L5150BN
5 V low dropout voltage regulator
Features
Max DC supply voltage
VS
40 V
Max output voltage tolerance
ΔVo
±2%
Max dropout voltage
Vdp
500 mV
Output current
I0
150 mA
Quiescent current
Iq
50 µA(1)
'!0'03
SOT-223
1. Typical value.
Description
■
Operating DC supply voltage range
5.6 V to 40 V
■
Low dropout voltage
■
Low quiescent current
■
Precison output voltage 5 V ±2%
■
Very wide stability range with low value output
capacitor
■
Thermal shutdown and short-circuit protection
■
Wide temperature range (Tj = -40 °C to 150 °C)
Table 1.
L5150BN is a low dropout linear 5 V regulator
particularly suitable for automotive applications.
High output voltage accurancy (2%) is kept over
wide temperature range line and load variation.
Its sophisticated design allows to have extremely
low quiescent current.
The maximum input voltage is 40 V.
The regulator output current is internally limited
and the device is protected against short-circuit,
overload and overtemperature conditions. In
addition, only low-value ceramic capacitor on
output is required for stability.
Device summary
Order codes
Package
SOT-223
February 2012
Tube
Tape & reel
L5150BN
L5150BNTR
Doc ID 15541 Rev 8
1/20
www.st.com
1
Contents
L5150BN
Contents
1
Block diagram and pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
2.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4
Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Package and PCB thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1
4
5
2/20
SOT-223 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1
ECOPACK®
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2
SOT-223 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3
SOT-223 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Doc ID 15541 Rev 8
L5150BN
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SOT-223 thermal parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
SOT-223 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Doc ID 15541 Rev 8
3/20
List of figures
L5150BN
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
4/20
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Output voltage vs. Tj . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Output voltage vs. VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Drop voltage vs. output current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Current consumption vs. output current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Current consumption vs. output current (at light load condition). . . . . . . . . . . . . . . . . . . . . . 8
Current consumption vs. input voltage (Io = 0.1 mA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Current consumption vs. input voltage (Io = 75 mA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Current limitation vs. Tj . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Current limitation vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Short-circuit current vs. Tj . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Short-circuit current vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PSRR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Stability region . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Maximum load variation response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
SOT-223 PC board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Rthj-amb vs. PCB copper area in open box free air condition . . . . . . . . . . . . . . . . . . . . . . 12
SOT-223 thermal impedance junction ambient single pulse . . . . . . . . . . . . . . . . . . . . . . . 13
Thermal fitting model of Vreg in SOT-223 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SOT-223 package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
SOT-223 tape and reel shipment (suffix “TR”) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Doc ID 15541 Rev 8
L5150BN
1
Block diagram and pins description
Block diagram and pins description
Figure 1.
Block diagram
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Table 2.
Pins description(1)
N°
Pin name
1
VS
2
GND
3
Vo
Function
Supply voltage, block directly to GND on the IC with a
capacitor.
Ground reference
5 V regulated output. Block to GND with a ceramic capacitor
(C0 > 220 nF for regulator stability)
1. For the pins configuration see outlines at page 1.
Doc ID 15541 Rev 8
5/20
Electrical specifications
L5150BN
2
Electrical specifications
2.1
Absolute maximum ratings
Stressing the device above the rating listed in the Table 3: Absolute maximum ratings may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the operating sections of
this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
program and other relevant quality documents.
Table 3.
Absolute maximum ratings
Symbol
2.2
Parameter
Value
Unit
-0.3 to 40
V
Vsdc
DC supply voltage
Isdc
Input current
Vo
DC output voltage
-0.3 to 6
Io
DC output current
internally limited
Tj
Junction temperature
internally limited
V
-40 to 150
°C
VESD HBM
ESD voltage level (HBM-MIL STD 883C)
±2
kV
VESD CDM
ESD voltage level (CDM AEC-Q100-011)
±750
V
Thermal data
m
Table 4.
Symbol
Thermal data(1)
Parameter
Value
Unit
Rthj-case
Thermal resistance junction to case:
SOT-223
20
°K/W
Rthj-amb
Thermal resistance junction to ambient:
SOT-223
79
°K/W
1. The values quoted are for PCB 58 mm x 58 mm x 2 mm, FR4, double copper layer with single heatsink
layer, copper thickness 35 µm, copper area 2 cm2.
6/20
Doc ID 15541 Rev 8
L5150BN
2.3
Electrical specifications
Electrical characteristics
Values specified in this section are for VS = 5.6 V to 31 V, Tj = -40 °C to +150 °C unless
otherwise stated.
Table 5.
General
Pin
Symbol
Min.
Typ.
Vo
Vo_ref
Output voltage
VS = 8 V to 18 V,
Io = 8 mA to 150 mA
4.9
5.0
5.1
V
Vo
Vo_ref
Output voltage
VS = 5.6 V to 31 V,
Io = 8 mA to 150 mA
4.85
5.0
5.15
V
Vo
Vo_ref
Output voltage
VS = 5.6 V to 31 V,
Io = 0.1 mA to 8 mA
4.75
5.0
5.25
V
Vo
Ishort
Short-circuit current
VS = 13.5 V
0.65
1.10
1.45
A
VS = 13.5 V
0.28
0.45
0.66
A
VS = 6 V to 28 V, Io = 30 mA
40
mV
VS = 8 V to 18 V,
Io = 8 mA to 150 mA
55
Vo
Ilim
VS, Vo
Vline
Vo
VS, Vo
Vload
Vdp
Parameter
Output current
Test condition
limitation(1)
Line regulation voltage
Load regulation voltage
Drop voltage(2)
mV
VS = 13.5 V,
Tj = 25 °C,
Io = 8 mA to 150 mA
40
Io = 150 mA
500
Hz(3)
VS, Vo
SVR
Ripple rejection
fr = 100
Vo
Ioth_H
Normal consumption mode
output current
VS = 8 V to 18 V
Vo
Ioth_L
Very low consumption mode
output current
VS = 8 V to 18 V
Vo
Ioth_Hyst
Output current switching
threshold hysteresis
VS = 13.5 V, Tj = 25 °C
0.8
VS = 13.5 V,
Io = 0.1 mA to 1 mA, Tj = 25 °C
50
VS, Vo
VS, Vo
Iqn_1
Iqn_150
Current consumption
Iqn_1 = IVs – Io
60
mA
1.1
Thermal protection temperature
Tw_hy
Thermal protection temperature
hysteresis
mA
mA
80
µA
95
VS = 13.5 V, Io = 150 mA
Tw
mV
dB
8
VS = 13.5 V, Io = 0.1 mA to 1 mA,
Current consumption
Iqn_150 = IVs – Io
Max. Unit
3.2
150
4.2
mA
190
°C
10
°C
1. Measured output current when the output voltage has dropped 100 mV from its nominal value obtained at 13.5 V and Io =
75 mA.
2. VS - Vo measured dropout when the output voltage has dropped 100 mV from its nominal value obtained at 13.5 V and Io =
75 mA.
3. Guaranteed by design.
Doc ID 15541 Rev 8
7/20
Electrical specifications
L5150BN
2.4
Electrical characteristics curves
Figure 2.
Output voltage vs. Tj
Figure 3.
Output voltage vs. VS
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Figure 5.
Figure 4.
Current consumption vs. output
current
Drop voltage vs. output current
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Current consumption vs. output
current (at light load condition)
Figure 7.
Current consumption vs. input
voltage (Io = 0.1 mA)
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Doc ID 15541 Rev 8
9V9
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L5150BN
Electrical specifications
Figure 8.
Current consumption vs. input
voltage (Io = 75 mA)
Figure 9.
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Current limitation vs. Tj
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Figure 10. Current limitation vs. input voltage Figure 11. Short-circuit current vs. Tj
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Figure 13. PSRR
PSRR [dB]
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10
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Doc ID 15541 Rev 8
1
10
100
1000
0
10000
FREQUENCY [KHz]
9/20
Electrical specifications
2.5
L5150BN
Application information
The voltage regulator uses a p-channel mos transistor as a regulating element. With this
structure a very low dropout voltage at current up to 150 mA is obtained. The output voltage
is regulated up to input supply voltage of 40 V. The high-precision of the output voltage (2%)
is obtained with a pre-trimmed reference voltage. The voltage regulator automatically adapts
its own quiescent current to the output current level. In light-load conditions the quiescent
current goes to 55 µA only (low consumption mode). This procedure features a certain
hysteresis on the output current (see Figure 6). Short-circuit protection to GND and a
thermal shutdown are provided.
Figure 14. Application schematic
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The input capacitor C 1 ≥ 100 µF is necessary as backup supply for negative pulses which
may occur on the line. The second input capacitor C 2 ≥ 220 nF is needed when the C1 is too
distant from the VS pin and it compensates smooth line disturbances. The C0 ceramic
capacitor, connected to the output pin, is for bypassing to GND the high-frequency noise
and it guarantees stability even during sudden line and load variations. Suggested value is
C 0 = 220 nF with ESR ≥ 100 mΩ .
Stability region is reported in Figure 15.
10/20
Doc ID 15541 Rev 8
L5150BN
Electrical specifications
Figure 15. Stability region
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Note: The curve which describes the minimum ESR is derived from characterization data on the regulator
with connected ceramic capacitors which feature low ESR values (at 100 kHz). Any capacitor with
further lower ESR than the given plot value must be evaluated in each and every case.
Figure 16. Maximum load variation response
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Doc ID 15541 Rev 8
11/20
Package and PCB thermal data
L5150BN
3
Package and PCB thermal data
3.1
SOT-223 thermal data
Figure 17. SOT-223 PC board
.
'!0'03
Note: Layout condition of Rth and Zth measurements (PCB: double layer,
FR4 area= 58 mm x 58 mm, PCB thickness = 2 mm, Cu thickness = 35 µm (front and back side),
footprint dimension 4.1 mm x 6.5 mm ).
Figure 18. Rthj-amb vs. PCB copper area in open box free air condition
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12/20
Doc ID 15541 Rev 8
L5150BN
Package and PCB thermal data
Figure 19. SOT-223 thermal impedance junction ambient single pulse
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Equation 1: pulse calculation formula
Z
THδ
= R
TH
⋅δ+Z
THtp
(1 – δ)
where δ = tP/T
Figure 20. Thermal fitting model of Vreg in SOT-223
*$3*&)7
Doc ID 15541 Rev 8
13/20
Package and PCB thermal data
Table 6.
14/20
L5150BN
SOT-223 thermal parameter
Area (cm2)
Footprint
R1 (°K/W)
1.53
R2 (°K/W)
3.21
R3 (°K/W)
5.2
R4 (°K/W)
24
R5 (°K/W)
0.1
R6 (°K/W)
100
C1 (W.s/°K)
0.00004
C2 (W.s/°K)
0.0003
C3 (W.s/°K)
0.03
C4 (W.s/°K)
0.16
C5 (W.s/°K)
1000
C6 (W.s/°K)
0.5
Doc ID 15541 Rev 8
2
45
2
L5150BN
Package and packing information
4
Package and packing information
4.1
ECOPACK®
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
4.2
SOT-223 mechanical data
Figure 21. SOT-223 package dimensions
*$3*36
Doc ID 15541 Rev 8
15/20
Package and packing information
Table 7.
L5150BN
SOT-223 mechanical data
mm.
inch
DIM.
Min.
Typ.
A
Max.
Typ.
1.8
Max.
0.071
B
0.6
0.7
0.85
0.024
0.027
0.033
B1
2.9
3
3.15
0.114
0.118
0.124
c
0.24
0.26
0.35
0.009
0.01
0.014
D
6.3
6.5
6.7
0.248
0.256
0.264
e
2.3
0.09
e1
4.6
0.181
E
3.3
3.5
3.7
0.13
0.138
0.146
H
6.7
7
7.3
0.264
0.276
0.287
V
A1
16/20
Min.
10 (max)
0.02
0.1
Doc ID 15541 Rev 8
0.0008
0.004
L5150BN
4.3
Package and packing information
SOT-223 packing information
Figure 22. SOT-223 tape and reel shipment (suffix “TR”)
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Doc ID 15541 Rev 8
17/20
Revision history
5
L5150BN
Revision history
Table 8.
18/20
Document revision history
Date
Revision
Changes
18-Jun-2007
1
Initial release.
14-May-2008
2
Corrected Table 2: Pins description : inverted 1 and 3 pins
descriptions.
Updated Table 5: General :
– Vo_ref parameter: updated test conditions and values.
– Vline and Vshort : updated test condition
– Ishort: changed values from 0.65/0.95/1.25 to 0.65/1.10/1.45
(Min/Typ/Max)
– Ilim: changed values from 0.7/1/1.30 to 0.28/0.45/0.66, added note
– Vdp: added note
– Inserted Ioth_L, Ioth_H, Ioth_Hyst rows
– Iqn_1: changed values from 38/48 to 48/70 (Typ/Max).
09-Sep-2008
3
Updated Table 5: General :
– Vload parameter: changed test conditions.
Doc ID 15541 Rev 8
L5150BN
Revision history
Table 8.
Document revision history (continued)
Date
Revision
Changes
16-Jun-2009
4
Updated corporate template (from V2 to V3)
Changed document title
Section : Features on cover page
– Iq on table: changed value from 48 µA to 50 µA
– Added row in bullet list
Table 2: Pins description
Vo: changed ceramic capacitor expression for Function
Table 3: Absolute maximum ratings
– Updated all symbols
Table 4: Thermal data
– Rthj-amb: changed value
– Updated TableFootnote
Table 5: General
– Vload: changed max value for Vs = 8 V to 18 V, added new row
– Iqn_1: changed Test condition (added Tj = 25 °C), changed typ/max
value for Tj = 25 °C , added new row
– Iqn_150: changed typ value
Added Figure 2: Output voltage vs. Tj
Added Figure 3: Output voltage vs. VS
Added Figure 4: Drop voltage vs. output current
Added Figure 5: Current consumption vs. output current
Added Figure 6: Current consumption vs. output current (at light load
condition)
Added Figure 7: Current consumption vs. input voltage (Io = 0.1 mA)
Added Figure 8: Current consumption vs. input voltage (Io = 75 mA)
Added Figure 9: Current limitation vs. Tj
Added Figure 10: Current limitation vs. input voltage
Added Figure 11: Short-circuit current vs. Tj
Added Figure 12: Short-circuit current vs. input voltage
Added Figure 13: PSRR
Section 2.5: Application information
– Changed section title from “Voltage regulator“ to “Application
information“
– Updated text
– Added Figure 14: Application schematic
– Added Figure 16: Maximum load variation response
Added Section 3: Package and PCB thermal data
Changed Section 4.1: ECOPACK®
04-Dec-2009
5
Updated features list.
Updated Section 2.5: Application information.
06-Apr-2010
6
Updated Table 5: General:
– Iqn_1 and Iqn_150: updated test parameter.
30-Jan-2012
7
Modified Figure 15: Stability region on page 11.
07-Feb-2012
8
Modified Figure 15: Stability region on page 11.
Doc ID 15541 Rev 8
19/20
L5150BN
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
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