NCP630 Datasheet, PDF (1/10 Pages) ON Semiconductor – 3.0 A Fast Linear Voltage Regulators

NCP630
3.0 A Fast Linear Voltage
Regulators
The NCP630 is a low dropout positive voltage regulator that is
capable of providing a guaranteed output current of 3.0 A with a
maximum dropout voltage of 1.25 V at 3.0 A over temperature. The
fast turn on time allows step changes in loads commonly found in low
voltage microprocessor applications. The NCP630 is currently offered
as an adjustable output version that can be programmed down to 1.2 V
with two external resistors and as a fixed output version at 3.47 V. On
chip trimming adjusts the reference/output voltage to within "1.5%
accuracy. Internal protection features consist of output current limiting
and thermal shutdown. NCP630 is available in D²PAK package.
Features
• Output Current of 3.0 A
• 1.25 V Maximum Dropout Voltage at 3.0 A Over Temperature
• Voltage on Shutdown Pin is TTL Compatible
• Reference/Output Voltage Trimmed to "1.5%
• Current Limit Protection
• Thermal Shutdown Protection
• -40 °C to 125°C Junction Temperature Range
Applications
• Microprocessor Power Supplies
• DSP Power Supplies
• SMPS Post Regulation
• Battery Chargers
http://onsemi.com
MARKING
DIAGRAM
1
5
D²PAK
D2T SUFFIX
CASE 936A
xx
AWLYWW
NCP630A
Tab = Ground
Pin 1. Shutdown
2. V_in
3. Ground
4. V_out
5. Adj
NCP630G
Tab = Ground
Pin 1. Shutdown
2. V_in
3. Ground
4. V_out
5. Sense
xx = Specific Device Code
A = Assembly Location
WL = Wafer Lot
Y = Year
WW = Work Week
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
INPUT
C_in ⁺
68 mF _-
V_in
V_out
Shutdown
NCP630A
ADJ
GND
ǒ Ǔ R2 + R1
Vout
1.216
*
1
+
R2
R1
10 kW
V_out
@3A
Co
33 mF
INPUT
C_in ⁺
68 mF _-
V_in
V_out
Shutdown
NCP630G
SENSE
GND
V_out
+
@3A
Co
33 mF
Figure 1. Typical Application Circuit for NCP630A
Figure 2. Typical Application Circuit for NCP630G
© Semiconductor Components Industries, LLC, 2003
1
January, 2003 - Rev. 3
Publication Order Number:
NCP630/D