ON NCV4299D1 150 ma low−dropout voltage regulator Datasheet

NCV4299
150 mA Low−Dropout
Voltage Regulator
The NCV4299 is a family of precision micropower voltage regulators
with an output current capability of 150 mA. It is available in 5.0 V or
3.3 V output voltage, and is housed in an 8−lead SON and in a 14−lead
SON (fused) package.
The output voltage is accurate within "2% with a maximum
dropout voltage of 0.5 V at 100 mA. Low Quiescent current is a
feature drawing only 90 mA with a 1 mA load. This part is ideal for any
and all battery operated microprocessor equipment.
The device features microprocessor interfaces including an
adjustable reset output and adjustable system monitor to provide
shutdown early warning. An inhibit function is available on the
14−lead part. With inhibit active, the regulator turns off and the device
consumes less than 1.0 mA of quiescent current.
The part can withstand load dump transients making it suitable for
use in automotive environments.
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MARKING
DIAGRAMS
8
SO−8
D SUFFIX
CASE 751
8
1
4299
ALYW
G
1
14
NCV4299G
AWLYWW
Features
• 5.0 V, 3.3 V "2%, 150 mA
• Extremely Low Current Consumption
14
90 mA (Typ) in the ON Mode
♦ t1.0 mA in the Off Mode
Early Warning
Reset Output Low Down to VQ = 1.0 V
Adjustable Reset Threshold
Wide Temperature Range
Fault Protection
♦ 60 V Peak Transient Voltage
♦ −40 V Reverse Voltage
♦ Short Circuit
♦ Thermal Overload
Internally Fused Leads in the SO−14 Package
Inhibit Function with mA Current Consumption in the Off Mode
NCV Prefix for Automotive and Other Applications Requiring Site
and Change Control
Pb−Free Packages are Available
♦
•
•
•
•
•
•
•
•
•
1
SO−14
1
D SUFFIX
CASE 751A 14
V4299xxG
AWLYWW
1
xx
= 33 (3.3 V Version)
= 50 (5.0 V Version)
A
= Assembly Location
L, WL = Wafer Lot
Y
= Year
W, WW = Work Week
G
= Pb−Free Package
G
= Pb−Free Package
(Note: Microdot may be in either location)
PIN CONNECTIONS
I
1
8
SI
RADJ
SO
RO
D
GND
1
RADJ
D
GND
GND
GND
INH
RO
Q
14
SI
I
GND
GND
GND
Q
SO
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 21 of this data sheet.
© Semiconductor Components Industries, LLC, 2006
April, 2006 − Rev. 16
1
Publication Order Number:
NCV4299/D
NCV4299
Q
I
Bandgap
Reference
Current Limit and
Saturation Sense
−
+
RSO
RRO
SO
1.36 V
+
−
SI
8 mA
+
+
−
RADJ
RO
−
+
1.85 V
D
GND
Figure 1. SO−8 Simplified Block Diagram
PIN FUNCTION DESCRIPTION − SO−8 PACKAGE
Pin
Symbol
Description
1
I
2
SI
3
RADJ
4
D
5
GND
6
RO
Reset Output. NPN collector output with internal 20 kW pullup to Q. Notifies user of out of regulation condition. Leave open if not used.
7
SO
Sense Output. NPN collector output with internal 20 kW pullup to Q. Can be used to provide early warning
of an impending reset condition. Leave open if not used.
8
Q
Input. Battery Supply Input Voltage. Bypass directly to GND with ceramic capacitor.
Sense Input. Can provide an early warning signal of an impending reset condition when used with SO.
Connect to Q if not used.
Reset Adjust. Use resistor divider to Q to adjust reset threshold lower. Connect to GND if not used.
Reset Delay. Connect external capacitor to ground to set delay time.
Ground.
5.0 V, 3.3 V, "2%, 150 mA output. Use 22 mF, ESR t 5.0 W to ground.
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2
NCV4299
Q
I
Bandgap
Reference
Current Limit and
Saturation Sense
−
+
RSO
RRO
INH
SO
1.36 V
SI
+
−
8 mA
+
+
−
RADJ
RO
−
+
1.85 V
D
GND
Figure 2. SO−14 Simplified Block Diagram
PIN FUNCTION DESCRIPTION − SO−14 PACKAGE
Pin
Symbol
Description
1
RADJ
2
D
3
GND
Ground.
4
GND
Ground.
5
GND
Ground.
6
INH
Inhibit. Connect to I if not needed. A high turns the regulator on.
7
RO
Reset Output. NPN collector output with internal 20 kW pullup to Q. Notifies user of out of regulation condition.
8
SO
Sense Output. NPN collector output with internal 20 kW pullup to Q. Can be used to provide early warning
of an impending reset condition.
9
Q
10
GND
Ground.
11
GND
Ground.
12
GND
Ground.
13
I
14
SI
Reset Adjust. Use resistor divider to Q to adjust reset threshold lower. Connect to GND if not used.
Reset Delay. Connect external capacitor to ground to set delay time.
5.0 V, 3.3 V, "2%, 150 mA output. Use 22 mF, ESR t 5.0 W to ground.
Input. Battery Supply Input Voltage.
Sense Input. Can provide an early warning signal of an impending reset condition when used with SO.
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NCV4299
MAXIMUM RATINGS
Rating
Symbol
Min
Max
Unit
Input Voltage to Regulator (DC)
VI
−40
45
V
Input Peak Transient Voltage to Regulator wrt GND
−
−
60
V
VINH
−40
45
V
Sense Input (SI)
VSI
−0.3
45
V
Sense Input (SI)
ISI
−1.0
1.0
mA
Reset Threshold (RADJ)
VRE
−0.3
7.0
V
Reset Threshold (RADJ)
IRE
−10
10
mA
Reset Delay (D)
VD
−0.3
7.0
V
Reset Output (RO)
VRO
−0.3
7.0
V
Sense Output (SO)
VSO
−0.3
7.0
V
Output (Q)
VQ
−0.3
16
V
Output (Q)
IQ
−5.0
−
mA
ESD Capability, Human Body Model (Note 5)
ESDHB
2.0
−
kV
ESD Capability, Machine Model (Note 5)
ESDMM
200
−
V
ESD Capability, Charged Device Model (Note 5)
ESDCDM
1.0
−
kV
Junction Temperature
TJ
−
150
°C
Storage Temperature
Tstg
−50
150
°C
4.5
4.4
45
45
−40
150
Inhibit (INH) (Note 1)
OPERATING RANGE
Input Voltage
5.0 V Version
3.3 V Version
VI
Junction Temperature
TJ
V
°C
LEAD TEMPERATURE SOLDERING REFLOW (Note 3)
Lead Temperature Soldering (Note 5)
Reflow (SMD styles only), leaded
60−150 sec above 183, 30 sec max at peak
TSLD
Reflow (SMD styles only), lead free
60s−150 sec above 217, 40 sec max at peak
TSLD
Moisture Sensitivity Level
MSL
°C
−
240 Pk
−
265 Pk
°C
Level 1
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
1. 14 pin package only.
2. Preliminary numbers.
3. Per IPC / JEDEC J−STD−020C.
4. Measured to Pin 4. All ground pins connected to ground.
5. This device series incorporates ESD protection and is tested by the following methods:
ESD HBM tested per AEC−Q100−002 (EIA/JESD22−A114)
ESD MM tested per AEC−Q100−003 (EIA/JESD22−A115)
ESD CDM tested per EIA/JES D22/C101, Field Induced Charge Model.
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NCV4299
THERMAL CHARACTERISTICS
Characteristic
SO−8
SO−14
Unit
Test Conditions (Typical Value)
Note 6
Note 7
Note 8
Junction−to−Tab (yJLx, qJLx)
Junction−to−Ambient (RθJA, qJA)
54
172
52
144
48
118
Junction−to−Tab (yJLx, qJLx)
Junction−to−Ambient (RθJA, qJA)
19
112
21
89
20
67
°C/W
°C/W
6. 2 oz Copper, 50 mm sq Copper area, 1.5 mm thick FR4
7. 2 oz Copper, 150 mm sq Copper area, 1.5 mm thick FR4
8. 2 oz Copper, 500 mm sq Copper area, 1.5 mm thick FR4
ELECTRICAL CHARACTERISTICS (−40°C < TJ < 150°C; VI = 13.5 V unless otherwise noted.)
Characteristic
Symbol
Test Conditions
Min
Typ
Max
Unit
Output Q
Output Voltage (5.0 V Version)
VQ
1.0 mA < IQ < 150 mA, 6.0 V < VI < 16 V
4.9
5.0
5.1
V
Output Voltage (3.3 V Version)
VQ
1.0 mA < IQ < 150 mA, 5.5 V < VI < 16 V
3.23
3.3
3.37
V
Current Limit
IQ
250
400
500
mA
Quiescent Current (Iq = II – IQ)
Iq
INH ON, IQ < 1.0 mA, TJ = 25°C
−
86
100
mA
Quiescent Current (Iq = II – IQ)
Iq
INH ON, IQ < 1.0 mA
−
90
105
mA
Quiescent Current (Iq = II – IQ)
Iq
INH ON, IQ = 10 mA
−
170
500
mA
Quiescent Current (Iq = II – IQ)
Iq
INH ON, IQ = 50 mA
−
0.7
2.0
mA
Quiescent Current (Iq = II – IQ)
Iq
INH = 0 V, TJ = 25°C
−
−
1.0
mA
IQ = 100 mA
−
0.22
0.50
V
Dropout Voltage (Note 9)
Vdr
−
Load Regulation
DVQ
IQ = 1.0 mA to 100 mA
−
5.0
30
mV
Line Regulation
DVQ
VI = 6.0 V to 28 V, IQ = 1.0 mA
−
10
25
mV
Power Supply Ripple Rejection
PSRR
ƒr = 100 Hz, Vr = 1.0 Vpp, IQ = 100 mA
−
66
−
dB
VQ < 1.0 V
−
−
0.8
V
VQ > 4.85 V
VQ > 3.2 V
3.5
3.5
−
−
−
−
−
−
3.0
0.5
10
2.0
4.50
2.96
4.60
3.06
4.80
3.16
10
20
40
−
−
0.17
0.17
0.40
0.40
5.6
−
−
kW
Inhibit (INH) (14 Pin Package Only)
Inhibit Off Voltage
VINHOFF
Inhibit On Voltage
5.0 V Version
3.3 V Version
VINHON
Input Current
IINHON
IINHOFF
V
INH ON
INH = 0 V
mA
Reset (RO)
Switching Threshold
5.0 V Version
3.3 V Version
Vrt
Output Resistance
RRO
Reset Output Low Voltage
5.0 V Version
3.3 V Version
VRO
Allowable External Reset Pullup Resistor
−
−
kW
V
Q < 4.5 V, Internal RRO, IRO = −1.0 mA
Q < 2.96 V, Internal RRO, IRO = −1.0 mA
VROext
V
External Resistor to Q
Delay Upper Threshold
VUD
−
1.5
1.85
2.2
V
Delay Lower Threshold
VLD
−
0.4
0.5
0.6
V
9. Measured when the output voltage VQ has dropped 100 mV from the nominal value obtained at VI = 13.5 V.
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NCV4299
ELECTRICAL CHARACTERISTICS (continued) (−40°C < TJ < 150°C; VI = 13.5 V unless otherwise noted.)
Characteristic
Symbol
Test Conditions
Min
Typ
Max
−
−
−
0.017
0.1
0.1
Q < 4.5 V, Internal RRO, VD = 1.0 V
Q < 2.96 V, Internal RRO, VD = 1.0 V
4.0
−
7.1
−
12
−
Unit
Reset (RO)
Delay Output Low Voltage
5.0 V Version
3.3 V Version
VD
V
Delay Charge Current
5.0 V Version
3.3 V Version
ID
Power On Reset Delay Time
td
CD = 100 nF
17
28
35
ms
Reset Reaction Time
trr
CD = 100 nF
0.5
2.2
4.0
ms
Q > 3.5 V
Q > 2.3 V
1.26
−
1.36
−
1.44
−
Q < 4.5 V, Internal RRO
Q < 2.96 V, Internal RRO
Reset Adjust Switching Threshold
5.0 V Version
3.3 V Version
mA
VRADJ,TH
V
Input Voltage Sense (SI and SO)
Sense Input Threshold High
VSI,HIGH
−
1.34
1.45
1.54
V
Sense Input Threshold Low
VSI,LOW
−
1.26
1.36
1.44
V
50
90
130
mV
Sense Input Hysteresis
−
(Sense Threshold High) −
(Sense Threshold Low)
Sense Input Current
ISI
−
−1.0
0.1
1.0
mA
Sense Output Resistance
RSO
−
10
20
40
kW
Sense Output Low Voltage
VSO
−
0.1
0.4
V
VSI < 1.20 V, VI > 4.2 V, ISO = 0 mA
Allowable External Sense Out
Pullup Resistor
RSOext
−
5.6
−
−
kW
SI High to SO High Reaction Time
tpdSOLH
−
−
4.4
8.0
ms
SI Low to SO Low Reaction Time
tpdSOHL
−
−
3.8
5.0
ms
II
IQ
VI
IINH
(14−Pin Part Only)
ID
D
CD
100 nF
VRADJ
VSI
IRADJ
ISI
VQ
INH
NCV4299
VINH
Q
I
ID
RO
VRO
SO
VSO
RADJ
SI
GND
Iq
Figure 3. Measurement Circuit
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NCV4299
TYPICAL PERFORMANCE CHARACTERISTICS − 5.0 V OPTION
5.1
6
OUTPUT VOLTAGE, VQ VOLTS
VQ VOLTS
VI = 13.5 V
RL = 1 kW
5.0
4.9
−40 −20
5
4
3
2
1
RL = 50 W
0
20
0
40
60 80 100 120 140 160
TEMPERATURE C
15
Figure 5. Output Voltage VQ vs. Input Voltage
Figure 4. Output Voltage VQ vs. Temperature TJ
8.0
500
VI = 13.5 V
VD = 1 V
RL = 5 kW
DROP VOLTAGE, Vdr, mV
CHARGE CURRENT, mA
5
10
INPUT VOLTAGE, VI VOLTS
0
7.0
6.0
−40 −20
125°C
400
25°C
300
−40°C
200
100
0
0
20
40
60 80 100 120 140 160
TEMPERATURE C
0
Figure 6. Charge Current ld, c vs. Temperature TJ
50
100
OUTPUT CURRENT IQ, mA
150
Figure 7. Drop Voltage Vdr vs. Output Current IQ
3.2
1.5
1.4
2.4
VUD
2.0
VRADJTH, V
SWITCHING VOLTAGE, V
2.8
1.6
1.2
1.3
1.2
1.1
0.8
VLD, VI = 13.5V
1.0
0.4
0.0
−40
0
40
80
TEMPERATURE, C
120
0.9
−40
160
Figure 8. Switching Voltage VUD and VLD vs.
Temperature TJ
0
40
80
TEMPERATURE TJ, C
120
Figure 9. Reset Adjust Switching Threshold
VRADJTH vs. Temperature TJ
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7
160
NCV4299
350
VSIU
1.5
1.4
VSI, V
OUTPUT CURRENT IQ, mA
1.6
VSIL
1.3
1.2
1.1
300
TJ = 25°C
250
TJ = 125°C
200
150
100
50
VQ = 0 V
1.0
−40
0
40
80
TEMPERATURE, C
120
0
160
0
CURRENT CONSUMPTION Iq, mA
CURRENT CONSUMPTION Iq, mA
2.0
1.5
1.0
0.5
0
30
20
40
OUTPUT CURRENT IQ, mA
10
50
6.0
4.0
2.0
0.0
60
0
40
120
80
OUTPUT CURRENT IQ, mA
160
Figure 13. Current Consumption Iq vs. Output
Current IQ
16.0
CURRENT CONSUMPTION Iq, mA
40
RRO, RSO RESISTANCE, Ohms
40
8.0
Figure 12. Current Consumption Iq vs. Output
Current IQ
VI = 13.5V
RL = 5 kW
30
20
10
−40
20
30
INPUT VOLTAGE, VI, V
Figure 11. Output Current Limit IQ vs. Input
Voltage, VI
Figure 10. Sense Threshold VSI vs. Temperature TJ
0.0
10
0
40
80
TEMPERATURE C
120
14.0
12.0
10.0
RL 200W RL 100W
RL 33W
6.0
4.0
2.0
0.0
160
RL 50W
8.0
0
Figure 14. RRO, RSO Resistance vs. Temperature
10
20
30
INPUT VOLTAGE VI, V
Figure 15. Current Consumption Iq vs. Input
Voltage VI
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8
40
NCV4299
85
CURRENT CONSUMPTION Iq, mA
6
IQ 100 mA
80
75
70
65
60
5
IQ 100mA
IQ 50mA
4
3
IQ 10mA
2
1
0
6
8
10
12 14 16
18 20
INPUT VOLTAGE VI, V
24
22
26
6
8
10
12 14 16
18 20
INPUT VOLTAGE VI, V
45
VI = 13.5V
TA = 25°C
40
Unstable
Region
35
30
1 mF to 100 mF
0.1 mF
25
20
15
Stable
Region
10
5
Unstable Region
0.1 mF Only
0
0
20
22
24
Figure 17. Current Consumption Iq vs. Input
Voltage VI
Figure 16. Current Consumption Iq vs. Input
Voltage VI
OUTPUT CAPACITOR ESR, Ohms
CURRENT CONSUMPTION Iq, mA
90
40
60
80
100 120
OUTPUT CURRENT, mA
140
Figure 18. Stability vs. Output Capacitor ESR
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160
26
NCV4299
TYPICAL PERFORMANCE CHARACTERISTICS − 3.3 V OPTION
100
IQ = 1 mA
10
1
0.1
−40 −20
20
40
60
80
10
8
6
TJ = 25°C
TJ = 150°C
TJ = −40°C
4
2
100 120 140
0
20
40
60
80
100 120 140 160 180
TJ, JUNCTION TEMPERATURE (°C)
IQ, OUTPUT CURRENT (mA)
Figure 19. Current Consumption vs. Junction
Temperature
Figure 20. Current Consumption vs. Output
Current
5
3.5
TJ = 25°C
4
3
RL = 33 W
2
RL = 50 W
1
RL = 100 W
200
0
0
IQ, REVERSE OUTPUT CURRENT (mA)
12
0
0
VQ, OUTPUT VOLTAGE (V)
IQ, CURRENT CONSUMPTION (mA)
IQ, CURRENT CONSUMPTION (mA)
VI = 13.5 V
10
20
30
40
3.3
3.2
3.1
3.0
0
40
80
120
VI, INPUT VOLTAGE (V)
TJ, JUNCTION TEMPERATURE (°C)
Figure 21. Current Consumption vs. Input
Voltage
Figure 22. Output Voltage vs. Junction
Temperature
0
VI = 0 V
−50
TJ = 125°C
−100
−150
TJ = 25°C
−200
TJ = −40°C
−250
−300
0
VI = 13.5V
RL = 1 kW
3.4
2.9
−40
50
IQ, MAXIMUM OUTPUT CURRENT (mA)
IQ, CURRENT CONSUMPTION (mA)
1000
10
20
30
40
50
160
350
TJ = 25°C
300
250
TJ = 125°C
200
150
100
50
VQ = 0 V
0
0
25
50
VQ, OUTPUT VOLTAGE (V)
VI, INPUT VOLTAGE (V)
Figure 23. Reverse Output Current vs. Output
Voltage
Figure 24. Maximum Output Current vs. Input
Voltage
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10
NCV4299
6
1000
OUTPUT CAPACITOR ESR (W)
VQ, OUTPUT VOLTAGE (V)
TJ = 25°C
5
RL = 50 W
4
3
2
1
0
1
2
3
4
Max ESR for Vin = 25 V
10
1
Stable Region
0.1
CQ = 22 mF
TJ = 150°C
0
5
10
40
70
100
130
VI, INPUT VOLTAGE (V)
IQ, OUTPUT CURRENT (mA)
Figure 25. Output Voltage at Input Voltage
Extremes
Figure 26. 3.3 V Output Stability with Output
Capacitor ESR
1000
100
IINH, INHIBIT INPUT CURRENT (mA)
0.02
Max ESR for Vin = 6 V
Max ESR for Vin = 25 V
10
1
Stable Region
0.1
CQ = 22 mF
TJ = −40°C
0.01
0
10
TJ = −40°C
0
TJ = 25°C
TJ = 125°C
−0.01
−0.02
−0.03
−0.04
TJ = 150°C
−0.05
40
70
100
130
0
10
20
30
40
IQ, OUTPUT CURRENT (mA)
VI, INPUT VOLTAGE (V)
Figure 27. 3.3 V Output Stability with Output
Capacitor ESR
Figure 28. Inhibit Input Current at Input
Voltage Extremes
6
TJ = −40°C
5
TJ = 25°C
4
TJ = 125°C
3
2
1
0
0
INH = OFF
0.01
VRT, RESET TRIGGER THRESHOLD (V)
OUTPUT CAPACITOR ESR (W)
Max ESR for Vin = 6 V
0.01
0
IINH, INHIBIT INPUT CURRENT (mA)
100
10
20
30
40
3.25
VI = 13.5 V
3.20
3.15
3.10
3.05
Reset
3.00
2.95
−40 −20
0
20
40
60
80
100 120 140
VINH, INHIBIT INPUT VOLTAGE (V)
TJ, JUNCTION TEMPERATURE (°C)
Figure 29. Inhibit Input Current at Inhibit Input
Voltage Extremes
Figure 30. Reset Trigger Threshold vs.
Junction Temperature
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NCV4299
25
20
15
0
20
40
60
80
VSI High
1.45
1.40
VSI Low
1.35
1.30
−40 −20
100 120 140
0
20
40
60
80
100 120 140
TJ, JUNCTION TEMPERATURE (°C)
TJ, JUNCTION TEMPERATURE (°C)
Figure 31. Reset Delay Time vs. Junction
Temperature
Figure 32. Sense Threshold vs. Junction
Temperature
8
1.15
7
1.14
VDR, DROP VOLTAGE (V)
ICH, DELAY CAPACITOR CHARGE
CURRENT (mA)
10
−40 −20
6
5
4
3
2
VI = 13.5 V
VD = 1 V
1
0
−40 −20
VUD, VLD, SWITCHING VOLTAGE (V)
VI = 13.5 V
VI = 13.5 V
CD = 100 nF
VSI, SENSE THRESHOLD (V)
30
1.50
TJ = 125°C
1.13
1.12
1.11
1.10
TJ = −40°C
1.09
TJ = 25°C
1.08
1.07
1.06
VDR = VImin − VQ
1.05
0
20
40
60
80
100 120
140
0
40
80
120
160
TJ, JUNCTION TEMPERATURE (°C)
IQ, OUTPUT CURRENT (mA)
Figure 33. Delay Capacitor Charge Current vs.
Junction Temperature
Figure 34. Drop Voltage vs. Output Current
3.0
1.5
VI = 13.5 V
1.4
2.5
2.0
1.3
VUD
VRADJ,th (V)
TRD, RESET DELAY TIME (ms)
35
1.5
1.0
1.2
1.1
VLD
0.5
1.0
0
−40
0
40
80
120
160
0.9
−40
0
40
80
120
160
TJ, JUNCTION TEMPERATURE (°C)
TJ, JUNCTION TEMPERATURE (°C)
Figure 35. Switching Voltage VUD and VLD vs.
Junction Temperature
Figure 36. Reset Adjust Switching Threshold
vs. Junction Temperature
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12
1.5
40
TJ = 25°C
RRO, RSO RESISTANCE (kW)
IQ, CURRENT CONSUMPTION (mA)
NCV4299
1.0
0.5
IQ = 10 mA
IQ = 1 mA
0
0
10
20
30
35
30
25
20
15
10
−40
40
0
40
80
120
160
VI, INPUT VOLTAGE (V)
TJ, JUNCTION TEMPERATURE (°C)
Figure 37. Current Consumption vs. Input
Voltage
Figure 38. RRO, RSO Resistance vs. Junction
Temperature
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NCV4299
APPLICATION DESCRIPTION
NCV4299
Other features of the regulator include an undervoltage
reset function and a sense circuit. The reset function has an
adjustable time delay and an adjustable threshold level. The
sense circuit trip level is adjustable and can be used as an
early warning signal to the controller. An inhibit function
that turns off the regulator and reduces the current
consumption to less than 1.0 mA is a feature available in the
14 pin package.
The NCV4299 is a family of precision micropower
voltage regulators with an output current capability of
150 mA at 5.0 V and 3.3 V.
The output voltage is accurate within "2% with a
maximum dropout voltage of 0.5 V at 100 mA. Low
quiescent current is a feature drawing only 90 mA with a
100 mA load. This part is ideal for any and all battery
operated microprocessor equipment.
Microprocessor control logic includes an active reset
output RO (with delay), and a SI/SO monitor which can be
used to provide an early warning signal to the
microprocessor of a potential impending reset signal. The
use of the SI/SO monitor allows the microprocessor to finish
any signal processing before the reset shuts the
microprocessor down. Internal output resistors on the RO
and SO pins pulling up to the output pin Q reduce external
component count. An inhibit function is available on the
14−lead part. With inhibit active, the regulator turns off and
the device consumes less that 1.0 mA of quiescent current.
The active reset circuit operates correctly at an output
voltage as low as 1.0 V. The reset function is activated
during the powerup sequence or during normal operation if
the output voltage drops outside the regulation limits.
The reset threshold voltage can be decreased by the
connection of an external resistor divider to the RADJ lead.
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.
Output Regulator
The output is controlled by a precision trimmed reference.
The PNP output has saturation control for regulation while
the input voltage is low, preventing oversaturation. Current
limit and voltage monitors complement the regulator design
to give safe operating signals to the processor and control
circuits.
Stability Considerations
The input capacitor CI is necessary for compensating
input line reactance. Possible oscillations caused by input
inductance and input capacitance can be damped by using a
resistor of approximately 1.0 W in series with CI.
The output or compensation capacitor helps determine
three main characteristics of a linear regulator: startup 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
manufacturer’s data sheet usually provides this information.
The value for the output capacitor CQ shown in Figures 39
and 40 should work for most applications, however, it is not
necessarily the optimized solution. Stability is guaranteed at
values CQ w 22 mF and an ESR v 5.0 W within the
operating temperature range. Actual limits are shown in a
graph in the typical performance characteristics section.
NCV4299 Circuit Description
The low dropout regulator in the NCV4299 uses a PNP
pass transistor to give the lowest possible dropout voltage
capability. The current is internally monitored to prevent
oversaturation of the device and to limit current during over
current conditions. Additional circuitry is provided to
protect the device during overtemperature operation.
The regulator provides an output regulated to 2%.
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NCV4299
VBAT
I
CI*
Q
VDD
RRADJ1
0.1 mF
RADJ
CQ**
22 mF
Microprocessor
D
CD
NCV4299
RRADJ2
RS11
SI
RS12
SO
I/O
RO
GND
I/O
*CI required if regulator is located far from the power supply filter.
**CQ required for stability. Cap must operate at minimum temperature expected.
Figure 39. Test and Application Circuit Showing all Compensation and Sense
Elements for the 8 Pin Package Part
VBAT
I
CI*
Q
VDD
RRADJ1
0.1 mF
RADJ
CQ**
22 mF
Microprocessor
D
CD
NCV4299
RRADJ2
RS11
SI
RS12
INH
INH
SO
I/O
RO
GND
I/O
*CI required if regulator is located far from the power supply filter.
**CQ required for stability. Cap must operate at minimum temperature expected.
Figure 40. Test and Application Circuit Showing all Compensation and Sense
Elements for the 14 Pin Package Part with Inhibit Function
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NCV4299
Reset Output (RO)
the delay timer (VD) drops below the lower threshold
voltage VLD, the reset output voltage VRO is brought low to
reset the processor.
The reset output RO 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 RO is valid for VQ as low as 1.0 V.
A reset signal, Reset Output (RO, low voltage) is
generated as the IC powers up. After the output voltage VQ
increases above the reset threshold voltage VRT, the delay
timer D is started. When the voltage on the delay timer VD
passes VUD, the reset signal RO goes high. A discharge of
the delay timer (VD) is started when VQ drops and stays
below the reset threshold voltage VRT. When the voltage of
VI
t
< tRR
VQ
VRT
t
dV + ID
dt
CD
VD
VUD
VLD
VRO
td
t
tRR
VRO, SAT
t
Power−on−Reset
Thermal
Shutdown
Voltage Dip
at Input
Undervoltage
Secondary
Spike
Overload
at Output
Figure 41. Reset Timing Diagram
Reset Adjust (RADJ)
Reset Delay (D)
The reset threshold VRT can be decreased from a typical
value of 4.65 V to as low as 3.5 V by using an external
voltage divider connected from the Q lead to the pin RADJ,
as shown in Figures 39 and 40. The resistor divider keeps the
voltage above the VRADJ,TH, (typ. 1.35 V), for the desired
input voltages and overrides the internal threshold detector.
Adjust the voltage divider according to the following
relationship:
The reset delay circuit provides a delay (programmable by
capacitor CD) on the reset output RO lead. The delay lead D
provides charge current ID (typically 8.0 mA) to the external
delay capacitor CD during the following times:
1. During Powerup (once the regulation threshold has
been exceeded).
2. After a reset event has occurred and the device
is back in regulation. The delay capacitor is
set to discharge when the regulation (VRT, reset
threshold voltage) has been violated. When
the delay capacitor discharges to down to VLD,
the reset signal RO pulls low.
VTHRES + VRADJ, TH · (RADJ1 ) RADJ2)ńRADJ2
(eq. 1)
If the reset adjust option is not needed, the RADJ−pin
should be connected to GND causing the reset threshold to
go to its default value (typ. 4.65 V).
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NCV4299
Setting the Delay Time
Sense Input (SI)/Sense Output (SO) Voltage Monitor
The delay time is set by the delay capacitor CD and the
charge current ID. The time is measured by the delay
capacitor voltage charging from the low level of VD,sat to the
higher level VUD. The time delay follows the equation:
An on−chip comparator is available to provide early
warning to the microprocessor of a possible reset signal. The
reset signal typically turns the microprocessor off
instantaneously. This can cause unpredictable results with
the microprocessor. The signal received from the SO pin will
allow the microprocessor time to complete its present task
before shutting down. This function is performed by a
comparator referenced to the band gap voltage. The actual
trip point can be programmed externally using a resistor
divider to the input monitor (SI) (Figures 39 and 40). The
typical threshold is 1.35 V on the SI Pin.
td + [CD (VUD−VD, sat)]ńID
(eq. 2)
Example:
Using CD = 100 nF.
Use the typical value for VD,sat = 0.1 V.
Use the typical value for VUD = 1.8 V.
Use the typical value for Delay Charge Current ID = 6.5 mA.
td + [100 nF(1.8−0.1 V)]ń6.5 mA + 26.2 ms
(eq. 3)
Signal Output
When the output voltage VQ drops below the reset
threshold voltage VRT, the voltage on the delay capacitor VD
starts to drop. The time it takes to drop below the lower
threshold voltage of VLD is the reset reaction time, tRR. This
time is typically 1.0 ms for a delay capacitor of 0.1 mF. The
reset reaction time can be estimated from the following
relationship:
tRR + 10 nsńnF
Figure 42 shows the SO Monitor waveforms as a result of
the circuits depicted in Figures 39 and 40. As the output
voltage VQ falls, the monitor threshold VSI,LOW is crossed.
This causes the voltage on the SO output to go low sending
a warning signal to the microprocessor that a reset signal may
occur in a short period of time. TWARNING is the time the
microprocessor has to complete the function it is currently
working on and get ready for the reset shutdown signal.
(eq. 4)
CD
Sense
Input
Voltage
VSL, High
VQ
VSL, Low
SI
VSI,LOW
Sense
Output
VRO
tPD SO LH
t
tPD SO HL
High
SO
Low
TWARNING
t
Figure 42. SO Warning Timing Waveform
Figure 43. Sense Timing Diagram
Calculating Power Dissipation in a Single Output
Linear Regulator
Iq is the quiescent current the regulator consumes at IQ(max).
Once the value of PD(max) is known, the maximum
permissible value of RqJA can be calculated:
The maximum power dissipation for a single output
regulator is:
RqJA + (150°C−TA)ńPD
PD(max) + [VI(max)−VQ(min)] IQ(max) ) VI(max)Iq
(eq. 6)
The value of RqJA can then be compared with those in the
package section of the data sheet. Those packages with
RqJA’s less than the calculated value in Equation 6 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.
(eq. 5)
where:
VI(max) is the maximum input voltage,
VQ(min) is the minimum output voltage,
IQ(max) is the maximum output current for the application,
and
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17
NCV4299
Heatsinks
where:
A heatsink 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 RqJA:
RqJC = the junction−to−case thermal resistance,
RqCS = the case−to−heatsink thermal resistance, and
RqSA = the heatsink−to−ambient thermal resistance.
RqJC appears in the package section of the data sheet. Like
RqJA, it too is a function of package type. RqCS and RqSA are
functions of the package type, heatsink and the interface
between them. These values appear in heatsink data sheets
of heatsink manufacturers. Thermal, mounting, and
heatsinking are discussed in the ON Semiconductor
application note AN1040/D, available on the
ON Semiconductor website.
RqJA + RqJC ) RqCS ) RqSA
(eq. 7)
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NCV4299
SOIC 8 LEAD
1000
Cu Area = 10 mm2, 1.0 oz
R(t) (°C/W)
100
25 mm2, 1.0 oz
100 mm2, 1.0 oz
10
250 mm2, 1.0 oz
500 mm2, 1.0 oz
1
0.1
0.000001 0.00001
0.0001
0.001
0.01
0.1
1
10
100
1000
100
1000
Time (sec)
Figure 44. Transient Thermal Response Simulation to a Single Pulse 1 oz (Log−Log)
1000
R(t) (°C/W)
100
50% Duty Cycle
20%
10%
10
5%
2%
1 1%
0.1
Single Pulse (SOIC−8)
0.01
Psi LA (SOIC−8)
0.001
0.000001 0.00001
0.0001
0.001
0.01
0.1
1
10
Pulse Time (sec)
Figure 45. Transient Thermal Response Simulation to a Single Pulse with Duty Cycles Applied (Log−Log)
(PCB = 50 mm2 1 oz)
R(t) (°C/W)
1000
100 50% Duty Cycle
20%
10%
10
5%
2%
1 1%
0.1
Single Pulse (SOIC−8)
0.01
Psi LA (SOIC−8)
0.001
0.000001 0.00001
0.0001
0.001
0.01
0.1
1
10
100
Pulse Time (sec)
Figure 46. Transient Thermal Response Simulation to a Single Pulse with Duty Cycles Applied (Log−Log)
(PCB = 250 mm2 1 oz)
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19
1000
NCV4299
SOIC 14 LEAD
1000
Cu Area = 10 mm2, 1.0 oz
R(t) (°C/W)
100
25 mm2, 1.0 oz
100 mm2, 1.0 oz
10
250 mm2, 1.0 oz
500 mm2, 1.0 oz
1
0.1
0.000001 0.00001
0.0001
0.001
0.01
0.1
1
10
100
1000
100
1000
Time (sec)
Figure 47. Transient Thermal Response Simulation to a Single Pulse 1 oz (Log−Log)
R(t) (°C/W)
1000
100 50% Duty Cycle
20%
10%
10 5%
2%
1 1%
0.1 Single Pulse (SOIC−14)
0.01
Psi LA (SOIC−14)
0.001
0.000001 0.00001
0.0001
0.001
0.01
0.1
1
10
Pulse Time (sec)
Figure 48. Transient Thermal Response Simulation to a Single Pulse with Duty Cycles Applied (Log−Log)
(PCB = 50 mm2 1 oz)
100
R(t) (°C/W)
50% Duty Cycle
10 20%
10%
5%
1 2%
1%
0.1 Single Pulse (SOIC−14)
0.01
Psi LA (SOIC−14)
0.001
0.000001 0.00001
0.0001
0.001
0.01
0.1
1
10
100
Pulse Time (sec)
Figure 49. Transient Thermal Response Simulation to a Single Pulse with Duty Cycles Applied (Log−Log)
(PCB = 250 mm2 1 oz)
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20
1000
NCV4299
ORDERING INFORMATION
Package
Shipping†
SO−8
98 Units/Rail
NCV4299D1G
SO−8
(Pb−Free)
98 Units/Rail
NCV4299D1R2
SO−8
2500 Tape & Reel
SO−8
(Pb−Free)
2500 Tape & Reel
SO−14
55 Units/Rail
NCV4299D2G
SO−14
(Pb−Free)
55 Units/Rail
NCV4299D2R2
Device
NCV4299D1
NCV4299D1R2G
NCV4299D2
SO−14
2500 Tape & Reel
NCV4299D2R2G
SO−14
(Pb−Free)
2500 Tape & Reel
NCV4299D233G
SO−14
(Pb−Free)
55 Units/Rail
NCV4299D233R2G
SO−14
(Pb−Free)
2500 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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21
NCV4299
PACKAGE DIMENSIONS
SOIC−8 NB
CASE 751−07
ISSUE AH
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
6. 751−01 THRU 751−06 ARE OBSOLETE. NEW
STANDARD IS 751−07.
−X−
A
8
5
0.25 (0.010)
S
B
1
M
Y
M
4
K
−Y−
G
C
N
DIM
A
B
C
D
G
H
J
K
M
N
S
X 45 _
SEATING
PLANE
−Z−
0.10 (0.004)
H
D
0.25 (0.010)
M
Z Y
S
X
M
J
S
SOLDERING FOOTPRINT*
1.52
0.060
7.0
0.275
4.0
0.155
0.6
0.024
1.270
0.050
SCALE 6:1
mm Ǔ
ǒinches
*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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22
MILLIMETERS
MIN
MAX
4.80
5.00
3.80
4.00
1.35
1.75
0.33
0.51
1.27 BSC
0.10
0.25
0.19
0.25
0.40
1.27
0_
8_
0.25
0.50
5.80
6.20
INCHES
MIN
MAX
0.189
0.197
0.150
0.157
0.053
0.069
0.013
0.020
0.050 BSC
0.004
0.010
0.007
0.010
0.016
0.050
0 _
8 _
0.010
0.020
0.228
0.244
NCV4299
PACKAGE DIMENSIONS
SO−14
D SUFFIX
CASE 751A−03
ISSUE G
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
−A−
14
8
−B−
1
P 7 PL
0.25 (0.010)
7
G
M
B
M
F
R X 45 _
C
−T−
SEATING
PLANE
D 14 PL
0.25 (0.010)
M
T B
J
M
K
S
A
S
DIM
A
B
C
D
F
G
J
K
M
P
R
MILLIMETERS
MIN
MAX
8.55
8.75
3.80
4.00
1.35
1.75
0.35
0.49
0.40
1.25
1.27 BSC
0.19
0.25
0.10
0.25
0_
7_
5.80
6.20
0.25
0.50
INCHES
MIN
MAX
0.337
0.344
0.150
0.157
0.054
0.068
0.014
0.019
0.016
0.049
0.050 BSC
0.008
0.009
0.004
0.009
0_
7_
0.228
0.244
0.010
0.019
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.
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LITERATURE FULFILLMENT:
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Phone: 480−829−7710 or 800−344−3860 Toll Free USA/Canada Japan: ON Semiconductor, Japan Customer Focus Center
2−9−1 Kamimeguro, Meguro−ku, Tokyo, Japan 153−0051
Fax: 480−829−7709 or 800−344−3867 Toll Free USA/Canada
Phone: 81−3−5773−3850
Email: [email protected]
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Order Literature: http://www.onsemi.com/litorder
For additional information, please contact your
local Sales Representative.
NCV4299/D