Data Sheet
September 30, 2009
Austin Lynx
TM
12 V SMT Non-isolated Power Modules:
10 – 14Vdc input; 1.2Vdc to 5.5Vdc Output; 10A Output Current
RoHS Compliant
Features
Compliant to RoHS EU Directive 2002/95/EC (-Z
versions)
Compliant to ROHS EU Directive 2002/95/EC with
lead solder exemption (non-Z versions)
Delivers up to 10A of output current
High efficiency – 93% at 3.3V full load (V
IN
= 12.0V)
Small size and low profile:
33.00 mm x 13.46 mm x 8.28 mm
(1.300 in x 0.530 in x 0.326 in)
Low output ripple and noise
High Reliability:
Calculated MTBF = 4.4 M hours at 25 C Full-load
Line Regulation: 0.3% (typical)
Load Regulation: 0.4% (typical)
Temperature Regulation: 0.4% (typical)
Remote On/Off
Remote Sense
Output overcurrent protection (non-latching)
Overtemperature protection
Wide operating temperature range (-40°C to 85°C)
UL*
60950-1Recognized,
CSA
C22.2 No. 60950-1-
03 Certified, and
VDE
‡
0805:2001-12 (EN60950-1)
Licensed
ISO** 9001 and ISO 14001 certified manufacturing
facilities
†
o
Applications
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Servers and storage applications
Networking equipment
Description
Austin Lynx 12V SMT (surface mount technology) power modules are non-isolated DC-DC converters that can
deliver up to 10A of output current with full load efficiency of 93% at 3.3V output. These modules provide a
precisely regulated output voltage ranging from 1.2Vdc to 5.5Vdc over a wide range of input voltage (V
IN
= 10 –
14Vdc). Their open-frame construction and small footprint enable designers to develop cost- and space-efficient
solutions. Standard features include remote On/Off, remote sense, output voltage adjustment, overcurrent and
overtemperature protection.
TM
*
UL
is a registered trademark of Underwriters Laboratories, Inc.
†
‡
CSA
is a registered trademark of Canadian Standards Association.
VDE
is a trademark of Verband Deutscher Elektrotechniker e.V.
** ISO is a registered trademark of the International Organization of Standards
Document No: DS03-079 ver. 1.23
PDF name: austin lynx smt 12v.pdf
Data Sheet
March 14, 2006
Austin Lynx
TM
12 V SMT Non-isolated Power Modules:
10 – 14Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are
absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in
excess of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for
extended periods can adversely affect the device reliability.
Parameter
Input Voltage
Continuous
Operating Ambient Temperature
(see Thermal Considerations section)
Storage Temperature
All
T
stg
-55
125
°C
All
T
A
-40
85
°C
Device
All
Symbol
V
IN
Min
-0.3
Max
15
Unit
Vdc
Electrical Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions.
Parameter
Operating Input Voltage
Maximum Input Current
(V
IN
= V
IN, min
to V
IN, max
, I
O
=I
O, max
V
O,set
= 3.3Vdc)
Input No Load Current
(V
IN
= 12.0Vdc, I
O
= 0, module enabled)
Input Stand-by Current
(V
IN
= 12.0Vdc, module disabled)
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; V
IN, min
to
V
IN, max,
I
O
= I
Omax
; See Test configuration section)
Input Ripple Rejection (120Hz)
All
All
All
It
20
30
2
Device
All
All
V
O,set
= 0.75 Vdc
V
O,set
= 5.0Vdc
All
Symbol
V
IN
I
IN,max
I
IN,No load
I
IN,No load
I
IN,stand-by
Min
10
Typ
12.0
Max
14.0
6.5
Unit
Vdc
Adc
mA
mA
mA
40
100
2.0
0.4
As
mAp-p
dB
2
CAUTION: This power module is not internally fused. An input line fuse must always be used.
This power module can be used in a wide variety of applications, ranging from simple standalone operation to being
part of a complex power architecture. To preserve maximum flexibility, internal fusing is not included, however, to
achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a fast-
acting fuse with a maximum rating of 15 A (see Safety Considerations section). Based on the information provided in
this data sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be
used. Refer to the fuse manufacturer’s data sheet for further information.
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Data Sheet
March 14, 2006
Austin Lynx
TM
12 V SMT Non-isolated Power Modules:
10 – 14 Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current
Electrical Specifications
(continued)
Parameter
Output Voltage Set-point
(V
IN
=
IN, min
, I
O
=I
O, max
, T
A
=25°C)
Output Voltage
(Over all operating input voltage, resistive load,
and temperature conditions until end of life)
Adjustment Range
Selected by an external resistor
Output Regulation
Line (V
IN
=V
IN, min
to V
IN, max
)
Load (I
O
=I
O, min
to I
O, max
)
Temperature (T
ref
=T
A, min
to T
A, max
)
Output Ripple and Noise on nominal output
(V
IN
=V
IN, nom
and I
O
=I
O, min
to I
O, max
Cout = 1μF ceramic//10μFtantalum capacitors)
RMS (5Hz to 20MHz bandwidth)
Peak-to-Peak (5Hz to 20MHz bandwidth)
External Capacitance
ESR
≥
1 mΩ
ESR
≥
10 mΩ
Output Current
Output Current Limit Inception (Hiccup Mode )
Output Short-Circuit Current
(V
O
≤250mV)
( Hiccup Mode )
Efficiency
V
IN
= V
IN, nom
, T
A
=25°C
I
O
=I
O, max ,
V
O
= V
O,set
V
O, set
= 1.2Vdc
V
O,set
= 1.5Vdc
V
O,set
= 1.8Vdc
V
O,set
= 2.5Vdc
V
O,set
= 3.3Vdc
V
O,set
= 5.0Vdc
Switching Frequency
Dynamic Load Response
(dIo/dt=2.5A/μs; V
IN
= V
IN, nom
; T
A
=25°C)
Load Change from Io= 50% to 100% of
Io,max; 1μF ceramic// 10
μF
tantalum
Peak Deviation
Settling Time (Vo<10% peak deviation)
(dIo/dt=2.5A/μs; V
IN
= V
IN, nom
; T
A
=25°C)
Load Change from Io= 100% to 50%of Io,max:
1μF ceramic// 10
μF
tantalum
Peak Deviation
Settling Time (Vo<10% peak deviation)
All
t
s
⎯
25
⎯
μs
All
All
t
s
V
pk
⎯
⎯
25
200
⎯
⎯
μs
mV
All
V
pk
⎯
200
⎯
mV
All
η
η
η
η
η
η
f
sw
⎯
87.5
89.0
90.0
92.0
93.0
95.0
300
⎯
%
%
%
%
%
%
kHz
All
All
All
All
All
C
O, max
C
O, max
I
o
I
O, lim
I
O, s/c
⎯
⎯
0
⎯
⎯
⎯
⎯
⎯
200
3
1000
5000
10
⎯
⎯
μF
μF
Adc
% I
o
Adc
All
All
⎯
⎯
12
30
15
50
mV
rms
mV
pk-pk
All
All
All
⎯
⎯
⎯
0.3
0.4
0.4
% V
O, set
% V
O, set
% V
O, set
All
V
O
-10
10
% V
O, set
All
V
O, set
–2.5%
⎯
+3.5%
% V
O, set
Device
All
Symbol
V
O, set
Min
–2.0
Typ
⎯
Max
+2.0
Unit
% V
O, set
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Data Sheet
March 14, 2006
Austin Lynx
TM
12 V SMT Non-isolated Power Modules:
10 – 14Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current
Electrical Specifications
(continued)
Parameter
Dynamic Load Response
(dIo/dt=2.5A/μs; V V
IN
= V
IN, nom
; T
A
=25°C)
Load Change from Io= 50% to 100% of Io,max;
Co = 2x150
μF
polymer capacitors
Peak Deviation
Settling Time (Vo<10% peak deviation)
(dIo/dt=2.5A/μs; V
IN
= V
IN, nom
; T
A
=25°C)
Load Change from Io= 100% to 50%of Io,max:
Co = 2x150
μF
polymer capacitors
Peak Deviation
Settling Time (Vo<10% peak deviation)
All
All
t
s
V
pk
⎯
⎯
25
100
⎯
⎯
μs
mV
All
V
pk
⎯
100
⎯
mV
Device
Symbol
Min
Typ
Max
Unit
All
t
s
⎯
25
⎯
μs
General Specifications
Parameter
Calculated MTBF (I
O
=I
O, max
, T
A
=25°C)
Weight
⎯
Min
Typ
4,400,000
5.6 (0.2)
⎯
Max
Unit
Hours
g (oz.)
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Data Sheet
March 14, 2006
Austin Lynx
TM
12 V SMT Non-isolated Power Modules:
10 – 14 Vdc input; 1.2Vdc to 5.5Vdc Output; 10A output current
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for additional information.
Parameter
Remote On/Off Signal interface
(V
IN
=V
IN, min
to V
IN, max
; Open collector npn or equivalent
Compatible, Von/off signal referenced to GND
See feature description section)
Logic High (On/Off Voltage pin open - Module ON)
Von/Off
Ion/Off
Logic Low (Von/Off
≤
0.3V – Module Off)
Von/Off
Ion/off
Turn-On Delay and Rise Times
(I
O
=I
O, max ,
V
IN
= V
IN, nom,
T
A
= 25 C, )
Case 1: On/Off input is set to Logic Low (Module
ON) and then input power is applied (delay from
instant at which V
IN
=V
IN, min
until Vo=10% of Vo,set)
Case 2: Input power is applied for at least one second
and then the On/Off input is set to logic Low (delay from
instant at which Von/Off=0.3V until Vo=10% of Vo, set)
Output voltage Rise time (time for Vo to rise from 10%
of V
o,set
to 90% of Vo, set)
Output voltage overshoot – Startup
I
O
= I
O, max
; V
IN
= 3.0 to 5.5Vdc, T
A
= 25 C
Remote Sense Range
Overtemperature Protection
(See Thermal Consideration section)
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
All
All
⎯
⎯
8.2
8.0
⎯
⎯
V
V
All
All
T
ref
―
⎯
―
125
0.5
⎯
V
°C
o
o
Device
Symbol
Min
Typ
Max
Unit
All
All
All
All
V
IH
I
IH
V
IL
I
IL
―
―
―
―
―
―
―
―
14
10
0.3
1
V
μA
V
mA
All
Tdelay
3
msec
All
Tdelay
3
msec
All
Trise
―
4
―
6
1
msec
% V
O, set
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