LM9036
Ultra-Low Quiescent Current Voltage Regulator
General Description
The LM9036 ultra-low quiescent current regulator features
low dropout voltage and low current in the standby mode.
With less than 25A Ground Pin current at a 0.1mA load, the
LM9036 is ideally suited for automotive and other battery
operated systems. The LM9036 retains all of the features
that are common to low dropout regulators including a low
dropout PNP pass device, short circuit protection, reverse
battery protection, and thermal shutdown. The LM9036 has
a 40V maximum operating voltage limit, a -40C to +125C
operating temperature range, and
5% output voltage toler-
ance over the entire output current, input voltage, and tem-
perature range.
Features
n
Ultra low Ground Pin current (I
GND
25A for I
OUT
= 0.1mA)
n
Fixed 5V, 3.3V, 50mA output
n
Output tolerance
5% over line, load, and temperature
n
Dropout voltage typically 200mV
@
I
OUT
= 50mA
n
-45V reverse transient protection
n
Internal short circuit current limit
n
Internal thermal shutdown protection
n
40V operating voltage limit
Typical Application
20001101
* Required if regulator is located more than 2" from power supply filter capacitor.
** Required for stability. Must be rated over intended operating temperature range. Effective series resistance (ESR) is critical, see Electrical
Characteristics. Locate capacitor as close as possible to the regulator output and ground pins. Capacitance may be increased without bound.
April 2004
LM9036
Ultra-Low
Quiescent
Current
V
oltage
Regulator
2004 National Semiconductor Corporation
DS200011
www.national.com
Connection Diagrams
TO-252
20001125
Top View
Order Number LM9036DT-5.0, LM9036DT-3.3
See NS Package Number TD03B
20001127
Top View
LM9036MM-3.3, LM9036MM-5.0
See NS Package Number MUA08A
20001128
Top View
LM9036M-3.3, LM9036M-5.0
See NS Package Number M08A
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2
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Input Voltage (Survival)
+55V, -45V
ESD Susceptibility (Note 2)
1.9kV
Power Dissipation (Note 3)
Internally limited
Junction Temperature (T
Jmax
)
150C
Storage Temperature Range
-65C to +150C
Lead Temperature (Soldering, 10
sec.)
260C
Operating Ratings
Operating Temperature Range
-40C to +125C
Maximum Input Voltage
(Operational)
40V
SO-8 (M08A)
JA
(Note 7)
140C/W
TO-252 (TD03B)
JA
(Note 7)
125C/W
TO-252 (TD03B)
JA
(Note 8)
50C/W
TO-252 (TD03B)
JC
(Note 7)
11C/W
MSO-8 (MUA08A)
JA
(Note 7)
200C/W
Electrical Characteristics - LM9036-5.0
V
IN
= 14V, I
OUT
= 10 mA, T
J
= 25C, unless otherwise specified. Boldface limits apply over entire operating temperature range
Parameter
Conditions
Min
(Note 5)
Typical
(Note 4)
Max
(Note 5)
Units
Output Voltage (V
OUT
)
4.80
5.00
5.20
V
5.5V
V
IN
26V,
0.1mA
I
OUT
50mA (Note 6)
4.75
5.00
5.25
Quiescent Current (I
GND
)
I
OUT
= 0.1mA, 8V
V
IN
24V
20
25
A
I
OUT
= 1mA, 8V
V
IN
24V
50
100
I
OUT
= 10mA, 8V
V
IN
24V
0.3
0.5
mA
I
OUT
= 50mA, 8V
V
IN
24V
2.0
2.5
Line Regulation (
V
OUT
)
6V
V
IN
40V, I
OUT
= 1mA
10
30
mV
Load Regulation (
V
OUT
)
0.1mA
I
OUT
5mA
10
30
mV
5mA
I
OUT
50mA
10
30
mV
Dropout Voltage (
V
OUT
)
I
OUT
= 0.1mA
0.05
0.10
V
I
OUT
= 50mA
0.20
0.40
V
Short Circuit Current (I
SC
)
V
OUT
= 0V
65
120
250
mA
Ripple Rejection (PSRR)
V
ripple
= 1V
rms
, F
ripple
= 120Hz
-40
-60
dB
Output Bypass Capacitance
(C
OUT
)
0.3
ESR 8
0.1mA
I
OUT
50mA
10
22
F
Electrical Characteristics - LM9036-3.3
V
IN
= 14V, I
OUT
= 10 mA, T
J
= 25C, unless otherwise specified. Boldface limits apply over entire operating temperature range
Parameter
Conditions
Min
(Note 5)
Typical
(Note 4)
Max
(Note 5)
Units
Output Voltage (V
OUT
)
3.168
3.30
3.432
V
5.5V
V
IN
26V,
0.1mA
I
OUT
50mA (Note 6)
3.135
3.30
3.465
Quiescent Current (I
GND
)
I
OUT
= 0.1mA, 8V
V
IN
24V
20
25
A
I
OUT
= 1mA, 8V
V
IN
24V
50
100
I
OUT
= 10mA, 8V
V
IN
24V
0.3
0.5
mA
I
OUT
= 50mA, 8V
V
IN
24V
2.0
2.5
Line Regulation (
V
OUT
)
6V
V
IN
40V, I
OUT
= 1mA
10
30
mV
Load Regulation (
V
OUT
)
0.1mA
I
OUT
5mA
10
30
mV
5mA
I
OUT
50mA
10
30
mV
Dropout Voltage (
V
OUT
)
I
OUT
= 0.1mA
0.05
0.10
V
I
OUT
= 50mA
0.20
0.40
V
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3
Electrical Characteristics - LM9036-3.3
(Continued)
V
IN
= 14V, I
OUT
= 10 mA, T
J
= 25C, unless otherwise specified. Boldface limits apply over entire operating temperature range
Parameter
Conditions
Min
(Note 5)
Typical
(Note 4)
Max
(Note 5)
Units
Short Circuit Current (I
SC
)
V
OUT
= 0V
65
120
250
mA
Ripple Rejection (PSRR)
V
ripple
= 1V
rms
, F
ripple
= 120Hz
-40
-60
dB
Output Bypass Capacitance
(C
OUT
)
0.3
ESR 8
0.1mA
I
OUT
50mA
22
33
F
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its specified operating ratings.
Note 2: Human body model, 100pF discharge through a 1.5k
resistor.
Note 3: The maximum power dissipation is a function of T
Jmax
,
JA
, and T
A
. The maximum allowable power dissipation at any ambient temperature is
P
D
= (T
Jmax
- T
A
)/
JA
. If this dissipation is exceeded, the die temperature will rise above 150C and the LM9036 will go into thermal shutdown.
Note 4: Typicals are at 25C (unless otherwise specified) and represent the most likely parametric norm.
Note 5: Tested limits are guaranteed to National's AOQL (Average Outgoing Quality Level) and 100% tested.
Note 6: To ensure constant junction temperature, pulse testing is used.
Note 7: Worst case (Free Air) per EIA / JESD51-3.
Note 8: Typical
JA
with 1 square inch of 2oz copper pad area directly under the ground tab.
Ordering Information
TO-252
SOIC
Mini SOIC
3.30V
LM9036DT-3.3
LM9036M-3.3
LM9036MM-3.3
5.00V
LM9036DT-3.3
LM9036M-5.0
LM9036MM-5.0
Typical Performance Characteristics
Dropout Voltage
Quiescent Current
20001108
20001111
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4
Typical Performance Characteristics
(Continued)
Quiescent Current
Quiescent Current
20001113
20001114
Peak Output Current
20001117
Applications Information
Unlike other PNP low dropout regulators, the LM9036 re-
mains fully operational to 40V. Owing to power dissipation
characteristics of the package, full output current cannot be
guaranteed for all combinations of ambient temperature and
input voltage.
The junction to ambient thermal resistance
JA
rating has
two distinct components: the junction to case thermal resis-
tance rating
JC
; and the case to ambient thermal resistance
rating
CA
. The relationship is defined as:
JA
=
JC
+
CA
.
On the TO-252 package the ground tab is thermally con-
nected to the backside of the die. Adding 1 square inch of 2
oz. copper pad area directly under the ground tab will im-
prove the
JA
rating to approximately 50C/W.
While the LM9036 has an internally set thermal shutdown
point of typically 150C, this is intended as a safety feature
only. Continuous operation near the thermal shutdown tem-
perature should be avoided as it may have a negative affect
on the life of the device.
Using the
JA
for a LM9036DT mounted on a circuit board as
defined at (Note 8), and using the formula for maximum
allowable dissipation given in (Note 3) for an ambient tem-
perature (T
A
) of +85C, we find that P
DMAX
= 1.3W. Including
the small contribution of the quiescent current I
Q
to the total
power dissipation, the maximum input voltage (while still
delivering 50mA output current) is 29.5V. The LM9036DT will
go into thermal shutdown when attempting to deliver the full
output current of 50mA, with an ambient temperature of
+85C, and the input voltage is greater than 29.5V. Similarly,
with an ambient temperature of 25C the P
DMAX
= 2.5W, and
the LM9036DT can deliver the full output current of 50mA
with an input voltage of up to 40V.
While the LM9036 maintains regulation to 55V, it will not
withstand a short circuit above 40V because of safe operat-
ing area limitations in the internal PNP pass device. Above
55V the LM9036 will break down with catastrophic effects on
the regulator and possibly the load as well. Do not use this
device in a design where the input operating voltage may
exceed 40V, or where transients are likely to exceed 55V.
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