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 D
2
PAK package.
Features
1
5
NCP630A
Tab = Ground
Pin 1. Shutdown
2. V
in
3. Ground
4. V
out
5. Adj
x
A
WL
Y
WW
G
NCP630G
Tab = Ground
Pin 1. Shutdown
2. V
in
3. Ground
4. V
out
5. Sense
http://onsemi.com
MARKING
DIAGRAM
D
2
PAK
D2T SUFFIX
CASE 936A
NC
P630xD2T
AWLYWWG
•
•
•
•
•
•
•
•
•
•
•
•
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
Pb−Free Packages are Available
Applications
Microprocessor Power Supplies
DSP Power Supplies
SMPS Post Regulation
Battery Chargers
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
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
−
Shutdown
V
in
V
out
R2
+
V
out
@3A
INPUT
C
in
+
68
mF
−
Shutdown
V
in
V
out
+
V
out
@3A
NCP630A
ADJ
GND
Co
33
mF
NCP630G
SENSE
GND
Co
33
mF
R1
10 kW
R2
+
R1
Vout
*
1
1.216
Figure 1. Typical Application Circuit for NCP630A
Figure 2. Typical Application Circuit for NCP630G
©
Semiconductor Components Industries, LLC, 2005
1
June, 2005 − Rev. 5
Publication Order Number:
NCP630/D
NCP630
MAXIMUM RATINGS
Rating
Input Voltage (Note 1)
Shutdown Voltage
Output Voltage
Output Short Circuit Duration (Note 2)
Power Dissipation and Thermal Characteristics
Case 936F (D
2
PAK)
Power Dissipation (Note 2)
Thermal Resistance, Junction−to−Ambient
Thermal Resistance, Junction−to−Case
Operating Junction Temperature Range
Storage Temperature Range
Lead Soldering Temperature @ 260°C
Symbol
V
in
Shutdown
V
out
−
Value
12
−0.3 to V
in
+ 0.3
−0.3 to V
in
+ 0.3
Infinite
Unit
V
V
V
−
P
D
R
q
JA
R
q
JC
T
J
T
stg
T
solder
Internally Limited
45
5.0
−40 to 125
−55 to 150
10
W
°C/W
°C/W
°C
°C
sec
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. This device series contains ESD protection and exceeds the following tests:
Human Body Model JESD 22−A114−B
Machine Model JESD 22−A115−A
2. The maximum package power dissipation is:
*
T
T
J(max)
A
P
+
D
R
qJA
PIN FUNCTION DESCRIPTION
Pin No.
1
NCP630A
Shutdown
NCP630G
Shutdown
Description
This input is used to place the NCP630 into shutdown mode. The NCP630
is active when a voltage greater than 2.0 V is applied. The NCP630 will be
placed into a shutdown mode when a voltage less than 0.8 V is applied. If
left unused then connect the pin high.
Positive power supply input voltage
Power supply ground
Regulated output voltage
This pin is to be Connected to the R
sense
resistors on the output. It main-
tains 1.216 V between itself and ground. Refer to Figure 1 for equation.
This pin is to be connected near the load for better regulation.
2
3, Tab
4
5
5
V
in
Ground
V
out
Adj
−
V
in
Ground
V
out
−
Sense
http://onsemi.com
2
NCP630
ELECTRICAL CHARACTERISTICS
(C
in
= 68
mF,
C
out
= 33
mF,
V
in
= V
out
+ 1.5 V, I
out
= 10 mA, for typical value T
J
= 25°C, for min
and max values T
J
= −40°C to 125°C unless otherwise noted.)
Characteristic
NCP630A
Reference Voltage
(V
in
= V
out
+ 1.5 V to 7.0 V, I
out
= 10 mA to 3.0 A, T
J
= 25°C)
(V
in
= V
out
+ 1.5 V to 7.0 V, I
out
= 10 mA to 3.0 A, T
J
= −40°C to 125°C)
Line Regulation (Notes 3 and 4)
(V
in
= V
out
+ 1.5 V to 7.0 V, T
J
= 25°C)
(V
in
= V
out
+ 1.5 V to 7.0 V, T
J
= −40°C to 125°C)
Load Regulation (Notes 3 and 4)
(I
out
= 10 mA to 3.0 A, T
J
= 25°C)
(I
out
= 10 mA to 3.0 A, T
J
= −40°C to 125°C)
Dropout Voltage (Measured at V
out
– 2%)
(I
out
= 300 mA)
(I
out
= 3.0 A)
Ground Pin Current in Normal Mode
(I
out
= 300 mA)
(I
out
= 3.0 A)
Ground Pin Current in Shutdown Mode
(V
shutdown
= 0.8 V)
Peak Output Limit
Short Current Limit (Note 5)
Thermal Shutdown
Shutdown Input Threshold Voltage
(Voltage Increasing, Output Turns On, Logic High)
(Voltage Decreasing, Output Turns Off, Logic Low)
Turn−off Delay, I
out
= 3.0 A
Turn−on Delay, I
out
= 3.0 A
Shutdown Input Low Current (V
Shutdown
= 0.8 V),
(Negative current flows out of pin)
Shutdown Input High Current (V
Shutdown
= 2.0 V),
(Negative current flows out of pin)
Ripple Rejection
(C
out
= 100
mF,
f = 1.0 kHz)
Output Noise Density (f = 120 Hz)
Output Noise Voltage
(f = 20 Hz – 100 kHz)
V
adj
1.198
1.180
Reg
line
−
−
Reg
load
−
−
V
in
−V
out
−
−
I
Gnd
−
−
I
Gnd
−
I
out
I
SC
−
Vt
th(shutdown)
2.0
−
T
D(off)
T
D(on)
I
IL
I
IH
RR
−
−
Vn
−
210
−
−
85
0.6
−
−
mV
Hz
−
−
−10
−10
−
−
20
25
−5.0
−4.5
−
0.8
−
−
−1.0
−1.0
ms
ms
mA
mA
dB
3.0
−
−
15
6.0
6.5
165
50
−
−
−
A
A
°C
V
0.4
1.0
1.0
2.0
mA
0.75
1.0
1.0
1.25
mA
0.01
0.06
−
−
V
0.02
0.06
−
−
%
1.216
−
1.234
1.253
%
V
Symbol
Min
Typ
Max
Unit
mV
rms
3. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
4. Line regulation is defined as the change in output voltage for a change in input voltage. Load regulation is defined as the change in output
voltage for a change in output load current at a constant temperature. The limits for line and load regulation are contained within the refer-
ence voltage specification, V
adj
. Typical numbers are included in the specification for line and load regulation.
5. The short circuit limit is for device protection. Maximum output current is guaranteed to be greater or equal to 3.0 A with a 6.0 A typical
as listed in the peak output limit specification.
http://onsemi.com
3
NCP630
ELECTRICAL CHARACTERISTICS
(C
in
= 68
mF,
C
out
= 33
mF,
V
in
= V
out
+ 1.5 V, I
out
= 10 mA, for typical value T
J
= 25°C, for min
and max values T
J
= 0°C to 125°C unless otherwise noted.)
Characteristic
NCP630G
Output Voltage
(V
in
= 5.0 V to 7.0 V, I
out
= 10 mA to 3.0 A, T
J
= 25°C)
(V
in
= 5.0 V to 7.0 V, I
out
= 10 mA to 3.0 A, T
J
= 0°C to 125°C)
Line Regulation (Notes 6 and 7)
(V
in
= 5.0 V to 7.0 V, T
J
= 25°C)
(V
in
= 5.0 V to 7.0 V, T
J
= 0°C to 125°C)
Load Regulation (Notes 6 and 7)
(I
out
= 10 mA to 3.0 A, T
J
= 25°C)
(I
out
= 10 mA to 3.0 A, T
J
= 0°C to 125°C)
Dropout Voltage (Measured at V
out
– 2%)
(I
out
= 300 mA)
(I
out
= 3.0 A)
Ground Pin Current in Normal Mode
(I
out
= 300 mA)
(I
out
= 3.0 A)
Ground Pin Current in Shutdown Mode
(V
shutdown
= 0.8 V)
Peak Output Limit
Short Current Limit (Note 8)
Thermal Shutdown
Shutdown Input Threshold Voltage
(Voltage Increasing, Output Turns On, Logic High)
(Voltage Decreasing, Output Turns Off, Logic Low)
Turn−off Delay, I
out
= 3.0 A
Turn−on Delay, I
out
= 3.0 A
Shutdown Input Low Current (V
in
= 0.8 V),
(Negative current flows out of pin)
Shutdown Input High Current (V
in
= 2.0 V),
(Negative current flows out of pin)
Ripple Rejection
(C
out
= 100
mF,
f = 1.0 kHz)
Output Noise Density (f = 120 Hz)
Output Noise Voltage
(f = 10 Hz – 100 kHz)
V
out
3.418
3.383
Reg
line
−
−
Reg
load
−
−
V
in
−V
out
−
−
I
Gnd
−
−
I
Gnd
−
I
out
I
SC
−
Vt
th(shutdown)
2.0
−
T
D(off)
T
D(on)
I
IL
I
IH
RR
−
−
Vn
−
210
−
−
85
0.6
−
−
mV
Hz
−
−
−10
−10
−
−
20
25
−5.0
−4.5
−
0.8
−
−
−1.0
−1.0
ms
ms
mA
mA
dB
3.0
−
−
26
5.0
5.0
165
50
−
−
−
A
A
°C
V
0.4
1.0
1.0
2.0
mA
0.75
1.0
1.0
1.25
mA
0.01
0.06
−
−
V
0.02
0.06
−
−
%
3.470
−
3.522
3.557
%
V
Symbol
Min
Typ
Max
Unit
mV
rms
6. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
7. Line regulation is defined as the change in output voltage for a change in input voltage. Load regulation is defined as the change in output
voltage for a change in output load current at a constant temperature. The limits for line and load regulation are contained within the output
voltage specification, V
out
. Typical numbers are included in the specification for line and load regulation.
8. The short circuit limit is for device protection. Maximum output current is guaranteed to be greater or equal to 3.0 A with a 5.0 A typical
as listed in the peak output limit specification.
http://onsemi.com
4
NCP630
TYPICAL CHARACTERISTICS
3.480
V
OUT
, OUTPUT VOLTAGE (V)
3.475
3.470
3.465
3.460
3.455
3.450
−40
I
SC
, SHORT CIRCUIT CURRENT LIMIT (A)
9
8
7
6
5
4
3
2
1
0
−40
−20
0
20
40
60
80
100 120
−20
0
20
40
60
80
100
120
T
A
, AMBIENT TEMPERATURE (°C)
T
A
, AMBIENT TEMPERATURE (°C)
Figure 3. Output Voltage versus Temperature
1.2
I
GND
, GROUND CURRENT (mA)
1
0.8
I
OUT
= 300 mA
0.6
0.4
0.2
0
−40
I
OUT
= 3.0 A
1.8
1.6
1.4
1.2
1
0.8
0.6
0.4
0.2
0
−40
Figure 4. Short Circuit Current Limit versus
Temperature
V
IN
= V
OUT
+ 1.5 V
V
SD
= V
IN
V
IN
− V
OUT
, DROPOUT VOLTAGE (V)
I
OUT
= 3.0 A
I
OUT
= 300 mA
−20
0
20
40
60
80
100
120
−20
0
20
40
60
80
100
120
T
A
, TEMPERATURE (°C)
T
A
, AMBIENT TEMPERATURE (°C)
Figure 5. Dropout Voltage versus Temperature
Figure 6. Ground Current versus Temperature
40
V
OUT
, OUTPUT
VOLTAGE (V)
I
GND
, GROUND CURRENT (mA)
35
30
25
20
SHUTDOWN
VOLTAGE (V)
15
10
5
0
−60 −40 −20
0
20
40
60
80
100 120 140
V
IN
= V
OUT
+ 1.5 V
V
SD
= 0 V
4
3
2
1
0
C
OUT
= 100
mF
R
L
= 3.5
W
3
2
1
0
0
20
40
60
TIME (ms)
80
100
120
T
A
, AMBIENT TEMPERATURE (°C)
Figure 7. Ground Pin Current in Shutdown
Mode versus Temperature
Figure 8. Start−up Transient
http://onsemi.com
5
京公网安备 11010802033920号
EEWORLD
