NCV8506/D [ETC]
Micropower 400mA LDO Linear Regulators with DELAY and /RESET ; 微400毫安LDO线性稳压器，延迟和/ RESET\n
| 型号： | NCV8506/D |
| 厂家： | 
ETC |
| 描述： | Micropower 400mA LDO Linear Regulators with DELAY and /RESET
|
| 文件： | 总12页 (文件大小：76K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NCV8506 Series
Micropower 400 mA LDO
Linear Regulators with
DELAY and RESET
The NCV8506 is a family of precision micropower voltage
regulators. Their output current capability is 400 mA. The family has
output voltage options for Adjustable, 2.5 V, 3.3 V and 5.0 V.
The output voltage is accurate within ± 2.0% with a maximum
dropout voltage of 0.6 V at 400 mA. Low quiescent current is a feature
drawing only 100 µA with a 100 µA load. This part is ideal for any and
all battery operated microprocessor equipment.
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MARKING
DIAGRAM
Microprocessor control logic includes an active RESET (with
DELAY).
The active RESET circuit operates correctly at an output voltage as
low as 1.0 V. The RESET function is activated during the power up
sequence or during normal operation if the output voltage drops below
the regulation limits.
NCV8506x
AWLYYWW
2
D PAK−7
DPS SUFFIX
CASE 936AB
1
The regulator is protected against reverse battery, short circuit, and
thermal overload conditions. The device can withstand load dump
transients making it suitable for use in automotive environments. The
device has also been optimized for EMC conditions.
x
= Voltage Ratings as Indicated Below:
A = Adjustable
2 = 2.5 V
3 = 3.3 V
5 = 5.0 V
Features
A
= Assembly Location
• Output Voltage Options: Adjustable, 2.5 V, 3.3 V, 5.0 V
• ± 2.0% Output
WL = Wafer Lot
YY = Year
• Low 100 µA Quiescent Current
• Fixed or Adjustable Output Voltage
• Active RESET
WW = Work Week
ORDERING INFORMATION
• 400 mA Output Current Capability
• Fault Protection
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
♦ +60 V Peak Transient Voltage
♦ −15 V Reverse Voltage
♦ Short Circuit
♦ Thermal Overload
• NCV Prefix for Automotive and Other Applications Requiring Site
and Change Control
PIN CONNECTIONS
ADJUSTABLE OUTPUT
FIXED OUTPUT
2
2
D PAK−7
D PAK−7
Tab = GND
Lead 1. DELAY
2. NC
Tab = GND
Lead 1. DELAY
2. NC
3. RESET
4. GND
3. RESET
4. GND
5. V
6. V
7. V
5. SENSE
ADJ
OUT
IN
6. V
7. V
OUT
IN
1
1
Semiconductor Components Industries, LLC, 2004
1
Publication Order Number:
NCV8506/D
January, 2004 − Rev. 3
NCV8506 Series
SENSE
(Fixed Output Only)
I
Q
V
BAT
V
IN
V
OUT
V
DD
33 µF
10 µF
NCV8506
R
RST
5.1 k
V
ADJ
DELAY
(Adjustable
Output Only)
C
DELAY
RESET
GND
I/O
Figure 1. Application Diagram
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2
NCV8506 Series
MAXIMUM RATINGS*{
Rating
Value
−15 to 45
60
Unit
V
V
IN
(DC)
Peak Transient Voltage (46 V Load Dump @ V = 14 V)
V
IN
Operating Voltage
45
V
V
OUT
(DC)
16
V
Voltage Range (RESET, DELAY)
Input Voltage Range
−0.3 to 10
V
V
ADJ
−0.3 to 16
V
ESD Susceptibility
(Human Body Model)
(Machine Model)
4.0
200
kV
V
Junction Temperature, T
−40 to +150
−55 to 150
°C
°C
J
Storage Temperature, T
S
2
Package Thermal Resistance, 7 Lead D PAK
Junction−to−Case, R
2.0
10−50**
°C/W
°C/W
θ
JC
Junction−to−Ambient, R
θ
JA
Lead Temperature Soldering:
Reflow: (SMD styles only) (Note 1) 240 peak (Note 2)
°C
1. 60 second maximum above 183°C.
2. −5°C/+0°C allowable conditions.
*The maximum package power dissipation must be observed.
**Depending on thermal properties of substrate, R
= R
+ R
.
CA
q
q
q
JA
JC
†During the voltage range which exceeds the maximum tested voltage of V , operation is assured, but not specified. Wider limits may apply.
IN
Thermal dissipation must be observed closely.
ELECTRICAL CHARACTERISTICS (I
= 1.0 mA, −40°C ≤ T ≤ 150°C; V = dependent on voltage option (Note 3);
OUT
J
IN
unless otherwise specified.)
Characteristic
Output Stage
Test Conditions
Min
Typ
Max
Unit
Output Voltage for 2.5 V Option (V )
6.5 V < V < 16 V, 1.0 mA ≤ I
≤ 400 mA
≤ 400 mA
2.450
2.425
2.5
2.5
2.550
2.575
V
V
O
IN
OUT
OUT
4.5 V < V < 26 V, 1.0 mA ≤ I
IN
Output Voltage for 3.3 V Option (V )
7.3 V < V < 16 V, 1.0 mA ≤ I
≤ 400 mA
≤ 400 mA
3.234
3.201
3.3
3.3
3.366
3.399
V
V
O
IN
OUT
OUT
4.5 V < V < 26 V, 1.0 mA ≤ I
IN
Output Voltage for 5.0 V Option (V )
9.0 V < V < 16 V, 1.0 mA ≤ I
≤ 400 mA
≤ 400 mA
4.90
4.85
5.0
5.0
5.10
5.15
V
V
O
IN
OUT
OUT
6.0 V < V < 26 V, 1.0 mA ≤ I
IN
Output Voltage for Adjustable Option
V
OUT
= V
(Unity Gain)
ADJ
(V )
O
6.5 V < V < 16 V, 1.0 mA < I
< 400 mA
< 400 mA
1.274
1.261
1.300
1.306
1.326
1.339
V
V
IN
OUT
OUT
4.5 V < V < 26 V, 1.0 mA < I
IN
Dropout Voltage (V − V
(5.0 V and Adj. > 5.0 V Options Only)
)
I
I
= 400 mA
= 1.0 mA
−
−
400
30
600
150
mV
mV
IN
OUT
OUT
OUT
Load Regulation
V
= 14 V, 5.0 mA ≤ I
≤ 400 mA
−30
−
5.0
5.0
30
25
mV
mV
IN
OUT
Line Regulation (2.5 V, 3.3 V, and
Adjustable Options)
4.5 V < V < 26 V, I
= 1.0 mA
= 1.0 mA
IN
OUT
Line Regulation (5.0 V Option)
6.0 V < V < 26 V, I
−
5.0
25
mV
IN
OUT
Quiescent Current, (I ) Active Mode
I
= 100 µA, V = 12 V, Delay = 3.0 V
= 75 mA, V = 14 V, Delay = 3.0 V
IN
−
−
−
100
2.5
25
150
5.0
45
µA
mA
mA
Q
OUT
IN
I
OUT
I
≤ 400 mA, V = 14 V, Delay = 3.0 V
OUT
IN
Current Limit
−
425
100
150
800
500
180
−
−
−
mA
mA
°C
Short Circuit Output Current
Thermal Shutdown
V
OUT
= 0 V
(Guaranteed by Design)
3. Voltage range specified in the Output Stage of the Electrical Characteristics in boldface type.
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3
NCV8506 Series
ELECTRICAL CHARACTERISTICS (continued) (I
= 1.0 mA, −40°C ≤ T ≤ 150°C; V = dependent on voltage option (Note 4);
OUT
J
IN
unless otherwise specified.)
Characteristic
Test Conditions
Min
Typ
Max
Unit
Reset Function (RESET)
RESET Threshold for 2.5 V Option
HIGH (V
V
V
V
= 4.5 V (Note 5) (Note 6)
IN
)
Increasing
Decreasing
2.35
2.30
25
−
−
−
1.0 × V
V
V
mV
RH
OUT
OUT
O
O
O
O
LOW (V
)
−
−
RL
Hysteresis
RESET Threshold for 3.3 V Option
V
V
V
= 4.5 V (Note 5) (Note 6)
Increasing
Decreasing
IN
HIGH (V
)
3.10
3.00
35
−
−
−
1.0 × V
V
V
mV
RH
OUT
OUT
LOW (V
)
−
−
RL
Hysteresis
RESET Threshold for 5.0 V Option
V
V
V
= 6.0 V (Note 6)
Increasing
Decreasing
IN
HIGH (V
)
4.70
4.60
50
−
−
−
1.0 × V
V
V
mV
RH
OUT
OUT
LOW (V
)
−
−
RL
Hysteresis
RESET Threshold for Adjustable Option
V
V
V
= 4.5 V (Note 5) (Note 6)
Increasing
Decreasing
IN
HIGH (V
)
1.22
1.19
10
−
−
−
1.0 × V
V
V
mV
RH
OUT
OUT
LOW (V
)
−
−
RL
Hysteresis
Output Voltage
V
= Minimum (Note 6) (Note 7)
−
0.1
1.8
1.3
−
0.4
2.2
1.6
0.2
5.5
−
V
V
IN
Low (V
)
1.0 V ≤ V
≤ V , R
= 5.1 k
RLO
OUT
RL
RESET
DELAY Switching Threshold (V
(2.5 V, 3.3 V, and 5.0 V Options)
)
V
IN
V
IN
= Minimum (Note 6) (Note 7)
= Minimum (Note 6) (Note 7)
= Minimum (Note 6) (Note 7)
1.4
1.0
−
DT
DELAY Switching Threshold (V
(Adjustable Option)
)
DT
V
DELAY Low Voltage
V
V
V
IN
< RESET Threshold Low(min)
OUT
DELAY Charge Current
DELAY Discharge Current
V
IN
= Minimum (Note 6) (Note 7)
2.5
5.0
4.0
−
µA
mA
DELAY = 1.0 V, V
> V
OUT
RH
V
IN
= Minimum (Note 6) (Note 7)
DELAY = 1.0 V, V
< V
OUT
RL
Voltage Adjust (Adjustable Output only)
Input Current
V
ADJ
= 1.25 V
−0.5
−
0.5
µA
4. Voltage range specified in the Output Stage of the Electrical Characteristics in boldface type.
5. For V ≤ 4.5 V, a RESET = Low may occur with the output in regulation.
IN
6. Part is guaranteed by design to meet specification over the entire V voltage range, but is production tested only at the specified V
IN
IN
voltage.
7. Minimum V = 4.5 V for 2.5 V, 3.3 V, and Adjustable options. Minimum V = 6.0 V for 5.0 V option.
IN
IN
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4
NCV8506 Series
PACKAGE PIN DESCRIPTION, ADJUSTABLE OUTPUT
Pin Number
Pin Symbol
DELAY
NC
Function
1
2
3
4
5
6
7
Timing capacitor for RESET function.
No connection.
RESET
GND
Active reset (accurate to V
≥ 1.0 V)
OUT
Ground. All GND leads must be connected to Ground
.
V
ADJ
Voltage Adjust. A resistor divider from V
to this lead sets the output voltage.
OUT
V
OUT
±2.0%, 400 mA output.
V
IN
Input Voltage.
PACKAGE PIN DESCRIPTION, FIXED OUTPUT
Pin Number
Pin Symbol
DELAY
NC
Function
1
2
3
4
5
Timing capacitor for RESET function.
No connection.
RESET
GND
Active reset (accurate to V
≥ 1.0 V)
OUT
Ground. All GND leads must be connected to Ground
.
Kelvin connection which allows remote sensing of output voltage for improved regulation. If
SENSE
remote sensing is not desired, connect to V
OUT.
6
7
V
OUT
±2.0%, 400 mA output.
V
IN
Input Voltage.
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5
NCV8506 Series
V
OUT
V
IN
Current Source
(Circuit Bias)
SENSE
I
BIAS
Current Limit
Sense
I
BIAS
+
−
Error Amplifier
1.8 V (Fixed Versions)
1.3 V (Adjustable Version)
V
BG
−
Fixed Versions only
V
BG
−18 mV
RESET
DELAY
+
−
Thermal
Protection
V
ADJ
Bandgap
Reference
15 k
Adjustable
Version only
4.0 µA
I
V
BG
BIAS
GND
Figure 2. Block Diagram
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6
NCV8506 Series
TYPICAL PERFORMANCE CHARACTERISTICS
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
3.35
V
V
= 5.0 V
= 14 V
= 5.0 mA
V
= 3.3 V
OUT
= 14 V
OUT
V
IN
IN
3.33
3.31
3.29
3.27
3.25
3.23
I
I
= 5.0 mA
OUT
OUT
−40 −20
0
20 40
60 80 100 120 140 160
−40 −20
0
20 40
60 80 100 120 140 160
TEMPERATURE (°C)
TEMPERATURE (°C)
Figure 3. 5 V Output Voltage vs Temperature
Figure 4. 3.3 V Output Voltage vs Temperature
2.55
2.54
2.53
2.52
2.51
2.50
2.49
2.48
2.47
2.46
2.45
700
V
V
= 2.5 V
= 14 V
= 5.0 mA
OUT
600
500
400
300
200
100
0
IN
I
OUT
125 °C
25 °C
−40 °C
5 V and Adj. > 5 V options only
−40 −20
0
20 40
60 80 100 120 140 160
0
50
100 150
200
250
300
350
400
TEMPERATURE (°C)
I
, OUTPUT CURRENT (mA)
out
Figure 5. 2.5 V Output Voltage vs Temperature
Figure 6. Dropout Voltage vs Output Current
100
100
10
5.0 V
C
= 33 mF*
VOUT
Unstable Region
Unstable Region
3.3 V
2.5 V
10
1.0
C
= 0.1 mF
VOUT
Stable Region
1.0
Stable Region
Unstable Region
0.1
V
C
= 14 V
IN
*There is no unstable lower
= 10 mF
VOUT
5 V version
300 350 400
, OUTPUT CURRENT (mA)
region for the 33 mF capacitor
0.01
0.1
0
50
100 150 200
250
300 350 400
0
50
100 150 200
250
I
, OUTPUT CURRENT (mA)
I
out
out
Figure 7. Output Stability with Output Voltage Change Figure 8. Output Stability with Output Capacitor Change
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7
NCV8506 Series
TYPICAL PERFORMANCE CHARACTERISTICS
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
60
+125°C
+25°C
+125°C
50
−40°C
+25°C
40
−40°C
30
20
10
0
100
0
5
10 15 20
25 30 35
40
45 50
0
50
150 200 250 300 350 400 450 500
I , OUTPUT CURRENT (mA)
OUT
I
, OUTPUT CURRENT (mA)
OUT
Figure 9. Quiescent Current vs Output Current
Figure 10. Quiescent Current vs Output Current
12
140
T = 25°C
T = 25°C
I
= 200 mA
out
120
100
80
60
40
20
0
10
8
I
= 100 mA
out
6
I
= 100 mA
out
4
I
I
= 50 mA
= 10 mA
out
2
out
0
10
6
8
12 14
16 18 20
22
24 26
10
6
8
12 14
16 18 20 22
24 26
V
IN
, INPUT VOLTAGE (V)
V
IN
, INPUT VOLTAGE (V)
Figure 11. Quiescent Current vs Input Voltage
Figure 12. Quiescent Current vs Input Voltage
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8
NCV8506 Series
CIRCUIT DESCRIPTION
REGULATOR CONTROL FUNCTIONS
The NCV8506 contains the microprocessor compatible
control function RESET (Figure 13).
The DELAY lead provides source current (typically 4.0 µA)
to the external DELAY capacitor during the following
proceedings:
1. During Power Up (once the regulation threshold
has been verified).
2. After a reset event has occurred and the device is
back in regulation. The DELAY capacitor is
discharged when the regulation (RESET threshold)
has been violated. This is a latched incident. The
capacitor will fully discharge and wait for the
device to regulate before going through the delay
time event again.
V
IN
RESET
V
OUT
Threshold
DELAY
DELAY
Threshold
(V
)
DT
RESET
Voltage Adjust
T
T
d
d
Figure 14 shows the device setup for a user configurable
Figure 13. Reset and Delay Circuit Wave Forms
output voltage. The feedback to the V
pin is taken from
ADJ
a voltage divider referenced to the output voltage. The loop
is balanced around the Unity Gain threshold (1.30 V
typical).
RESET Function
A RESET signal (low voltage) is generated as the IC
powers up until V is within 1.5% of the regulated output
OUT
voltage, or when V
than 4.0% below the regulated output voltage. Hysteresis is
included in the function to minimize oscillations.
The RESET output is an open collector NPN transistor,
controlled by a low voltage detection circuit. The circuit is
functionally independent of the rest of the IC thereby
guaranteeing that the RESET signal is valid for V
as 1.0 V.
drops out of regulation,and is lower
OUT
≈5.0 V
V
OUT
C
OUT
15 k
NCV8506
V
1.28 V
ADJ
5.1 k
as low
OUT
DELAY Function
The reset delay circuit provides a programmable (by
external capacitor) delay on the RESET output lead.
Figure 14. Adjustable Output
Voltage
APPLICATION NOTES
SETTING THE DELAY TIME
STABILITY CONSIDERATIONS
The delay time is controlled by the Reset Delay Low
Voltage, Delay Switching Threshold, and the Delay Charge
Current. The delay follows the equation:
The output or compensation capacitor helps determine
three main characteristics of a linear regulator: start−up
delay, load transient response and loop stability.
The capacitor value and type should be based on cost,
availability, size and temperature constraints. A tantalum or
aluminum electrolytic capacitor is best, since a film or
ceramic capacitor with almost zero ESR can cause
instability. The aluminum electrolytic capacitor is the least
expensive solution, but, if the circuit operates at low
temperatures (−25°C to −40°C), both the value and ESR of
the capacitor will vary considerably. The capacitor
manufacturers data sheet usually provides this information.
[
C
+
]
(V * Reset Delay Low Voltage)
DELAY dt
t
DELAY
Delay Charge Current
Example:
Using C
= 33 nF.
DELAY
Assume reset Delay Low Voltage = 0.
Use the typical value for V = 1.8 V (2.5 V, 3.3 V, and
5.0 V options).
Use the typical value for Delay Charge Current = 4.2 µA.
dt
[
]
33 nF(1.8 * 0)
t
+
+ 14 ms
DELAY
4.2 mA
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9
NCV8506 Series
The value for the output capacitor C
shown in Figure 15
The value of R
can then be compared with those in the
OUT
qJA
should work for most applications, however it is not
necessarily the optimized solution.
package section of the data sheet. Those packages with
’s less than the calculated value in equation 2 will keep
R
qJA
the die temperature below 150°C.
V
In some cases, none of the packages will be sufficient to
dissipate the heat generated by the IC, and an external
heatsink will be required.
IN
V
OUT
C
0.1 µF
*
IN
C
33 µF
**
NCV8506
OUT
R
RST
RESET
I
I
IN
OUT
SMART
REGULATOR
V
IN
V
OUT
Control
Features
}
*C required if regulator is located far from the power supply
IN
filter.
I
Q
**C
required for stability. Capacitor must operate at minimum
OUT
temperature expected.
Figure 16. Single Output Regulator with Key
Performance Parameters Labeled
Figure 15. Test and Application Circuit Showing
Output Compensation
HEAT SINKS
CALCULATING POWER DISSIPATION IN A
SINGLE OUTPUT LINEAR REGULATOR
The maximum power dissipation for a single output
regulator (Figure 16) is:
A heat sink effectively increases the surface area of the
package to improve the flow of heat away from the IC and
into the surrounding air.
Each material in the heat flow path between the IC and the
outside environment will have a thermal resistance. Like
series electrical resistances, these resistances are summed to
P
+ [V
* V
]I
OUT(min) OUT(max)
(1)
D(max)
IN(max)
) V
I
IN(max) Q
determine the value of R
:
qJA
where:
R
+ R
) R
) R
qSA
(3)
qJA
qJC
qCS
V
V
I
is the maximum input voltage,
is the minimum output voltage,
IN(max)
OUT(min)
where:
is the maximum output current for the
R
qJC
= the junction−to−case thermal resistance,
= the case−to−heatsink thermal resistance, and
= the heatsink−to−ambient thermal resistance.
OUT(max)
application, and
R
qCS
R
qSA
I
I
is the quiescent current the regulator consumes at
Q
.
OUT(max)
R
qJC
appears in the package section of the data sheet. Like
, it too is a function of package type. R
functions of the package type, heatsink and the interface
between them. These values appear in heat sink data sheets
of heat sink manufacturers.
Once the value of P
is known, the maximum
D(max)
R
qJA
and R
are
qCS
qSA
permissible value of R
can be calculated:
qJA
T
150°C *
A
R
+
(2)
qJA
P
D
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10
NCV8506 Series
ORDERING INFORMATION
Device
NCV8506D2TADJ
NCV8506D2TADJR4
NCV8506D2T25
Output Voltage
Package
Shipping†
50 Units/Rail
Adjustable
2.5 V
750 Tape & Reel
50 Units/Rail
NCV8506D2T25R4
NCV8506D2T33
750 Tape & Reel
50 Units/Rail
2
D PAK−7
3.3 V
NCV8506D2T33R4
NCV8506D2T50
750 Tape & Reel
50 Units/Rail
5.0 V
NCV8506D2T50R4
750 Tape & Reel
†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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11
NCV8506 Series
PACKAGE DIMENSIONS
D2PAK−7
DPS SUFFIX
CASE 936AB−01
ISSUE O
For D2PAK Outline and
Dimensions − Contact Factory
SMART REGULATOR is a registered trademark of Semiconductor Components Industries, LLC (SCILLIC).
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
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