TI1 LM9076QSX-5.0 150ma ultra-low quiescent current ldo regulator with delayed reset output Datasheet

LM9076Q
LM9076Q 150mA Ultra-Low Quiescent Current LDO Regulator with Delayed Reset
Output
Literature Number: SNVS713A
LM9076Q
General Description
Features
The LM9076Q is a ±3%, 150 mA logic controlled voltage regulator. The regulator features an active low delayed reset
output flag which can be used to reset a microprocessor system at turn-ON and in the event that the regulator output
voltage falls below a minimum value. An external capacitor
programs a delay time interval before the reset output pin can
return high.
Designed for automotive and industrial applications, the
LM9076Q contains a variety of protection features such as
thermal shutdown, input transient protection and a wide operating temperature range. The LM9076Q uses an PNP pass
transistor which allows low drop-out voltage operation.
■ AEC-Q100 Grade1 qualified (-40°C to +125°C)
■ Available with 5.0V or 3.3V output voltage
■ Ultra Low Ground Pin Current, 25 μA typical for 100 μA
load
■ VOUT initial accuracy of ±1.5%
■ VOUT accurate to ±3% over Load and Temperature
■
■
■
■
■
Conditions
Low Dropout Voltage, 200 mV typical with 150 mA load
Low Off State Ground Pin current for LM9076QBMA
Delayed RESET output pin for low VOUT detection
+70V/-50V Voltage Transients
Operational VIN up to +40V
Typical Applications
30154329
LM9076QS-x.x In 5 lead TO-263 package
30154330
LM9076QBMA-x.x in 8 lead SO package
© 2011 Texas Instruments Incorporated
301543
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150mA Ultra-Low Quiescent Current LDO Regulator with Delayed Reset Output
150mA Ultra-Low Quiescent Current LDO Regulator with
Delayed Reset Output
LM9076Q
November 16, 2011
LM9076Q
Connection Diagrams
30154328
Top View
Part Numbers LM9076QBMA-3.3 and LM9076QBMA-5.0
See NS SOIC Package Number M08A
30154327
Top View
Part Numbers LM9076QS-3.3 and LM9076QS-5.0
See NS TO-263 Package NumberTS5B
Ordering Information
Output Voltage
Package Type
Order Number
Package Marking
LM9076QBMA-3.3
SO-8
3.3
TO-263–5
SO-8
5.0
TO-263–5
9076BQMA3.3
Shipped As
LM9076QBMAX-3.3 9076BQMA3.3
Tape and Reel of
2500
LM9076QS-3.3
LM9076QS3.3
Rail of 45
LM9076QSX-3.3
LM9076QS3.3
LM9076QBMA-5.0
9076BQMA5.0
LM9076QBMAX-5.0 9076BQMA5.0
Feature
Rail of 95
AEC-Q100 Grade 1
Tape and /reel of 500 qualified. Automotive
Grade Production
Rail of 95
Flow. *
Tape and Reel of
2500
LM9076QS-5.0
LM9076QS5.0
Rail of 45
LM9076QSX-5.0
LM9076QS5.0
Tape and Reel of 500
Note: * Automotive grade (Q) product incorporates enhanced manufacturing and support processes for the automotive market, including defect detection
methodologies. Reliability qualification is compliant with the requirements and temperature grades defined in the AEC-Q100 standard. Automotive grade
products are identified with the letter Q. For more information go to http://www.national.com/ automotive.
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2
VIN(DC)
VIN(+Transient) t< 10ms, Duty Cycle
<1%
VIN(-Transient) t< 1ms, Duty Cycle
<1%
SHUTDOWN Pin
RESET Pin
CDELAY Pin
Storage Temperature
Junction Temperature (TJ )
ESD, HBM, per AEC - Q100 - 002
ESD, MM, per AEC - Q100 - 003
(Note 1)
VIN Pin
VSHUTDOWN Pin
Junction Temperature
Thermal Resistance TS5B (Note 6)
-15V to +55V
+70V
-50V
-15V to +52V
-0.3V to 20V
-0.3V to VOUT +0.3V
-65°C to +150°C
+175C
+/-2 kV
+/-250V
5.35V to 40V
0V to 40V
−40°C < TJ < +125°C
θja
75°C/W
θjc
Thermal Resistance M08A (Note 6)
2.9°C/W
θja
156°C/W
θjc
59°C/W
Electrical Characteristics for LM9076Q–3.3
The following specifications apply for VIN = 14V; ILOAD = 10 mA; TJ = +25C; COUT = 10 μF, 0.5Ω < ESR < 4.0Ω; unless otherwise
specified. Bold values indicate −40°C ≤ TJ ≤ +125°C.(Note 5, Note 4) Minimum and Maximum limits are guaranteed through
test, design or statistical correlation.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
3.251
3.30
3.349
V
1 mA ≤ ILOAD ≤ 150 mA
3.234
3.30
3.366
V
1mA ≤ ILOAD ≤ 150 mA
3.201
3.30
3.399
V
2.970
3.30
3.630
V
–
0
250
mV
−300
0
–
mV
9.0V ≤ VIN ≤ 16V,
ILOAD = 10 mA
–
4
25
mV
16V ≤ VIN ≤ 40V,
ILOAD = 10 mA
–
17
35
mV
Load Regulation
1 mA ≤ ILOAD ≤ 150 mA
–
42
60
mV
ILOAD = 10 mA
–
30
50
mV
Dropout Voltage
ILOAD = 50 mA
–
80
–
mV
ILOAD = 150 mA
–
150
250
mV
9V ≤ VIN ≤ 16V,
ILOAD = 100 uA
–
25
45
μA
9V ≤ VIN ≤ 40V,
ILOAD = 10 mA
–
125
160
μA
9V ≤ VIN ≤ 40V,
ILOAD = 50 mA
–
0.6
–
mA
9V ≤ VIN ≤ 16V,
ILOAD = 150 mA
–
3.6
4.5
mA
200
400
750
mA
LM9076Q–3.3 REGULATOR CHARACTERISTICS
−20°C ≤ TJ ≤ 85°C
Output Voltage
VIN = 60V,
VOUT
RLOAD = 1 kΩ, t ≤ 40ms
Output Voltage Off
LM9076Q BMA only
Reverse Battery
ΔVOUT
VDO
IGND
ISC
Line Regulation
Ground Pin Current
VOUT Short Circuit
Current
VSHUTDOWN ≥ 2V,
RLOAD = 1 kΩ
VIN = -15V,
RLOAD = 1 kΩ
VIN = 14V,
RLOAD = 1Ω
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LM9076Q
Operating Ratings
Absolute Maximum Ratings (Note 1)
LM9076Q
Symbol
Parameter
PSRR
Ripple Rejection
Conditions
VIN = (14VDC) + (1VRMS
@ 120Hz)
ILOAD = 50 mA
Min
Typ
Max
Units
50
60
–
dB
–
1.3
2.0
V
0.83
0.89
0.94
X VOUT
(Nom)
VOUT X 0.90
VOUT X 0.99
VOUT
V
–
0.2
0.3
V
RESET PIN CHARACTERISTICS
VOR
Minimum VIN for valid
(Note 3)
RESET Status
VTHR
VOUT Threshold for
RESET Low
VOH
RESET pin high voltage
External pull-up resistor
to VOUT = 100 kΩ
VOL
RESET pin low voltage
CDELAY < 4.0V,
ISINK = 250 µA
(Note 3)
CDELAY PIN CHARACTERISTICS
IDELAY
CDELAY Charging
Current
VIN = 14V,
VDELAY = 0V
-0.70
-0.42
-0.25
uA
VOL
CDELAY pin low voltage
VOUT < 4.0V,
ISINK = IDELAY
–
0.100
–
V
4.7
7.8
13.2
ms
tDELAY
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Reset Delay Time
VIN = 14V, CDELAY =
0.001 uF
VOUT rising from 0V, Δt
from VOUT > VOR to
RESET pin HIGH
4
The following specifications apply for VIN= 14V; VSHUTDOWN = Open; ILOAD = 10 mA; TJ = +25°C; COUT = 10 µF, 0.5Ω < ESR <
4.0Ω; unless otherwise specified. Bold Values indicate −40°C ≤ TJ ≤ 125°C. (Note 4), (Note 5) Minimum and Maximum limits
are guaranteed through test, design, or statistical correlation.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
4.925
5.00
5.075
V
1 mA ≤ ILOAD ≤ 150 mA
4.900
5.00
5.100
V
1 mA ≤ ILOAD ≤ 150 mA
4.850
5.00
5.150
V
4.500
5.00
5.500
V
–
0
250
mV
−300
0
–
mV
9.0V ≤ VIN ≤ 16V,
ILOAD = 10 mA
–
4
25
mV
16V ≤ VIN ≤ 40V,
ILOAD = 10 mA
–
17
35
mV
Load Regulation
1 mA ≤ ILOAD ≤ 150 mA
–
42
60
mV
ILOAD = 10 mA
–
30
50
mV
Dropout Voltage
ILOAD = 50 mA
–
80
–
mV
ILOAD = 150 mA
–
150
250
mV
9V ≤ VIN ≤ 16V,
ILOAD = 100 uA
–
25
45
μA
9V ≤ VIN ≤ 40V,
ILOAD = 10 mA
–
125
160
μA
9V ≤ VIN ≤ 40V,
ILOAD = 50 mA
–
0.6
–
mA
9V ≤ VIN ≤ 16V,
ILOAD = 150 mA
–
3.6
4.5
mA
Ground Pin Current in 9V ≤ VIN ≤ 40V,
Shutdown Mode
VSHUTDOWN = 2V
–
15
25
μA
200
400
750
mA
50
60
–
dB
–
1.3
2.0
V
0.83
0.89
0.94
X VOUT
(Nom)
VOUT X 0.90
VOUT X 0.99
VOUT
V
–
0.2
0.3
V
LM9076Q–5.0 REGULATOR CHARACTERISTICS
−20°C ≤ TJ ≤ 85°C
Output Voltage
VIN = 60V,
VOUT
RLOAD = 1 kΩ, t ≤ 40ms
Output Voltage Off
LM9076Q BMA only
Reverse Battery
ΔVOUT
VDO
Line Regulation
Ground Pin Current
IGND
ISC
VOUT Short Circuit
Current
PSRR
Ripple Rejection
VSHUTDOWN ≥ 2V,
RLOAD = 1 kΩ
VIN = -15V,
RLOAD = 1 kΩ
VIN = 14V,
RLOAD = 1Ω
VIN = (14VDC) + (1VRMS
@ 120Hz)
ILOAD = 50 mA
RESET PIN CHARACTERISTICS
VOR
Minimum VIN for valid
(Note 3)
RESET Status
VTHR
VOUT Threshold for
RESET Low
VOH
RESET pin high voltage
External pull-up resistor
to VOUT = 100 kΩ
VOL
RESET pin low voltage
CDELAY < 4.0V,
ISINK = 250 µA
(Note 3)
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LM9076Q
Electrical Characteristics for LM9076Q–5.0
LM9076Q
Symbol
Parameter
Conditions
Min
Typ
Max
Units
CDELAY PIN CHARACTERISTICS
IDELAY
CDELAY Charging
Current
VIN = 14V,
VDELAY = 0V
-0.70
-0.42
-0.25
uA
VOL
CDELAY pin low voltage
VOUT < 4.0V,
ISINK = IDELAY
–
0.100
–
V
7.1
11.9
20.0
ms
tDELAY
Reset Delay Time
VIN = 14V, CDELAY =
0.001 uF
VOUT rising from 0V, Δt
from VOUT > VOR to
RESET pin HIGH
SHUTDOWN CONTROL LOGIC — LM9076QBMA-5.0 Only
VIL(SD)
VSHUTDOWN pin falling
SHUTDOWN Pin Low
from 5.0V until VOUT
Threshold Voltage
>4.5V (VOUT = On)
1
1.5
–
V
VIH(SD)
VSHUTDOWN pin rising
SHUTDOWN Pin High
from 0V until VOUT < 0.5V
Threshold Voltage
(VOUT = Off)
–
1.5
2
V
–
35
–
μA
IIH(SD)
VSHUTDOWN = 40V
SHUTDOWN Pin High
VSHUTDOWN = 5V
Bias Current
VSHUTDOWN = 2V
–
15
35
μA
–
6
10
μA
IIL(SD)
SHUTDOWN Pin Low
VSHUTDOWN = 0V
Bias Current
–
0
–
μA
Note 1: Absolute Maximum Ratings indicate the limits beyond which the device may cease to function, and/or damage to the device may occur.
Note 2: Operating Ratings indicate conditions for which the device is intended to be functional, but does not guarantee specific performance limits. For guaranteed
specifications and conditions refer to the Electrical Characteristics
Note 3: Not Production tested, Guaranteed by Design. Minimum, Typical, and/or Maximum values are provided for informational purposes only.
Note 4: Pulse testing used maintain constant junction temperature (TJ ).
Note 5: The regulated output voltage specification is not guaranteed for the entire range of VIN and output loads. Device operational range is limited by the
maximum junction temperature (T J ). The junction temperature is influenced by the ambient temperature (T A ), package selection, input voltage (VIN ), and the
output load current. When operating with maximum load currents the input voltage and/or ambient temperature will be limited. When operating with maximum
input voltage the load current and/or the ambient temperature will be limited.
Note 6: Worst case (FREE AIR) per EIA/JESD51–3.
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LM9076Q
Typical Performance Characteristics
Output Capacitor ESR
Output Capacitor ESR
30154331
30154332
Output Voltage vs Low Input Voltage
Output Voltage vs Low Input Voltage
30154333
30154334
Ground Pin Current vs Low Input Voltage
Ground Pin Current vs Low Input Voltage
30154335
30154336
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LM9076Q
Ground Pin Current vs Load Current
Ground Pin Current vs Load Current
30154337
30154338
Output Voltage vs Input Voltage
Output Voltage vs Input Voltage
30154339
30154340
Output Voltage vs Junction Temperature
Output Voltage vs Junction Temperature
30154341
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30154342
8
LM9076Q
Dropout Voltage vs Load Current
Load Transient Response
30154344
30154343
Load Transient Response
Line Transient Response
30154345
30154346
Line Transient Response
Delayed Reset Time vs Vin
Normalized to VIN = 14V
30154347
30154350
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LM9076Q
Ripple Rejection
30154351
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REGULATOR BASICS
The LM9076Q regulator is suitable for Automotive and Industrial applications where continuous connection to a battery
supply is required (refer to the Typical Application circuit).
The pass element of the regulator is a PNP device which requires an output bypass capacitor for stability. The minimum
bypass capacitance for the output is 10 μF (refer to ESR limitations). A 22 μF, or larger, output bypass capacitor is recommended for typical applications
SHUTDOWN PIN - LM9076QBMA ONLY
The basic On/Off control of the regulator is accomplished with
the SHUTDOWN pin. By pulling the SHUTDOWN pin high the
regulator output is switched Off. When the regulator is
switched Off the load on the battery will be primarily due to
the SHUTDOWN pin current.
When the SHUTDOWN pin is low, or left open, the regulator
is switched On. When an unregulated supply, such as V BATTERY , is used to pull the SHUTDOWN pin high a series
resistor in the range of 10KΩ to 50KΩ is recommended to
provide reverse voltage transient protection of the SHUTDOWN pin. Adding a small capacitor (0.001uF typical) from
the SHUTDOWN pin to Ground will add noise immunity to
prevent accidental turn on due to noise on the supply line.
INPUT CAPACITOR
The LM9076Q requires a low source impedance to maintain
regulator stability because critical portions of the internal bias
circuitry are connected to directly to VIN. In general, a 10 μF
electrolytic capacitor, located within two inches of the
LM9076Q, is adequate for a majority of applications. Additionally, and at a minimum, a 0.1 μF ceramic capacitor should
be located between the LM9076Q VIN and Ground pin, and
as close as is physically possible to the LM9076Q itself .
RESET FLAG
The RESET pin is an open collector output which requires an
external pull-up resistor to develop the reset signal. The external pull-up resistor should be in the range of 10 kΩ to 200
kΩ.
At VIN values of less than typically 2V the RESET pin voltage
will be high. For VIN values between typically 2V and approximately VOUT + VBE the RESET pin voltage will be low. For
VIN values greater than approximately VOUT + VBE the RESET pin voltage will be dependent on the status of the VOUT
pin voltage and the Delayed Reset circuitry. The value of
VBE is typically 600 mV at 25°C and will decrease approximately 2 mV for every 1°C increase in the junction temperature. During normal operation the RESET pin voltage will be
high .
Any load condition that causes the VOUT pin voltage to drop
below typically 89% of normal will activate the Delayed Reset
circuit and the RESET pin will go low for the duration of the
delay time.
Any line condition that causes VIN pin voltage to drop below
typically VOUT + VBE will cause the RESET pin to go low without activating the Delayed Reset circuitry.
Excessive thermal dissipation will raise the junction temperature and could activate the Thermal Shutdown circuitry
which, in turn, will cause the RESET pin to go low.
For the LM9076QBMA devices, pulling the SHUTDOWN pin
high will turn off the output which, in turn, will cause the RESET pin to go low once the VOUT voltage has decayed to a
value that is less than typically 89% of normal. See Figure 2.
OUTPUT CAPACITOR
An output bypass capacitor is required for stability. This capacitance must be placed between the LM9076Q VOUT pin
and Ground pin, as close as is physically possible, using
traces that are not part of the load current path.
The output capacitor must meet the requirements for minimum capacitance and also maintain the appropriate ESR
value across the entire operating ambient temperature range.
There is no limit to the maximum output capacitance as long
as ESR is maintained.
The minimum bypass capacitance for the output is 10 μF (refer to ESR limitations). A 22 μF, or larger, output bypass
capacitor is recommended for typical applications.
Solid tantalums capacitors are recommended as they generally maintain capacitance and ESR ratings over a wide temperature range. Ceramic capacitor types XR7 and XR5 may
be used if a series resistor is added to simulate the minimum
ESR requirement. See Figure 1.
Aluminum electrolytic capacitors are not recommended as
they are subject to wide changes in capacitance and ESR
across temperature.
RESET DELAY TIME
When the regulator output is switched On, or after recovery
from brief VOUT fault condition, the RESET flag can be can be
programmed to remain low for an additional delay time. This
will give time for any system reference voltages, clock signals,
etc., to stabilize before the micro-controller resumes normal
operation.
This delay time is controlled by the capacitor value on the
CDELAY pin. During normal operation the CDELAY capacitor is
charged to near VOUT . When a VOUT fault causes the RESET pin to go low, the CDELAY capacitor is quickly discharged
to ground. When the VOUT fault is removed, and VOUT returns
to the normal operating value, the CDELAY capacitor begins
charging at a typical constant 0.420 uA rate. When the voltage
on the CDELAY capacitor reaches the same potential as the
VOUT pin the RESET pin will be allowed to return high.
The typical RESET delay time can be calculated with the following formula:
30154348
FIGURE 1. Using Low ESR Capacitors
DELAY CAPACITOR
The capacitor on the Delay pin must be a low leakage type
since the charge current is minimal (420 nA typical) and the
pin must fully charge to VOUT. Ceramic, Mylar, and
polystyrene capacitor types are generally recommended, although changes in capacitance values across temperature
changes will have some effect on the delay timing.
Any leakage of the IDELAY current, be it through the delay capacitor or any other path, will extend the delay time, possibly
to the point that the Reset pin output does not go high.
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LM9076Q
Application Information
LM9076Q
tDELAY = VOUT X (CDELAY / IDELAY )
age (VIN), and the output load current. When operating with
maximum load currents the input voltage and/or ambient temperature will be limited. When operating with maximum input
voltage the load current and/or the ambient temperature will
be limited.
Even though the LM9076Q is equipped with circuitry to protect itself from excessive thermal dissipation, it is not recommended that the LM9076Q be operated at, or near, the
maximum recommended die junction temperature (TJ) as this
may impair long term device reliability.
The thermal protection circuity monitors the temperature at
the die level. When the die temperature exceeds typically
160°C the voltage regulator output will be switched off.
For the LM9076Q–3.3 with a CDELAY value of 0.001 uF and a
IDELAY value of 0.420 uA the typical RESET delay time is:
tDELAY =3.3V × (0.001 uF / 0.420 uA) = 7.8 ms
For the LM9076Q–5.0 with a CDELAY value of 0.001 uF and a
IDELAY value of 0.420 uA the typical RESET delay time is:
tDELAY = 5.0V X (0.001uF / 0.420uA) = 11.9 ms
THERMAL PROTECTION
Device operational range is limited by the maximum junction
temperature (TJ). The junction temperature is influenced by
the ambient temperature (TA), package selection, input volt-
30154349
FIGURE 2. Typical Reset Pin Operational Waveforms
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12
LM9076Q
Physical Dimensions inches (millimeters) unless otherwise noted
8-Lead (0.150" Wide) Molded SO Package
NS Package Number M08A
5-Lead TO-263
NS Package Number TS5B
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150mA Ultra-Low Quiescent Current LDO Regulator with Delayed Reset Output
LM9076Q
Notes
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