LD59150
Datasheet
1.5 A low-dropout linear regulator with programmable soft-start
Features
•
•
AEC-Q100 qualified
Dual supply pins
–
V
IN
: 0.8 V to 5.5 V
–
•
•
•
V
BIAS
: 2.7 V to 5.5 V
V
OUT
range: 0.8 V to 3.6 V
Ultra low-dropout: 65 mV typ. (125 mV max.) at 1.5 A
High V
OUT
accuracy
–
•
•
•
•
•
•
•
•
Maturity status link
LD59150
DFN6 (3x3)
Wettable Flanks
0.5% typ. at T
amb
–
2% max.
Power Good function
Programmable soft-start
Thermal shutdown
Current limitation circuit
Adjustable output voltage
Stable with low ESR output capacitor (> 2.2 µF)
DFN10 (3x3) mm package with wettable flanks
Operating temperature range: - 40 °C + 125 °C
Applications
•
•
•
•
•
Automotive and industrial post regulation
Generic POL
Automotive and industrial ASICs and FPGA supply
Telecom infrastructure
A.D.A.S. (advanced driver-assistance systems)
Description
The
LD59150
is a 1.5 A LDO regulator, designed to be used in several environments.
Two versions, Industrial and AEC-Q100 are available.
NMOS topology allows R
DS(on)
of the pass-element to be reduced, which results in a
very small dropout voltage even with a very low input supply voltage.
Output voltage can be adjusted from 0.8 to 3.6 V, by an external resistor divider.
The programmable soft-start circuit offers the possibility to control the inrush current
at start-up providing a monotonic supply voltage to the load.
The
LD59150
has enable pin to turn on/off (EN) the regulator and Power Good to
monitor the regulated output voltage (PG).
The combination of both can be used to set a desired power sequence in case of
multiple regulated rails.
The
LD59150
embeds protection functions, such as: current limit and thermal
shutdown.
DS12455
-
Rev 5
-
November 2020
For further information contact your local STMicroelectronics sales office.
www.st.com
LD59150
Maximum ratings
4
Maximum ratings
Table 2.
Absolute maximum ratings
Symbol
V
IN
V
BIAS
V
OUT
V
EN
V
ADJ
V
SS
V
PG
I
OUT
P
DIS
I
PG
T
ST
T
J
Parameter
Input voltage pin
Bias supply pin
DC output voltage
Enable input voltage
Adjustable pin voltage
Soft-start pin
Power Good pin
Output current
Maximum power dissipation
Power Good sink current
Storage temperature range
Operating junction temperature range
Value
-0.3 to 6
- 0.3 to 6
-0.3 to V
IN
+ 0.3
-0.3 to 6
-0.3 to 6
-0.3 to 6
-0.3 to 6
Internally limited
Refer to
Table 3. Thermal data
0 to 1.5
-55 to 150
-40 to 150
Unit
V
V
V
V
V
V
V
mA
W
mA
°C
°C
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur. Functional
operation under these conditions is not implied. All values are referred to GND.
Table 3.
Thermal data
Symbol
R
thJA
R
thJC
Parameter
Thermal resistance junction-ambient
Thermal resistance junction-case
Value
47.5
8
Unit
°C/W
°C/W
Note:
Thermal resistance refers to 4 layer JEDEC PCB (2S2P) test board with thermal vias.
Table 4.
ESD data
Symbol
HBM
CDM
Parameter
Human body model
Charged device model
DFN10 3 x 3
± 2000
± 750
Unit
V
V
DS12455
-
Rev 5
page 5/22
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