ON NCV8506 Micropower 400 ma ldo linear regulators with delay and reset Datasheet

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.
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.
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.
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MARKING
DIAGRAM
NCV8506x
AWLYYWW
D2PAK−7
DPS SUFFIX
CASE 936AB
x
= Voltage Ratings as Indicated Below:
A = Adjustable
2 = 2.5 V
3 = 3.3 V
5 = 5.0 V
A
= Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
Features
•
•
•
•
•
•
•
•
1
Output Voltage Options: Adjustable, 2.5 V, 3.3 V, 5.0 V
± 2.0% Output
Low 100 µA Quiescent Current
Fixed or Adjustable Output Voltage
Active RESET
400 mA Output Current Capability
Fault Protection
♦ +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
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
PIN CONNECTIONS
ADJUSTABLE OUTPUT
FIXED OUTPUT
D2PAK−7
1
 Semiconductor Components Industries, LLC, 2004
January, 2004 − Rev. 3
D2PAK−7
Tab = GND
Lead 1. DELAY
2. NC
3. RESET
4. GND
5. VADJ
6. VOUT
7. VIN
1
1
Tab = GND
Lead 1. DELAY
2. NC
3. RESET
4. GND
5. SENSE
6. VOUT
7. VIN
Publication Order Number:
NCV8506/D
NCV8506 Series
IQ
VIN
VOUT
VDD
33 µF
10 µF
NCV8506
DELAY
CDELAY
Microprocessor
VBAT
SENSE
(Fixed Output Only)
RRST
5.1 k
VADJ
(Adjustable
Output Only)
RESET
I/O
GND
Figure 1. Application Diagram
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2
NCV8506 Series
MAXIMUM RATINGS*
Rating
Value
Unit
−15 to 45
V
Peak Transient Voltage (46 V Load Dump @ VIN = 14 V)
60
V
Operating Voltage
45
V
VOUT (DC)
16
V
Voltage Range (RESET, DELAY)
−0.3 to 10
V
Input Voltage Range
VADJ
−0.3 to 16
V
4.0
200
kV
V
−40 to +150
°C
−55 to 150
°C
2.0
10−50**
°C/W
°C/W
240 peak (Note 2)
°C
VIN (DC)
ESD Susceptibility
(Human Body Model)
(Machine Model)
Junction Temperature, TJ
Storage Temperature, TS
Package Thermal Resistance, 7 Lead
Junction−to−Case, RθJC
Junction−to−Ambient, RθJA
D2PAK
Lead Temperature Soldering:
Reflow: (SMD styles only) (Note 1)
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, RJA = RJC + RCA.
†During the voltage range which exceeds the maximum tested voltage of VIN, operation is assured, but not specified. Wider limits may apply.
Thermal dissipation must be observed closely.
ELECTRICAL CHARACTERISTICS (IOUT = 1.0 mA, −40°C ≤ TJ ≤ 150°C; VIN = dependent on voltage option (Note 3);
unless otherwise specified.)
Test Conditions
Characteristic
Min
Typ
Max
Unit
Output Stage
Output Voltage for 2.5 V Option (VO)
6.5 V < VIN < 16 V, 1.0 mA ≤ IOUT ≤ 400 mA
4.5 V < VIN < 26 V, 1.0 mA ≤ IOUT ≤ 400 mA
2.450
2.425
2.5
2.5
2.550
2.575
V
V
Output Voltage for 3.3 V Option (VO)
7.3 V < VIN < 16 V, 1.0 mA ≤ IOUT ≤ 400 mA
4.5 V < VIN < 26 V, 1.0 mA ≤ IOUT ≤ 400 mA
3.234
3.201
3.3
3.3
3.366
3.399
V
V
Output Voltage for 5.0 V Option (VO)
9.0 V < VIN < 16 V, 1.0 mA ≤ IOUT ≤ 400 mA
6.0 V < VIN < 26 V, 1.0 mA ≤ IOUT ≤ 400 mA
4.90
4.85
5.0
5.0
5.10
5.15
V
V
Output Voltage for Adjustable Option
(VO)
VOUT = VADJ (Unity Gain)
6.5 V < VIN < 16 V, 1.0 mA < IOUT < 400 mA
4.5 V < VIN < 26 V, 1.0 mA < IOUT < 400 mA
1.274
1.261
1.300
1.306
1.326
1.339
V
V
Dropout Voltage (VIN − VOUT)
(5.0 V and Adj. > 5.0 V Options Only)
IOUT = 400 mA
IOUT = 1.0 mA
−
−
400
30
600
150
mV
mV
Load Regulation
VIN = 14 V, 5.0 mA ≤ IOUT ≤ 400 mA
−30
5.0
30
mV
Line Regulation (2.5 V, 3.3 V, and
Adjustable Options)
4.5 V < VIN < 26 V, IOUT = 1.0 mA
−
5.0
25
mV
Line Regulation (5.0 V Option)
6.0 V < VIN < 26 V, IOUT = 1.0 mA
−
5.0
25
mV
Quiescent Current, (IQ) Active Mode
IOUT = 100 µA, VIN = 12 V, Delay = 3.0 V
IOUT = 75 mA, VIN = 14 V, Delay = 3.0 V
IOUT ≤ 400 mA, VIN = 14 V, Delay = 3.0 V
−
−
−
100
2.5
25
150
5.0
45
µA
mA
mA
425
800
−
mA
Current Limit
−
Short Circuit Output Current
VOUT = 0 V
100
500
−
mA
Thermal Shutdown
(Guaranteed by Design)
150
180
−
°C
3. Voltage range specified in the Output Stage of the Electrical Characteristics in boldface type.
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NCV8506 Series
ELECTRICAL CHARACTERISTICS (continued) (IOUT = 1.0 mA, −40°C ≤ TJ ≤ 150°C; VIN = dependent on voltage option (Note 4);
unless otherwise specified.)
Characteristic
Test Conditions
Min
Typ
Max
Unit
2.35
2.30
25
−
−
−
1.0 × VO
−
−
V
V
mV
3.10
3.00
35
−
−
−
1.0 × VO
−
−
V
V
mV
4.70
4.60
50
−
−
−
1.0 × VO
−
−
V
V
mV
1.22
1.19
10
−
−
−
1.0 × VO
−
−
V
V
mV
−
0.1
0.4
V
Reset Function (RESET)
RESET Threshold for 2.5 V Option
HIGH (VRH)
LOW (VRL)
Hysteresis
VIN = 4.5 V (Note 5) (Note 6)
VOUT Increasing
VOUT Decreasing
RESET Threshold for 3.3 V Option
HIGH (VRH)
LOW (VRL)
Hysteresis
VIN = 4.5 V (Note 5) (Note 6)
VOUT Increasing
VOUT Decreasing
RESET Threshold for 5.0 V Option
HIGH (VRH)
LOW (VRL)
Hysteresis
VIN = 6.0 V (Note 6)
VOUT Increasing
VOUT Decreasing
RESET Threshold for Adjustable Option
HIGH (VRH)
LOW (VRL)
Hysteresis
VIN = 4.5 V (Note 5) (Note 6)
VOUT Increasing
VOUT Decreasing
Output Voltage
Low (VRLO)
VIN = Minimum (Note 6) (Note 7)
1.0 V ≤ VOUT ≤ VRL, RRESET = 5.1 k
DELAY Switching Threshold (VDT)
(2.5 V, 3.3 V, and 5.0 V Options)
VIN = Minimum (Note 6) (Note 7)
1.4
1.8
2.2
V
DELAY Switching Threshold (VDT)
(Adjustable Option)
VIN = Minimum (Note 6) (Note 7)
1.0
1.3
1.6
V
DELAY Low Voltage
VIN = Minimum (Note 6) (Note 7)
VOUT < RESET Threshold Low(min)
−
−
0.2
V
DELAY Charge Current
VIN = Minimum (Note 6) (Note 7)
DELAY = 1.0 V, VOUT > VRH
2.5
4.0
5.5
µA
DELAY Discharge Current
VIN = Minimum (Note 6) (Note 7)
DELAY = 1.0 V, VOUT < VRL
5.0
−
−
mA
VADJ = 1.25 V
−0.5
−
0.5
µA
Voltage Adjust (Adjustable Output only)
Input Current
4. Voltage range specified in the Output Stage of the Electrical Characteristics in boldface type.
5. For VIN ≤ 4.5 V, a RESET = Low may occur with the output in regulation.
6. Part is guaranteed by design to meet specification over the entire VIN voltage range, but is production tested only at the specified VIN
voltage.
7. Minimum VIN = 4.5 V for 2.5 V, 3.3 V, and Adjustable options. Minimum VIN = 6.0 V for 5.0 V option.
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NCV8506 Series
PACKAGE PIN DESCRIPTION, ADJUSTABLE OUTPUT
Pin Number
Pin Symbol
Function
1
DELAY
2
NC
3
RESET
4
GND
Ground. All GND leads must be connected to Ground.
5
VADJ
Voltage Adjust. A resistor divider from VOUT to this lead sets the output voltage.
6
VOUT
±2.0%, 400 mA output.
7
VIN
Timing capacitor for RESET function.
No connection.
Active reset (accurate to VOUT ≥ 1.0 V)
Input Voltage.
PACKAGE PIN DESCRIPTION, FIXED OUTPUT
Pin Number
Pin Symbol
1
DELAY
2
NC
3
RESET
4
GND
5
SENSE
6
VOUT
7
VIN
Function
Timing capacitor for RESET function.
No connection.
Active reset (accurate to VOUT ≥ 1.0 V)
Ground. All GND leads must be connected to Ground.
Kelvin connection which allows remote sensing of output voltage for improved regulation. If
remote sensing is not desired, connect to VOUT.
±2.0%, 400 mA output.
Input Voltage.
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NCV8506 Series
VOUT
VIN
Current Source
(Circuit Bias)
SENSE
IBIAS
Current Limit
Sense
IBIAS
+ −
Error Amplifier
1.8 V (Fixed Versions)
1.3 V (Adjustable Version)
VBG
+
VBG −18 mV Fixed Versions only
−
RESET
+
−
Thermal
Protection
4.0 µA
Bandgap
Reference
IBIAS
VADJ
VBG
DELAY
Figure 2. Block Diagram
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6
15 k
Adjustable
Version only
GND
NCV8506 Series
TYPICAL PERFORMANCE CHARACTERISTICS
5.10
3.35
Vout, OUTPUT VOLTAGE (V)
5.08
5.06
Vout, OUTPUT VOLTAGE (V)
VOUT = 5.0 V
VIN = 14 V
IOUT = 5.0 mA
5.04
5.02
5.00
4.98
4.96
4.94
VOUT = 3.3 V
VIN = 14 V
IOUT = 5.0 mA
3.33
3.31
3.29
3.27
3.25
4.92
4.90
−40 −20
0
3.23
−40 −20
20 40
60 80 100 120 140 160
TEMPERATURE (°C)
Figure 3. 5 V Output Voltage vs Temperature
20 40
60 80 100 120 140 160
TEMPERATURE (°C)
Figure 4. 3.3 V Output Voltage vs Temperature
700
2.55
2.53
DROPOUT VOLTAGE (mV)
VOUT = 2.5 V
VIN = 14 V
IOUT = 5.0 mA
2.54
Vout, OUTPUT VOLTAGE (V)
0
2.52
2.51
2.50
2.49
2.48
2.47
2.46
600
500
125 °C
400
25 °C
300
200
−40 °C
100
5 V and Adj. > 5 V options only
2.45
−40 −20
0
0
20 40
60 80 100 120 140 160
TEMPERATURE (°C)
Figure 5. 2.5 V Output Voltage vs Temperature
100
50
100 150
200
250
300
Iout, OUTPUT CURRENT (mA)
350
400
Figure 6. Dropout Voltage vs Output Current
100
5.0 V
Unstable Region
0
CVOUT = 33 F*
Unstable Region
3.3 V
10
10
ESR ()
ESR ()
2.5 V
1.0
Stable Region
1.0
Stable Region
Unstable Region
0.1
VIN = 14 V
CVOUT = 10 F
0.01
CVOUT = 0.1 F
0
50
100 150 200
250
300
Iout, OUTPUT CURRENT (mA)
350
0.1
400
Figure 7. Output Stability with Output Voltage Change
*There is no unstable lower
region for the 33 F capacitor
0
50
5 V version
300
100 150 200
250
Iout, OUTPUT CURRENT (mA)
350
400
Figure 8. Output Stability with Output Capacitor Change
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NCV8506 Series
TYPICAL PERFORMANCE CHARACTERISTICS
60
+125°C
1.8
IQ, QUIESCENT CURRENT (mA)
IQ, QUIESCENT CURRENT (mA)
2.0
+25°C
1.6
−40°C
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
5
10
40
15 20
25 30 35
IOUT, OUTPUT CURRENT (mA)
45
Figure 9. Quiescent Current vs Output Current
IQ, QUIESCENT CURRENT (A)
IQ, QUIESCENT CURRENT (mA)
6
2
Iout = 50 mA
Iout = 10 mA
0
6
8
10
12 14
16 18 20
VIN, INPUT VOLTAGE (V)
22
24
10
0
50
100 150 200 250 300 350 400 450 500
IOUT, OUTPUT CURRENT (mA)
T = 25°C
8
Iout = 100 mA
20
140
T = 25°C
10
4
−40°C
30
Figure 10. Quiescent Current vs Output Current
12
Iout = 200 mA
+25°C
40
0
50
+125°C
50
120
100
80
60
40
20
0
26
Figure 11. Quiescent Current vs Input Voltage
Iout = 100 A
6
8
10
12 14
16 18 20
VIN, INPUT VOLTAGE (V)
22
24
26
Figure 12. Quiescent Current vs Input Voltage
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NCV8506 Series
CIRCUIT DESCRIPTION
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.
REGULATOR CONTROL FUNCTIONS
The NCV8506 contains the microprocessor compatible
control function RESET (Figure 13).
VIN
RESET
Threshold
VOUT
DELAY
DELAY
Threshold
(VDT)
RESET
Td
Voltage Adjust
Td
Figure 14 shows the device setup for a user configurable
output voltage. The feedback to the VADJ pin is taken from
a voltage divider referenced to the output voltage. The loop
is balanced around the Unity Gain threshold (1.30 V
typical).
Figure 13. Reset and Delay Circuit Wave Forms
RESET Function
A RESET signal (low voltage) is generated as the IC
powers up until VOUT is within 1.5% of the regulated output
voltage, or when VOUT drops out of regulation,and is lower
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 VOUT as low
as 1.0 V.
≈5.0 V
VOUT
NCV8506
VADJ
15 k
COUT
1.28 V
5.1 k
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
The delay time is controlled by the Reset Delay Low
Voltage, Delay Switching Threshold, and the Delay Charge
Current. The delay follows the equation:
tDELAY STABILITY CONSIDERATIONS
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.
[CDELAY(Vdt Reset Delay Low Voltage)]
Delay Charge Current
Example:
Using CDELAY = 33 nF.
Assume reset Delay Low Voltage = 0.
Use the typical value for Vdt = 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.
tDELAY [33 nF(1.8 0)]
14 ms
4.2 A
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9
NCV8506 Series
The value for the output capacitor COUT shown in Figure 15
should work for most applications, however it is not
necessarily the optimized solution.
VIN
The value of RJA can then be compared with those in the
package section of the data sheet. Those packages with
RJA’s less than the calculated value in equation 2 will keep
the die temperature below 150°C.
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.
VOUT
CIN*
0.1 µF
NCV8506
RRST
COUT**
33 µF
RESET
VIN
VOUT
IQ
Figure 16. Single Output Regulator with Key
Performance Parameters Labeled
Figure 15. Test and Application Circuit Showing
Output Compensation
HEAT SINKS
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
determine the value of RJA:
CALCULATING POWER DISSIPATION IN A
SINGLE OUTPUT LINEAR REGULATOR
The maximum power dissipation for a single output
regulator (Figure 16) is:
(1)
VIN(max)IQ
where:
VIN(max) is the maximum input voltage,
VOUT(min) is the minimum output voltage,
IOUT(max) is the maximum output current for the
application, and
IQ is the quiescent current the regulator consumes at
IOUT(max).
Once the value of PD(max) is known, the maximum
permissible value of RJA can be calculated:
T
RJA 150°C A
PD
SMART
REGULATOR
} Control
Features
*CIN required if regulator is located far from the power supply
filter.
**COUT required for stability. Capacitor must operate at minimum
temperature expected.
PD(max) [VIN(max) VOUT(min)] IOUT(max)
IOUT
IIN
RJA RJC RCS RSA
(3)
where:
RJC = the junction−to−case thermal resistance,
RCS = the case−to−heatsink thermal resistance, and
RSA = the heatsink−to−ambient thermal resistance.
RJC appears in the package section of the data sheet. Like
RJA, it too is a function of package type. RCS and RSA are
functions of the package type, heatsink and the interface
between them. These values appear in heat sink data sheets
of heat sink manufacturers.
(2)
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NCV8506 Series
ORDERING INFORMATION
Device
Output Voltage
Package
NCV8506D2TADJ
NCV8506D2TADJR4
50 Units/Rail
Adjustable
750 Tape & Reel
NCV8506D2T25
NCV8506D2T25R4
50 Units/Rail
25V
2.5
D2PAK−7
PAK 7
NCV8506D2T33
NCV8506D2T33R4
33V
3.3
750 Tape & Reel
50 Units/Rail
750 Tape & Reel
NCV8506D2T50
NCV8506D2T50R4
Shipping†
50 Units/Rail
50V
5.0
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
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,
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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
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For additional information, please contact your
local Sales Representative.
NCV8506/D
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