SO
T2
NX1117C; NX1117CE series
Low-dropout linear regulators
Rev. 1 — 18 July 2011
Product data sheet
1. General description
The NX1117C/NX1117CE are two series of low-dropout positive voltage regulators with an
output current capability of 1 A. The two series consist of 18 fixed output voltage versions
and two adjustable output voltage versions. NX1117C series offers an output voltage
accuracy of
1
% and NX1117CE series of
1.25
%.
The regulators feature output current limiting, Safe Operating Area (SOA) control, and
thermal shutdown.
The NX1117C/NX1117CE series are housed in a medium power SOT223 (SC-73)
Surface-Mounted Device (SMD) plastic package.
Table 1.
Product overview
Output voltage accuracy
of
1
%
NX1117CADJZ
NX1117C12Z
NX1117C15Z
NX1117C18Z
NX1117C19Z
NX1117C20Z
NX1117C25Z
NX1117C285Z
NX1117C33Z
NX1117C50Z
Output voltage accuracy
of
1.25
%
NX1117CEADJZ
NX1117CE12Z
NX1117CE15Z
NX1117CE18Z
NX1117CE19Z
NX1117CE20Z
NX1117CE25Z
NX1117CE285Z
NX1117CE33Z
NX1117CE50Z
23
Output voltage V
out
(V)
1.25 adjustable
1.2
1.5
1.8
1.9
2.0
2.5
2.85
3.3
5.0
2. Features and benefits
Maximum output current of 1 A
Wide operation range to 20 V input
Output voltage accuracy of
1
% or
1.25
%
Output current limiting
SOA control
Thermal shutdown
No minimum load requirements for fixed
output voltage versions
Temperature range
40 C
to 125
C
NXP Semiconductors
NX1117C; NX1117CE series
Low-dropout linear regulators
3. Applications
Post regulator for switching DC-to-DC converter
High-efficiency linear regulators
Battery charger
USB devices
Hard drive controllers
Consumer and industrial equipment point of load
4. Ordering information
Table 2.
Ordering information
Package
Name
NX1117C/NX1117CE
series
-
Description
plastic surface-mounted package with increased
heat sink; 4 leads
Version
SOT223
Type number
5. Marking
Table 3.
Marking codes
Marking code
NCADJZ
N7C12Z
N7C15Z
N7C18Z
N7C19Z
N7C20Z
N7C25Z
NC285Z
N7C33Z
N7C50Z
Type number
NX1117CEADJZ
NX1117CE12Z
NX1117CE15Z
NX1117CE18Z
NX1117CE19Z
NX1117CE20Z
NX1117CE25Z
NX1117CE285Z
NX1117CE33Z
NX1117CE50Z
Marking code
7CEADJ
7CE12Z
7CE15Z
7CE18Z
7CE19Z
7CE20Z
7CE25Z
7CE285
7CE33Z
7CE50Z
Type number
NX1117CADJZ
NX1117C12Z
NX1117C15Z
NX1117C18Z
NX1117C19Z
NX1117C20Z
NX1117C25Z
NX1117C285Z
NX1117C33Z
NX1117C50Z
NX1117C_NX1117CE_SER
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 1 — 18 July 2011
2 of 21
NXP Semiconductors
NX1117C; NX1117CE series
Low-dropout linear regulators
6. Functional diagram
V
IN
V
ref
V
OUT
V
IN
V
ref
V
OUT
ADJ
OUTPUT CURRENT LIMITING
SOA CONTROL
THERMAL SHUTDOWN
006aac638
OUTPUT CURRENT LIMITING
SOA CONTROL
THERMAL SHUTDOWN
GND
006aac639
Fig 1.
Adjustable output voltage versions:
functional diagram
Fig 2.
Fixed output voltage versions:
functional diagram
7. Pinning information
Table 4.
Pin
1
2
3
4
Pinning
Symbol
ADJ or GND
V
OUT
V
IN
V
OUT
Description
adjust or ground
output
input
output
1
2
3
[1]
Simplified outline
4
[1]
ADJ for NX1117CADJZ and NX1117CEADJZ; GND for all other devices.
8. Limiting values
Table 5.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
V
in
P
tot
T
j
T
amb
T
stg
[1]
Parameter
input voltage
total power dissipation
junction temperature
ambient temperature
storage temperature
Conditions
[1]
Min
-
-
40
65
Max
20
150
+125
+150
Unit
V
C
C
C
internally limited
j
amb
The maximum package power dissipation is
P
tot
=
----------------------
.
-
R
th
j
–
a
T
–
T
NX1117C_NX1117CE_SER
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 1 — 18 July 2011
3 of 21
NXP Semiconductors
NX1117C; NX1117CE series
Low-dropout linear regulators
2.5
P
tot
(W)
2.0
(1)
006aac644
(2)
1.5
1.0
(3)
0.5
0.0
–75
–25
25
75
125
175
T
amb
(°C)
(1) Ceramic Printed-Circuit Board (PCB), Al
2
O
3
, standard footprint
(2) FR4 PCB, mounting pad for output 6 cm
2
(3) FR4 PCB, standard footprint
Fig 3.
Power derating curves
9. Recommended operating conditions
Table 6.
Recommended operation conditions
T
amb
= 25
C unless otherwise specified.
Symbol
V
in
Parameter
input voltage
Conditions
Min
-
Max
20
Unit
V
10. Thermal characteristics
Table 7.
Symbol
R
th(j-a)
Thermal characteristics
Parameter
thermal resistance from
junction to ambient
Conditions
in free air
[1]
[2]
[3]
Min
-
-
-
-
Typ
-
-
-
-
Max
150
72
45
20
Unit
K/W
K/W
K/W
K/W
R
th(j-sp)
[1]
[2]
[3]
thermal resistance from
junction to solder point
Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint.
Device mounted on an FR4 PCB, single-sided copper, tin-plated, mounting pad for output 6 cm
2
.
Device mounted on a ceramic PCB, Al
2
O
3
, standard footprint.
NX1117C_NX1117CE_SER
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 1 — 18 July 2011
4 of 21
NXP Semiconductors
NX1117C; NX1117CE series
Low-dropout linear regulators
10
3
Z
th(j-a)
(K/W)
10
2
006aac645
duty cycle = 1
0.75
0.33
0.1
0.5
0.2
10
0.02
0.05
0.01
1
10
–1
10
–5
0
10
–4
10
–3
10
–2
10
–1
1
10
10
2
t
p
(s)
10
3
FR4 PCB, standard footprint
Fig 4.
10
3
Z
th(j-a)
(K/W)
10
2
Transient thermal impedance from junction to ambient as a function of pulse duration; typical values
006aac646
duty cycle = 1
0.75
0.33
0.5
0.2
0.1
0.05
0.02
10
1
0.01
0
10
–1
10
–5
10
–4
10
–3
10
–2
10
–1
1
10
10
2
10
3
t
p
(s)
FR4 PCB, mounting pad for output 6 cm
2
Fig 5.
Transient thermal impedance from junction to ambient as a function of pulse duration; typical values
NX1117C_NX1117CE_SER
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 1 — 18 July 2011
5 of 21
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