NCP5661 Datasheet, PDF (1/12 Pages) ON Semiconductor – Low Output Voltage,Ultra-Fast 1.0 A Low Dropout Linear Regulator with Enable

NCP5661
Low Output Voltage,
Ultra−Fast 1.0 A Low Dropout
Linear Regulator with Enable
The NCP5661 is a high performance, low dropout linear regulator
designed for high power applications that require up to 1.0 A current.
It is offered in both fixed and adjustable output versions. With output
voltages as low as 0.9 V and ultra−fast response times for load
transients, the NCP5661 also provides additional features such as
Enable and Error Flag (for the fixed output version), increasing the
utility of this device. A thermally robust, 5 pin DPAK, combined with
an architecture that offers low ground current (independent of load),
provides for a superior high−current LDO solution.
Features
• Ultra−Fast Transient Response (Settling Time: 1−3 ms)
• Low Noise Without Bypass Capacitor (26 mV_rms)
• Low Ground Current Independent of Load (3.0 mA Maximum)
• Fixed/Adjustable Output Voltage Versions
• Enable Function
• Error Flag (Fixed Output Version)
• Current Limit Protection
• Thermal Protection
• 0.9 V Reference Voltage for Ultra−Low Output Operation
• Power Supply Rejection Ratio > 65 dB
• These are Pb−Free Devices
Applications
• Servers
• ASIC Power Supplies
• Post Regulation for Power Supplies
• Constant Current Source
• Networking Equipment
• Gaming and STB Modules
http://onsemi.com
MARKING
DIAGRAM
1
5
661xG
ALYWW
DPAK−5
CENTER LEAD CROP
CASE 175AA
Tab = Ground
Pin: 1. Enable
2. V_in
3. Ground
4. V_out
5. Adj (Adjustable Output)
5. Error Flag (Fixed Output)
x = A for Adjustable Version
B for Fixed 1.2 V
C for Fixed 3.3 V
A = Assembly Location
L = Wafer Lot
Y = Year
WW = Work Week
G = Pb−Free
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 10 of this data sheet.
© Semiconductor Components Industries, LLC, 2005
1
July, 2005 − Rev. 3
Publication Order Number:
NCP5661/D