NCP400
150 mA CMOS Low IqLow−Dropout VoltageRegulator with VoltageDetector Output
The NCP400 is an integration of a low−dropout regulator and avoltage detector in a very small chip scale package. The voltageregulator is capable of supplying 150 mA with a low dropout of 160 mVat 100 mA. It contains a voltage reference unit, an error amplifier,comparators, PMOS power transistor, current limit and thermalshutdown protection circuits for the regulator portion.
A highly accurate voltage detector with hysteresis and an externallyprogrammable time delay generator are implemented to preventerratic system reset operation. It features complementary output withactive low reset function.
The NCP400 is designed to work with low cost ceramic capacitorsand requires only a small 1.0 mF capacitor at regulator output. Its lowquiescent current is ideal for battery powered applications.
Features
http://onsemi.com
MARKINGDIAGRAM6 BumpFlip−ChipFC SUFFIXCASE 499AH400ALYW= Device Code= Assembly Location= Wafer Lot= Year= Work Week400ALYWA1A1•LDO Voltage Regulator and Voltage Detector Together in a Very
Small Wafer Level Package, 6 Bump Flip−Chip, 1.0 x 1.5 mm•Low Quiescent Current of 50 mA Typical
•Internal Current Limit and Thermal Shutdown Protection•Low Cost and Small Size Ceramic Capacitors•Input Voltage Range of 1.8 V to 5.0 V•Voltage Regulator
♦1.8 V (*) Output with 2% Accuracy♦Excellent Line and Load Regulation♦Low Dropout of 160 mV at 100 mA•Voltage Detector
♦2.3 V (*) Threshold with 2% Accuracy
♦Externally Programmable Time Delay Generator♦Excellent Line and Load Regulation•This is a Pb−Free Device
(∗) Other voltages can be developed upon request.Please contact your ON Semiconductor representative.
Typical Applications
PIN CONNECTIONSVOUTGND6512VINENABLECD43RESET(Bottom View)ORDERING INFORMATION
DeviceNCP400FCT2G
PackageFlip−Chip(Pb−Free)
Shipping†3000 Tape & Reel
••••
Memory CardsCellular Phones
Digital Still Cameras and CamcordersBattery Powered Equipment
†For information on tape and reel specifications,including part orientation and tape sizes, pleaserefer to our Tape and Reel Packaging SpecificationsBrochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 20051
April, 2005 − Rev. 3
Publication Order Number:
NCP400/D
元器件交易网www.cecb2b.com
NCP400
TYPICAL OPERATION CIRCUIT
VDDVIN1 mFCINENABLECDNCP400C
VOUT1 mFCOUTRESETRESETMicroprocessor/ Memory ChipGNDGNDDelayTime:(Dt)+
(C 0.97V)1.56mA
Figure 1. Power Supply and Reset Circuit for Microprocessor and/or Memory Chip
PIN DESCRIPTION
Pin No.123456SymbolVINENABLERESETCDGNDVOUTPositive power supply input voltage.This input is used to place the device into low–power standby. When this input is pulled low, the device isdisabled. If this function is not used, ENABLE should be connected to VIN.Voltage detect output signal.Delay capacitor pin.Power supply ground.Voltage regulator output voltage.DescriptionREPRESENTATIVE BLOCK DIAGRAM
VINVOUT
ENABLEONOFF
−++Vref2
ThermalShutdownDriver w/CurrentLimit−+RESETGNDCDFigure 2. Representative Block Diagram
http://onsemi.com
元器件交易网www.cecb2b.com
NCP400
ABSOLUTE MAXIMUM RATINGS
RatingInput VoltageEnable VoltageOutput VoltageDelay Capacitor Pin VoltageReset Pin VoltageReset Pin CurrentPower Dissipation and Thermal Characteristics for Microbump−6Thermal Resistance Junction−to−Air (Note 3)Operating Junction TemperatureOperating Ambient TemperatureSymbolVINENABLEVOUTVCDVresetIresetRθJATJTAValue0 to 5.5−0.3 to VIN+0.3−0.3 to VIN+0.3−0.3 to VIN+0.3−0.3 to VIN+0.370Refer to Figure 22−40 to +125−40 to +85°C°CUnitVVVVVmA°C/WMaximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limitvalues (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,damage may occur and reliability may be affected.
1.This device contains ESD protection and exceeds the following tests:
Human Body Model (HBM) ±2000 V per MIL−STD−883, Method 3015Machine Model (MM) ±200 V.
2.Latchup capability (85°C)100 mA DC with trigger voltage.
3.PCB top layer uses a single copper layer and is tested @ 250 mW.
http://onsemi.com
3
元器件交易网www.cecb2b.com
NCP400
ELECTRICAL CHARACTERISTICS (VIN = VOUT(nom.) + 1.0 V, ENABLE = VIN, CIN = 1.0 mF, COUT = 1.0 mF, TA = 25°C, unless
otherwise noted.)
CharacteristicInput Voltage (TA = –40_C to 85_C)Output Voltage (TA= 25_C, IOUT = 1.0 mA)Output Voltage (TA = –40_C to 85_C, IOUT = 1.0 mA)Line Regulation (IOUT = 10 mA, VIN = 2.8 V to 5.0 V)Load Regulation (IOUT = 1.0 mA to 150 mA)Maximum Output CurrentDropout Voltage (IOUT = 100 mA, Measured at VOUT –3.0%)Quiescent Current(Enable Input = 0V, IOUT = 0 mA )(Enable Input = VIN , IOUT = 1.0 mA to Io(nom.))Enable Input Threshold Voltage(Voltage Decreasing, Output Turns Off, Logic Low)(Voltage Increasing, Output Turns On, Logic High)Output Short Circuit Current (VOUT = 0 V, VIN = 5.0 V) (Note 4)Ripple Rejection (f = 1.0 kHz, Io = 60 mA)Output Noise Voltage (f = 20 Hz to 100 kHz, IOUT = 60 mA)Output Voltage Temperature CoefficientDetector Threshold (TA = 25_C)Detector Threshold HysteresisReset Output CurrentN−Channel Sink Current (Reset = 0.5 V, VIN = 1.8 V)P−Channel Source Current (Reset = 2.4 V, VIN = 4.5 V)CD Delay Pin Threshold Voltage (Pin 4) (VIN=2.0 V)Delay Capacitor Pin Sink Current (Pin 4)(VIN = 1.8 V, VCD = 0.5 V)Delay Current Pin Source Current (Pin 4)(VCD = 0, VIN = 2.8 V)4.Values are guaranteed by design.SymbolVINVOUTVOUTReg lineReg loadIOUT(nom.)VIN–VOUTIQ_SDIQ_ENVTH(EN)Min1.81.7641.746––––––0.17−200––−2.2540.0691.01.00.760.20.78Typ–1.81.81.00.31501600.25370.251.2540050110±1002.300.1157.05.50.97391.56Max5.01.8361.8543.50.8–2001.0100−1.65800––−2.3460.161––1.14−mA3.12VmAUnitVVVmV/VmV/mAmAmVmAVmAdBmVrmsppm_CVVmAIOUT(MAX)RRVNTCVDETVHYSIRESETVTH(CD)ICD_SINKICD_SOURCEhttp://onsemi.com
4
元器件交易网www.cecb2b.com
NCP400
TYPICAL CHARACTERISTICS
VIN = 3.3 VTA = 25°CIOUT = 1 mACIN = 1 mF
Upper Trace: Input Voltage 1 V/divLower Trace: Output Voltage 1 V/divUpper Trace: Input voltage 2 V/div
Lower Trace: Output voltage 50 mV/div
Figure 3. Turn−ON ResponseFigure 4. Line Transient Response
IOUT = 150 mA to 1 mA,VIN = 3.3 V, CIN = 1 mFUpper Trace: Output Voltage 200 mV/div
Lower Trace: Output Loading Current 100 mA/divIOUT = 1 mA to 150 mA,VIN = 3.3 V,CIN = 1 µFUpper Trace: Output Voltage 200 mV/div
Lower Trace: Output Loading Current 100 mA/div
Figure 5. Load Transient ResponseFigure 6. Load Transient Response
1.815VOUT, OUTPUT VOLTAGE (V)1.8101.8051.8001.7951.7901.785
−50
VIN = 2.8 VCIN = 1 mFCOUT = 1 mFIQ_EN, QUIESCENT CURRENT (mA)56545250484644−50
VIN = 2.8 VCIN = 1 mFCOUT = 1 mF−250255075100−250255075100
TA, AMBIENT TEMPERATURE (°C)TA, AMBIENT TEMPERATURE (°C)
Figure 7. Output Voltage vs. Temperature
Figure 8. Quiescent Current (Enable)
vs. Temperature
http://onsemi.com
5
元器件交易网www.cecb2b.com
NCP400
TYPICAL CHARACTERISTICS
VIN = 2.8 VCIN = 1 mFCOUT = 1 mFVDET, DETECTOR THRESHOLD VOLTAGE (V)0.40IQ_SD, QUIESCENT CURRENT (mA)0.350.300.250.200.150.10−50
2.362.342.322.302.282.262.24−50
VIN = 2.8 VCIN = 1 mFCOUT = 1 mF−250255075100−250255075100
TA, AMBIENT TEMPERATURE (°C)TA, AMBIENT TEMPERATURE (°C)
Figure 9. Quiescent Current (Shutdown)
vs. Temperature
VHYS, DETECT THRESHOLD HYSTERESIS (V)IRESET, RESET SINK CURRENT (mA)0.1300.1250.1200.1150.1100.1050.100
−50VIN = 2.8 VCIN = 1 mFCOUT = 1 mF−25025507510010987654−50Figure 10. Detector Threshold Voltage
vs. Temperature
VIN = 1.8 VCIN = 1 mFCOUT = 1 mFRESET = 0.5 V−250255075100TA, AMBIENT TEMPERATURE (°C)TA, AMBIENT TEMPERATURE (°C)Figure 11. Dectector Threshold Hysteresis Voltagevs. TemperatureVThCD, CD PIN THRESHOLD VOLTAGE (V)IRESET, RESET SOURCE CURRENT (mA)9876543−50
1.000.990.980.970.960.95Figure 12. RESET Pin N−Channel Sink Currentvs. TemperatureVIN = 2.8 VCIN = 1 mFCOUT = 1 mF−25
0
25
50
75
100
VIN = 2.0 VCIN = 1 mFCOUT = 1 mF−25
0
25
50
75
100
0.94−50
TA, AMBIENT TEMPERATURE (°C)TA, AMBIENT TEMPERATURE (°C)
Figure 13. RESET Pin P−Channel Source Currentvs. TemperatureFigure 14. CD Delay Pin Threshold Voltage
vs. Temperature
http://onsemi.com
6
元器件交易网www.cecb2b.com
NCP400
TYPICAL CHARACTERISTICS
ICD_SOURCE, CD PIN SOURCE CURRENT (mA)ICD_SINK, CD PIN SINK CURRENT (mA)2.252.001.751.501.251.000.75−50
5148454239363330−50
VIN = 1.8 VVCD = 0.5 V−25
0
25
50
75
100
VIN = 2.8 VCIN = 1 mFCOUT = 1 mF−25
0
25
50
75
100
TA, AMBIENT TEMPERATURE (°C)TA, AMBIENT TEMPERATURE (°C)
Figure 15. CD Pin Source Current vs. Temperature
40GROUND PIN CURRENT (mA)35302520151050012345TA = 25°CCIN = 1 mFCOUT = 1 mFRESET, RESET PIN VOLTAGE (V)Figure 16. CD Pin Sink Current vs. Temperature
3.02.52.01.51.00.540TA = 25°C0.51.01.52.02.53.0VIN, INPUT VOLTAGE (V)VIN, INPUT VOLTAGE (V)Figure 17. Ground Pin Current vs. Input VoltageFigure 18. RESET Pin Voltage vs. Input VoltageICD, CD PIN SOURCE CURRENT (mA)2.5
ICD, CD PIN SINK CURRENT (mA)TA = 25°CCIN = 1 mFCOUT = 1 mF50TA = 25°C40302.0
1.5
1.0
201000.0
0.5
0.0
012345
0.51.01.52.02.53.0
VCD, DELAY PIN VOLTAGE (V)VIN, INPUT VOLTAGE (V)
Figure 19. Delay Pin Source Current vs. VoltageFigure 20. CD Pin Sink Current vs. Input Voltage
http://onsemi.com
7
元器件交易网www.cecb2b.com
NCP400
TYPICAL CHARACTERISTICS
IOUT, OUTPUT SOURCE CURRENT (mA)765
qJA, (°C/W)43210
VIN – 2.0 VVIN – 1.5 VVIN – 1.0 VVIN – 0.5 VTA = 25°C550
500
450
1 oz Cu400
2 oz Cu350
012345300
01020304050VIN, INPUT VOLTAGE (V)
PCB COPPER AREA (mm2)
Figure 21. Reset Output Source Current
vs. Input Voltage
Figure 22. qJA vs. Copper Area
http://onsemi.com
8
元器件交易网www.cecb2b.com
NCP400
OPERATION DESCRIPTION
Low Dropout Voltage Regulator
The low dropout voltage regulator contains a voltagereference unit, an error amplifier, a PMOS power transistor,resistors for setting output voltage, current limit and thermalshutdown protection circuits.
Enable Operation
The enable pin will turn on or off the regulator. The limitsof threshold are covered in the electrical specificationsection of this data sheet. If the enable is not used then thepin should be connected to Vin.
Voltage Detector
The NCP400 consist of a precision voltage detector thatdrives a time delay generator. Figures 23 and 24 show atiming diagram and a typical application. Initially considerthat input voltage Vin is at a nominal level and it is greaterthan the voltage detector upper threshold (VDET+). The
Input Voltage, Pin 1
VinVDET+VDET−
voltage at CD Pin (Pin 4) will be at the same level as Vin, andthe reset output (Pin 3) will be in the high state. If there is apower interruption and Vin becomes significantly deficient,it will fall below the lower detector threshold (VDET−) andthe external time delay capacitor CD will be immediatelydischarged by an internal N−Channel MOSFET thatconnects to Pin 4. This sequence of events causes the Resetoutput to be in the low state. After completion of the powerinterruption, Vin will again return to its nominal level andbecome greater than the VDET+. The voltage detector willturn off the N−Channel MOSFET and allow internal currentsource to charge the external capacitor CD, thus creating aprogrammable delay for releasing the reset signal. When thevoltage at CD Pin 4 exceeds the inverter threshold, typically0.97 V, the reset output will revert back to its original state.The detail reset output time delay calculation is shown inFigure 24.
Vin
Capacitor, Pin 4
0.97 V
Vin
Reset Output, Pin 3
VDET−
0 V
Figure 23. Timing diagram
http://onsemi.com
9
元器件交易网www.cecb2b.com
NCP400
APPLICATION NOTES
VIN
2.3 V+VHYS
2.3 V
0 V
DtRESET0 V
Figure 24. Timing Diagram
Delay Time:(Dt)+
(C DVThCD)
ICD
where:C is the CD pin capacitor
DVThCD is the delay threshold voltageICD is delay current source.
As target use C = 3300 pF and have ∆t = 2 ms:
With internal ∆VThCD = 0.97 V and ICD =1.56 mA, then
⇒Delay Time:(Dt)+
(3300pF 0.97V)
+2.05ms
1.56mA
http://onsemi.com
10
元器件交易网www.cecb2b.com
NCP400
APPLICATION INFORMATION
Low Dropout Voltage Regulator−Input Decoupling
A 1.0 mF capacitor either ceramic or tantalum isrecommended and should be connected close to the NCP400package. Higher values and lower ESR will improve theoverall line transient response.
−Output Decoupling
The NCP400 is a stable Regulator and does not requireany specific Equivalent Series Resistance (ESR) or a
100ESR, OUTPUT CAPACITOR (W)UNSTABLE10
minimum output current. Capacitors exhibiting ESRsranging from a few mW up to 10 W can thus safely be used.The minimum decoupling value is 1.0 mF and can beaugmented to fulfill stringent load transient requirements.The regulator accepts ceramic chip capacitors as well astantalum devices. Larger values improve noise rejection andload regulation transient response. Figure 25 shows thestable area of the regulator with different output capacitorESR and output current.
1
Cout = 1 mF TO 10 mFTA = 25°C to 125°CVin = up to 5.5 VSTABLEUNSTABLE0
25
50
75
100
125
150
IO, OUTPUT CURRENT (mA)
0.1
0.01
Figure 25. Output Capacitor versus Output Current
−Thermal Protection
Internal thermal shutdown circuit is provided to protectthe integrated circuit in the event that the maximum junctiontemperature is exceeded. When the thermal protectionactivated, higher than 150°C, the regulator turns off. Thisfeature is provided to prevent failures from accidentaloverheating.
−Hints
malfunction. Set external components, especially the outputcapacitor, as close as possible to the circuit, and make leadsa short as possible.
Voltage Detector
Please be sure the Vin and GND lines are sufficientlywide. When the impedance of these lines is high, there is achance to pick up noise or cause the regulator to
The voltage detector has built−in hysteresis to preventerratic reset operation. This device is specifically designedfor use as reset controllers in portable microprocessor basedsystems, it can offer a cost−effective solution in numerousapplications where precise voltage monitoring and timedelay are required. Figures 26 through 27 shows variousapplication examples.
http://onsemi.com
11
元器件交易网www.cecb2b.com
NCP400
APPLICATION CIRCUIT INFORMATION
2.346 V2.254 VVin < 2.254 ON14NCP400CD5GNDVIN3RESETTo Additional CircuitryVin > 2.346 ONFigure 26. Input Voltage Indicator1 mFCINENABLECDNCP400CVDDVINVOUT1 mFCOUTRESETRESETMicroprocessor/ Memory ChipGNDGNDDelayTime:(Dt)+
(C 0.97V)1.56mA
Figure 27. Microprocessor Reset Circuit
http://onsemi.com
12
元器件交易网www.cecb2b.com
NCP400
PACKAGE DIMENSIONS
6 PIN FLIP−CHIPCASE 499AH−01
ISSUE O
4 XD0.10CABTERMINAL A1LOCATORENOTES:
1.DIMENSIONING AND TOLERANCING PERASME Y14.5M, 1994.
2.CONTROLLING DIMENSION: MILLIMETERS.3.COPLANARITY APPLIES TO SPHERICALCROWNS OF SOLDER BALLS.
DIMAA1A2DEbeE1
MILLIMETERSMINMAX0.4480.5330.2100.2700.2380.2631.000 BSC1.50 BSC0.2900.3400.500 BSC1.000 BSC
TOP VIEWA20.10CA1CA0.05CSIDE VIEWSEATINGPLANEe6 XbCBA120.05CAB0.03CeE1BOTTOM VIEW
SOLDERING FOOTPRINT*
0.5000.01970.5000.01970.250 − 0.2750.0098 − 0.0108SCALE 20:1
1.00.0394mmǓǒinches*For additional information on our Pb−Free strategy and soldering
details, please download the ON Semiconductor Soldering andMounting Techniques Reference Manual, SOLDERRM/D.
http://onsemi.com
13
元器件交易网www.cecb2b.com
NCP400
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further noticeto any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liabilityarising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. Alloperating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rightsnor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applicationsintended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. ShouldBuyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or deathassociated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an EqualOpportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
N. American Technical Support: 800−282−9855 Toll FreeUSA/CanadaJapan: ON Semiconductor, Japan Customer Focus Center2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051Phone: 81−3−5773−3850http://onsemi.com14NCP400/D
因篇幅问题不能全部显示，请点此查看更多更全内容