NCP623 ON, NCP623 Datasheet

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NCP623

Manufacturer Part Number
NCP623
Description
Ultra Low Noise 150 mA Low Dropout Voltage Regulator with ON/OFF Control
Manufacturer
ON
Datasheet

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NCP623
Ultra Low Noise
150 mA Low Dropout
Voltage Regulator with
ON/OFF Control
150 mA where it exhibits a typical 180 mV dropout. With an
incredible noise level of 25 mVRMS (over 100 Hz to 100 kHz, with a
10 nF bypass capacitor), the NCP623 represents the ideal choice for
sensitive circuits, especially in portable applications where noise
performance and space are premium. The NCP623 also excels in
response time and reacts in less than 25 ms when receiving an OFF to
ON signal (with no bypass capacitor).
any restrictions regarding their Equivalent Series Resistance (ESR) thus
offering an obvious versatility for immediate implementation.
1.0 kHz), it naturally shields the downstream electronics against
choppy power lines.
provide the final product with a high degree of ruggedness.
Features
Applications
August, 2004 − Rev. 0
Housed in a Micro8t or QFN6 package, the NCP623 delivers up to
Due to a novel concept, the NCP623 accepts output capacitors without
With a typical DC ripple rejection better than −90 dB (−70 dB @
Additionally, thermal shutdown and short−circuit protection
(OFF, no load)
Current of 100 mA
Typically 25 mVrms over 100 Hz to 100 kHz
Telephones, Radio Control Systems, Toys and Low Voltage Systems
Very Low Quiescent Current 170 mA (ON, no load), 100 nA
Very Low Dropout Voltage, Typical Value is 137 mV at an Output
Very Low Noise with External Bypass Capacitor (10 nF),
Internal Thermal Shutdown
Extremely Tight Line Regulation Typically −90 dB
Ripple Rejection −70 dB @ 1.0 kHz
Line Transient Response: 1.0 mV for DV
Extremely Tight Load Regulation, Typically 20 mV at DI
Multiple Output Voltages Available
Logic Level ON/OFF Control (TTL−CMOS Compatible)
ESR can vary from 0 to 3.0 W
All Portable Systems, Battery Powered Systems, Cellular
Semiconductor Components Industries, LLC, 2004
in
= 3.0 V
out
1
= 150 mA
See detailed ordering and shipping information on page 12 of
this data sheet.
ON/OFF
Bypass
NC
NC
1
1
V
GND
ORDERING INFORMATION
OUT
V
IN
XXX = Specific Device Code
yy
A
L
Y
W
PIN CONNECTIONS
http://onsemi.com
http://onsemi.com
1
2
3
4
CASE 488AE
DM SUFFIX
CASE 846A
MN SUFFIX
= Voltage Option
= Assembly Location
= Wafer Lot
= Year
= Work Week
QFN6, 3X3
(Top View)
(Top View)
Micro8
Micro8
1
2
3
QFN6
Publication Order Number:
6
5
4
8
7
6
5
DIAGRAMS
ON/OFF
GND
Bypass
MARKING
8
1
ALYW
AYW
NCP6
NCP623/D
XXX
23yy
V
GND
GND
V
OUT
IN

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NCP623 Summary of contents

Page 1

... Low Dropout Voltage Regulator with ON/OFF Control Housed in a Micro8t or QFN6 package, the NCP623 delivers up to 150 mA where it exhibits a typical 180 mV dropout. With an incredible noise level of 25 mVRMS (over 100 Hz to 100 kHz, with bypass capacitor), the NCP623 represents the ideal choice for sensitive circuits, especially in portable applications where noise performance and space are premium ...

Page 2

... If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. NCP623 Thermal ON/OFF Shutdown Band Gap Reference * Current Limit * Antisaturation * Protection Figure 1. NCP623 Block Diagram Symbol http://onsemi.com OUT GND Value Unit V ...

Page 3

... ON/OFF Signal to 99% of Nominal Output Voltage Without Bypass Capacitor With C bypass THERMAL SHUTDOWN Thermal Shutdown (All versions (Output Current) is the measured current when the output voltage drops below 0.3 V with respect to V out NCP623 (For typical values for min/max values T A Symbol V ON/OFF I ON/OFF ...

Page 4

... Then you can calculate the power dissipation by subtracting the output power from the input power. All variables are then well known: power dissipation, thermal shutdown temperature (150 C for NCP623) and ambient temperature. http://onsemi.com ...

Page 5

... The maximum dissipation the package can handle is given by: T – T Jmax A P max + R qJA internally limited to 150 C, then the NCP623 can Jmax dissipate up to 595 The power dissipated by the NCP623 can be calculated from the following formula: Ptot + out ) ) V in gnd ...

Page 6

... NCP623 Wake−up Improvement − In portable applications, an immediate response to an enable signal is vital. If noise is not of concern, the NCP623 without a bypass capacitor settles in nearly 20 ms and typically delivers 65 mVRMS between 100 Hz and 100 kHz. In ultra low−noise systems, the designer needs bypass capacitor to decrease the noise down to 25 mVRMS between 100 Hz and 100 kHz ...

Page 7

... Figure 7. Noise Density of the NCP623 with Bypass Capacitor and a Wake−up Improvement Network NCP623 area which reaches a typical noise level of 26 mVRMS (100 Hz to 100 kHz ...

Page 8

... Line Transient Response and Output Voltage 200 190 180 170 160 150 140 130 120 110 100 −40 − TEMPERATURE ( C) Figure 10. Quiescent Current versus Temperature NCP623 Ground Current Performances 2.1 2.05 2.0 1.95 1.9 1.85 1.8 160 180 200 −40 −20 AMBIENT TEMPERATURE ( C) Figure 9. Ground Current versus Ambient V = 3 1.0 mV/div ...

Page 9

... mA/div mV/div X = 100 amb Y1: OUTPUT CURRENT, Y2: OUTPUT VOLTAGE Figure 14 6.0 mA/ms (Large Scale) Slope 150 mA out NCP623 3 mA/div mV/div amb Y1: OUTPUT CURRENT, Y2: OUTPUT VOLTAGE Figure 13 100 mA/ms (Large Scale) ...

Page 10

... BYPASS CAPACITOR (nF) Figure 18. Output Voltage Settling Time versus Bypass Capacitor 100 ms/div 500 mV/div C = 3.3 nF byp Figure 20. Output Voltage Settling Shape C = 3.3 nF bypass NCP623 Noise Performances 3 2 out = 1 out amb ...

Page 11

... amb −50 −60 −70 −80 −90 −100 100 1000 FREQUENCY (Hz) Figure 26. Ripple Rejection versus Frequency with 10 nF Bypass Capacitor NCP623 Dropout Voltage 250 200 150 −40 C 100 50 0 100 150 −40 −20 Figure 23. Dropout Voltage versus Temperature ...

Page 12

... NCP623DM−3.3R2 NCP623DM−4.0R2 NCP623DM−5.0R2 NCP623MN−3.3R2 NCP623MN−4.0R2 NCP623MN−5.0R2 †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. NCP623 Version Package 3 ...

Page 13

... 0.08 (0.003) SEATING PLANE −T− 0.038 (0.0015 NCP623 Micro8 DM SUFFIX CASE 846A−02 ISSUE F NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0 ...

Page 14

... COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. MILLIMETERS D2 DIM MIN MAX A 0.80 1.00 A1 0.00 0.05 A3 0.20 REF b 0.18 0.30 D 3.00 BSC D2 2.25 2.55 E 3.00 BSC E2 1.55 1.85 e 0.65 BSC K 0.20 −−− L 0.30 0.50 ON Semiconductor Website: http://onsemi.com Order Literature: http://www.onsemi.com/litorder For additional information, please contact your local Sales Representative. NCP623/D ...

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