NCV8504PW33R2 [ONSEMI]

Micropower 400 mA LDO Linear Regulators with DELAY, Adjustable RESET, and General Use Comparator; 微400毫安LDO线性稳压器与延迟,可调复位,一般用比较器
NCV8504PW33R2
型号: NCV8504PW33R2
厂家: ONSEMI    ONSEMI
描述:

Micropower 400 mA LDO Linear Regulators with DELAY, Adjustable RESET, and General Use Comparator
微400毫安LDO线性稳压器与延迟,可调复位,一般用比较器

稳压器 比较器
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中文:  中文翻译
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NCV8504 Series  
Micropower 400 mA LDO  
Linear Regulators with  
DELAY, Adjustable RESET,  
and General Use Comparator  
http://onsemi.com  
MARKING  
The NCV8504 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.  
DIAGRAM  
16  
16  
1
SOIC 16 LEAD  
WIDE BODY  
EXPOSED PAD  
PDW SUFFIX  
CASE 751AG  
NCV8504x  
AWLYYWWG  
1
x
= Voltage Ratings as Indicated Below:  
A = Adjustable  
The reset threshold voltage can be decreased by the connection of  
2 = 2.5 V  
3 = 3.3 V  
5 = 5.0 V  
= Assembly Location  
WL = Wafer Lot  
YY = Year  
external resistor divider to R  
lead.  
ADJ  
The general use comparator (FLAG/Monitor) is referenced to a  
temperature stable voltage and provides 1 mA of drive current at its  
open collector output.  
A
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.  
WW = Work Week  
G
= PbFree Device  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 11 of this data sheet.  
Features  
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  
Adjustable Reset  
400 mA Output Current Capability  
Fault Protection  
+60 V Peak Transient Voltage  
15 V Reverse Voltage  
Short Circuit  
Thermal Overload  
General Use Comparator  
NCV Prefix for Automotive and Other Applications Requiring Site  
and Change Control  
PbFree Packages are Available  
©
Semiconductor Components Industries, LLC, 2007  
1
Publication Order Number:  
February, 2007 Rev. 17  
NCV8504/D  
NCV8504 Series  
PIN CONNECTIONS  
ADJUSTABLE OUTPUT  
FIXED OUTPUT  
1
1
16  
FLAG  
16  
FLAG  
V
ADJ  
SENSE  
V
RESET  
NC  
V
RESET  
NC  
OUT  
NC  
OUT  
NC  
NC  
NC  
NC  
GND  
NC  
NC  
NC  
NC  
NC  
GND  
NC  
NC  
V
DELAY  
V
DELAY  
IN  
IN  
MON  
R
ADJ  
MON  
R
ADJ  
Monitor  
SENSE  
(Fixed Output Only)  
I
Q
(V )  
O
V
V
BAT  
V
IN  
V
OUT  
DD  
33 μF  
10 μF  
R
ADJ  
NCV8504  
R
FLG  
R
RST  
5.1 k  
5.1 k  
DELAY  
MON  
C
DELAY  
V
ADJ  
(Adjustable  
Output Only)  
RESET  
I/O  
FLAG  
I/O  
GND  
Figure 1. Application Diagram  
http://onsemi.com  
2
NCV8504 Series  
MAXIMUM RATINGS*{  
Rating  
Value  
15 to 45  
60  
Unit  
V
V
(DC)  
IN  
Peak Transient Voltage (46 V Load Dump @ V = 14 V)  
V
IN  
Operating Voltage  
45  
V
V
(DC)  
0.3 to 16  
0.3 to 10  
V
OUT  
Voltage Range (RESET, FLAG, R  
, DELAY)  
ADJ  
V
Input Voltage Range  
MON  
0.3 to 10  
0.3 to 16  
V
V
V
ADJ  
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
Package Thermal Resistance, SOW16 E PAD:  
JunctiontoCase, R  
16  
57  
°C/W  
°C/W  
θ
JC  
JunctiontoAmbient, 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.  
†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 )  
O
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
IN  
OUT  
OUT  
4.5 V < V < 26 V, 1.0 mA I  
IN  
Output Voltage for 3.3 V Option  
(V )  
O
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
IN  
OUT  
OUT  
4.5 V < V < 26 V, 1.0 mA I  
IN  
Output Voltage for 5.0 V Option  
(V )  
O
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
IN  
OUT  
OUT  
6.0 V < V < 26 V, 1.0 mA I  
IN  
Output Voltage for Adjustable Option  
V
= V  
(Unity Gain)  
OUT  
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, MON = 3.0 V  
100  
2.5  
25  
150  
5.0  
45  
μA  
mA  
mA  
Q
OUT  
IN  
I
= 75 mA, V = 14 V, Delay = 3.0 V, MON = 3.0 V  
OUT  
IN  
I
400 mA, V = 14 V, Delay = 3.0 V, MON = 3.0 V  
OUT  
IN  
Current Limit  
425  
100  
150  
800  
500  
180  
mA  
mA  
°C  
Short Circuit Output Current  
Thermal Shutdown  
V
= 0 V  
OUT  
(Guaranteed by Design)  
3. Voltage range specified in the Output Stage of the Electrical Characteristics in boldface type.  
http://onsemi.com  
3
NCV8504 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  
)
RH  
Increasing  
Decreasing  
2.35  
2.30  
25  
1.0 × V  
V
V
mV  
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)  
IN  
HIGH (V )  
RH  
Increasing  
Decreasing  
3.10  
3.00  
35  
1.0 × V  
V
V
mV  
OUT  
OUT  
LOW (V )  
RL  
Hysteresis  
RESET Threshold for 5.0 V Option  
V
V
V
= 6.0 V (Note 6)  
IN  
HIGH (V )  
RH  
Increasing  
Decreasing  
4.70  
4.60  
50  
1.0 × V  
V
V
mV  
OUT  
OUT  
LOW (V )  
RL  
Hysteresis  
RESET Threshold for Adjustable Option  
V
V
V
= 4.5 V (Note 5) (Note 6)  
IN  
HIGH (V )  
RH  
Increasing  
Decreasing  
1.22  
1.19  
10  
1.0 × V  
V
V
mV  
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
= Minimum (Note 6) (Note 7)  
= Minimum (Note 6) (Note 7)  
= Minimum (Note 6) (Note 7)  
1.4  
1.0  
DT  
IN  
DELAY Switching Threshold (V  
(Adjustable Option)  
)
DT  
V
V
IN  
DELAY Low Voltage  
V
V
V
IN  
< RESET Threshold Low(min)  
OUT  
DELAY Charge Current  
DELAY Discharge Current  
V
= Minimum (Note 6) (Note 7)  
2.5  
5.0  
4.0  
μA  
mA  
IN  
DELAY = 1.0 V, V  
> V  
OUT  
RH  
V
= Minimum (Note 6) (Note 7)  
IN  
DELAY = 1.0 V, V  
< V  
OUT  
RL  
Reset Adjust Switching Voltage (V  
Hysteresis  
)
V
= Minimum (Note 6) (Note 7)  
IN  
1.16  
20  
1.25  
50  
1.34  
100  
V
mV  
R(ADJ)  
Increasing and Decreasing  
FLAG/Monitor  
Monitor Threshold  
Increasing and Decreasing,  
1.22  
1.29  
1.36  
V
V
= Minimum (Note 6) (Note 7)  
IN  
Hysteresis  
V
= Minimum (Note 6) (Note 7)  
10  
1.0  
35  
0.1  
0.1  
75  
1.0  
0.4  
mV  
μA  
V
IN  
Input Current  
MON = 2.0 V  
MON = 0 V, I  
Output Saturation Voltage  
= 1.0 mA,  
FLAG  
V
= Minimum (Note 6) (Note 7)  
IN  
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  
http://onsemi.com  
4
NCV8504 Series  
PACKAGE PIN DESCRIPTION, ADJUSTABLE OUTPUT  
Pin Number  
Pin Symbol  
Function  
to this lead sets the output voltage.  
OUT  
1
V
ADJ  
Voltage Adjust. A resistor divider from V  
2.0%, 400 mA output.  
No connection.  
2
V
OUT  
36, 11, 12, 14  
NC  
7
8
V
Input Voltage.  
IN  
MON  
Monitor. Input to comparator. If not needed connect to V  
Reset Adjust. If not needed connect to ground.  
Timing capacitor for RESET function.  
OUT.  
9
R
ADJ  
10  
13  
15  
16  
DELAY  
GND  
Ground. All GND leads must be connected to Ground  
.
RESET  
FLAG  
Active reset (accurate to V  
1.0 V)  
OUT  
Open collector output from comparator.  
NOTE: Tentative pinout for SOW16 E Pad.  
PACKAGE PIN DESCRIPTION, FIXED OUTPUT  
Pin Number  
Pin Symbol  
Function  
Kelvin connection which allows remote sensing of output voltage for improved regulation. If  
1
SENSE  
remote sensing is not desired, connect to V  
2.0%, 400 mA output.  
No connection.  
OUT.  
2
V
OUT  
36, 11, 12, 14  
NC  
7
8
V
Input Voltage.  
IN  
MON  
Monitor. Input to comparator. If not needed connect to V  
Reset Adjust. If not needed connect to ground.  
Timing capacitor for RESET function.  
OUT.  
9
R
ADJ  
10  
13  
15  
16  
DELAY  
GND  
Ground. All GND leads must be connected to Ground  
.
RESET  
FLAG  
Active reset (accurate to V  
1.0 V)  
OUT  
Open collector output from comparator.  
NOTE: Tentative pinout for SOW16 E Pad.  
http://onsemi.com  
5
NCV8504 Series  
V
OUT  
V
IN  
Current Source  
(Circuit Bias)  
SENSE  
I
BIAS  
Current Limit  
Sense  
+
+
I
BIAS  
R
ADJ  
+
1.8 V  
Error Amplifier  
(Fixed Versions)  
1.3 V  
(Adjustable Version)  
V
18 mV  
BG  
V
BG  
RESET  
+
Fixed Versions only  
Thermal  
Protection  
4.0 μA  
V
ADJ  
Bandgap  
Reference  
15 k  
Adjustable  
Version only  
DELAY  
MON  
I
V
BIAS  
BG  
GND  
V
I
BG  
BIAS  
FLAG  
+
Figure 2. Block Diagram  
http://onsemi.com  
6
NCV8504 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
V
= 3.3 V  
OUT  
OUT  
= 14 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  
600  
500  
400  
300  
200  
100  
0
V
V
= 2.5 V  
= 14 V  
= 5.0 mA  
OUT  
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  
3.3 V  
Unstable Region  
10  
1.0  
2.5 V  
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  
http://onsemi.com  
7
NCV8504 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  
10  
8
140  
120  
100  
80  
T = 25°C  
T = 25°C  
I
= 200 mA  
out  
I
= 100 mA  
out  
6
60  
I
= 100 mA  
out  
4
40  
I
I
= 50 mA  
= 10 mA  
out  
out  
2
20  
0
0
10  
6
8
12 14  
16 18 20 22  
24 26  
10  
6
8
12 14  
16 18 20  
22  
24 26  
V
, INPUT VOLTAGE (V)  
IN  
V
, INPUT VOLTAGE (V)  
IN  
Figure 11. Quiescent Current vs Input Voltage  
Figure 12. Quiescent Current vs Input Voltage  
http://onsemi.com  
8
NCV8504 Series  
CIRCUIT DESCRIPTION  
REGULATOR CONTROL FUNCTIONS  
The NCV8504 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  
Threshold  
V
OUT  
DELAY  
DELAY  
Threshold  
(V  
)
DT  
RESET  
FLAG/Monitor Comparator  
T
T
d
d
A general use comparator is included whose positive input  
terminal is tied to the onchip bandgap voltage reference.  
This provides a very temperature stable referenced  
comparator with versatile use in any system. The trip point  
can be programmed externally using a resistor divider to the  
input monitor (MON) (Figure 15). The typical threshold is  
1.29 V on the MON pin.  
Figure 13. Reset and Delay Circuit Wave Forms  
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  
drops out of regulation,and is lower  
OUT  
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  
V
MON  
BAT  
V
V
OUT  
V
V
CC  
IN  
guaranteeing that the RESET signal is valid for V  
as 1.0 V.  
as low  
μP  
OUT  
NCV8504  
C
OUT  
I/O  
MON  
FLAG  
Adjustable Reset Function  
The reset threshold can be made lower by connecting an  
external resistor divider to the R lead from the V  
R
RESET  
ADJ  
RESET  
GND  
DELAY  
ADJ  
OUT  
lead, as displayed in Figure 14. This lead is grounded to  
select the default value of 4.6 V (on the 5.0 V option).  
Figure 15. Flag/Monitor Function  
Voltage Adjust  
to μP and  
System  
Power  
Figure 16 shows the device setup for a user configurable  
output voltage. The feedback to the V pin is taken from  
V
R(ADJ)  
V
R
ADJ  
OUT  
ADJ  
a voltage divider referenced to the output voltage. The loop  
is balanced around the Unity Gain threshold (1.30 V  
typical).  
NCV8504  
C
OUT  
R
RST  
RESET  
DELAY  
to μP and  
RESET  
5.0 V  
V
OUT  
Port  
C
OUT  
15 k  
NCV8504  
C
DELAY  
V
ADJ  
1.28 V  
5.1 k  
Figure 14. Adjustable RESET  
DELAY Function  
The reset delay circuit provides a programmable (by  
external capacitor) delay on the RESET output lead.  
Figure 16. Adjustable Output  
Voltage  
http://onsemi.com  
9
NCV8504 Series  
APPLICATION NOTES  
V
FLAG MONITOR  
Figure 17 shows the FLAG Monitor waveforms as a result  
of the circuit depicted in Figure 15. As the input voltage falls  
), the Monitor threshold is crossed. This causes the  
voltage on the FLAG output to go low.  
IN  
V
OUT  
C
0.1 μF  
*
IN  
C
33 μF  
**  
NCV8504  
OUT  
R
RST  
(V  
MON  
RESET  
V
MON  
*C required if regulator is located far from the power supply filter  
IN  
**C  
required for stability. Capacitor must operate at minimum  
temperature expected  
OUT  
MON  
Figure 18. Test and Application Circuit Showing  
Output Compensation  
Flag Monitor  
Ref. Voltage  
CALCULATING POWER DISSIPATION IN A  
SINGLE OUTPUT LINEAR REGULATOR  
FLAG  
The maximum power dissipation for a single output  
regulator (Figure 19) is:  
P
+ [V  
IN(max)  
* V  
]I  
(1)  
D(max)  
OUT(min) OUT(max)  
Figure 17. FLAG Monitor Circuit Waveform  
) V  
I
IN(max) Q  
where:  
SETTING THE DELAY TIME  
V
V
is the maximum input voltage,  
is the minimum output voltage,  
is the maximum output current for the  
IN(max)  
OUT(min)  
OUT(max)  
The delay time is controlled by the Reset Delay Low  
Voltage, Delay Switching Threshold, and the Delay Charge  
Current. The delay follows the equation:  
I
application, and  
[
C
+
]
(V * Reset Delay Low Voltage)  
DELAY dt  
t
I
I
is the quiescent current the regulator consumes at  
OUT(max)  
DELAY  
Q
Delay Charge Current  
.
Example:  
Using C  
Once the value of P  
permissible value of R  
is known, the maximum  
D(max)  
= 33 nF.  
DELAY  
can be calculated:  
qJA  
Assume reset Delay Low Voltage = 0.  
T
150°C *  
A
Use the typical value for V = 1.8 V (2.5 V, 3.3 V, and  
R
qJA  
+
(2)  
dt  
P
D
5.0 V options).  
Use the typical value for Delay Charge Current = 4.2 μA.  
The value of R  
can then be compared with those in the  
qJA  
package section of the data sheet. Those packages with  
[
]
33 nF(1.8 * 0)  
4.2 mA  
R ’s less than the calculated value in equation 2 will keep  
qJA  
t
+
+ 14 ms  
DELAY  
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.  
STABILITY CONSIDERATIONS  
The output or compensation capacitor helps determine  
three main characteristics of a linear regulator: startup  
delay, load transient response and loop stability.  
I
I
OUT  
IN  
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.  
SMART  
REGULATOR®  
V
V
IN  
OUT  
Control  
Features  
}
I
Q
Figure 19. Single Output Regulator with Key  
Performance Parameters Labeled  
The value for the output capacitor C  
shown in Figure 18  
OUT  
should work for most applications, however it is not  
necessarily the optimized solution.  
http://onsemi.com  
10  
NCV8504 Series  
100  
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  
90  
80  
70  
60  
determine the value of R  
:
qJA  
(3)  
R
qJA  
+ R  
qJC  
) R ) R  
qCS qSA  
where:  
50  
40  
R
qJC  
R
qCS  
R
qSA  
= the junctiontocase thermal resistance,  
= the casetoheatsink thermal resistance, and  
= the heatsinktoambient thermal resistance.  
0
200  
400  
Copper Area (mm )  
600  
800  
2
R
qJA  
appears in the package section of the data sheet. Like  
qJC  
Figure 20. 16 Lead SOW (Exposed Pad), qJA as a  
Function of the Pad Copper Area (2 oz. Cu  
Thickness), Board Material = 0.0625, G10/R4  
R
, it too is a function of package type. R  
and R  
are  
qCS  
qSA  
functions of the package type, heatsink and the interface  
between them. These values appear in heat sink data sheets  
of heat sink manufacturers.  
ORDERING INFORMATION  
Device  
NCV8504PWADJ  
NCV8504PWADJG  
Output Voltage  
Package  
Shipping  
SOW16 Exposed Pad  
47 Units/Rail  
47 Units/Rail  
SOW16 Exposed Pad  
(PbFree)  
Adjustable  
NCV8504PWADJR2  
NCV8504PWADJR2G  
SOW16 Exposed Pad  
1000 Tape & Reel  
1000 Tape & Reel  
47 Units/Rail  
SOW16 Exposed Pad  
(PbFree)  
NCV8504PW25  
SOW16 Exposed Pad  
NCV8504PW25G  
SOW16 Exposed Pad  
(PbFree)  
47 Units/Rail  
2.5 V  
3.3 V  
5.0 V  
NCV8504PW25R2  
NCV8504PW25R2G  
SOW16 Exposed Pad  
1000 Tape & Reel  
1000 Tape & Reel  
47 Units/Rail  
SOW16 Exposed Pad  
(PbFree)  
NCV8504PW33  
SOW16 Exposed Pad  
NCV8504PW33G  
SOW16 Exposed Pad  
(PbFree)  
47 Units/Rail  
NCV8504PW33R2  
NCV8504PW33R2G  
SOW16 Exposed Pad  
1000 Tape & Reel  
1000 Tape & Reel  
47 Units/Rail  
SOW16 Exposed Pad  
(PbFree)  
NCV8504PW50  
SOW16 Exposed Pad  
NCV8504PW50G  
SOW16 Exposed Pad  
(PbFree)  
47 Units/Rail  
NCV8504PW50R2  
NCV8504PW50R2G  
SOW16 Exposed Pad  
1000 Tape & Reel  
1000 Tape & Reel  
SOW16 Exposed Pad  
(PbFree)  
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging  
Specification Brochure, BRD8011/D.  
http://onsemi.com  
11  
NCV8504 Series  
PACKAGE DIMENSIONS  
SOIC 16 LEAD WIDE BODY  
EXPOSED PAD  
PDW SUFFIX  
CASE 751AG01  
ISSUE O  
U−  
A
M
NOTES:  
1. DIMENSIONING AND TOLERANCING PER ANSI  
Y14.5M, 1982.  
2. CONTROLLING DIMENSION: MILLIMETER.  
3. DIMENSION A AND B DO NOT INCLUDE MOLD  
PROTRUSION.  
16  
1
9
P
B
M
M
W
0.25 (0.010)  
R x 45  
_
8
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER  
SIDE.  
W−  
5. DIMENSION D DOES NOT INCLUDE DAMBAR  
PROTRUSION. ALLOWABLE PROTRUSION SHALL BE  
0.13 (0.005) TOTAL IN EXCESS OF THE D DIMENSION  
AT MAXIMUM MATERIAL CONDITION.  
6. 751R−01 OBSOLETE, NEW STANDARD 751R−02.  
G
14 PL  
PIN 1 I.D.  
DETAIL E  
TOP SIDE  
MILLIMETERS  
INCHES  
MIN  
DIM MIN  
MAX  
10.45  
7.60  
2.65  
0.49  
0.90  
MAX  
0.411  
0.299  
0.104  
0.019  
0.035  
C
A
B
C
D
F
10.15  
7.40  
2.35  
0.35  
0.50  
0.400  
0.292  
0.093  
0.014  
0.020  
F
T−  
0.10 (0.004)  
T
SEATING  
K
D16 PL  
0.25 (0.010)  
H
PLANE  
G
H
J
1.27 BSC  
0.050 BSC  
M
S
S
T
U
W
J
3.31  
0.25  
0.00  
4.58  
0
3.51  
0.32  
0.10  
4.78  
7
0.130  
0.010  
0.000  
0.180  
0
0.138  
0.012  
0.004  
0.188  
7
DETAIL E  
K
L
M
P
R
_
_
_
_
SOLDERING FOOTPRINT*  
10.05  
0.25  
10.55  
0.75  
0.395  
0.010  
0.415  
0.029  
1
8
9
EXPOSED PAD  
0.350  
L
Exposed  
Pad  
0.175  
0.050  
16  
BACK SIDE  
C
L
0.188  
0.200  
0.376  
C
L
0.074  
0.024  
0.145  
DIMENSIONS: MILLIMETERS  
*For additional information on our PbFree strategy and soldering  
details, please download the ON Semiconductor Soldering and  
Mounting Techniques Reference Manual, SOLDERRM/D.  
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,  
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: 8002829855 Toll Free  
USA/Canada  
Europe, Middle East and Africa Technical Support:  
Phone: 421 33 790 2910  
Japan Customer Focus Center  
Phone: 81357733850  
ON Semiconductor Website: www.onsemi.com  
Order Literature: http://www.onsemi.com/orderlit  
Literature Distribution Center for ON Semiconductor  
P.O. Box 5163, Denver, Colorado 80217 USA  
Phone: 3036752175 or 8003443860 Toll Free USA/Canada  
Fax: 3036752176 or 8003443867 Toll Free USA/Canada  
Email: orderlit@onsemi.com  
For additional information, please contact your local  
Sales Representative  
NCV8504/D  

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