Io=500mA LDO with Reset function

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Winifred Atkinson
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Io=mA LDO with Reset function GENERAL DESCRIPTION The NJW4116 is a ma output low dropout voltage regulator with reset function monitoring output voltage.

1 Io=mA LDO with Reset function GENERAL DESCRIPTION The NJW4116 is a ma output low dropout voltage regulator with reset function monitoring output voltage. Reset Output Hold Time is adjustable by external capacitor. Because of wide operate voltage range and wide temperature range, the NJW4113 suits for high reliability application such as automotive application. PACKAGE OUTLINE NJW4116DL3 FEATURES Wide Operating oltage Range 4. to 4 Low Current Consumption μa typ. High Precision Output oltage o 1.%(Ta=2 C) o 2.%(Ta=-4 to +12 C) High Precision Detection oltage DET 1.%(Ta=2 C) DET 2.%( Ta=-4 to +12 C) Output Current Io(min.)=mA Adjustable RESET Output Delay Hold Time with external capacitor Correspond to Low ESR capacitor (MLCC) Thermal Shutdown Protection Over Current Protection Package Outline TO-22- PIN CONFIGURATION OUT C D RO 1. Input oltage Pin 2. RO Reset Output Pin 3. Pin 4. C D External Capacitor Pin for setting RESET Output Delay Hold Time. OUT Output oltage Pin er

2 BLOCK DIAGRAM OUT Current Limit Bandgap Reference Thermal Protection Bandgap Reference Delay Circuit RO C D PRODUCT CLASSIFICATION Status Device Name Output oltage Detection oltage M.P. NJW4116DL3-A46-T M.P. NJW4116DL3-A41-T PLAN NJW4116DL3-B3-T ABSOLUTE MAXIMUM RATINGS (Ta=2 C) PARAMETER SYNBOL RATINGS UNIT Input oltage -.3 to +4 C D pin oltage C D -.3 to +6 Output oltage OUT -.3 to +6 RESET Output oltage RO -.3 to +6 Power Dissipation P D 119(*1) 312(*2) mw Junction Temperature Tj -4 to +1 C Operating Temperature Topr -4 to +12 C Storage Temperature Tstg -4 to +1 C (*1): Mounted on glass epoxy board. ( mm: based on EIA/JDEC standard size, 2Layers, Cu area 1mm 2 ) (*2): Mounted on glass epoxy board. ( mm: based on EIA/JDEC standard, 4Layers) (For 4Layers: Applying mm inner Cu area and thermal via holes to a board based on JEDEC standard JESD1-) Operating oltage Range =4. to er

3 ELECTRICAL CHARACTERISTICS Unless otherwise noted, = O +1, C IN =1.µF, C O =4.7µF( O <3.4: C O =1µF) Ta=2 C (Regulator Block) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Output oltage Output Current Line Regulation Load Regulation Ripple Rejection Dropout oltage(*3) Average Temperature Coefficient of Output oltage O I O O / O / I O RR IO I O =3mA -1.% - +1.% I O =3mA, Ta= -4 C to +12 C -2.% - +2.% O O.9, Ta= -4 C to +12 C - - ma = O +1 to 4, I O =3mA = O +1 to 4, I O =3mA, %/ Ta= -4 C /+12 C ( * ) I O =ma to ma I O =ma to ma, %/ma Ta= -4 C /+12 C ( * ) = O +1, ein=2mrms, f=1khz, I O =1mA, O =. - - db I O =3mA I O =3mA, Ta= -4 to +12 C O / Ta Ta= C to 8 C, I O =3mA - ± - ppm/ C (oltage Detector Block) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Detection oltage DET -1.% - +1.% Ta= -4 C to +12 C -2.% - +2.% Hysteresis oltage HYS Ta= -4 C to +12 C - 1 m Low level O = DET RESET Output oltage ROL O = DET -., Ta= -4 C to +12 C Average temperature coefficient of Detection oltage DET / Ta Ta= C to 8 C - ± - ppm/ C oltage Detector Block Operating oltage OPL Ta= -4 C to +12 C RESET Output oltage at Start up ROU start up -. - Pull up resistor R PU k C RESET Output Delay D =4.7nF, RO =L H t Hold Time d C D =4.7nF, RO =L H, 3-14 Ta= -4 C to +12 C ms (General Characteristics) PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT I O =ma - 9 Quiescent Current I Q µa I O =ma, Ta= -4 C to +12 C (*3):Except Output oltage Rank less than 3.8. (*4):These parameter are guaranteed with only -4 C and +12 C. The above specifications are common specifications for all output voltages. Therefore, it may be different from the individual specification for a specific output voltage. * These parameters are tested by Pulse Measurement. er

4 THERMAL CHARACTERISTICS PARAMETER SYMBOL ALUE UNIT Junction-to-Ambient 1 (*) ja thermal resistance 4 (*6) C/W Junction-to-Top of package 17 (*) jt characterization parameter 12 (*6) C/W (*): Mounted on glass epoxy board. ( mm:based on EIA/JDEC standard size, 2Layers, Cu area 1mm 2 ) (*6): Mounted on glass epoxy board. ( mm:based on EIA/JDEC standard, 4Layers) (For 4Layers: Applying mm inner Cu area and thermal via holes to a board based on JEDEC standard JESD1-) POWER DISSIPATION vs. AMBIENT TEMPERATURE 3 NJW4116DL3 PowerDissipation (Topr=-4 to +12 C,Tj=1 C) 3 on 4 layers board Power Dissipation P D (mw) on 2 layers board Temperature : Ta( C) er

5 TIMING CHART O (Input oltage) O (Output oltage) O DETH DET OPL RO (Reset Output oltage) OUT t d t d * RO pin is pulled up to OUT IC s internally RESET Output Delay Hold Time t d The NJW4116 has the RESET Output Delay Hold Time t d till the RESET outputs H in order to prevent malfunction due to chattering after the Output oltage O exceeds the RESET release voltage DETH (= DET + HYS ). The t d is decided by capacitance connected to Cd pin as follows: External delay capacitor [nf] = (Required) RESET Delay Hold Time t d [ms] / 1[ms] x 4.7[nF] 1 Reset Output Delay Hpld time td [ms] C D [nf] Fig.1) RESET Output Delay Hold Time vs External delay capacitor C D er

6 TEST CIRCUIT I IN A OUT 1.μF (ceramic) NJW μF(*7) (ceramic) I OUT OUT 4.7nF (Ceramic) C D RO RO (*7) o<3.4 version :Co=1uF TYPICAL APPLICATION OUT OUT 1.μF NJW μF(*8) C D RO RO 4.7nF (*8) o<3.4 version :Co=1uF er

7 *Input Capacitor C IN The input capacitor C IN is required in order to prevent oscillation and reduce power supply ripple of applications when high power supply impedance or a long power supply line. Therefore, the recommended capacitance (refer to conditions of ELECTRIC CHARACTERISTIC) or larger input capacitor, connected between and as short path as possible, is recommended in order to avoid the problem. *Output Capacitor C O The output capacitor C O is required for a phase compensation of the internal error amplifier, and the capacitance and the equivalent series resistance (ESR) influence stable operation of the regulator. If use a smaller output capacitor than the recommended capacitance (refer to conditions of ELECTRIC CHARACTERISTIC), it may cause excess output noise or oscillation of the regulator due to lack of the phase compensation. Therefore, the recommended capacitance or larger output capacitor, connected between OUT and as short path as possible, is recommended for stable operation. The recommended capacitance may be different by output voltage, therefore confirm the recommended capacitance of the required output voltage. Furthermore, a larger output capacitor reduces output noise and ripple output, and also improves Output Transient Response when a load changes rapidly. Selecting the output capacitor, should consider varied characteristics of a capacitor: frequency characteristics, temperature characteristics, DC bias characteristics and so on. Therefore, the capacitor that has a sufficient margin of the rated voltage against the output voltage and superior temperature characteristics, is recommended for C O. er

8 TYPICAL CHARACTERISTICS Output oltage : O [] C C IN = 1.µF Io = 3mA Output oltage vs Input oltage Input oltage : [] Output oltage : O [] = 6. C IN = 1.µF -4 1 Output oltage vs Output Current Output Current :Io [ma] Ground Pin Current :I [μa] C =6. C IN = 1.μF Co=4.7μF Ground Pin Current vs Output Current Quiescent Current :I Q [μa] Quiescent Current vs Input C C IN = 1.µF Output is Open Output Current:Io [ma] Input oltage : [] Load Regulation vs Output Current 1 Dropout oltage vs Output Current Load Regulation : o/ Io [m] C = 6. C IN = 1.µF Output Current :Io [ma] Dropout oltage : IO C C IN = 1.µF Output Current :Io [ma] er

9 12 NJW4116_ A46 Peak Output Current vs Input oltage 1 Short Circuit Current vs Input oltage Peak Output Current :I OPEAK [ma] C O = 4. C IN = 1.µF Input oltage : [] Short Circuit Current :I SC [ma] C O = C IN = 1.µF Input oltage : [] Ripple Rejection :RR [db] Io=mA Io=1mA Io=3mA Io=1mA Io=mA Ripple Rejection vs = 2 C = 7 C IN = 1.µF ein = 2mrms 1 1 1k 1k 1k Frequency :f [Hz] Ripple Rejection :RR [db] Ripple Rejection vs Output Current in =6, 1kHz in =6, 1kHz in =7, 1kHz in =7, 1kHz = 2 C 1 C IN = 1.µF ein = 2mrms Output Current :Io [ma] Equivalent Series Resistance :ESR [Ω] Equivalent Series Resistance vs Output = 6-4 C IN = 1.µF STABLE REGION Output Current :Io [ma] Output oltage : O [] Io=3mA Io=mA Output oltage vs 4.8 IN = 6. C IN = 1.μF er

10 Peak Output Current :I OPEAK [ma] = 6. O = 4. C IN = 1.μF Peak Output Current vs Temperature Short Circuit Current :I SC [ma] = 6. O = C IN = 1.μF Short Circuit Current vs Temperature Line Regulation : o/ [m] Line Regulation vs Temperature = 6. to 4 Io = 3mA -8 C IN = 1.μF Load Regulation : o/ I O [m] = 6. C IN = 1.μF Load Regulation vs Temperature Io=1mA Io=mA Temperature :[ºC] Output oltage : O [] Output oltage vs Temperature = 6. C IN = 1.μF Quiescent Current :I Q [μa] Quiescent Current vs Temperature = 6. C IN = 1.μF 1 Output is Open er

11 Dropout oltage : IO [] = 3mA C IN = 1.μF Dropout oltage vs Temperature RO Pull-Up Resistor :R PU [kω] RO Pull-Up Resistor vs Temperature Detection oltage vs Temperature 4.3 NJW4116_A41 Detection oltage vs Temperature Detection oltage : DET [] Detection oltage : DET [] Temperature:[ºC] Hysteresis oltage : HYS [] Hysterisis oltage vs Temperature Hysteresis oltage : HYS [] NJW4116_A41 Hysterisis oltage vs Temperature er

12 6 Input Transient Response.6 7 Load Tarnsient Response Input oltage : [] = 2 C = 6-4 Io = 3mA Input oltage Output oltage Time :t [ms] Output oltage :o[] Output Current :I O [] = 2 C = 6 Io = 3 - ma Output Current Output oltage Time :t [ms] Output oltage :o[] er

13 [CAUTION] The specifications on this databook are only given for information, without any guarantee as regards either mistakes or omissions. The application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights. er

L4970A 10A SWITCHING REGULATOR

L4970A 10A SWITCHING REGULATOR 10A OUTPUT CURRENT.1 TO 40 OUTPUT OLTAGE RANGE 0 TO 90 DUTY CYCLE RANGE INTERNAL FEED-FORWARD LINE REGULA- TION INTERNAL CURRENT LIMITING PRECISE.1 ± 2 ON CHIP REFERENCE