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