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PDF NCP400 Data sheet ( Hoja de datos )

Número de pieza NCP400
Descripción CMOS Low Iq Low-Dropout Voltage Regulator
Fabricantes ON Semiconductor 
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No Preview Available ! NCP400 Hoja de datos, Descripción, Manual

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NCP400
150 mA CMOS Low Iq
Low−Dropout Voltage
Regulator with Voltage
Detector Output
The NCP400 is an integration of a low−dropout regulator and a
voltage detector in a very small chip scale package. The voltage
regulator is capable of supplying 150 mA with a low dropout of 160 mV
at 100 mA. It contains a voltage reference unit, an error amplifier,
comparators, PMOS power transistor, current limit and thermal
shutdown protection circuits for the regulator portion.
A highly accurate voltage detector with hysteresis and an externally
programmable time delay generator are implemented to prevent
erratic system reset operation. It features complementary output with
active low reset function.
The NCP400 is designed to work with low cost ceramic capacitors
and requires only a small 1.0 mF capacitor at regulator output. Its low
quiescent current is ideal for battery powered applications.
Features
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
Memory Cards
Cellular Phones
Digital Still Cameras and Camcorders
Battery Powered Equipment
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MARKING
DIAGRAM
6 Bump
Flip−Chip
FC SUFFIX
ÈA1
400
ALYW
A1 CASE 499AH
400 = Device Code
A = Assembly Location
L = Wafer Lot
Y = Year
W = Work Week
PIN CONNECTIONS
VOUT 6
GND 5
1 VIN
2 ENABLE
CD 4
3 RESET
(Bottom View)
ORDERING INFORMATION
Device
Package
Shipping
NCP400FCT2G Flip−Chip 3000 Tape & Reel
(Pb−Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specifications
Brochure, BRD8011/D.
© Semiconductor Components Industries, LLC, 2005
April, 2005 − Rev. 3
1
Publication Order Number:
NCP400/D

1 page




NCP400 pdf
VIN = 3.3 V
TA = 25°C
IOUT = 1 mA
CIN = 1 mF
NCP400
TYPICAL CHARACTERISTICS
Upper Trace: Input Voltage 1 V/div
Lower Trace: Output Voltage 1 V/div
Figure 3. Turn−ON Response
Upper Trace: Input voltage 2 V/div
Lower Trace: Output voltage 50 mV/div
Figure 4. Line Transient Response
IOUT = 150 mA to 1 mA,VIN = 3.3 V, CIN = 1 mF
Upper Trace: Output Voltage 200 mV/div
Lower Trace: Output Loading Current 100 mA/div
Figure 5. Load Transient Response
IOUT = 1 mA to 150 mA,VIN = 3.3 V,CIN = 1 µF
Upper Trace: Output Voltage 200 mV/div
Lower Trace: Output Loading Current 100 mA/div
Figure 6. Load Transient Response
1.815
1.810
1.805
VIN = 2.8 V
CIN = 1 mF
COUT = 1 mF
1.800
1.795
1.790
1.785
−50 −25 0 25 50 75 100
TA, AMBIENT TEMPERATURE (°C)
Figure 7. Output Voltage vs. Temperature
56
VIN = 2.8 V
54 CIN = 1 mF
COUT = 1 mF
52
50
48
46
44
−50
−25 0 25 50 75
TA, AMBIENT TEMPERATURE (°C)
Figure 8. Quiescent Current (Enable)
vs. Temperature
100
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NCP400 arduino
NCP400
APPLICATION INFORMATION
Low Dropout Voltage Regulator
−Input Decoupling
A 1.0 mF capacitor either ceramic or tantalum is
recommended and should be connected close to the NCP400
package. Higher values and lower ESR will improve the
overall line transient response.
−Output Decoupling
The NCP400 is a stable Regulator and does not require
any specific Equivalent Series Resistance (ESR) or a
minimum output current. Capacitors exhibiting ESRs
ranging from a few mW up to 10 W can thus safely be used.
The minimum decoupling value is 1.0 mF and can be
augmented to fulfill stringent load transient requirements.
The regulator accepts ceramic chip capacitors as well as
tantalum devices. Larger values improve noise rejection and
load regulation transient response. Figure 25 shows the
stable area of the regulator with different output capacitor
ESR and output current.
100
UNSTABLE
10
1 Cout = 1 mF TO 10 mF
TA = 25°C to 125°C
Vin = up to 5.5 V
0.1 STABLE
0.01
0
UNSTABLE
25 50 75
100 125 150
IO, OUTPUT CURRENT (mA)
Figure 25. Output Capacitor versus Output Current
−Thermal Protection
Internal thermal shutdown circuit is provided to protect
the integrated circuit in the event that the maximum junction
temperature is exceeded. When the thermal protection
activated, higher than 150°C, the regulator turns off. This
feature is provided to prevent failures from accidental
overheating.
−Hints
Please be sure the Vin and GND lines are sufficiently
wide. When the impedance of these lines is high, there is a
chance to pick up noise or cause the regulator to
malfunction. Set external components, especially the output
capacitor, as close as possible to the circuit, and make leads
a short as possible.
Voltage Detector
The voltage detector has built−in hysteresis to prevent
erratic reset operation. This device is specifically designed
for use as reset controllers in portable microprocessor based
systems, it can offer a cost−effective solution in numerous
applications where precise voltage monitoring and time
delay are required. Figures 26 through 27 shows various
application examples.
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