NCP4569
300 mA CMOS LDO with
Shutdown and V
REF
Bypass
The NCP4569 is a fixed output, high accuracy (typically
"0.5%)
CMOS upgrade for older (bipolar) low dropout regulators. Total
supply current is typically 50
碌A(chǔ)
at full load (20 to 60 times lower than
in bipolar regulators).
NCP4569 key features include ultra low noise operation (plus
optional Bypass input); very low dropout voltage (typically 240 mV at
full load), and fast response to step changes in load. Supply current is
reduced to 0.05
碌A(chǔ)
(typical) and V
OUT
falls to zero when the
shutdown input is low.
The NCP4569 incorporates both over鈥搕emperature and over鈥揷urrent
protection. The NCP4569 is stable with an output capacitor of only
1.0
碌F
and has a maximum output current of 300 mA.
Zero Ground Current for Longer Battery Life
Very Low Dropout Voltage
Guaranteed 300 mA Output
High Output Voltage Accuracy
Standard or Custom Output Voltages
Power鈥揝aving Shutdown Mode
Bypass Input for Ultra鈥換uiet Operation
Over鈥揅urrent and Over鈥揟emperature Protection
Space鈥揝aving Micro鈥? Package
Battery鈥揙perated Systems
Portable Computers
Medical Instruments
Instrumentation
Cellular/GSM/PHS Phones
Linear Post鈥揜egulator for SMPS
Pagers
Digital Cameras
1
+
C1
1
碌F
8
http://onsemi.com
8
MICRO鈥?
DM SUFFIX
CASE 846A
1
Features
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PIN CONFIGURATION
V
OUT
1
NC 2
NC 3
GND 4
(Top View)
8 V
IN
7 SHDN
6 NC
5 Bypass
Applications
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
V
OUT
V
OUT
V
IN
V
IN
2
NC
3
NC
4
GND
Bypass
NC
SHDN
7
Shutdown Control
(from Power
Control Logic)
6
C
Bypass
470 pF
(Optional)
Figure 1. Typical Application
漏
Semiconductor Components Industries, LLC, 2001
1
February, 2001 鈥?Rev. 0
Publication Order Number:
NCP4569/D
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