NJW4187. High Voltage Io=1000mA Low Dropout Regulator. FEATURES Wide Operating Voltage Range PRODUCT CLASSIFICATION

Transcription

1 High Voltage Io=mA Low Dropout Regulator GENERAL DESCRIPTION The NJW487 is a high voltage and low current consumption low dropout regulator. It has two lineups as A version (built-in ON/OFF function type) and B version (3-terminal / compatible with 78 series) NJW487 is mounted to TO--3/- packages and corresponded to Low ESR capacitor (MLCC). The wide input range makes NJW487 suitable for a Car accessory, industrial supplies, battery equipment and various applications. PACKAGE OUTLINE NJW487DL3 NJW487DL FEATURES Wide Operating Voltage Range 4.V to 4V Low Current Consumption μa typ. (A version) 48μA typ. (B version) High Precision Output V O.% Output Current I O (min.)=ma Output Voltage Range.V to V Correspond to Low ESR capacitor (MLCC) ON/OFF Control (apply only the A version) Internal Thermal Overload Protection Internal Over Current Protection Package Outline A ver. TO-- B ver. TO--3 PRODUCT CLASSIFICATION Device Name Version ON/OFF Function Package NJW487DL3-xxA A Yes TO-- NJW487DL-xxB B - TO--3 xx=output Voltage ex) 33=3.3V =.V PIN CONFIGURATION 3 4 NC 3 3 CONTROL NJW487DL3-A NJW487DL-B Ver

2 BLOCK DIAGRAM A version CONTROL Current Limit Bandgap Reference Thermal Protection B version Current Limit Bandgap Reference Thermal Protection OUTPUT VOLTAGE RANK LIST A version Device Name Output Voltage NJW487DL3-33A 3.3V NJW487DL3-A.V B version Device Name Output Voltage NJW487DL-33B 3.3V NJW487DL-B.V - - Ver.6--

3 ABSOLUTE MAXIMUM RATINGS (Ta= C) PARAMETER SYNBOL RATINGS UNIT Input Voltage -.3 to +4 V Control Voltage(*) V CONT -.3 to +4 V Output Voltage -.3 to 7 V Power Dissipation P D 9 (*) 3 (*3) mw Junction Temperature Tj -4 to + C Operating Temperature Topr -4 to + C Storage Temperature Tstg -4 to + C (*): Apply only the A version. (*): Mounted on glass epoxy board. ( mm:based on EIA/JDEC standard size, Layers, Cu area mm ) (*3): Mounted on glass epoxy board. ( mm:based on EIA/JDEC standard, 4Layers) (For 4Layers: Applying 74. x 74.mm inner Cu area and thermal via hole to a board based on JEDEC standard JESD-) INPUT VOLTAGE RANGE =4.V to 4V ELECTRICAL CHARACTERISTICS Unless otherwise noted, =V O +V, C IN =.µf, C O =4.7µF(3V V O 3.4V: C O =µf), Ta= C PARAMETER SYMBOL TEST CONDITION MIN. TYP. MAX. UNIT Output Voltage V O I O =ma -.% - +.% V Quiescent Current I Q A version, I O =ma, except I CONT - 9 B version, I O =ma μa Quiescent Current at Control OFF (*4) I Q (OFF) V CONT =V - - μa Output Current I O V O ma Line Regulation V O / = V O +V to 4V, I O =ma %/V Load Regulation V O / I O I O =ma to ma %/ma Ripple Rejection RR = V O +V,ein=mVrms, V O =3.3V f=khz, I O =ma V O =.V db Dropout Voltage (*) V IO I O =6mA V Average Temperature Coefficient of Output Voltage V O / Ta Ta= to 8 C, I O =ma - - ppm/ C Control Current (*4) I CONT V CONT =.6V - 3 μa Control Voltage for ON-state (*4) V CONT(ON) V Control Voltage for OFF-state (*4) V CONT(OFF) V (*4): Apply only the A version. (*): The output voltage excludes under 3.8V The above specification is a common specification 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. Ver

4 THERMAL CHARACTERISTICS PARAMETER SYMBOL VALUE UNIT Junction-to-Ambient (*6) ja thermal resistance 4 (*7) C/W Junction-to-Top of package 7 (*6) jt characterization parameter (*7) C/W (*6): Mounted on glass epoxy board. ( mm:based on EIA/JDEC standard size, Layers, Cu area mm ) (*7): Mounted on glass epoxy board. ( mm:based on EIA/JDEC standard, 4Layers) (For 4Layers: Applying mm inner Cu area and a thermal via hole to a board based on JEDEC standard JESD-) POWER DISSIPATION vs. AMBIENT TEMPERATURE 3 NJW487DL/DL3 PowerDissipation (Topr=-4~+ C,Tj= C) Power Dissipation P D (mw) 3 on 4 layers board on layers board Temperature : Ta( C) Ver.6--

5 TEST CIRCUIT A version A I IN.μF NJW487-A *8 4.7μF (Ceramic) I OUT V A I CONT CONTROL *8 : Vo<3.4V : Co=µF (Ceramic) V V CONT B version A I IN. F NJW487-B *9 4.7 F I OUT V (ceramic) *9: Vo < 3.4V version : Co= F(Ceramic) Ver

6 TYPICAL APPLICATION A version In the case where ON/OFF Control is not required.μf NJW487-A * 4.7μF R CONTROL * : Vo<3.4V version: Co=µF Connect CONTROL pin to pin In use of ON/OFF CONTROL.μF NJW487-A * 4.7μF R CONTROL * : Vo<3.4V version: Co=µF State of CONTROL pin: H output is enabled. L or open output is disabled. B version *. F NJW487-B 4.7 F *: Vo<3.4V version : Co= F Ver.6--

7 *In the case of using a resistance "R" between and CONTROL. If this resistor is inserted, it can reduce the control current when the control voltage is high. The applied voltage to control pin should set to consider voltage drop through the resistor R and the minimum control voltage for ON-state. The V CONT (ON) and I CONT have temperature dependence as shown in the "Control Current vs. Temperature" and " Control Voltage vs. Temperature" characteristics. Therefore, the resistance "R" should be selected to consider the temperature characteristics. *Input Capacitor C IN Input Capacitor C IN is required to prevent oscillation and reduce power supply ripple for applications when high power supply impedance or a long power supply line. Therefore, use the recommended C IN value (refer to conditions of ELECTRIC CHARACTERISTIC) or larger and should connect between and as shortest path as possible to avoid the problem. *Output Capacitor C O Output capacitor (C O ) will be required for a phase compensation of the internal error amplifier. The capacitance and the equivalent series resistance (ESR) influence to stable operation of the regulator. Use of a smaller C O may cause excess output noise or oscillation of the regulator due to lack of the phase compensation. On the other hand, Use of a larger C O reduces output noise and ripple output, and also improves output transient response when rapid load change. Therefore, use the recommended C O value (refer to conditions of ELECTRIC CHARACTERISTIC) or larger and should connect between and as shortest path as possible for stable operation The recommended capacitance depends on the output voltage rank. Especially, low voltage regulator requires larger C O value. In addition, you should consider varied characteristics of capacitor (a frequency characteristic, a temperature characteristic, a DC bias characteristic and so on) and unevenness peculiar to a capacitor supplier enough. When selecting C O, recommend that have withstand voltage margin against output voltage and superior temperature characteristic. *Transient response characteristic of Output Voltage In general, overshoot or undershoot of output voltage may occur due to the transient response characteristic of an internal error amplifier. Especially, low current consumption regulator may have overshoot or undershoot due to slow feedback caused by current saving design. Therefore, design validation is important in the following cases:. Input voltage or output current change sharply. Output capacitors is small 3. Output load is light 4. A regulator starts up with very low dropout voltage operation. Increasing the value of input and/or output capacitor is a common countermeasure for improving a transient response characteristic. A transient response characteristic may vary with operating conditions and external components value. Please check it with the actual environment. Ver

8 *The notes of the evaluation when pin is shorted to When evaluated short circuit test, the IC may break down because of regenerated energy by the parasitic inductance included in wiring pattern. It phenomenon appears conspicuously when output voltage is high( =8.V or more)or connected to inductive load. In case of short circuit in actual application, not likely to destruction of IC because of some of Resistance exist between load. If happened above phenomenon by the short circuit test with the actual application, recommend connecting schottky barrier diode(sbd) between pin and the or using output condensers that have ESR more than ohrm like a tantalum or aluminum electrolytic capacitor.(see below figure) (a)in case of insert Schottky barrier diode between pin - NJW487 SBD (b) In case of using the electrolysis condenser or insert series resistance NJW487 Connecting resistance(ohrm or more)in series. (in case of ESR of C OUT is low) Ver.6--

9 TYPICAL CHARACTERISTICS Output Voltage: Vo (V) C IN =.μf(ceramic) Io=mA Io=mA NJW487_.V Output Voltage vs Input Voltage Io=6mA Output Voltage: V O (V) NJW487_.V Output Voltage vs Output =6.V C IN =.μf(ceramic) ºC ºC -4ºC Io=mA Input Voltage: (V) Output Current: Io (ma) 6 NJW487(A ver.)_.v Quiescent Current vs Input Voltage 6 NJW487(B ver.)_.v Quiescent Current vs Input Voltage Quiescent Current: IQ (μa) 4 Output is Open except I CONT C IN =.μf(ceramic) Quiescent Current : I Q (μa) 4 Output is Open C IN =.μf(ceramic) Input Voltage: (V) Input Voltage : (V) Ground Pin Current: I (μa) 4 3 NJW487_.V Ground Pin Current vs Output =6.V C IN =.μf(ceramic) Output Voltage: V O (V) Rc=Ω NJW487_.V Control Voltage vs Output Voltage =6.V C IN =.μf(ceramic)... 3 Output Current: Io (ma) Control Voltage: V CONT (V) Ver

10 NJW487_.V Control Voltage vs Control Current NJW487_.V Load Regulation vs Output Current Control Current: I CONT C =6.V C IN =.μf(ceramic) Rc=Ω Rc=kΩ Load Regulation : ΔVo/ΔIo (mv) C =6.V C IN =4.7μF(Ceramic) Control Voltage: V CONT (V) Output Current: Io (ma) Peak Output Current : I OPEAK (ma) NJW487_.V Peak Output Current vs Input Vo=4.V C IN =.μf(ceramic) Dropout Voltage: ΔV IO (V) NJW487_.V Dropout Voltage vs Output C IN =.μf(ceramic) Input Voltage : (V) Output Current: Io (ma) Ripple Rejection Ratio : RR (db) Io=3mA NJW487_.V Ripple Rejection Ratio vs Frequency Io=mA Io=mA Io=mA Io=3mA =6.V ein=mvrms C IN =.μf(ceramic) Io=mA k k k Frequency : f (Hz) Ripple Rejection Ratio: RR (db) NJW487_.V Ripple Rejection Ratio vs Output Current f=khz =6.V ein=mvrms C IN =.μf(ceramic)... Output Current: Io (ma) - - Ver.6--

11 Equivalent Serise Resistance:ESR (Ω). NJW487_.V Equivalent Serise Resistance vs Output =6.V C IN =.μf(ceramic) STABLE REGION.... Output Current: Io (ma) Output Voltage: V O (V).. =6.V C IN =.μf(ceramic) Io=mA NJW487_.V Output Voltage vs Temperature Io=mA Io=6mA Io=mA NJW487_.V Control Voltage vs Temperature 4 NJW487_.V Control Current vs Temperature Control Voltage:V CONT =6.V C IN =.μf(ceramic) Control Current: I CONT (μa) 3. CONT =.6V C IN =.μf(ceramic). - - Peak Output Current: I OPEAK (ma) 3 =6.V =4V NJW487_.V Peak Output Current vs O =4.V C IN =.μf(ceramic) - Short Circuit Current:I SC (ma) NJW487_.V Short Circuit Current vs O =V C IN =.μf(ceramic) =6.V =4V - Ver

12 Line Regulation:ΔVo/ΔIo (%/V).. NJW487_.V Line Regulation vs Temperature =6.-4V Io=mA C IN =.μf(ceramic) -. - Load Regulation:ΔVo/ΔIo =6.V Io=-mA C IN =.μf(ceramic) NJW487_.V Load Regulation vs Temperature - Output Voltage V O (V) NJW487_.V Output Voltage vs IN =6.V Io=mA C IN =.μf(ceramic) - Dropout Voltage:ΔVio (V) NJW487_.V Dropout Voltage vs IN =.μf(ceramic) ma 6mA 3mA - Quiescent Current :I Q (μa) NJW487(A ver.)_.v Quiescent Current vs =6.V Output is open. C IN =.μf(ceramic) I Q +Icont I Q Ver.6--

13 NJW487_.V Input Transient Response NJW487_.V Load Transient Response Output Voltage : (V). Input C Vin=6.-7.V Io=mA Output Voltage 7 6 Input Voltage : (V) Output Voltage :VOUT(V).4. Output C Vin=6.V Io=-mA Output Voltage Output Current :IOUT(V) Time :t(µs) Time :t(ms) NJW487(A ver.)_.v ON/OFF Transient Response without Load NJW487(A ver.)_.v ON/OFF Transient Response Control Voltage Control Voltage Output Voltage :Vo(V) 6 C =6.V Io=mA C IN=.μF(Ceramic) Output Voltage Control Voltage :VCONT(V) Output Voltage :Vo(V) 6 C =6.V Io=mA C IN=.μF(Ceramic) Output Voltage Control Voltage :VCONT(V) Time :t(s) Time :t(ms) NJW487(A ver.)_.v Control_On Delay Time Control Voltage O utput Voltage :V o (V ) 6 4 Output C =6.V Io=mA C IN =.μf(ceramic) C ontrol Voltage :VC O NT (V ) Time :t(ms) Ver

14 [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 Ver.6--