOUT   2.9V, EXT no load -1.5 4.0V   VOUT   5.5V, EXT no load -2.0 2.0V   VOUT   2.9V, EXT no load 1.0 3.0V   VOUT   3.9V, EXT no load 1.5 4.0V   VOUT   5.5V, EXT no load 2.0 A mA *1) The Supply Current 1 (IDD1) for IC itself is measured when the internal oscillator works continuously. If the oscillator works intermittently, the supply current becomes smaller than the value which is written on the above table. 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. 7 RN5RK NO.EA-045-181012 TYPICAL APPLICATIONS AND TECHNICAL NOTES RN5RKxx1x RN5RKxx2A SD L VIN LX SD L VOUT CL GND CE L : 100Ｈ (Sumida, CD54NP) SD : MA721 (Matsushita Electronics, Schottky Type) CL : 47F (Tantalum Type) VIN L SD CL1 CL2 Tr Rb Cb Tr Rb EXT VOUT GND CE CL1 CL2 Cb : 27H : RB111C : 47F : 47F : 2SD1628G : 300 : 0.01F (Sumida, CD105NP) (Rohm, Schottky Type) (Tantalum Type) (Tantalum Type) When you use these ICs, consider the following issues; Set external components as close as possible to the IC and minimize the connection between the components and the IC. In particular, a capacitor should be connected to VOUT pin with the minimum connection. Make sufficient grounding. A large current flows through GND pin by switching. When the impedance of the GND connection is high, the potential within the IC is varied by the switching current. This may result in unstable operation of the IC. Use capacitors with a capacity of 22F or more, and with good high frequency characteristics such as tantalum capacitors. We recommend you to use output capacitors with an allowable voltage at least 3 times as much as setting output voltage. This is because there may be a case where a spike-shaped high voltage is generated by an inductor when an Lx transistor is off. Choose an inductor that has sufficiently small D.C. resistance and large allowable current and is hard to reach magnetic saturation. And if the value of inductance of an inductor is extremely small, the ILX may exceed the absolute maximum rating at the maximum loading. Use an inductor with appropriate inductance. Use a diode of a Schottky type with high switching speed, and also pay attention to its current capacity. The performance of power circuit with using this IC depends on external components. Choose the most suitable components for your application. 8 RN5RK NO.EA-045-181012 TEST CIRCUITS SBD L 1kΩ Lx VOUT Lx VOUT V RL VIN A CL GND CE GND Test Circuit 1 Lx CE CL Test Circuit 2 VOUT GND CE CL Oscilloscope Test Circuit 3 *)When VLXlim and ILX are measured, the 5resistor is used. Otherwise 1kis used. Components Inductor Diode Capacitor (L) : 100H, 220H (Sumida Electric Co., Ltd; CD-54) (SBD) : MA721 (Matsushita Electronics Corporation; Schottky Type) (CL) : 47F (Tantalum Type) Using these test circuits characteristics data has been obtained as shown on the following pages. Test Circuit 1: Typical Characteristics (1)-(7) Test Circuit 2: Typical Characteristics (9)-(11) Test Circuit 3: Typical Characteristics (8), (12)-(16) 9 RN5RK NO.EA-045-181012 SBD L Tr Rb EXT VOUT EXT VOUT V VIN A CL Cb GND CE CE GND Test Circuit 1 CL Test Circuit 2 100Ω EXT EXT VOUT GND CE VOUT Oscilloscope GND CE CL Oscilloscope Test Circuit 3 Components Inductor Diode Capacitor Transistor Base Resistor (L) (SBD) (CL) (Tr) (Rb) Test Circuit 4 : 27H (Sumida Electric Co., Ltd; CD-104) : RB111C (Rohm Co., Ltd; Schottky Type) : 47F2(Tantalum Type) : 2SD1628G : 300W Base Capacitor (Cb): 0.01F The typical characteristics were obtained with using these test circuits. Test Circuit 1: Typical Characteristics (1)-(5) Test Circuit 2: Typical Characteristics (8)-(10) Test Circuit 3: Typical Characteristics (11)-(14) Test Circuit 4: Typical Characteristics (6), (7) 10 CL RN5RK NO.EA-045-181012 TYPICAL CHARACTERISTICS Output Voltage vs. Output Current (Topt=25°C) RN5RK301A RN5RK301A L=100μH 3.0 2.0V 2.5 1.0V 1.3V 2.0 VIN=0.9V 1.5 1.5V 1.0 0.5 L=220μH 3.5 Output Voltage VOUT(V) Output Voltage VOUT(V) 3.5 0.0 3.0 2.5 1.0V 1.5V VIN=0.9V 1.3V 2.0V 2.0 1.5 1.0 0.5 0.0 0 20 40 60 80 100 120 140 160 0 20 40 Output Current IOUT(mA) 3.0 2.0V 1.3V 1.5V VIN=1.0V 100 120 140 160 1.5 1.0 0.5 L=220μH 3.5 Output Voltage VOUT(V) 3.5 2.0 80 RN5RK301B L=100μH 2.5 60 Output Current IOUT(mA) RN5RK301B Output Voltage VOUT(V) 0.0 3.0 2.5 2.0 2.0V 1.5V 1.3V VIN=1.0V 1.5 1.0 0.5 0.0 0 10 20 30 40 50 0 Output Current IOUT(mA) 10 RN5RK501A 30 40 50 RN5RK501A L=100μH 6 2.0V 3.0V 1.5V VIN=0.9V 3 2 1 0 L=220μH 6 4.0V 5 4 20 Output Current IOUT(mA) Output Voltage VOUT(V) 1) RN5RKxx1A/B Output Voltage VOUT(V)  4.0V 5 4 1.5V 2.0V 3.0V VIN=0.9V 3 2 1 0 0 50 100 150 Output Current IOUT(mA) 200 0 50 100 150 200 Output Current IOUT(mA) 11 RN5RK NO.EA-045-181012 RN5RK501B RN5RK501B L=100μH 4.0V 5 2.5V 4 3.0V 2.0V 3 VIN=1.5V 2 1 L=220μH 6 Output Voltage VOUT(V) Output Voltage VOUT(V) 6 0 4.0V 5 2.5V VIN=1.5V 3 2 1 0 0 50 100 150 200 0 50 Output Current IOUT(mA) 2) 3.0V 2.0V 4 150 200 Efficiency vs. Output Current (Topt25°C) RN5RK301A RN5RK301A L=100μH 100 90 80 70 2.0V 60 1.0V Efficiency η(%) Efficiency η(%) L=220μH 100 90 80 70 60 1.5V 50 VIN=0.9V 1.3V VIN=0.9V 40 0 20 40 60 80 100 120 140 160 0 Output Current IOUT(mA) 60 80 100 120 140 160 RN5RK301B L=100μH L=220μH 100 90 90 Efficiency η(%) Efficiency η(%) 1.3V 40 Output Current IOUT(mA) RN5RK301B 100 20 2.0V 1.5V 1.0V 50 40 80 2.0V 1.3V 1.5V VIN=1.0V 70 60 80 1.3V 1.5V 2.0V 70 VIN=1.0V 60 50 50 40 0 10 20 30 40 Output Current IOUT(mA) 12 100 Output Current IOUT(mA) 50 0 10 20 30 40 Output Current IOUT(mA) 50 RN5RK NO.EA-045-181012 RN5RK501A RN5RK501A L=100μH 100 L=220μH 100 90 90 80 2.0V 3.0V 70 1.5V VIN=0.9V 60 Efficiency η(%) Efficiency η(%) 4.0V 4.0V 80 70 3.0V 1.5V 60 VIN=0.9V 50 50 40 40 2.0V 0 50 100 150 200 0 50 Output Current IOUT(mA) RN5RK501B 100 2.0V 2.5V 3.0V 70 VIN=1.5V 60 90 Efficiency η(%) Efficiency η(%) 200 L=220μH 100 4.0V 90 50 80 2.0V 4.0V 2.5V 70 3.0V VIN=1.5V 60 50 40 40 0 50 100 150 200 0 50 Output Current IOUT(mA) 100 150 200 Output Current IOUT(mA) Ripple Voltage vs. Output Current (Topt25°C) RN5RK301A RN5RK301A L=100 μH 140 100 1.3V 2.0V 80 60 40 1.0V 20 VIN=0.9V Ripple Voltage Vr(mVp-p) 120 L=220μH 160 1.5V Ripple Voltage Vr(mVp-p) 3) 150 RN5RK501B L=100μH 80 100 Output Current IOUT(mA) 140 120 100 1.5V 1.3V 80 2.0V 60 40 1.0V 20 VIN=0.9V 0 0 0 20 40 60 80 100 120 140 160 Output Current IOUT(mA) 0 20 40 60 80 100 120 140 160 Output Current IOUT(mA) 13 RN5RK NO.EA-045-181012 RN5RK301B RN5RK301B L=100μH 40 35 30 25 20 1.5V 15 1.3V 10 VIN=1.0V 5 L=220μH 45 2.0V Ripple Voltage Vr(mVp-p) Ripple Voltage Vr(mVp-p) 45 0 40 2.0V 35 30 25 1.0V 1.3V 20 1.5V 15 10 5 0 0 10 20 30 40 50 0 Output Current IOUT(mA) 30 40 50 RN5RK501A L=100μH 3.0V 100 4.0V 2.0V 50 1.5V L=220μH 200 Ripple Voltage Vr(mVp-p) 200 Ripple Voltage Vr(mVp-p) 20 Output Current IOUT(mA) RN5RK501A 150 10 150 3.0V 2.0V 4.0V 100 50 1.5V VIN=0.9V VIN=0.9V 0 0 0 50 100 150 200 0 Output Current IOUT(mA) 50 100 150 200 Output Current IOUT(mA) RN5RK501B RN5RK501B L=100μH 140 L=220μH 140 100 4.0V 80 60 2.0V 40 2.5V 20 Ripple Voltage Vr(mVp-p) Ripple Voltage Vr(mVp-p) 3.0V 120 120 100 3.0V 80 4.0V 60 40 2.5V 20 VIN=1.5V VIN=1.5V 0 0 0 50 100 150 Output Current IOUT(mA) 14 200 0 50 100 150 Output Current IOUT(mA) 200 RN5RK NO.EA-045-181012 4) Start-up/Hold-on Voltage vs. Output Current (Topt25C) RN5RK301A RN5RK501A L=100μH 1.2 1.0 Vstart 0.8 0.6 0.4 Vhold 0.2 1.2 1.0 Vstart 0.8 0.6 Vhold 0.4 0.2 0.0 0.0 0 5 10 0 15 5 15 Output Current IOUT(mA) RN5RK301B RN5RK501B L=100μH L=100μH 2.0 1.8 Start-up/Hold-on Voltage Vstart/Vhold(V) 1.8 1.6 1.4 1.2 Vstart 1.0 0.8 0.6 Vhold 0.4 1.6 1.4 1.2 Vstart 1.0 0.8 0.6 Vhold 0.4 0.2 0.2 0.0 0.0 0 5 10 0 15 5 10 15 Output Current IOUT(mA) Output Current IOUT(mA) Output Voltage vs. Temperature RN5RK301A IOUT=0mA IOUT=10mA 3.00 2.95 IOUT=30mA VIN=3.0V,L=100μH 5.10 Output Voltage VOUT(V) 3.05 RN5RK501A VIN=1.5V,L=100μH 3.10 Output Voltage VOUT(V) 5) 10 Output Current IOUT(mA) 2.0 Start-up/Hold-on Voltage Vstart/Vhold(V) L=100μH 1.4 Start-up/Hold-on Voltage Vstart/Vhold(V) Start-up/Hold-on Voltage Vstart/Vhold(V) 1.4 5.05 5.00 IOUT=30mA 4.95 IOUT=0mA IOUT=10mA 2.90 -50 -25 0 25 50 Temperature Topt( ) 75 100 4.90 -50 -25 0 25 50 75 100 Temperature Topt( ) 15 RN5RK NO.EA-045-181012 6) Start-up Voltage vs. Temperature RN5RK501A RN5RK501B L=100 μH 0.8 0.6 0.4 0.2 0 -50 -25 0 25 50 75 L=100μH 1 Start-up Voltage Vstart(V) Start-up Voltage Vstart(V) 1 0.8 0.6 0.4 0.2 0 -50 100 -25 Temperature Topt( ) 7) 50 75 100 RN5RK501B L=100μH 0.8 0.6 0.4 0.2 0 -50 -25 0 25 50 75 L=100μH 1 Hold-on Voltage Vhold(V) Hold-on Voltage Vhold(V) 1 0.8 0.6 0.4 0.2 0 -50 100 -25 Temperature Topt( ) 0 25 50 75 100 75 100 Temperature Topt( ) Lx Switching Current vs. Temperature RN5RK301A RN5RK501A 500 LxSwitching Current ILx(mA) LxSwitching Current ILx(mA) 500 400 300 200 100 0 -50 -25 0 25 50 Temperature Topt( ) 16 25 Hold-on Voltage vs. Temperature RN5RK501A 8) 0 Temperature Topt( ) 75 100 400 300 200 100 0 -50 -25 0 25 50 Temperature Topt( ) RN5RK NO.EA-045-181012 9) Supply Current 1 vs. Temperature RN5RK301A RN5RK501A 80 Supply Current1 IDD1(μA) Supply Current1 IDD1(μA) 50 40 30 20 10 -50 -25 0 25 50 75 70 60 50 40 30 -50 100 -25 Temperature Topt( ) 50 75 100 75 100 75 100 11) Standby Current 3 vs. Temperature RN5RK301A RN5RK301A 1 Supply Current3 Istandby(μA) 5 Supply Current2 IDD2(μA) 25 Temperature Topt( ) 10) Supply Current 2 vs. Temperature 4 3 2 1 0 -50 0 -25 0 25 50 75 0.8 0.6 0.4 0.2 0 -50 100 -25 Temperature Topt( ) 0 25 50 Temperature Topt( ) 12) Oscillator Duty Cycle vs. Temperature RN5RK301B Oscullator Duty Cycle Maxduty(%) Oscullator Duty Cycle Maxduty(%) RN5RK301A 85 80 75 70 -50 -25 0 25 50 Temperature Topt( ) 75 100 60 58 56 54 52 50 -50 -25 0 25 50 Temperature Topt( ) 17 RN5RK NO.EA-045-181012 13) CE “H” Input Voltage vs. Temperature 14) CE “L” Input Voltage vs. Temperature RN5RK301A RN5RK301A 1 CE L Input Voltage VCEL(V) CE H Input Voltage VCEH(V) 1 0.8 0.6 0.4 0.2 0 -50 -25 0 25 50 75 0.8 0.6 0.4 0.2 0 -50 100 -25 Temperature Topt( ) 75 100 75 100 RN5RK301A 0.8 120 110 VLx Voltage Limit VLx(V) Maximum Oscillator Frequency fOSC(kHz) 50 16) VLX Voltage Limit vs. Temperature RN5RK301A 100 90 80 70 60 -25 0 25 50 Temperature Topt( ) 18 25 Temperature Topt( ) 15) Maximum Oscillator Frequency vs. Temperature 50 -50 0 75 100 0.7 0.6 0.5 0.4 -50 -25 0 25 50 Temperature Topt( ) RN5RK NO.EA-045-181012  1) RN5RKxx2A Output Voltage vs. Output Current (Topt=25°C) RN5RK302A RN5RK502A L=27μH 3.0 2.0V 2.5 2.0 1.5 1.0 1.5V VIN=0.9V 0.5 1.3V 1.0V L=27μH 6.0 Output Voltage VOUT(V) Output Voltage VOUT(V) 3.5 5.0 2.0V 0 3.0 2.0 1.0 200 400 600 800 0 Output Current IOUT(mA) 200 400 600 800 Output Current IOUT(mA) Efficiency vs. Output Current (Topt=25°C) RN5RK302A RN5RK502A L=27μH 100 90 Efficiency η(%) Efficiency η(%) L=27μH 100 90 80 2.0V 70 1.5V 60 1.3V 1.0V VIN=0.9V 50 80 3.0V 70 2.0V VIN=1.0V 60 1.5V 50 40 40 30 0 200 400 600 800 0 Output Current IOUT(mA) 200 400 600 800 Output Current IOUT(mA) Ripple Voltage vs. Output Current (Topt=25°C) RN5RK302A RN5RK502A L=27μH 250 1.3V 2.0V 2.0V 1.5V 200 1.0V 150 L=27μH 300 Ripple Voltage Vr(mVp-p) Ripple Voltage Vr(mVp-p) 3) 1.5V VIN=1.0V 0.0 0 2) 3.0V 4.0 100 50 250 3.0V 1.5V 200 150 100 VIN=1.0V 50 VIN=0.9V 0 0 0 200 400 600 Output Current IOUT(mA) 800 0 200 400 600 800 Output Current IOUT(mA) 19 RN5RK NO.EA-045-181012 4) Start-up/Hold-on Voltage vs. Output Current (Topt=25°C) RN5RK302A RN5RK502A L=27μH 2.0 Start-up/Hold-on Voltage Vstart/Vhold(V) Start-up/Hold-on Voltage Vstart/Vhold(V) 1.8 1.6 1.4 1.2 Vstart 1.0 0.8 0.6 Vhold 0.4 0.2 0.0 0 50 100 150 200 2.4 2.2 2.0 1.8 1.6 1.4 Vstart,Vhold 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 50 Output Current IOUT(mA) 5) 150 200 Output Voltage vs. Temperature 3.05 IOUT=0mA 3.00 2.95 IOUT=50mA 2.90 IOUT=100mA 2.85 2.80 -50 -25 0 25 50 75 VIN=3.0V,L=27μH 5.10 Output Voltage VOUT(V) Output Voltage VOUT(V) RN5RK502A VIN=1.2V,L=27μH 3.10 5.05 5.00 IOUT=100mA IOUT=50mA 4.95 4.90 -50 100 IOUT=0mA -25 0 25 50 75 100 75 100 Temperature Topt( ) Temperature Topt( ) EXT “H” Output Current vs. Temperature RN5RK502A 10 EXT H Output Current IEXTH(mA) EXT H Output Current IEXTH(mA) RN5RK302A 9 8 7 6 5 4 3 2 1 0 -50 -25 0 25 50 Temperature Topt( ) 20 100 Output Current IOUT(mA) RN5RK302A 6) L=27μH 75 100 10 9 8 7 6 5 4 3 2 1 0 -50 -25 0 25 50 Temperature Topt( ) RN5RK NO.EA-045-181012 7) EXT “L” Output Current vs. Temperature RN5RK502A EXT L Output Current IEXTL(mA) EXT L Output Current IEXTL(mA) RN5RK302A 20 18 16 14 12 10 8 6 4 2 0 -50 -25 0 25 50 75 100 20 18 16 14 12 10 8 6 4 2 0 -50 -25 Temperature Topt( ) 8) 25 50 75 100 75 100 75 100 Temperature Topt( ) Supply Current 1 vs. Temperature RN5RK302A RN5RK502A 50 Supply Current1 IDD1(μA) Supply Current1 IDD1(μA) 50 40 30 20 10 0 -50 -25 0 25 50 75 40 30 20 10 0 -50 100 -25 Temperature Topt( ) 25 50 10) Standby Current vs. Temperature RN5RK302A RN5RK302A 1 Supply Current3 Istandby(μA) 5 4 3 2 1 0 -50 0 Temperature Topt( ) Supply Current 2 vs. Temperature Supply Current2 IDD2(μA) 9) 0 -25 0 25 50 Temperature Topt( ) 75 100 0.8 0.6 0.4 0.2 0 -50 -25 0 25 50 Temperature Topt( ) 21 RN5RK NO.EA-045-181012 11) Oscillator Duty Cycle vs. Temperature 12) Maximum Oscillator Frequency vs. Temperature RN5RK302A 120 Maximum Oscillator Frequency fOSC(kHz) Oscullator Duty Cycle Maxduty(%) RN5RK302A 85 80 75 70 -50 -25 0 25 50 75 110 100 90 80 70 60 50 -50 100 -25 Temperature Topt( ) RN5RK302A 75 100 RN5RK302A 1 CE L Input Voltage VCEL(V) CE H Input Voltage VCEH(V) 50 14) CE “L” Input Voltage vs. Temperature 1 0.8 0.6 0.4 0.2 -25 0 25 50 Temperature Topt( ) 22 25 Temperature Topt( ) 13) CE “H” Input Voltage vs. Temperature 0 -50 0 75 100 0.8 0.6 0.4 0.2 0 -50 -25 0 25 50 Temperature Topt( ) 75 100 1. 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