LDL112
Datasheet
1.2 A low quiescent current LDO with reverse current protection
Features
•
•
•
•
•
•
•
•
Input voltage from 1.6 to 5.5 V
Very low-dropout voltage (300 mV typ. at 1 A load)
Low quiescent current (35 µA typ. at no-load, 1 µA max. in off mode)
Output voltage tolerance: ± 2.0% at 25 °C
1.2 A guaranteed output current
Wide range of output voltages available on request: 0.8 V to 5 V with 50 mV
step and adjustable
Logic-controlled electronic shutdown
Compatible with ceramic capacitor COUT = 1 µF
•
•
•
•
•
Internal current and thermal limit
Available in DFN6 (2x2), DFN6 (3x3) mm, SO8-batwing and PPAK packages
Temperature range: -40 °C to 125 °C
Reverse current protection
Output discharge function (optional)
Applications
Maturity status link
LDL112
•
•
•
•
•
Consumer
Computer
Battery-powered systems
Low voltage point-of-load
USB-powered devices
Description
The LDL112 is a low-dropout linear regulator, which can provide a maximum current
of 1.2 A, with a typical dropout voltage of 300 mV.
It is stabilized with a ceramic capacitor on the output.
The very low drop voltage, low quiescent current and reverse current protection
features make it suitable for low power battery-powered applications.
The enable logic control function puts the LDL112 in shutdown mode allowing a total
current consumption lower than 1 µA.
The device is equipped with current limit and thermal protection.
DS10321 - Rev 3 - February 2019
For further information contact your local STMicroelectronics sales office.
www.st.com
LDL112
Diagram
1
Diagram
Figure 2. Block diagram
VIN
VIN
Thermal
protection
Thermal
protection
Current limit
Bandgap
reference
Reverse
current
protection
800mV
VFB
VFB
OPAMP
PMOS
VOUT
VOUT
*
*
EN
Reverse
current
protection
800mV
OPAMP
PMOS
Current limit
Bandgap
reference
Internal
enable
EN
Enable
GND
Fixed version
Internal
enable
ADJ
Enable
GND
Adjustable version
AM14036V1
Note:
DS10321 - Rev 3
(*) The output discharge function is optional.
page 2/32
LDL112
Pin configuration
2
Pin configuration
Figure 3. Pin connection DFN6 (3x3) and DFN6 (2x2) (top view)
Figure 4. Pin connection PPAK and SO8 (top view)
Table 1. Pin description
DS10321 - Rev 3
Symbol
Function
VIN
LDO input voltage
GND
Common ground
EN
Enable pin logic input: low = shutdown, high = active. Don't leave this pin floating
ADJ
Adjustable pin (on adjustable version)
VOUT
LDO output voltage
Exposed pad
Must be connected to GND
NC
Not connected
page 3/32
LDL112
Typical application
3
Typical application
Figure 5. Typical application circuits
VIN
VI
LDL112
C In
ON
1µF
OFF
VOUT
VO
EN
GND
VIN
VI
R1
C Out
OFF
1µF
C In
1µF
VOUT
VO
ON
EN
LDL112
GND
C Out
1µF
R2
Adjustable version
Fixed version
AM14039V1
DS10321 - Rev 3
page 4/32
LDL112
Maximum ratings
4
Maximum ratings
Table 2. Absolute maximum ratings
Symbol
VIN
DC input voltage
Value
Unit
- 0.3 to 7
V
VOUT
DC output voltage
- 0.3 to VI + 0.3
V
VEN
Enable input voltage
- 0.3 to VI + 0.3
V
VADJ
ADJ pin voltage
2
V
IOUT
Output current
Internally limited
mA
Power dissipation
Internally limited
mW
PD
Note:
Parameter
TSTG
Storage temperature range
- 65 to 150
°C
TOP
Operating junction temperature range
- 40 to 125
°C
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
Parameter
DFN6 (3x3)
DFN6 (2x2)
SO8
PPAK
Unit
RthJA
Thermal resistance
junction-ambient
55
65
55(1)
100
°C/W
RthJC
Thermal resistance
junction-case
10
15
20
8
°C/W
1. Considering 6 cm² of copper board heatsink.
DS10321 - Rev 3
page 5/32
LDL112
Electrical characteristics
5
Electrical characteristics
TJ = 25 °C, VIN = VOUT(NOM) + 0.5 V (for VOUT(NOM) ≤ 1 V, VIN = 2.1 V), CIN = COUT = 1 µF, IOUT = 5 mA, VEN =
VIN, unless otherwise specified.
Table 4. LDL112 electrical characteristics (fixed version)
Symbol
VIN
VOUT
Parameter
Test conditions
Max.
Unit
1.6
5.5
V
-2.0
2.0
%
-3.0
3.0
%
0.05
0.1
%/V
IOUT = 0 mA to 1.2 A, VIN > 2.1 V
15
30
mV
IOUT = 1 A, VOUT = 3.3 V
300
Operating input voltage
IOUT = 5 mA, TJ = 25 °C
VOUT accuracy
IOUT = 5 mA, -40 °C < TJ < 125 °C
ΔVOUT
Static line regulation
ΔVOUT
Static load regulation
VDROP
Min.
Dropout voltage
(1)
(3)
VOUT(NOM) + 0.5 V < VIN ≤ 5.5 V
(2)
IOUT = 1.2 A,VOUT = 3.3 V
350
-40 °C < TJ < 125 °C
eN
Output noise voltage
Typ.
10 Hz to 100 kHz, IOUT = 10 mA
VOUT = 3.3 V
600
mV
135
µVRMS
57
dB
VIN = VOUT(NOM) + 0.5 V +/- VRIPPLE (2)
SVR
Supply voltage rejection
VRIPPLE = 0.2 V frequency = 1 kHz
IOUT = 10 mA
IOUT = 0 mA, -40 °C < TJ 2.1 V
1.4
35
70
250
400
0.1
1
2
VIN = VOUT(NOM) + 0.5 V to 5.5 V,
-40 °C < TJ < 125 °C (2)
V
1.4
VEN = VIN
100
Thermal shutdown
165
Hysteresis
20
Output capacitor
Capacitance (see Section 7 Typical
performance characteristics)
A
0.35
-40 °C < TJ < 125 °C (2)
VIN = VOUT(NOM) + 0.5 V to 5.5 V,
µA
1
nA
°C
10
µF
1. Not applicable for Vout(nom) > 4.5 V.
2. For VOUTNOM lower than or equal to 1 V, VIN = 2.1 V.
3. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value.
DS10321 - Rev 3
page 6/32
LDL112
Electrical characteristics
TJ = 25 °C, VIN = 2.1 V, CIN = COUT = 1 µF, IOUT = 5 mA, VEN = VIN, unless otherwise specified.
Table 5. LDL112 electrical characteristics (adjustable version)
Symbol
VIN
VADJ
Parameter
Test conditions
Min.
Operating input voltage
784
IOUT = 5 mA, -40 °C < TJ < 125 °C
ΔVOUT
Static line regulation
ΔVOUT
Static load regulation
(1)
Dropout voltage (3)
2.1 V ≤ VIN ≤ 5.5 V, IOUT = 1 mA
IOUT = 0 mA to 1.2 A, VIN > 2.1 V
IADJ
Output noise voltage
5.5
V
816
mV
3.0
%
0.05
0.1
%/V
6
20
mV
800
300
IOUT = 1.2 A, VOUT = 3.3 V
350
-40 °C < TJ < 125 °C
eN
Unit
-3.0
(2)
IOUT = 1 A, VOUT = 3.3 V
VDROP
Max.
1.6
IOUT = 5 mA, TJ = 25 °C
VADJ accuracy
Typ.
10 Hz to 100 kHz, IOUT = 10 mA
600
µVRMS
60
Adjust pin current
0.130
mV
1
µA
VIN = VOUTNOM + 0.5 V +/- VRIPPLE
SVR
Supply voltage rejection
VRIPPLE = 0.2 V, freq. = 1 kHz,
IOUT = 10 mA
53
IOUT = 0 mA, -40 °C < TJ < 125 °C
IQ
Quiescent current
IOUT = 1.2 A, 2.1 V < VIN < 5.5 V,
-40 °C < TJ < 125 °C
VIN input current in off mode: VEN = GND
ISC
VEN
IEN
TSHDN
COUT
Short-circuit current
RL = 0, VIN > 2.1 V
Enable input logic low
VIN = 2 V to 5.5 V, -40 °C < TJ < 125 °C (2)
Enable input logic high
VIN = 2 V to 5.5 V, -40 °C < TJ < 125 °C
Enable pin input current
VEN = VIN
1.4
(2)
35
70
240
400
0.1
1
2
0
Hysteresis
20
Capacitance (see Section 7 Typical
performance characteristics)
0.35
100
165
1
µA
A
1.4
Thermal shutdown
Output capacitor
dB
(2)
V
nA
°C
10
µF
1. Not applicable for Vout(nom) > 4.5 V.
2. For VOUT lower than or equal to 1 V, VIN = 2.1 V.
3. Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value.
DS10321 - Rev 3
page 7/32
LDL112
Application information
6
Application information
6.1
Thermal and short-circuit protections
The LDL112 is self-protected from short-circuit condition and overtemperature. When the output load is higher
than the one supported by the device, the output current increases until the limit of typically 2 A is reached, at this
point the current is kept constant even when the load impedance is zero.
Thermal protection acts when the junction temperature reaches 165 °C, therefore the IC shuts down. As soon as
the junction temperature falls again below the thermal hysteresis value the device starts working again.
In order to calculate the maximum power that the device can dissipate, keeping the junction temperature below
the TOP , the following formula is used:
Equation 1
PDMAX= (125 - TAMB)/RTHJA
6.2
Output voltage setting for ADJ version
In the adjustable version, the output voltage can be set from 0.8 V up to the input voltage minus the voltage drop
across the pass transistor (dropout voltage), by connecting a resistor divider between the ADJ pin and the output,
thus allowing remote voltage sensing.
The resistor divider could be selected by the following equation:
Equation 2
VOUT = VADJ (1 + R1 / R2), with VADJ = 0.8 V (typ.)
It is recommended to use resistors with values in the range of 10 kΩ to 50 kΩ. Lower values can also be suitable,
but current consumption increases.
6.3
Reverse current protection
The device avoids the reverse current to flow from output to input during any operating condition (with enable pin
in high or low status).The reverse current protection acts in particular during fast turning on/off operations or when
another power supply (with higher voltage than the input one) is connected to the output port. If a power supply
with lower voltage than the LDO output voltage is connected to VOUT pin, LDO enters the current protection
status, causing high power dissipation.
In the application, the LDL112 reverse current protection acts in the following cases:
1.
Off-state, EN pin is at GND level, VOUT > [VIN + 100 mV]. In this case the device power pass element
(MOSFET) is off, the bulk and gate are switched to VOUT and therefore all possible current paths from VOUT
to VIN are interrupted.
DS10321 - Rev 3
2.
On-state, EN pin is at high level and VOUT > VOUT(nominal) . In this condition, VOUT is higher than the
nominal level, so the device op-amp works in open loop and the power element is off. VGS is zero, the bulk
and gate are switched to VOUT (where VOUT > [VIN + 100 mV]) therefore all possible current paths from
VOUT to VIN are interrupted.
3.
On-state, EN pin is at high level and VOUT< VOUT(nominal) . In this condition VOUT is lower than the
nominal level, so the op-amp works in open loop with the power MOSFET on. VGS is maximal so the power
channel conducts with very low RDS(on). When VOUT > VIN the current can flow from VOUT to VIN until the
condition VOUT > (VIN + 100 mV) is reached.
page 8/32
LDL112
Typical performance characteristics
7
Typical performance characteristics
(CIN = COUT = 1 µF, VEN to VIN, T = 25 °C unless otherwise specified)
Figure 9. Output voltage vs. temperature
(VOUT = 3.3 V, IOUT = 1.2 A)
3.6
3.6
3.5
3.5
Output Voltage [V]
Output Voltage [V]
Figure 8. Output voltage vs. temperature
(VOUT = 3.3 V, IOUT = 5 mA)
3.4
3.3
3.2
3.4
3.3
3.2
3.1
3.1
3
3
-60
-40
-20
0
20
40
60
80
100
120
-60
140
-40
-20
0
AM14040V1
VIN=3.8V, IOUT=5mA, VOUT=3.3V
60
80
100
120
140
AM14041V1
Figure 11. Output voltage vs. temperature
(VOUT = VADJ, IOUT = 1.2 A)
0.9
0.9
0.88
0.88
0.86
0.86
Output Voltage [V]
Output Voltage [V]
40
VIN=3.8V, IOUT=1.2A, VOUT=3.3V
Figure 10. Output voltage vs. temperature
(VOUT = VADJ, IOUT = 5 mA)
0.84
0.82
0.8
0.78
0.76
0.84
0.82
0.8
0.78
0.76
0.74
0.74
0.72
0.72
0.7
0.7
-60
-40
-20
0
20
40
60
80
100
120
140
Temperature [°C]
VIN=1.6V, IOUT=5mA, VOUT=VADJ
DS10321 - Rev 3
20
Temperature [°C]
Temperature [°C]
-60
-40
-20
0
20
40
60
80
100
120
140
Temperature [°C]
AM14042V1
VIN=2V, IOUT=1.2A, VOUT=VADJ
AM14043V1
page 9/32
LDL112
Typical performance characteristics
Figure 12. Line regulation vs. temperature
Figure 13. Load regulation vs. temperature
40
0.2
0.18
35
Load regulation [mV]
Line regulation [%/V]
0.16
0.14
0.12
0.1
0.08
0.06
30
25
20
15
10
0.04
5
0.02
0
0
-60
-40
-20
0
20
40
60
80
100
120
-60
140
-40
-20
0
VIN=3.8V to 5.5V, IOUT=1.2A, VOUT=3.3V
AM14044V1
500
90
450
80
400
Quiescent current [µA]
Quiescent current [µA]
60
80
100
120
140
60
50
40
30
AM14045V1
Figure 15. Quiescent current vs. temperature
(IOUT = 1.2 A)
100
70
350
300
250
200
150
20
100
10
50
0
0
-60
-40
-20
0
20
40
60
80
100
120
-60
140
-40
-20
0
20
40
60
80
100
120
140
Temperature [°C]
Temperature [°C]
AM14046V1
VIN=3.8V, IOUT= 0mA, VOUT=3.3V
AM14047V1
VIN=3.8V, IOUT= 1.2A, VOUT=3.3V
Figure 16. Shutdown current vs. temperature
Figure 17. Quiescent current vs. load current
2.5
300
250
2
Quiescent current [µA]
Quiescent current [µA]
40
VIN=3.8V, IOUT=from 0mA to 1.2A , VOUT=3.3V
Figure 14. Quiescent current vs. temperature
(IOUT = 0 mA)
1.5
1
0.5
200
150
100
50
0
0
-60
-40
-20
0
20
40
60
80
100
120
140
Temperature [°C]
VIN=2V, VEN= GND, VOUT=VADJ
DS10321 - Rev 3
20
Temperature [°C]
Temperature [°C]
0
200
400
600
800
1000
1200
Load current [mA]
AM14048V1
VIN=2V, VOUT=VADJ , T=25°C
AM14049V1
page 10/32
LDL112
Typical performance characteristics
Figure 19. Dropout voltage vs. temperature
(IOUT = 1.2 A)
400
700
350
600
Dropout voltage [mV]
Dropout voltage [mV]
Figure 18. Dropout voltage vs. temperature
(IOUT = 600 mA)
300
250
200
150
100
500
400
300
200
100
50
0
0
-60
-40
-20
0
20
40
60
80
100
120
-60
140
-40
-20
0
AM14050V1
IOUT= 0.6A, VOUT=3.3V
Figure 20. Dropout voltage vs. load current
40
60
80
100
120
140
AM14051V1
IOUT= 1.2A, VOUT=3.3V
Figure 21. Short-circuit current vs. input voltage
3
400
350
2.5
Short circuit current [A]
Dropout Voltage [mV]
20
Temperature [°C]
Temperature [°C]
300
250
200
150
100
2
1.5
1
0.5
50
0
0
10
210
410
610
810
0
1010
1
2
Load current [mA]
3
4
5
6
Input voltage [V]
T=25°C
AM14053V1
VOUT=3.3V, T=25°C
AM14052V1
Figure 22. Enable thresholds vs. temperature
Figure 23. SVR vs. frequency
1.8
70
Vout=3.3V
Low
60
50
1.2
1
0.8
40
30
20
0.6
10
0.4
0
0.2
-60
-40
-20
0
20
40
60
80
100
120
140
VIN=3.8V
100
1000
10000
100000
1000000
Frequency [Hz]
Temperature [°C]
DS10321 - Rev 3
Vout=Vadj
Hi
1.4
SVR [dB]
Enable voltage [V]
1.6
AM14054V1
VIN=1.6V or 3.8V +/- 200mV, IOUT=10mA, C OUT =1µF
AM14055V1
page 11/32
LDL112
Typical performance characteristics
Figure 25. Stability plan vs. Cout, ESR
Figure 24. Output noise spectral density
3
7
2.5
6
Vout=3.3V
ESR @ 100 KHz[Ω]
Output Noise Density [mV/sqrt(Hz)]
8
Vout=Vadj
5
4
3
2
1.5
STABILITY AREA
1
2
0.5
1
0
0.01
0.1
1
Frequency: f [kHz]
10
100
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
COUT [µF] (nominal value)
VIN = 1.6V or 3.8V, CIN = COUT =1µF
AM14057V1
VIN from 2 to 5.5V, IOUT from 0 to 1.2A, CIN=1µF
AM14057V2
Figure 27. Load transient
Figure 26. Line transient
VEN
IOUT
VOUT
VOUT
VIN=from 3.5V to 5.5V, VEN=2V, IOUT=10mA, VOUT=3.3V, COUT=1µF, t r=tf=1µs
VIN=VEN=4V, IOUT=from 5mA to 1.2A, VOUT=3.3V, tr=tf=5µs
AM14059V1
AM14058V1
Figure 28. Enable transient
Figure 29. Turn-on time
VEN
VEN
IOUT
VOUT
VOUT
VIN=4V, VEN=0V to 2V, IOUT=1.2A, VOUT=3.3V, tr=tf=1µs
AM14060V1
DS10321 - Rev 3
VIN=VEN= from 0V to 5.5V, IOUT=5mA, VOUT=3.3V, tr=tf=5µs
AM14061V1
page 12/32
LDL112
Package mechanical data
8
Package mechanical data
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
DFN6 (3x3) package information
Figure 30. DFN6 (3x3) package outline
7946637_C
DS10321 - Rev 3
page 13/32
LDL112
DFN6 (3x3) package information
Table 6. DFN6 (3x3) mechanical data
Dim.
mm
Min.
A
0.80
A1
0
A3
Max.
1
0.02
0.05
0.20
b
0.23
D
2.90
D2
2.23
E
2.90
E2
1.50
e
L
Typ.
0.45
3
3.10
2.50
3
3.10
1.75
0.95
0.30
0.40
0.50
Figure 31. DFN6 (3x3) recommended footprint
7946637_C
DS10321 - Rev 3
page 14/32
LDL112
DFN6 (3x3) packing information
8.2
DFN6 (3x3) packing information
Figure 32. DFN6 (3x3) tape outline
7875978_ N
DS10321 - Rev 3
page 15/32
LDL112
DFN6 (3x3) packing information
Figure 33. DFN6 (3x3) reel outline
7875978_N
Table 7. DFN6 (3x3) tape and reel mechanical data
Dim.
DS10321 - Rev 3
mm
Min.
Typ.
Max.
A0
3.20
3.30
3.40
B0
3.20
3.30
3.40
K0
1
1.10
1.20
page 16/32
LDL112
DFN6 (2x2) package information
8.3
DFN6 (2x2) package information
Figure 34. DFN6 (2x2) package outline
7733060
DS10321 - Rev 3
page 17/32
LDL112
DFN6 (2x2) package information
Table 8. DFN6 (2x2) mechanical data
Dim.
mm
Min.
Typ.
Max.
A
0.70
0.75
0.80
A1
0.00
0.02
0.05
A3
-
0.203 ref
-
b
0.25
0.30
0.35
D
-
2.00
-
E
-
2.00
-
e
-
0.50
-
D2
0.77
0.92
1.02
E2
1.30
1.45
1.55
K
0.15
-
-
L
0.20
0.30
0.40
aaa
-
0.05
-
bbb
-
0.10
-
ccc
-
0.10
-
ddd
-
0.05
-
eee
-
0.08
-
Figure 35. DFN6 (2x2) recommended footprint
7733060 revE
DS10321 - Rev 3
page 18/32
LDL112
DFN6 (2x2) packing information
8.4
DFN6 (2x2) packing information
Figure 36. DFN6 (2 x 2 mm) reel outline
Table 9. DFN6 (2 x 2 mm) tape and reel mechanical data
Dim.
mm
Min.
Typ.
A
180
C
12.8
D
20.2
N
60
13.2
T
DS10321 - Rev 3
Max.
14.4
A0
2.4
B0
2.4
K0
1.3
P0
4
P
4
page 19/32
LDL112
SO8 package information
8.5
SO8 package information
Figure 37. SO-8 batwing package outline
0016023_G
Table 10. SO-8 batwing mechanical data
Dim.
mm
Min.
Typ.
A
1.75
A1
0.10
A2
1.25
b
0.31
0.51
b1
0.28
0.48
c
0.10
0.25
c1
0.10
0.23
D
4.80
4.90
5.00
E
5.80
6.00
6.20
E1
3.80
3.90
4.00
e
0.25
1.27
h
0.25
0.50
L
0.40
1.27
L1
1.04
L2
0.25
k
ccc
DS10321 - Rev 3
Max.
0°
8°
0.10
page 20/32
LDL112
SO8 package information
Figure 38. SO-8 batwing recommended footprint
0016023_GU
DS10321 - Rev 3
page 21/32
LDL112
SO8-batwing packing information
8.6
SO8-batwing packing information
Figure 39. SO8-batwing tape and reel outline
Table 11. SO8-batwing mechanical data
Dim.
mm
Min.
A
Max.
330
C
12.8
D
20.2
N
60
T
DS10321 - Rev 3
Typ.
13.2
22.4
A0
8.1
8.5
B0
5.5
5.9
K0
2.1
2.3
P0
3.9
4.1
P
7.9
8.1
page 22/32
LDL112
PPAK package information
8.7
PPAK package information
Figure 40. PPAK package outline
0078180_F
DS10321 - Rev 3
page 23/32
LDL112
PPAK package information
Table 12. PPAK mechanical data
Dim.
mm
Min.
Max.
A
2.2
2.4
A1
0.9
1.1
A2
0.03
0.23
B
0.4
0.6
B2
5.2
5.4
C
0.45
0.6
C2
0.48
0.6
D
6
6.2
D1
E
5.1
6.4
6.6
E1
4.7
e
1.27
G
4.9
5.25
G1
2.38
2.7
H
9.35
10.1
L2
0.8
L4
0.6
L5
1
2.8
R
0.20
0°
1
1
L6
V2
DS10321 - Rev 3
Typ.
8°
page 24/32
LDL112
PPAK packing information
8.8
PPAK packing information
Figure 41. PPAK tape outline
10 pitches cumul ative
tolerance on tape +/- 0.2 mm
T
P0
Top cover
tape
P2
D
E
F
B1
K0
For machine ref. only
including d raft and
radii con centric around B0
W
B0
A0
P1
D1
User direction of feed
R
Bending radius
User direction of feed
AM08852v1
DS10321 - Rev 3
page 25/32
LDL112
PPAK packing information
Figure 42. PPAK reel outline
Table 13. PPAK mechanical data
Tape
Dim.
mm
mm
Dim.
Min.
Max.
A0
6.8
7
A
B0
10.4
10.6
B
1.5
12.1
C
12.8
1.6
D
20.2
G
16.4
50
B1
DS10321 - Rev 3
Reel
Min.
Max.
330
13.2
D
1.5
D1
1.5
E
1.65
1.85
N
F
7.4
7.6
T
K0
2.55
2.75
P0
3.9
4.1
Base qty.
2500
P1
7.9
8.1
Base qty.
2500
P2
1.9
2.1
R
40
T
0.25
0.35
W
15.7
16.3
18.4
22.4
page 26/32
LDL112
Ordering information
9
Ordering information
Table 14. Order codes
DFN6 (3x3)
DFN6 (2x2)
SO8-batwing
PPAK
LDL112PV10R
LDL112PU10R
LDL112D10R
1.0
LDL112PV12R
LDL112PU12R
LDL112D12R
1.2
LDL112PV15R
LDL112PV18R
1.5
LDL112PU18R
LDL112D18R
1.8
LDL112PU30R
DS10321 - Rev 3
Output voltage (V)
3.0
LDL112PV33R
LDL112PU33R
LDL112D33R
LDL112PVR
LDL112PUR
LDL112DR
3.3
LDL112PT-TR
Adj
page 27/32
LDL112
Revision history
Table 15. Document revision history
Date
Revision
Changes
21-Nov-2014
1
Initial release.
28-Oct-2016
2
Updated Figure 32. DFN6 (2x2) package outline. Modified Table 9. Order
codes.
Minor text changes.
20-Feb-2019
DS10321 - Rev 3
3
Updated Table 14. Order codes.
page 28/32
LDL112
Contents
Contents
1
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
3
Typical application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
5
Electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
6
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.1
Thermal and short-circuit protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.2
Output voltage setting for ADJ version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.3
Reverse current protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7
Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8
Package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
9
8.1
DFN6 (3x3) package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8.2
DFN6 (3x3) packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8.3
DFN6 (2x2) package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8.4
DFN6 (2x2) packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8.5
SO8-batwing package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.6
SO8-batwing packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.7
PPAK package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.8
PPAK packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
List of tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
List of figures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
DS10321 - Rev 3
page 29/32
LDL112
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Pin description. . . . . . . . . . . . . . . . . . . . . . . . . . .
Absolute maximum ratings . . . . . . . . . . . . . . . . . .
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . .
LDL112 electrical characteristics (fixed version) . . . .
LDL112 electrical characteristics (adjustable version)
DFN6 (3x3) mechanical data . . . . . . . . . . . . . . . . .
DFN6 (3x3) tape and reel mechanical data . . . . . . .
DFN6 (2x2) mechanical data . . . . . . . . . . . . . . . . .
DFN6 (2 x 2 mm) tape and reel mechanical data . . .
SO-8 batwing mechanical data . . . . . . . . . . . . . . .
SO8-batwing mechanical data . . . . . . . . . . . . . . . .
PPAK mechanical data . . . . . . . . . . . . . . . . . . . . .
PPAK mechanical data . . . . . . . . . . . . . . . . . . . . .
Order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Document revision history . . . . . . . . . . . . . . . . . . .
DS10321 - Rev 3
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. 3
. 5
. 5
. 6
. 7
14
16
18
19
20
22
24
26
27
28
page 30/32
LDL112
List of figures
List of figures
Figure 2.
Figure 3.
Figure 4.
Figure 5.
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.
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.
DS10321 - Rev 3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin connection DFN6 (3x3) and DFN6 (2x2) (top view) . . . .
Pin connection PPAK and SO8 (top view) . . . . . . . . . . . . .
Typical application circuits . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage vs. temperature (VOUT = 3.3 V, IOUT = 5 mA).
Output voltage vs. temperature (VOUT = 3.3 V, IOUT = 1.2 A).
Output voltage vs. temperature (VOUT = VADJ, IOUT = 5 mA) .
Output voltage vs. temperature (VOUT = VADJ, IOUT = 1.2 A) .
Line regulation vs. temperature. . . . . . . . . . . . . . . . . . . . .
Load regulation vs. temperature . . . . . . . . . . . . . . . . . . . .
Quiescent current vs. temperature (IOUT = 0 mA) . . . . . . . .
Quiescent current vs. temperature (IOUT = 1.2 A) . . . . . . . .
Shutdown current vs. temperature. . . . . . . . . . . . . . . . . . .
Quiescent current vs. load current . . . . . . . . . . . . . . . . . . .
Dropout voltage vs. temperature (IOUT = 600 mA) . . . . . . . .
Dropout voltage vs. temperature (IOUT = 1.2 A) . . . . . . . . . .
Dropout voltage vs. load current . . . . . . . . . . . . . . . . . . . .
Short-circuit current vs. input voltage . . . . . . . . . . . . . . . . .
Enable thresholds vs. temperature . . . . . . . . . . . . . . . . . .
SVR vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output noise spectral density . . . . . . . . . . . . . . . . . . . . . .
Stability plan vs. Cout, ESR. . . . . . . . . . . . . . . . . . . . . . . .
Line transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Load transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Enable transient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turn-on time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DFN6 (3x3) package outline . . . . . . . . . . . . . . . . . . . . . . .
DFN6 (3x3) recommended footprint. . . . . . . . . . . . . . . . . .
DFN6 (3x3) tape outline. . . . . . . . . . . . . . . . . . . . . . . . . .
DFN6 (3x3) reel outline . . . . . . . . . . . . . . . . . . . . . . . . . .
DFN6 (2x2) package outline . . . . . . . . . . . . . . . . . . . . . . .
DFN6 (2x2) recommended footprint. . . . . . . . . . . . . . . . . .
DFN6 (2 x 2 mm) reel outline . . . . . . . . . . . . . . . . . . . . . .
SO-8 batwing package outline . . . . . . . . . . . . . . . . . . . . .
SO-8 batwing recommended footprint . . . . . . . . . . . . . . . .
SO8-batwing tape and reel outline . . . . . . . . . . . . . . . . . .
PPAK package outline . . . . . . . . . . . . . . . . . . . . . . . . . . .
PPAK tape outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PPAK reel outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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page 31/32
LDL112
IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST
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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. All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2019 STMicroelectronics – All rights reserved
DS10321 - Rev 3
page 32/32