STLQ020PU19R [STMICROELECTRONICS]

200 mA ultra-low quiescent current LDO;
STLQ020PU19R
型号: STLQ020PU19R
厂家: ST    ST
描述:

200 mA ultra-low quiescent current LDO

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STLQ020  
Datasheet  
200 mA ultra-low quiescent current LDO  
Features  
Operating input voltage range: 2 V to 5.5 V  
Output current up to 200 mA  
Ultra-low quiescent current:  
Flip-Chip4  
DFN6-2x2  
300 nA typ. at no load  
100 μA typ. at 200 mA load  
SOT323-5L  
Controlled Iq in dropout conditions  
Very low-dropout voltage: 160 mV at 200 mA  
Output voltage accuracy: 2% at room temperature, 3% in full temperature range  
Output voltage versions: from 0.8 V to 4.5 V, with 50 mV step and adjustable  
Logic-controlled electronic shutdown  
Output discharge feature (optional)  
Internal overcurrent and thermal protections  
Temperature range: from -40 °C to +125 °C  
Packages: DFN6-2x2, SOT323-5L, Flip-Chip4  
Applications  
Smartphones/tablets  
Image sensors  
Wearable accessories  
Healthcare devices  
Metering  
Maturity status link  
STLQ020  
Description  
The STLQ020 is a 200 mA low-dropout voltage regulator, able to work with an input  
voltage ranging from 2 V to 5.5 V.  
The typical dropout voltage at maximum load is 160 mV.  
The ultra-low quiescent current, which is just 0.3 μA at no load, extends battery-life of  
applications requiring very long standby time.  
Even though the device intrinsic consumption is ultra-low, STLQ020 is able to provide  
fast transient response and good PSRR performance, thanks to its adaptive biasing  
circuit.  
Enable pin puts the STLQ020 in shutdown mode, reducing total current consumption  
to 5 nA.  
The STLQ020 is designed to keep the quiescent current under control and at a low  
value also during dropout operation, helping to extend even more the operating time  
of battery- powered devices.  
It also includes short-circuit constant-current limiting and thermal protection.  
Several small package options are available.  
DS12072 - Rev 3 - June 2019  
For further information contact your local STMicroelectronics sales office.  
www.st.com  
STLQ020  
Block diagram  
1
Block diagram  
Figure 1. Block diagram (fixed version)  
Figure 2. Block diagram (adjustable version)  
VIN  
VOUT  
Bias  
generator  
OPAMP  
EN  
Enable  
Thermal  
protection  
ADJ  
Bandgap  
reference  
*
GND  
Note:  
(*) output discharge function is optional.  
DS12072 - Rev 3  
page 2/31  
 
 
 
STLQ020  
Pin configuration  
2
Pin configuration  
Figure 3. Pin configuration  
Table 1. Pin description  
Symbol  
SOT323-5L  
DFN6-2x2  
Flip-Chip4  
Description  
V
1
5
2
6
1
3
A1  
A2  
B2  
LDO supply voltage  
LDO output voltage  
Ground  
IN  
V
OUT  
GND  
Enable input: set V = high to turn on the device;  
EN  
EN  
3
4
4
2
B1  
-
V
= low to turn off the device. Not internally  
EN  
pulled-up, don’t leave floating.  
Adjustable pin (only on ADJ version). Connect to  
external resistor divider. Not connected on the  
fixed version  
NC/ADJ  
NC  
Not internally connected: it can be connected to  
GND  
-
-
5
-
-
Exposed  
pad  
Exposed pad  
Must be connected to GND  
DS12072 - Rev 3  
page 3/31  
 
 
 
STLQ020  
Typical application diagram  
3
Typical application diagram  
Figure 4. Typical application diagram (fixed version)  
VIN  
VOUT  
VI  
VO  
ON  
STLQ020  
EN  
OFF  
CIn  
COut  
1µF  
1µF  
GND  
AMG270320170900MT  
Figure 5. Typical application diagram (adjustable version)  
VIN  
VOUT  
VI  
VO  
STLQ020  
R1  
R2  
CIn  
COut  
ON  
EN  
ADJ  
OFF  
1µF  
1µF  
GND  
Adjustable version  
AMG270320170901MT  
Note:  
R1 and R2 are calculated according to the following formula: R1 = R2 x (VOUT / VADJ - 1).  
DS12072 - Rev 3  
page 4/31  
 
 
 
STLQ020  
Maximum ratings  
4
Maximum ratings  
Table 2. Absolute maximum ratings  
Parameter  
Symbol  
Value  
Unit  
V
V
Input supply voltage  
Output voltage  
-0.3 to 7  
IN  
V
-0.3 to V + 0.3  
V
OUT  
IN  
V
I
Adjustable pin voltage  
Output current  
-0.3 to 2  
V
ADJ  
Internally limited  
A
OUT  
-0.3 to V + 0.3  
EN  
Enable pin voltage  
V
IN  
P
Power dissipation  
Internally limited  
±500  
W
D
Charged device model  
Human body model  
ESD  
V
±2000  
T
Operating junction temperature  
Maximum junction temperature  
Storage temperature  
-40 to 125  
°C  
°C  
°C  
J-OP  
T
150  
J-MAX  
T
-55 to 150  
STG  
Table 3. Thermal data  
Symbol  
Parameter  
DFN6-2x2  
Flip-Chip4  
SOT323-5L  
Unit  
°C/W  
°C/W  
R
thjc  
Thermal resistance, junction-to-case  
Thermal resistance, junction-to-ambient  
15  
65  
130  
250  
R
thja  
180  
DS12072 - Rev 3  
page 5/31  
 
 
 
STLQ020  
Electrical characteristics  
5
Electrical characteristics  
TJ = 25 °C, VIN = VOUT + 0.5 V or 2 V, whichever is greater; VEN = VIN; CIN = 1 μF; COUT = 1 μF; IOUT = 1 mA.  
Table 4. Electrical characteristics (fixed version)  
Symbol  
Parameter  
Test conditions  
Min.  
2
Typ.  
Max.  
5.5  
2
Unit  
V
Operating input voltage range  
V
IN  
T = 25 °C  
-2  
J
V
Output voltage accuracy  
Static line regulation  
Static load regulation  
%
OUT  
-40 °C < T < 125 °C  
-3  
3
J
V
OUT  
+ 0.5 V < V < 5.5 V (1)  
IN  
0.005  
∆V  
/
/
OUT%  
%/V  
VIN  
-40 °C < T < 125 °C  
0.05  
J
1 mA < I  
< 0.2 A; T = 25 °C  
J
0.0015  
OUT  
∆V  
OUT%  
%/mA  
IOUT  
-40 °C < T < 125 °C  
0.005  
J
V
OUT  
V
OUT  
= 2.5 V; I  
= 2.5 V; I  
= 0.2 A  
160  
15  
mV  
mV  
OUT  
OUT  
Dropout voltage(2)  
V
DROP  
= 20 mA  
µV  
/
RMS  
eN  
Output noise voltage  
f = 10 Hz to 100 kHz  
= 2.5 V; V  
135  
52  
V
OUT  
V
= 0.2 Vpp  
RIPPLE  
OUT  
I
= 10 mA; f = 100 Hz  
OUT  
V
OUT  
= 2.5 V; V  
= 0.2 Vpp  
RIPPLE  
SVR  
Supply voltage rejection  
35  
dB  
I
= 10 mA ; f = 1 kHz  
OUT  
V
= 2.5 V; V  
= 0.2 Vpp  
OUT  
RIPPLE  
45  
I
I
I
I
I
= 10 mA; f = 10 kHz  
= 0 A  
OUT  
OUT  
OUT  
OUT  
OUT  
300  
nA  
µA  
= 0 A; -40 °C < T < 125 °C  
1000  
J
Quiescent current  
= 0.2 A  
I
100  
q
= 0.2 A; -40 °C < T < 125 °C  
150  
J
V
V
V
= 0 V, V = V  
+ 0.5 V (3)  
OUT  
Shutdown current  
0.005  
380  
0.05  
µA  
mA  
Ω
EN  
IN  
I
= 0 V  
OUT  
Short-circuit current  
SC  
(4)  
= 0 V  
R
Output discharge resistance  
Enable input logic low  
100  
EN  
LOW  
0.4  
V
-40 °C < T < 125 °C  
J
V
EN  
Enable input logic high  
Enable pin input current  
1.2  
I
V
I
= V ; 1.25 < V < 6.0 V  
1
nA  
°C  
EN  
EN  
IN  
IN  
Thermal shutdown(5)  
Hysteresis  
> 1 mA  
160  
20  
OUT  
T
SHDN  
1.  
2. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value.  
3. = V + 0.5 V or 2 V, whichever is greater.  
V
= V  
+ 0.5 V or 2 V, whichever is greater.  
IN  
OUT  
V
IN  
OUT  
4. On specific version only.  
5. The thermal protection is not active when the load current is lower than 1 mA.  
DS12072 - Rev 3  
page 6/31  
 
 
 
 
 
 
 
STLQ020  
Electrical characteristics  
TJ = 25 °C, VIN = 2 V, VEN = VIN; CIN = 1 μF; COUT = 1 μF; IOUT = 1 mA.  
Table 5. Electrical characteristics (adjustable version)  
Symbol  
Parameter  
Test conditions  
Min.  
2
Typ.  
Max.  
5.5  
Unit  
V
V
Operating input voltage range  
IN  
T = 25 °C  
0.784  
-3  
0.8  
0.816  
3
V
J
V
Reference voltage accuracy  
Adjustable pin current  
Static line regulation  
ADJ  
-40 °C < T < 125 °C  
%
J
I
1
nA  
ADJ  
2 V< V < 5.5 V  
0.005  
IN  
∆V  
/∆  
%/V  
ADJ% VIN  
-40 °C < T < 125 °C  
0.05  
J
1 mA < I  
< 0.2 A; T = 25 °C  
J
0.0015  
OUT  
∆V  
/∆I  
Static load regulation  
%/mA  
ADJ% OUT  
-40 °C < T < 125 °C  
0.005  
J
V
OUT  
V
OUT  
= 2.0 V; I  
= 2.0 V; I  
= 0.2 A  
200  
20  
mV  
mV  
OUT  
OUT  
Dropout voltage(1)  
V
DROP  
= 20 mA  
µV  
/
RMS  
eN  
Output noise voltage  
f = 10 Hz to 100 kHz  
= 2.5 V; V  
135  
60  
V
OUT  
V
= 0.2 Vpp  
RIPPLE  
OUT  
I
= 10 mA; f = 100 Hz  
OUT  
V
= 2.5 V; V  
= 10 mA ; f = 1 kHz  
= 0.2 Vpp  
OUT  
RIPPLE  
SVR  
Supply voltage rejection  
40  
dB  
I
OUT  
V
= 2.5 V; V  
= 10 mA; f = 10 kHz  
= 0.2 Vpp  
OUT  
RIPPLE  
60  
I
I
I
I
I
OUT  
OUT  
OUT  
OUT  
OUT  
= 0 A  
300  
nA  
µA  
= 0 A; -40 °C < T < 125 °C  
1000  
J
Quiescent current  
= 0.2 A  
80  
I
q
= 0.2 A; -40 °C < T < 125  
J
150  
°C  
V
= 0 V, V = 2 V  
Shutdown current  
0.005  
380  
0.05  
µA  
mA  
Ω
EN  
IN  
I
V
V
= 0 V  
OUT  
Short-circuit current  
SC  
(2)  
= 0 V  
R
LOW  
Output discharge resistance  
Enable input logic low  
100  
EN  
0.4  
V
-40 °C < T < 125 °C  
J
V
EN  
Enable input logic high  
Enable pin input current  
1.2  
I
V
I
= V ; 1.25 < V < 5.5 V  
1
nA  
°C  
EN  
EN  
IN  
IN  
Thermal shutdown(3)  
Hysteresis  
> 1 mA  
160  
20  
OUT  
T
SHDN  
1. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value.  
2. The thermal protection is not active when the load current is lower than 1 mA.  
3. On specific version only.  
DS12072 - Rev 3  
page 7/31  
 
 
 
 
STLQ020  
Typical characteristics  
6
Typical characteristics  
The following plots are referred to the typical application circuit and, unless otherwise noted, at TA = 25 °C.  
Figure 6. Output voltage vs. temperature  
Figure 7. Output voltage vs. temperature  
VIN = 2 V, VOUT = VADJ, IOUT = 1 mA  
VIN = 2 V, VOUT = VADJ, IOUT = 200 mA  
0.820  
0.815  
0.810  
0.805  
0.800  
0.795  
0.790  
0.785  
0.780  
0.820  
0.815  
0.810  
0.805  
0.800  
0.795  
0.790  
0.785  
0.780  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
Temperature [ºC]  
Temperature [ºC]  
Figure 8. Output voltage vs. temperature  
Figure 9. Output voltage vs. temperature  
VIN = 2.3 V, VOUT = 1.8 V, IOUT = 1 mA  
VIN = 2.3 V, VOUT = 1.8 V, IOUT = 200 mA  
1.850  
1.840  
1.830  
1.820  
1.810  
1.800  
1.790  
1.780  
1.770  
1.760  
1.750  
1.850  
1.840  
1.830  
1.820  
1.810  
1.800  
1.790  
1.780  
1.770  
1.760  
1.750  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
Temperature [ºC]  
Temperature [ºC]  
DS12072 - Rev 3  
page 8/31  
 
 
 
STLQ020  
Typical characteristics  
Figure 10. Line regulation vs. temperature  
Figure 11. Load regulation vs. temperature  
VIN = 2.3 V to 5.5 V, VOUT = V  
IOUT = 1 mA  
VIN = 2.3 V , VOUT = 1.8 V, IOUT = 1 mA to 200 mA  
ADJ,  
0.005  
0.004  
0.003  
0.002  
0.001  
0.000  
-0.001  
-0.002  
-0.003  
-0.004  
-0.005  
0.050  
0.040  
0.030  
0.020  
0.010  
0.000  
-0.010  
-0.020  
-0.030  
-0.040  
-0.050  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
Temperature [ºC]  
Temperature [ºC]  
Figure 12. Short-circuit current vs. temp.  
Figure 13. Quiescent current vs. temperature  
VIN = 2 V, VOUT = GND  
VIN = 2 V, VOUT = VADJ , IOUT = 0 mA  
700  
600  
500  
400  
300  
200  
100  
0
1000  
900  
800  
700  
600  
500  
400  
300  
200  
100  
0
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
Temperature [ºC]  
Temperature [ºC]  
Figure 14. Quiescent current vs. temperature  
Figure 15. Shutdown current vs. temperature  
VIN = 2 V, VOUT = VADJ, IOUT = 200 mA  
VIN = 5.5 V, EN = GND  
160  
0.2  
0.18  
0.16  
0.14  
0.12  
0.1  
140  
120  
100  
80  
0.08  
0.06  
0.04  
0.02  
0
60  
40  
20  
0
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
Temperature [ºC]  
Temperature [ºC]  
DS12072 - Rev 3  
page 9/31  
 
 
 
STLQ020  
Typical characteristics  
Figure 17. Quiescent current vs. load current  
(magnification)  
Figure 16. Quiescent current vs. load current  
VIN = 2 V, VOUT = VADJ, IOUT = 0 to 200 mA  
VIN = 2 V, VOUT = VADJ, IOUT = 0 to 1 mA  
100.0  
90.0  
80.0  
70.0  
60.0  
50.0  
40.0  
30.0  
20.0  
10.0  
0.0  
11.0  
10.0  
9.0  
8.0  
7.0  
6.0  
5.0  
4.0  
3.0  
2.0  
1.0  
0.0  
0
20  
40  
60  
80  
100  
120  
140  
160  
180  
200  
0.000001  
0.00001  
0.0001  
0.001  
0.01  
0.1  
1
IOUT [mA]  
IOUT [mA]  
Figure 18. Quiescent current vs. input voltage  
Figure 19. Output voltage vs. input voltage  
VIN = 0 to 5.5 V, VOUT = 2.5 V, IOUT = 0 mA  
VIN = 0 to 5.5 V, VOUT = 2.5 V, IOUT = 0 mA  
1.8  
4.0  
3.5  
3.0  
2.5  
2.0  
1.5  
1.0  
0.5  
0.0  
1.6  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0.0  
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage [V]  
V
[V]  
IN  
Figure 20. Enable pin current vs. temperature  
Figure 21. Dropout voltage vs. temperature  
VIN = 2 V  
VOUT = 2 V, IOUT = 20 mA  
100  
50  
40  
30  
20  
10  
0
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
Temperature [ºC]  
Temperature [ºC]  
DS12072 - Rev 3  
page 10/31  
 
 
 
 
STLQ020  
Typical characteristics  
Figure 22. Dropout voltage vs. temperature  
Figure 23. Enable threshold vs. temperature  
VOUT = 2 V, IOUT = 200 mA  
1200  
500  
400  
300  
200  
100  
0
1100  
1000  
900  
800  
700  
600  
500  
400  
VEN-ON  
VEN-OFF  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
-60  
-40  
-20  
0
20  
40  
60  
80  
100  
120  
140  
Temperature [ºC]  
Temperature [ºC]  
Figure 25. Line transient (trise = 5 µs)  
Figure 24. PSRR vs. frequency  
IOUT = 10 mA  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
Vout=0.8V  
Vout=1.8V  
10  
100  
1000  
10000  
100000  
f [Hz]  
Figure 26. Line transient (trise = 1 µs)  
Figure 27. Line transient  
DS12072 - Rev 3  
page 11/31  
 
 
 
 
 
STLQ020  
Typical characteristics  
Figure 29. Load transient (trise = 5 µs)  
Figure 28. Load transient  
Figure 30. Load transient (VOUT = 1.8 V)  
Figure 31. Load transient (VOUT = VADJ)  
Figure 33. Startup transient (trise = 10 µs)  
Figure 32. Startup transient  
DS12072 - Rev 3  
page 12/31  
 
 
 
 
 
STLQ020  
Application information  
7
Application information  
7.1  
External capacitors  
The STLQ020 voltage regulator requires external low ESR capacitors to assure the control loop stability. These  
capacitors must be selected to meet the requirements of minimum capacitance and equivalent series resistance  
defined in the following chapters. Input and output capacitors should be located as close as possible to the  
relevant pins.  
Input capacitor  
An input capacitor, with a minimum value of 1 μF, must be located as close as possible to the input pin of the  
device and returned to a clean analog ground. A good quality, low-ESR ceramic capacitor is suggested. It helps to  
ensure stability of the control loop, reduces the effects of inductive sources and improves ripple rejection.  
Capacitance higher than 1 µF can be chosen in case of fast load transients in application.  
Output capacitor  
STLQ020 requires a low-ESR capacitor connected on its output, to keep the control loop stable and reduce the  
risk of ringing and oscillations. The control loop is designed to be stable with any good quality ceramic capacitor  
(such as X5R/X7R types) with a minimum value of 1 µF and equivalent series resistance in the [3 – 500 mΩ]  
range. It is important to highlight that the output capacitor must maintain its capacitance and ESR in the stable  
region over the full operating temperature, load and input voltage ranges, to assure stability. Therefore,  
capacitance and ESR variations must be taken into account in the design phase to ensure the device works in the  
expected stability region. There is no maximum limit to the output capacitance, provided that the above conditions  
are respected.  
7.2  
Output voltage adjustment (adjustable version)  
In the adjustable version, available on the DFN6-2x2 and SOT323-5L packages, the output voltage can be  
adjusted to any voltage, starting from 0.8 V (VADJ) up to the input voltage minus the voltage drop (VDROP) across  
the internal power pass element, by connecting a resistor divider between the ADJ pin and the output, allowing  
the remote voltage sensing.  
The resistor divider should be selected using the following equation:  
Equation 1  
VOUT = VADJ (1 + R1 / R2)  
with VADJ = 0.8 V (typ.) and VOUT < VIN-VDROP(MAX)  
For best accuracy and stability the resistor divider should be designed in order to allow that a current of at least  
500 nA flows across it. The current flowing into the ADJ pin is typically less than 1 nA, therefore causing negligible  
change in final the output voltage.  
7.3  
Enable pin operation  
This is a logic control pin, CMOS level-compatible, which can be used to turn On/Off the regulator.It is active high,  
so when it is pulled down, the device enters the shutdown mode, drastically reducing the current consumption, to  
less just few nA.  
Since it is not internally pulled-up, when the enable feature is not used, this pin must not be left floating. It can be  
tied to VIN to keep the regulator output in ON state all the time.  
To assure reliable operation, the signal source used to drive the EN pin, must be able to swing above and below  
the specified thresholds listed in the electrical characteristics table (VEN).  
7.4  
Power dissipation  
A proper PCB design is recommended, to ensure that the device internal junction temperature is kept below  
125°C, in all the operating condition.  
Depending on the package option, the thermal energy generated by the device flows from the die surface to the  
PCB copper area through the package leads, solder bumps and/or exposed pad.  
DS12072 - Rev 3  
page 13/31  
 
 
 
 
 
STLQ020  
Protection features  
The PCB copper area acts as a heat sink. The footprint copper pads should be as wider as possible to spread  
and dissipate the heat to the surrounding environment. Thermal vias to the inner or backside copper layers  
improve the overall thermal performance of the device.  
The power dissipation of the LDO depends on the input voltage, output voltage and output current, and is given  
by:  
Equation 2  
PD = (VIN -VOUT) IOUT  
The junction temperature of the device is:  
Equation 3  
TJ_MAX = TA + RthJA x PD  
where: TJ_MAX is the maximum junction of the die, 125 °C; TA is the ambient temperature; RthJA is the thermal  
resistance junction-to-ambient.  
With the above equation it is possible to calculate the maximum allowable power dissipation, therefore the  
maximum load current for a certain voltage drop. Appropriate de-rating of the operating condition can be applied  
accordingly.  
7.5  
Protection features  
Current limit  
The STLQ020 embeds a constant-current limit circuit, which acts in case of overload or short-circuit on the output,  
clamping the load current to a safe value (typ. 380 mA).  
Normal operation is restored if the overload disappears, but prolonged operation in current limit may lead to high  
power dissipation inside the LDO and subsequently to thermal shutdown.  
Thermal protection  
An internal thermal feedback loop disables the output voltage if the die temperature reaches approximately  
160 °C. This feature protects the device from excessive temperature that could lead to permanent damage to the  
LDO.  
Once the thermal protection is triggered and the device is shut down, normal operation is automatically recovered  
if the die temperature falls below 140 °C (thermal protection hysteresis of 20 °C typically)  
Important note: to keep the device power consumption below 500 nA in low load/no load condition, the internal  
thermal protection is kept disabled for load current below 1 mA.  
Current and thermal limit protections are designed to protect the LDO from excessive power dissipation and not  
intended to replace a proper thermal and electrical design of the application.  
Continuous operation above the maximum ratings may lead to permanent damage to the device.  
DS12072 - Rev 3  
page 14/31  
 
STLQ020  
Package information  
8
Package information  
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.  
8.1  
SOT323-5L package information  
Figure 34. SOT323-5L package outline  
7091413_G  
DS12072 - Rev 3  
page 15/31  
 
 
 
STLQ020  
SOT323-5L package information  
Table 6. SOT323-5L package mechanical data  
mm  
Dim.  
Min.  
0.80  
0
Typ.  
Max.  
1.10  
0.10  
1
A
A1  
A2  
b
0.80  
0.15  
0.10  
1.80  
1.80  
1.15  
0.90  
0.30  
0.22  
2.20  
2.40  
1.35  
c
D
2
E
2.10  
1.25  
0.65  
1.30  
0.36  
E1  
e
e1  
L
0.26  
0°  
0.46  
8°  
<
Figure 35. SOT323-5L recommended footprint  
DS12072 - Rev 3  
page 16/31  
 
 
 
STLQ020  
SOT323-5L package information  
8.1.1  
SOT323-5L tape and reel information  
Figure 36. SOT323-5L tape outline  
DS12072 - Rev 3  
page 17/31  
 
STLQ020  
SOT323-5L package information  
Figure 37. SOT323-5L reel outline  
DS12072 - Rev 3  
page 18/31  
 
 
STLQ020  
Flip-Chip4 package information  
8.2  
Flip-Chip4 package information  
Figure 38. Flip-Chip4 package outline  
Table 7. Flip-Chip4 mechanical data  
mm  
Dim.  
Min.  
0.51  
0.17  
0.34  
0.23  
0.743  
Typ.  
0.56  
0.20  
0.36  
0.26  
0.773  
0.40  
0.773  
0.40  
0.20  
0.20  
0.187  
0.075  
Max.  
0.61  
0.23  
0.38  
0.29  
0.803  
A
A1  
A2  
b
D
D1  
E
0.743  
0.803  
E1  
SD  
SE  
f
ccc  
DS12072 - Rev 3  
page 19/31  
 
 
STLQ020  
Flip-Chip4 package information  
Figure 39. Flip-Chip4 recommended footprint  
DS12072 - Rev 3  
page 20/31  
 
 
STLQ020  
Flip-Chip4 package information  
8.2.1  
Flip-Chip4 reel information  
Figure 40. Flip-Chip4 reel outline  
DS12072 - Rev 3  
page 21/31  
 
STLQ020  
Flip-Chip4 package information  
Figure 41. Flip-Chip4 tape outline  
DS12072 - Rev 3  
page 22/31  
 
 
STLQ020  
DFN6 2x2 package information  
8.3  
DFN6 2x2 package information  
Figure 42. DFN6 2x2 package outline  
Bottom view  
Side view  
Top view  
DM00205706  
DS12072 - Rev 3  
page 23/31  
 
STLQ020  
DFN6 2x2 package information  
Table 8. DFN6 2x2 package mechanical data  
mm  
Dim.  
Min.  
0.75  
0.00  
0.10  
0.18  
1.90  
1.33  
0.68  
Typ.  
0.85  
0.02  
0.20  
0.23  
2.00  
1.43  
0.78  
0.50  
2.00  
0.35  
6
Max.  
0.95  
0.05  
0.30  
0.28  
2.10  
1.53  
0.88  
A
A1  
A3  
b
D
D2  
E2  
e
E
1.90  
0.25  
2.10  
0.45  
L
N
Figure 43. DFN6 2x2 recommended footprint  
DS12072 - Rev 3  
page 24/31  
 
 
 
STLQ020  
DFN6 2x2 package information  
8.3.1  
DFN6 2x2 tape information  
Figure 44. DFN6 2x2 tape outline  
DS12072 - Rev 3  
page 25/31  
 
STLQ020  
Ordering information  
9
Ordering information  
Table 9. Order codes  
Order code  
STLQ020C18R  
STLQ020C22R  
STLQ020C28R  
STLQ020C33R  
STLQ020J18R  
STLQ020J25R  
STLQ020J30R  
STLQ020J33R  
STLQ020PU19R  
STLQ020PU28R  
STLQ020PUR  
Package  
Output voltage  
1.8 V  
Marking  
QLJ  
QLS  
QM3  
QMB  
LJ  
Packing  
SOT323-5L  
SOT323-5L  
SOT323-5L  
SOT323-5L  
Flip-Chip 4  
Flip-Chip 4  
Flip-Chip 4  
Flip-Chip 4  
DFN6-2x2  
DFN6-2x2  
DFN6-2x2  
Tape and reel  
Tape and reel  
Tape and reel  
Tape and reel  
Tape and reel  
Tape and reel  
Tape and reel  
Tape and reel  
Tape and reel  
Tape and reel  
Tape and reel  
2.2 V  
2.8 V  
3.3 V  
1.8 V  
2.5 V  
LX  
3.0 V  
M7  
3.3 V  
MB  
1.9 V  
QLL  
QM3  
QAD  
2.8 V  
ADJ  
Figure 45. Marking composition (flip-chip)  
A1  
xy  
DS12072 - Rev 3  
page 26/31  
 
 
 
STLQ020  
Revision history  
Table 10. Document revision history  
Date  
Revision  
Changes  
27-Mar-2017  
05-Dec-2017  
1
2
Initial release.  
Added: Section 6 Typical characteristics and Section 7 Application information.  
Added: order codes Table 9. Order codes and reel information Section  
8.1.1 SOT323-5L tape and reel information, Section 8.2.1 Flip-Chip4 reel  
information and Section 8.3.1 DFN6 2x2 tape information.  
07-Jun-2019  
3
DS12072 - Rev 3  
page 27/31  
 
 
STLQ020  
Contents  
Contents  
1
2
3
4
5
6
7
Block diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2  
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3  
Typical application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4  
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5  
Electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6  
Typical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8  
Application information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13  
7.1  
7.2  
7.3  
7.4  
7.5  
External capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13  
Output voltage adjustment (adjustable version) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13  
Enable pin operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13  
Power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13  
Protection features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14  
8
Package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15  
8.1  
8.2  
8.3  
SOT323-5L package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15  
8.1.1  
SOT323-5L tape and reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
Flip-Chip4 package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18  
8.2.1  
Flip-Chip4 reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
DFN6 2x2 package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22  
8.3.1  
DFN6 2x2 reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
9
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26  
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27  
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28  
List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29  
List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30  
DS12072 - Rev 3  
page 28/31  
 
STLQ020  
List of tables  
List of tables  
Table 1.  
Table 2.  
Table 3.  
Table 4.  
Table 5.  
Table 6.  
Table 7.  
Table 8.  
Table 9.  
Pin description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Electrical characteristics (fixed version). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6  
Electrical characteristics (adjustable version). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7  
SOT323-5L package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
Flip-Chip4 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
DFN6 2x2 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
Table 10. Document revision history. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27  
DS12072 - Rev 3  
page 29/31  
 
STLQ020  
List of figures  
List of figures  
Figure 1.  
Figure 2.  
Figure 3.  
Figure 4.  
Figure 5.  
Figure 6.  
Figure 7.  
Figure 8.  
Block diagram (fixed version) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Block diagram (adjustable version) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2  
Pin configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Typical application diagram (fixed version) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Typical application diagram (adjustable version) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Output voltage vs. temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Output voltage vs. temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Output voltage vs. temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Output voltage vs. temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8  
Line regulation vs. temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Load regulation vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Short-circuit current vs. temp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Quiescent current vs. temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Quiescent current vs. temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Shutdown current vs. temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9  
Quiescent current vs. load current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Quiescent current vs. load current (magnification) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Quiescent current vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Output voltage vs. input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Enable pin current vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Dropout voltage vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Dropout voltage vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Enable threshold vs. temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
PSRR vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Line transient (trise = 5 µs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Line transient (trise = 1 µs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Line transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11  
Load transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Load transient (trise = 5 µs). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Load transient (VOUT = 1.8 V). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Load transient (VOUT = VADJ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Startup transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Startup transient (trise = 10 µs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
SOT323-5L package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
SOT323-5L recommended footprint. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16  
SOT323-5L tape outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17  
SOT323-5L reel outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18  
Flip-Chip4 package outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
Flip-Chip4 recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20  
Flip-Chip4 reel outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
Flip-Chip4 tape outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22  
DFN6 2x2 package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23  
DFN6 2x2 recommended footprint. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24  
DFN6 2x2 tape outline. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25  
Marking composition (flip-chip) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26  
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.  
Figure 23.  
Figure 24.  
Figure 25.  
Figure 26.  
Figure 27.  
Figure 28.  
Figure 29.  
Figure 30.  
Figure 31.  
Figure 32.  
Figure 33.  
Figure 34.  
Figure 35.  
Figure 36.  
Figure 37.  
Figure 38.  
Figure 39.  
Figure 40.  
Figure 41.  
Figure 42.  
Figure 43.  
Figure 44.  
Figure 45.  
DS12072 - Rev 3  
page 30/31  
 
STLQ020  
IMPORTANT NOTICE – PLEASE READ CAREFULLY  
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST  
products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST  
products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.  
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of  
Purchasers’ products.  
No license, express or implied, to any intellectual property right is granted by ST herein.  
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.  
ST and the ST logo are trademarks of ST. For additional information about ST trademarks, please refer to www.st.com/trademarks. All other product or service  
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Information in this document supersedes and replaces information previously supplied in any prior versions of this document.  
© 2019 STMicroelectronics – All rights reserved  
DS12072 - Rev 3  
page 31/31  

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