LD6815 series
Low-dropout regulators, high PSRR, 150 mA
Rev. 3 — 17 October 2013
Product data sheet
1. Product profile
1.1 General description
The LD6815 series is a small-size Low-DropOut (LDO) regulator family with a high-Power
Supply Rejection Ratio (PSRR) of 75 dB. The typical voltage drop is 250 mV at 150 mA
current rating. Operating voltages range from 2.3 V to 5.5 V. The devices are available
with fixed nominal output voltages V
O(nom)
between 1.2 V and 3.6 V.
The LD6815 series devices are available in SOT753 (TSOP5) plastic package with a size
of 2.9 mm
1.5 mm
1.0 mm. All devices are manufactured in monolithic silicon
technology.
1.2 Features and benefits
Overcurrent protection
Auto discharge or high-ohmic mode for the output state when disabled
Low quiescent current (0.1
A)
in shutdown mode
High-level ElectroStatic Discharge (ESD) protection [6 kV Human Body Model (HBM)]
Industry standard SOT753 (TSOP5) package
Pb-free, Restriction of Hazardous Substances (RoHS) compliant, free of halogen and
antimony (Dark Green compliant)
1.3 Applications
Smartphones
Mobile handsets
Digital still cameras
Tablet PCs
Mobile internet devices
Portable media players
1.4 Quick reference data
I
OUT
= 150 mA (max)
PSRR = 75 dB at 1 kHz
RMS noise V
n(o)(RMS)
= 40
V
at 10 Hz to 100 kHz
t
startup(reg)
= 150
s
V
IN
= 2.3 V to 5.5 V
V
OUT
= 1.2 V to 3.6 V
Dropout voltage V
do
= 250 mV
at I
OUT
= 150 mA
NXP Semiconductors
LD6815 series
Low-dropout regulators, high PSRR, 150 mA
2. Pinning information
2.1 Pinning
5
4
1
2
3
Fig 1.
Pin configuration
2.2 Pin description
Table 1.
Symbol
IN
GND
EN
n.c.
OUT
Pin description
Pin
1
2
3
4
5
Description
regulator input voltage
supply ground
device enable input; active HIGH
not connected
regulator output voltage
3. Ordering information
Table 2.
Ordering information
Package
Name
LD6815TD
TSOP5
Description
plastic surface-mounted package; 5 leads
Version
SOT753
Type number
Further ordering options see
Section 3.1 “Ordering options”.
3.1 Ordering options
Further information on output voltage is available on request; see
Section 20 “Contact
information”.
An explanation of high-ohmic and pull-down type is in
Section 4 “Block
diagram”.
Table 3.
Type number extension of high-ohmic output
Nominal output
voltage V
O(nom)
1.2 V
1.5 V
1.8 V
2.1 V
2.5 V
Type number
LD6815TD/28H
LD6815TD/29H
LD6815TD/30H
LD6815TD/33H
LD6815TD/36H
Nominal output
voltage V
O(nom)
2.8 V
2.9 V
3.0 V
3.3 V
3.6 V
Type number
LD6815TD/12H
LD6815TD/15H
LD6815TD/18H
LD6815TD/21H
LD6815TD/25H
LD6815_SER
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 3 — 17 October 2013
2 of 20
NXP Semiconductors
LD6815 series
Low-dropout regulators, high PSRR, 150 mA
Type number extension of pull-down output
Nominal output
voltage V
O(nom)
1.2 V
1.5 V
1.8 V
2.1 V
2.5 V
Type number
LD6815TD/28P
LD6815TD/29P
LD6815TD/30P
LD6815TD/33P
LD6815TD/36P
Nominal output
voltage V
O(nom)
2.8 V
2.9 V
3.0 V
3.3 V
3.6 V
Table 4.
Type number
LD6815TD/12P
LD6815TD/15P
LD6815TD/18P
LD6815TD/21P
LD6815TD/25P
4. Block diagram
Fig 2.
Block diagram of LD6815TD/xxP (auto discharge function)
Fig 3.
LD6815_SER
Block diagram of LD6815TD/xxH
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 3 — 17 October 2013
3 of 20
NXP Semiconductors
LD6815 series
Low-dropout regulators, high PSRR, 150 mA
5. Limiting values
Table 5.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to
GND (ground = 0 V).
Symbol
V
IN
V
EN
V
OUT
P
tot
T
stg
T
j
T
amb
V
ESD
Parameter
voltage on pin IN
voltage on pin EN
voltage on pin OUT
total power dissipation
storage temperature
junction temperature
ambient temperature
electrostatic discharge
voltage
human body model
machine model
[2]
[3]
Conditions
4 ms transient
4 ms transient
4 ms transient
[1]
Min
0.5
0.5
0.5
-
55
40
40
-
-
Max
+6.0
+6.0
+6.0
800
+150
+125
+85
6
400
Unit
V
V
V
mW
C
C
C
kV
V
[1]
The (absolute) maximum power dissipation depends on the junction temperature T
j
. Higher power
dissipation is allowed with lower ambient temperatures. The conditions to determine the specified values
are T
amb
= 25
C
and the use of a two-layer Printed-Circuit Board (PCB).
According to JESD22-A114 and IEC 61340-3-1.
According to JESD22-A115.
[2]
[3]
6. Recommended operating conditions
Table 6.
Operating conditions
Voltages are referenced to GND (ground = 0 V).
Symbol
T
amb
T
j
Pin IN
V
IN
Pin EN
V
EN
Pin OUT
V
OUT
C
L(ext)
[1]
Parameter
ambient temperature
junction temperature
voltage on pin IN
voltage on pin EN
voltage on pin OUT
external load capacitance
Conditions
Min
40
-
2.3
0
0.5
[1]
Typ
-
-
-
-
-
1.0
Max
+85
125
5.5
V
IN
V
IN
+ 0.3
-
Unit
C
C
V
V
V
F
0.7
See
Section 10.1 “Capacitor values”.
LD6815_SER
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 3 — 17 October 2013
4 of 20
NXP Semiconductors
LD6815 series
Low-dropout regulators, high PSRR, 150 mA
7. Thermal characteristics
Table 7.
Symbol
R
th(j-a)
[1]
Thermal characteristics
Parameter
thermal resistance from junction to ambient
Conditions
[1][2]
Typ
125
Unit
K/W
The overall R
th(j-a)
can vary depending on the board layout. To minimize the effective R
th(j-a)
, all pins must have a solid connection to
larger Cu layer areas for example to the power and ground layer. In multilayer PCB applications, the second layer is used to create a
large heat spreader area directly below the LDO. If this layer is either ground or power, it is connected with several vias to the top layer
connecting to the device ground or supply. Avoid the use of solder-stop varnish under the chip.
Use the measurement data given for a rough estimation of the R
th(j-a)
in your application. The actual R
th(j-a)
value can vary in applications
using different layer stacks and layouts.
[2]
8. Characteristics
Table 8.
Electrical characteristics
At recommended input voltages and T
amb
=
40
C to +85
C; voltages are referenced to GND (ground = 0 V);
unless otherwise specified.
Symbol
Output voltage
V
do
V
O
dropout voltage
output voltage variation
I
OUT
= 150 mA; V
IN
< V
O(nom)
V
OUT
< 1.8 V; I
OUT
= 1 mA
T
amb
= +25
C
40 C
T
amb
+85
C
V
OUT
1.8 V; I
OUT
= 1 mA
T
amb
= +25
C
40 C
T
amb
+85
C
Line regulation error
V
O
/(V
O
V
I
)
relative output voltage
variation with input voltage
relative output voltage
variation with output current
current on pin OUT
peak output current
V
IN
= (V
O(nom)
+ 0.5 V) to 5.5 V
V
O(nom)
1.8 V; V
OUT
= 0.95
V
O(nom)
V
O(nom)
< 1.8 V; V
OUT
= 0.9
V
O(nom)
I
sc
I
q
short-circuit current
quiescent current
pin OUT
V
EN
= 1.1 V; I
OUT
= 0 mA
V
EN
= 1.1 V; I
OUT
= 150 mA;
V
IN
= V
O(nom)
+ 0.5 V
V
EN
0.4 V
[2]
[2]
[2]
[2]
[2]
[1]
Parameter
Conditions
Min
-
3
4
2
3
0.1
Typ
250
0.5
-
0.5
-
-
Max
-
+3
+4
+2
+3
+0.1
Unit
mV
%
%
%
%
%/V
V
IN
= (V
O(nom)
+ 0.5 V) to 5.5 V
[2]
Load regulation error
V
O
/(V
O
I
O
)
Output current
I
OUT
I
OM
-
200
200
-
-
-
-
-
-
-
300
35
150
0.1
150
-
-
-
-
-
1
mA
mA
mA
mA
A
A
A
1 mA
I
OUT
150 mA
[2]
-
0.005 0.02
%/mA
Regulator quiescent current
LD6815_SER
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 3 — 17 October 2013
5 of 20
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