Data Sheet
November 24, 2010
Pico TLynx
TM
3A: Non-Isolated DC-DC Power Modules
2.4 – 5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A Output Current
Features
Compliant to RoHS EU Directive 2002/95/EC
(Z versions)
Compatible in a Pb-free or SnPb reflow
environment (Z versions)
Wide Input voltage range (2.4Vdc-5.5Vdc)
Output voltage programmable from 0.6Vdc to 3.63
Vdc via external resistor
Tunable Loop to optimize dynamic output
voltage response
Flexible output voltage sequencing EZ-
SEQUENCE – APTH versions
Remote sense
Fixed switching frequency
Output overcurrent protection (non-latching)
Overtemperature protection
Remote On/Off
Ability to sink and source current
Cost efficient open frame design
Small size: 12.2 mm x 12.2 mm x 6.25 mm
(0.48 in x 0.48 in x 0.25 in)
Vin+
VIN
VOUT
SENSE
RTUNE
TM
RoHS Compliant
Applications
EZ-SEQUENCE
TM
Distributed power architectures
Intermediate bus voltage applications
Telecommunications equipment
Servers and storage applications
Networking equipment
Industrial equipment
Vout+
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
†
MODULE
Cin
SEQ
CTUNE
Q1
Co
ON/OFF
GND
TRIM
RTrim
Description
The Pico TLynx 3A power modules are non-isolated dc-dc converters that can deliver up to 3A of output current.
These modules operate over a wide range of input voltage (V
IN
= 2.4Vdc-5.5Vdc) and provide a precisely regulated
output voltage from 0.6Vdc to 3.63Vdc, programmable via an external resistor. Features include remote On/Off,
adjustable output voltage, over current and overtemperature protection, and output voltage sequencing (APTH
TM
versions). A new feature, the Tunable Loop , allows the user to optimize the dynamic response of the converter
to match the load with reduced amount of output capacitance leading to savings on cost and PWB area.
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: DS06-131 ver. 1.12
PDF name: APTH003A0X_ds.pdf
Data Sheet
November 24, 2010
Pico TLynx
TM
3A: Non-isolated DC-DC Power Modules
2.4 – 5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A 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
Sequencing Voltage
Operating Ambient Temperature
(see Thermal Considerations section)
Storage Temperature
All
T
stg
-55
125
°C
APTH
All
V
SEQ
T
A
-0.3
-40
V
iN, Max
85
Vdc
°C
Device
All
Symbol
V
IN
Min
-0.3
Max
6
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
=2.4V to 5.5V, I
O
=I
O, max
)
Input No Load Current
(V
IN
= 5.0Vdc, I
O
= 0, module enabled)
Input Stand-by Current
(V
IN
= 5.0Vdc, module disabled)
Inrush Transient
Input Reflected Ripple Current, peak-to-peak
(5Hz to 20MHz, 1μH source impedance; V
IN
=0 to
5.5V
,
I
O
= I
Omax
; See Test Configurations)
Input Ripple Rejection (120Hz)
All
All
All
It
25
40
2
Device
All
All
V
O,set
= 0.6 Vdc
V
O,set
= 3.3Vdc
All
Symbol
V
IN
I
IN,max
I
IN,No load
I
IN,No load
I
IN,stand-by
Min
2.4
Typ
⎯
Max
5.5
3.5
Unit
Vdc
Adc
mA
mA
mA
26
75
2.1
1
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 an
integrated part of sophisticated 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 5A (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.
LINEAGE
POWER
2
Data Sheet
November 24, 2010
Pico TLynx
TM
3A: Non-isolated DC-DC Power Modules
2.4 – 5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A output current
Electrical Specifications (continued)
Parameter
Output Voltage Set-point (with 0.5% tolerance for
external resistor used to set output voltage)
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 (for V
O
≥
2.5Vdc)
Line (V
IN
=V
IN, min
to V
IN, max
)
Load (I
O
=I
O, min
to I
O, max
)
Output Regulation (for V
O
< 2.5Vdc)
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
)
Remote Sense Range
Output Ripple and Noise on nominal output
(V
IN
=V
IN, nom
and I
O
=I
O, min
to I
O, max
Co = 0.1μF //
10
μF
ceramic capacitors)
Peak-to-Peak (5Hz to 20MHz bandwidth)
RMS
External Capacitance
ESR
≥
1 mΩ
With the Tunable Loop
ESR
≥
0.15 mΩ
ESR
≥
10 mΩ
Output Current
Output Current Limit Inception (Hiccup Mode )
Output Short-Circuit Current
(V
O
≤250mV)
( Hiccup Mode )
Efficiency
V
IN
= 3.3Vdc, T
A
=25°C
I
O
=I
O, max ,
V
O
= V
O,set
V
IN
= 5Vdc
Switching Frequency
Dynamic Load Response
(dIo/dt=10A/μs; V
IN
= 5V; V
out
= 1.5V, T
A
=25°C)
Load Change from Io= 0% to 50% of Io,max;
Co = 0
Peak Deviation
Settling Time (Vo<10% peak deviation)
Load Change from Io= 50% to 0% of Io,max:
Co = 0
Peak Deviation
Settling Time (Vo<10% peak deviation)
All
All
TM
TM
1
TM
Device
All
All
Symbol
V
O, set
V
O, set
Min
-1.5
-3.0
Typ
Max
+1.5
Unit
% V
O, set
% V
O, set
⎯
+3.0
All
V
O
0.6
3.63
Vdc
All
All
All
All
All
All
⎯
⎯
⎯
⎯
⎯
+0.4
10
10
5
0.4
0.5
% V
O, set
mV
mV
mV
% V
O, set
V
All
⎯
20
15
35
25
mV
pk-pk
mV
rms
Without the Tunable Loop
All
All
All
All
All
All
V
O,set
= 0.6Vdc
V
O, set
= 1.2Vdc
V
O,set
= 1.8Vdc
V
O,set
= 2.5Vdc
V
O,set
= 3.3Vdc
All
C
O, max
C
O, max
C
O, max
I
o
I
O, lim
I
O, s/c
η
η
η
η
η
f
sw
0
0
0
0
⎯
⎯
⎯
47
1000
3000
3
200
μF
μF
μF
Adc
% I
o,max
Adc
%
%
%
%
%
0.12
81.2
89.4
91.4
93.9
94.4
⎯
600
⎯
kHz
All
All
V
pk
t
s
90
20
mV
μs
V
pk
t
s
100
20
mV
μs
1
External capacitors may require using the new Tunable Loop feature to ensure that the module is stable as well as
TM
getting the best transient response. See the Tunable Loop section for details.
LINEAGE
POWER
3
Data Sheet
November 24, 2010
Pico TLynx
TM
3A: Non-isolated DC-DC Power Modules
2.4 – 5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A output current
General Specifications
Parameter
Calculated MTBF (I
O
=0.8I
O, max
, T
A
=40°C) Telcordia Issue 2 Method
1 Case 3
Weight
⎯
Min
Typ
16,139,760
1.55 (0.0546)
⎯
Max
Unit
Hours
g (oz.)
Feature Specifications
Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature
conditions. See Feature Descriptions for additional information.
Parameter
On/Off Signal Interface
(V
IN
=V
IN, min
to V
IN, max
; open collector or equivalent,
Signal referenced to GND)
Device is with suffix “4” – Positive Logic (See Ordering
Information)
Logic High (Module ON)
Input High Current
Input High Voltage
Logic Low (Module OFF)
Input Low Current
Input Low Voltage
Device Code with no suffix – Negative Logic (See Ordering
Information)
(On/OFF pin is open collector/drain logic input with
external pull-up resistor; signal referenced to GND)
Logic High (Module OFF)
Input High Current
Input High Voltage
Logic Low (Module ON)
Input low Current
Input Low Voltage
Turn-On Delay and Rise Times
(V
IN
=V
IN, nom
, I
O
=I
O, max ,
V
O
to within ±1% of steady state)
Case 1: On/Off input is enabled and then input power is
applied (delay from instant at which V
IN
= V
IN, min
until V
o
=
10% of V
o, set
)
Case 2: Input power is applied for at least one second and
then the On/Off input is enabled (delay from instant at
which Von/Off is enabled until V
o
= 10% of V
o, set
)
Output voltage Rise time (time for V
o
to rise from
10% of Vo, set to 90% of Vo, set)
Output voltage overshoot (T
A
= 25 C
V
IN
= V
IN, min
to V
IN, max
,I
O
= I
O, min
to I
O, max
)
With or without maximum external capacitance
Over Temperature Protection
(See Thermal Considerations section)
Sequencing Delay time
Delay from V
IN, min
to application of voltage on SEQ
pin
Tracking Accuracy
(Power-Up: 2V/ms)
(Power-Down: 2V/ms)
(V
IN, min
to V
IN, max
; I
O, min
to I
O, max
V
SEQ
< V
o
)
APTH
APTH
APTH
Ts
EQ-delay
V
SEQ
–V
o
V
SEQ
–V
o
10
100
100
msec
mV
mV
All
T
ref
140
°C
o
Device
Symbol
Min
Typ
Max
Units
All
All
All
All
I
IH
V
IH
I
IL
V
IL
1.2
⎯
-0.3
⎯
⎯
⎯
⎯
10
V
IN,max
0.3
0.3
µA
V
mA
V
All
All
All
All
I
IH
V
IH
I
IL
V
IL
―
V
IN
– 0.8
―
-0.2
―
―
―
―
1
V
IN, max
0.2
V
IN
– 1.6
mA
Vdc
mA
Vdc
All
All
Tdelay
Tdelay
―
―
2
2
―
―
msec
msec
All
Trise
―
5
―
3.0
msec
% V
O,
LINEAGE
POWER
4
Data Sheet
November 24, 2010
Pico TLynx
TM
3A: Non-isolated DC-DC Power Modules
2.4 – 5.5Vdc input; 0.6Vdc to 3.63Vdc output; 3A output current
Feature Specifications (cont.)
Parameter
Input Undervoltage Lockout
Turn-on Threshold
Turn-off Threshold
Hysteresis
All
All
All
1.75
0.08
0.2
2.2
Vdc
Vdc
Vdc
Device
Symbol
Min
Typ
Max
Units
LINEAGE
POWER
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