NCP5661DT12RKG [ONSEMI]
Low Output Voltage,Ultra−Fast 1.0 A Low Dropout Linear Regulator with Enable; 低输出电压，超快1.0低压差线性稳压器具有使能
| 型号： | NCP5661DT12RKG |
| 厂家： | 
ONSEMI |
| 描述： | Low Output Voltage,Ultra−Fast 1.0 A Low Dropout Linear Regulator with Enable |
| 文件： | 总12页 (文件大小：112K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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.
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MARKING
DIAGRAM
661xG
ALYWW
1
5
DPAK−5
CENTER LEAD CROP
CASE 175AA
Features
• Ultra−Fast Transient Response (Settling Time: 1−3 ms)
• Low Noise Without Bypass Capacitor (26 mV
• 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
rms)
Tab = Ground
Pin: 1. Enable
2. V
3. Ground
4. V
5. Adj (Adjustable Output)
5. Error Flag (Fixed Output)
in
out
x
= A for Adjustable Version
B for Fixed 1.2 V
C for Fixed 3.3 V
= Assembly Location
= Wafer Lot
A
L
Y
= Year
Applications
WW = Work Week
= Pb−Free
G
• Servers
• ASIC Power Supplies
• Post Regulation for Power Supplies
• Constant Current Source
• Networking Equipment
• Gaming and STB Modules
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
Publication Order Number:
July, 2005 − Rev. 3
NCP5661/D
NCP5661
PIN FUNCTION DESCRIPTION
Pin
Adj/Fixed
Pin Name
Description
This pin allows for on/off control of the regulator. To disable the device, connect to Ground. If this
1
Enable
function is not in use, connect to V .
in
2
3
4
5
V
Positive Power Supply Input Voltage
in
Ground
Power Supply Ground
V
out
Regulated Output Voltage
Adj
This pin is connected to the resistor divider network and programs the output voltage.
(Adjustable Version)
5
Error Flag
(Fixed Version)
An Error Flag is triggered when the output voltage is out of regulation excluding transient signals
that may occur. Requires a pullup resistor f 100 kW.
MAXIMUM RATINGS
Rating
Symbol
Value
18
Unit
V
Input Voltage
V
in
Output Pin Voltage
Adjust Pin Voltage
Enable Pin Voltage
Error Flag Voltage
Error Flag Current
Thermal Characteristics
V
−0.3 to Vin +0.3
−0.3 to Vin +0.3
−0.3 to Vin +0.3
−0.3 to Vin +0.3
3.0
V
out
V
adj
V
V
V
en
V
V
ef
I
mA
°C/W
ef
Thermal Resistance, Junction−to−Air
Thermal Resistance, Junction−to−Case
R
100
8.0
θ
JA
JC
R
θ
Operating Junction Temperature Range
Storage Temperature Range
T
−40 to +150
−55 to +150
°C
°C
J
T
stg
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.
NOTE: This device series contains ESD protection and exceeds the following tests:
Human Body Model (HBM) JESD 22−A114−B
Machine Model (MM) JESD 22−A115−A.
The maximum package power dissipation is:
T
* T
J(max)
A
P
+
D
R
qJA
The bipolar process employed for this IC is fully characterized and rated for reliable 18 V V
operation. To avoid damaging
CCmax
the part or degrading it’s reliability, power dissipation transients should be limited to under 20 W for DPAK.
For open−circuit to short−circuit transient,
P
= V
* I
.
SC
DTransient
CCmax
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2
NCP5661
ELECTRICAL CHARACTERISTICS
(V − V = 1.5 V, for typical values T = 25°C, for min/max values T = −40°C to 125°C, C = C = 150 mF unless otherwise noted.)
in
out
J
J
in
out
Characteristic
Symbol
Min
Typ
Max
Unit
ADJUSTABLE OUTPUT VERSION
Input Voltage
V
2.0
−
−
9.0
−
V
in
Output Noise Voltage
V
26
mV
rms
n
Output Voltage Accuracy
V
out
V
T = 25°C (I = 10 mA to 1.0 A)
−1%
−1.5%
−2%
−
0.9
+1%
+1.5%
+2%
J
out
T = −20 to +125°C (I = 10 mA to 1.0 A)
J
out
−
T = −40 to +150°C (I = 10 mA to 1.0 A)
J
out
Adjustable Pin Input Current
Line Regulation (I = 10 mA, V +1.5 V < V < 7.0 V)
I
−
−
40
0.03
0.03
1.0
−
−
−
nA
%
%
V
adj
REG
out
out
in
line
Load Regulation (10 mA < I < 1.0 A)
REG
−
−
out
load
Dropout Voltage (I = 1.0 A)
V
−
1.3
−
out
DO
Peak Output Current Limit
Internal Current Limitation
I
1.0
−
A
out
I
1.5
−
A
lim
Ripple Rejection (120 Hz)
Ripple Rejection (1.0 kHz)
RR
−
−
70
65
−
−
dB
Thermal Shutdown (Guaranteed by Design)
Ground Current
T
−
160
−
°C
SHD
I
= 1.0 A
I
−
−
1.3
10
3.0
300
mA
mA
out
q
Disabled State
I
qds
Enable Input Threshold Voltage
V
en
V
Voltage Increasing, On State, Logic High
Voltage Decreasing, Off State, Logic Low
1.3
−
−
−
−
0.3
Enable Input Current
I
mA
en
Enable Pin Voltage = 0.3 V
−
−
0.5
0.5
−
−
max
Enable Pin Voltage = 1.3 V
min
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3
NCP5661
ELECTRICAL CHARACTERISTICS
(V − V = 1.5 V, for typical values T = 25°C, for min/max values T = −40°C to 125°C, C = C = 150 mF unless otherwise noted.)
in
out
J
J
in
out
Characteristic
Symbol
Min
Typ
Max
Unit
FIXED OUTPUT VOLTAGE
Input Voltage
V
2.0
−
−
9.0
−
V
in
Output Noise Voltage (V = 0.9 V)
V
26
mV
rms
out
n
Output Voltage Accuracy (Note 1)
V
out
V
T = 25°C (I = 10 mA to 1.0 A)
−1%
−1.5%
−2%
−
+1%
+1.5%
+2%
J
out
V
out
T = −20 to +125°C (I = 10 mA to 1.0 A)
J
out
−
T = −40 to +150°C (I = 10 mA to 1.0 A)
J
out
Line Regulation (I = 10 mA, V +1.5 V < V < 7.0 V)
REG
−
−
0.03
0.2
1.0
−
−
−
%
%
V
out
out
in
line
Load Regulation (10 mA < I < 1.0 A)
REG
load
out
Dropout Voltage (I = 1.0 A)
V
−
1.3
−
out
DO
Peak Output Current Limit
Internal Current Limitation
I
1.0
−
A
out
I
1.5
−
A
lim
Ripple Rejection (120 Hz)
Ripple Rejection (1.0 kHz)
RR
−
−
70
65
−
−
dB
Thermal Shutdown (Guaranteed by Design)
Ground Current
T
−
160
−
°C
SHD
I
= 1.0 A
I
−
−
1.3
30
3.0
300
mA
mA
out
q
Disabled State
I
qds
Enable Input Threshold Voltage
V
en
V
Voltage Increasing, On State, Logic High
Voltage Decreasing, Off State, Logic Low
1.3
−
−
−
−
0.3
Enable Input Current
I
en
mA
Enable Pin Voltage = 0.3 V
−
−
0.5
0.5
−
−
max
Enable Pin Voltage = 1.3 V
min
Error Flag (Fixed Output)
V
eflt
% of V
out
1.2 V Output
3.3 V Output
88
90
92
94
97
97
Error Flag Output Low Voltage Saturation (I = 1.0 mA)
V
−
−
−
200
1.0
50
−
−
−
mV
mA
ms
ef
efdo
Error Flag Leakage
I
efleak
Error Flag Blanking Time (Note 2)
T
ef
1. Fixed output voltages available at 0.9 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.0 V, 3.3 V per request.
2. Can be disabled per customer request.
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4
NCP5661
V
in
IN
ON
Enable
Block
EN
OFF
Voltage
Reference
Block
V
ref
= 0.9 V
C
in
R3
R4
V
out
Output
Stage
C *
C
R1
R2
ADJ
C
out
GND
GND
V
V
out
R1 + R2 ǒ * 1Ǔ
ref
*C = 5.0 to 200 pF
C
Figure 1. Typical Schematic, Adjustable Output Version
V
in
IN
ON
EN
OFF
Enable
Block
Voltage
Reference
Block
Rflag = 100 kW
V
ref
= 0.9 V
C
in
V
R3
R4
out
Output
Stage
Cc
R1
R2
C
out
EF
Error
Flag
GND
GND
Figure 2. Typical Schematic, Fixed Output Version
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5
NCP5661
1.00
0.95
0.90
0.85
0.80
0.75
0.70
1.2
1.0
0.8
0.6
0.4
0.2
0
V
C
C
= 2.5 V Adjustable
= 150 mF
out
in
= 10 to 150 mF
out
T = 25°C
J
0.0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
−40 −20
0
20
40
60
80 100 120 140
I
, OUTPUT CURRENT (A)
out
T , JUNCTION TEMPERATURE (°C)
J
Figure 3. Dropout Voltage vs. Temperature
Figure 4. Dropout Voltage vs. Output Current
2.0
1.8
3.5
3.0
2.5
2.0
1.5
1.0
1.6
1.4
1.2
1.0
0.5
0
−40 −20
0
20
40
60
80 100 120 140
−40 −20
0
20
40
60
80 100 120 140
T , JUNCTION TEMPERATURE (°C)
J
T , JUNCTION TEMPERATURE (°C)
J
Figure 5. Ground Current vs. Temperature
Figure 6. Short Circuit Current Limit vs.
Temperature
0.95
0.90
0.85
0.80
0.900
0.898
0.896
0.894
V
I
C
= 3.3 V
= 1.0 A maximum
= 150 mF
in
I
C
C
= 10 mA
= 150 mF
out
out
in
in
0.892
0.890
0.75
0.70
C
= 1.0 to 150 mF
= 1.0 to 150 mF
out
out
T = 25°C
J
T = 25°C
J
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
0.0
0.2
0.4
0.6
0.8
1.0
I
, OUTPUT CURRENT (A)
out
V , INPUT VOLTAGE (V)
in
Figure 7. Output Voltage vs. Input Voltage
Figure 8. Output Voltage vs. Output Load Current
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6
NCP5661
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.0
90
80
70
60
50
40
30
20
10
T = 25°C
A
L = 25 mm Copper
I
= 10 mA
out
V
= 4.0 V
= 0.9 V
= 0 mF
in
V
out
I
= 1.0 A
out
C
C
in
= 1.0 mF
out
T = 25°C
J
0
0
2
4
6
8
10
12
14
16
20
0
1
10
F, FREQUENCY (kHz)
100
1000
INPUT−OUTPUT VOLTAGE DIFFERENTIAL (V)
Figure 9. Output Current vs. Input−Output
Voltage Differential
Figure 10. Ripple Rejection vs. Frequency
100
90
100
90
80
70
60
80
70
60
50
40
50
40
V
= 3.3 V
= 0.9 V
= 10 mA
= 150 mF
in
V = 3.3 V
in
V
out
V
= 0.9 V
= 1.0 A
I
out
out
I
30
20
10
30
20
10
out
C
C
in
C = 150 mF
in
C = 150 mF
out
= 150 mF
out
T = 25°C
J
T = 25°C
J
0
0
Start: 100 Hz
Stop: 100 kHz
Start: 100 Hz
Stop: 100 kHz
F, FREQUENCY (kHz)
F, FREQUENCY (kHz)
Figure 11. Noise Density vs. Frequency
Figure 12. Noise Density vs. Frequency
1000
100
1000
100
150 mF
Unstable
Unstable
10 mF
10
1.0
10
1.0
100 mF
100 mF
10 mF
Stable
150 mF
0.10
0.01
0.10
0.01
Stable
0
100 200 300 400 500 600 700 800 900 1000
OUTPUT CURRENT (mA)
0
100 200 300 400 500 600 700 800 900 1000
OUTPUT CURRENT (mA)
Figure 13. 1.2 Volt Output Stability with Output
Capacitor ESR
Figure 14. 3.3 Volt Output Stability with Output
Capacitor ESR
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NCP5661
V
in
= 4.0 V
V
out
= 0.9 V
C
C
= 150 mF
in
= 150 mF
out
T = 25°C
J
V
in
= 4.0 V
V
out
= 0.9 V
C
C
= 150 mF
in
= 150 mF
out
I
= 10 mA to 1.0 A
out
T = 25°C
J
I
= 1.0 A to 10 mA
out
TIME (1.0 ms/Div)
TIME (1.0 ms/Div)
Figure 15. Load Transient Response
Figure 16. Load Transient Response
APPLICATION INFORMATION
Adjustable Output Operation
The NCP5661 is a high performance low dropout 1.0 A
linear regulator suitable for high power applications,
featuring an ultra−fast response time and low noise without
a bypass capacitor. It is offered in both fixed and adjustable
output versions with voltages as low as 0.9 V. Additional
features, such as Enable and Error Flag (fixed output
version) increase the utility of the NCP5661. It is thermally
robust and includes the safety features necessary during a
fault condition, which provide for an attractive high current
LDO solution for server, ASIC power supplies, networking
equipment applications, and many others.
The application circuit for the adjustable output version is
shown in Figure 1. The reference voltage is 0.9 V and the
adjustable pin current is typically 40 nA. A resistor divider
network, R1 and R2, is calculated using the following
formula:
V
out
ref
R1 + R2 ǒ * 1Ǔ
V
Current Limit Operation
As the peak output current increases beyond its limitation,
the device is internally clampled to 1.5 A, thus causing the
output voltage to decrease and go out of regulation. This
allows the device never to exceed the maximum power
dissipation.
Input Capacitor
The recommended input capacitor value is a 150 mF
OSCON with an Equivalent Series Resistance (ESR) of
50 mW. It is especially required if the power source is
located more than a few inches from the NCP5661. This
capacitor will reduce device sensitivity and enhance the
output transient response time. The PCB layout is very
important and in order to obtain the optimal solution, the Vin
and GND traces should be sufficiently wide to minimize
noise and unstable operation.
Error Flag Operation
The Error Flag pin on the NCP5661 will produce a logic
Low when it drops below the nominal output voltage. Refer
to the electrical characteristics for the threshold values at
which point the Error Flag goes Low. When the NCP5661
is above the nominal output voltage, the Error Flag will
remain at logic High.
The external pullup resistor needs to be connected
Output Capacitor
between V (Pin 1) and the Error Flag pin (Pin 5). A resistor
in
Proper output capacitor selection is required to maintain
stability. The NCP5661 is guaranteed to be stable at an
of approximately 100 kW is recommended to minimize the
current consumption. No pullup resistor is required if the
Error Flag output is not being used.
output capacitance of, C > 10 mF with an ESR < 300 mW
out
over the output current range of 10 mA to 1.0 A. For PCB
layout considerations, place the recommended ceramic
capacitor close to the output pin and keep the leads short.
This should help ensure ultra−fast transient response times.
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8
NCP5661
NCP5661 Evaluation Board
Figure 17. Test Board used for Evaluation
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9
NCP5661
ORDERING INFORMATION
Device
Nominal Output Voltage
Package
Shipping†
NCP5661DTADJRKG
Adj
(Pb−Free)
2500 Tape & Reel
NCP5661DT12RKG (Note 3)
NCP5661DT33RKG (Note 3)
Fixed, 1.2 V
(Pb−Free)
2500 Tape & Reel
2500 Tape & Reel
DPAK
Fixed, 3.3 V
(Pb−Free)
3. Fixed output voltages available at 0.9 V, 1.5 V, 1.8 V, 2.5 V, 3.0 V per request.
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
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10
NCP5661
PACKAGE DIMENSIONS
DPAK−5
CENTER LEAD CROP
CASE 175AA−01
ISSUE A
NOTES:
1. DIMENSIONING AND TOLERANCING
PER ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
SEATING
PLANE
−T−
C
B
R
INCHES
DIM MIN MAX
MILLIMETERS
MIN
5.97
6.35
2.19
0.51
0.46
0.61
MAX
6.22
6.73
2.38
0.71
0.58
0.81
E
V
A
B
C
D
E
F
G
H
J
0.235 0.245
0.250 0.265
0.086 0.094
0.020 0.028
0.018 0.023
0.024 0.032
0.180 BSC
0.034 0.040
0.018 0.023
0.102 0.114
0.045 BSC
R1
Z
A
K
S
4.56 BSC
1 2 3 4
5
0.87
0.46
2.60
1.01
0.58
2.89
U
K
L
1.14 BSC
R
0.170 0.190
4.32
4.70
0.63
0.51
0.89
3.93
4.83
5.33
1.01
−−−
1.27
4.32
F
J
R1 0.185 0.210
S
U
V
Z
0.025 0.040
0.020 −−−
0.035 0.050
0.155 0.170
L
H
D 5 PL
M
G
0.13 (0.005)
T
SOLDERING FOOTPRINT*
6.4
0.252
2.2
0.086
0.34
0.013
5.8
0.228
5.36
0.217
10.6
0.417
0.8
0.031
mm
inches
ǒ
Ǔ
SCALE 4:1
*For additional information on our Pb−Free strategy
and soldering details, please download the
ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
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11
NCP5661
The product described herein (NCP5661), may be covered by one or more of the following U.S. patents: 5,920,184; 5,834,926. There
may be other patents pending.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
N. American Technical Support: 800−282−9855 Toll Free
USA/Canada
ON Semiconductor Website: http://onsemi.com
Order Literature: http://www.onsemi.com/litorder
Literature Distribution Center for ON Semiconductor
P.O. Box 61312, Phoenix, Arizona 85082−1312 USA
Phone: 480−829−7710 or 800−344−3860 Toll Free USA/Canada
Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada
Email: orderlit@onsemi.com
Japan: ON Semiconductor, Japan Customer Focus Center
2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051
Phone: 81−3−5773−3850
For additional information, please contact your
local Sales Representative.
NCP5661/D
相关型号：
NCP5661MNADJT2G
Low Output Voltage, Ultra−Fast 1.0 A Low Dropout Linear Regulator with Enable
ONSEMI
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