PMA 4000 Series
DC/DC regulators
Input 3.0 - 3.6V
Output Current 12A
Key Features
• Surface mountable
• Low profile, max 8.5mm (0.33 in)
• High efficiency
• Low weight
• Designed for Environment, DfE
• Lead-free / Bromine-free
• Robust design
The PMA series of DC/DC regulators (POL) are
intended to be used as local distributed power sources
in distributed power architecture level 4. The PMA
series use a ceramic substrate with fine-pitch compo-
nents technology and a high degree of silicon integra-
tion. Together with the electrical design using low
Rds-On MOSFET, this provides excellent thermal
management, high reliability and high efficiency. The
high efficiency makes it possible to operate over a
wide temperature range, without adding any external
heat dissipator. At forced convection cooling >1 m/s
(200 lfm), the PMA typically delivers full power up to
+80
°
C ambient temperature.
The high reliability and the low profile of the PMA
series makes them particularly suited for the commu-
nications equipment of today and tomorrow and appli-
cations with board spacing down to 15 mm (0.6 in).
The flat case top enables pick-and-place handling and
provides a surface for attachment to cooling surfaces in
areas with limited air flow.
These products are manufactured using the most
advanced technologies and materials to comply with
environmental requirements. Designed to meet high
reliability requirements of systems manufacturers, the
PMA responds to world-class specifications.
Ericsson Power Modules is an ISO 9001/14001 certi-
fied supplier.
E
Datasheet
Absolute Maximum Ratings
Characteristics
T
C
T
S
V
I
Note:
Stress in excess of Absolute Maximum Ratings may cause permanent damage. Absolute Maximum Ratings, sometimes referred to as
no destruction limits, are normally tested with one parameter at a time exceeding the limits of Output data or Electrical Characteristics. If
exposed to stress above these limits, function and performance may degrade in an unspecified manner.
Safety
min
-45
-55
-0.3
max
+110
+125
+4.0
Unit
˚C
˚C
Vdc
Operating Case Temperature
Storage temperature
Input voltage
The PMA 4000 series DC/DC regulators
are designed in accordance with safety
standards IEC/EN/UL 60 950,
Safety of
Information Technology Equipment.
The PMA 4000 series DC/DC regulators
are UL 60 950 recognized and certified in
accordance with EN 60 950.
The DC/DC regulator should be installed
in the end-use equipment, in accordance
with the requirements of the ultimate
application. The input source must be
isolated by minimum Reinforced or
Double insulation from the primary
circuit in accordance with IEC/EN/UL
60 950. If the input voltage to the DC/
DC regulator is SELV (Safety Extra Low
Voltage) then the output remains SELV
under normal and abnormal operating
conditions.
It is recommended that a slow blow fuse
with a rating of 25A be used at the input
of each DC/DC regulator. If a fault occurs
in the regulator that imposes a short
circuit on the input source, this fuse will
provide the following functions:
• Isolate the faulty DC/DC regulator
from the input power source not to
affect the operation of other parts of
the system.
Input
TC = -30˚C...+90˚C, V
I
= 3.0...3.6V unless otherwise specified
Typ values specified at: T
C
= +25˚C, V
I
nom. V
I
nom = 3.3V, I
o
max = 12A
Characteristics
V
I
V
Ioff
V
Ion
C
I
P
Ii
P
RC
V
I
ac
Input voltage range
Turn-off input voltage
Turn-on input voltage
Input capacitance
Input idling power
Input stand-by power
(RC active)
Input ripple
Conditions
min
3.0
typ
3.3
2.3
2.4
245
max
3.6
Unit
Vdc
Vdc
Vdc
µF
mW
mW
mV
Ramping from higher
voltage
Ramping from lower
voltage
I
o
= 0
Non operation
20Hz...5MHz, I
o
max
350
15
140
1)
1) Measured with L = 1.6 µH and 10 µF at the input.
Environmental Characteristics
Characteristics
Random Vibration
Vibration
(Sinusoidal)
IEC 68-2-34E
d
Frequency
Acceleration density
Frequency range
Acceleration amplitude
Number of cycles
Mechanical shock
(half sinus)
Temperature
cycling
Accelerated damp
heat
IEC 68-2-27 E
a
IEC 68-2-14 N
a
IEC 68-2-3 C
a
with bias
Peak acceleration
Duration
Temperature
Number of cycles
Temperature
Humidity
Duration
Solde immersion depth
Time for onset of wetting
Wetting force
Fluid
Temperature
Temperature
Duration
10 ... 500 Hz
0.5 g
2
/Hz
10 ... 500 Hz
10 g or displacement
amplitude 0.75 mm
10 in each axis
200 g
3 ms
-40 ... +125 ˚C
500
+85 ˚C
85 % RH
1000 hours
2 mm
< 2.5 s
> 200 mN/m
All commercially avail-
able
-45 ˚C
+125 ˚C
1000 h
• Protect the distribution wiring from
excessive current and power loss thus
preventing hazardous overheating.
The flammability rating for all
construction parts of the DC/DC
regulator meets UL 94V-0.
IEC 68-2-6 F
c
Solderability
Resistance to
cleaning solvents
Cold (in operation)
Storage
IEC 68-2-54
Moulded package
Laser marking
IEC 68-2-1, test A
a
IEC 68-2-2 B
a
2
PMA 4000 Series Datasheet
EN/LZT 146 012 R3A © Ericsson Power Modules, November 2003
Mechanical Data
32,5 [1.28]
3,5 [0.138] (14x)
18,9 [0.75]
30,4 [1.20]
2 [0.079] (6x)
2,8 [0.110] (4x)
1
2,2 [0.087] (7x)
OUT
+SENSE
GND
Vadj
Error
amplifier
Ref
7,55 [0.297]
17,2 [0.68]
28,7 [1.13]
( 2,5 [0.1] )
35,2 ±0,5 [1.39 ±0.02]
1 [0.039] (7x)
1,8 [0.071]
0,7 [0.027] (4x)
7°
Recommended layout pattern
(component side footprint)
8,35 ±0,1
[0.334 ±0.004]
1
20 [0.79]
1,2 [0.047] (8x)
1,5 [0.059] (6x)
Coplanarity 0,1 [0.004] max
2,1 [0.083] (6x)
Standoff 0,3 ±0,1 [0.012 ±0.004]
Lead thickness 0,3 [0.012]
dimensions in mm [in]
E
Connections
Pin
1-2
3-4
5-6
7
8
9
10
11
12
13
14
Fundamental Circuit Diagram
Function
IN
Designation
+ Out
Gnd
+ In
Do not connect
Do not connect
Do not connect
RC
Select
Vadj
+Sense
NC
Output voltage
Ground
Input voltage
Reserved for future function
GND
Reserved for future function
Reserved for future function
Remote control, To turn-on and turn-
off the regulator
RC
PWM
controller
Select pin for pos/neg logic
Output voltage adjust
Remote sensing
Not connected
RC Sel
RC
Block
GND
GND
Weight
PMA 4000 SF 12g
Case
Material: Semiconductor grade epoxy.
Coefficient of thermal expansion (CTE)
is typ. 10 ppm/˚C
Pins
Material: Copper
Plating: first plating Nickel (Ni)
second plating (outer) Palladium (Pd)
7,7 [0.303]
Tolerances unless specified
±0,25 [±0.01]
Pin true position within
0,25 [0.01] with reference
to package center.
1,7 [0.067] (8x)
12,3 [0.484]
3°
PMA 4000 Series Datasheet
EN/LZT 146 012 R3A © Ericsson Power Modules, November 2003
3
PMA 4118L Output
T
C
= –30…+90°C, V
I
= 3.0 ...3.6V unless otherwise specified.
Typ values specified at: T
C
= +25°C and V
I
nom. V
I
nom = 3.3V, I
O
max = 12A. Note: +Sense must be connected to +Out
Output
Characteristics
Output voltage initial setting
and accuracy
Output adjust range
Output voltage tolerance band
Idling voltage
V
O
Line regulation
Load regulation
V
tr
t
tr
T
coeff
Unit
max
1.225
1.32
1.236
1.23
V
V
V
V
mV
mV
mV
µs
+0.1
5.9
8.3
mV/°C
ms
ms
ms
ms
12
A
W
Conditions
min
T
C
= +25°C, V
I
nom, I
O
max
T
C
= +25°C, V
I
nom, I
O
max
I
O
= 0.1...1.0 x I
O
max, V
I
= 3.0...3.6V
I
O
= 0
V
I
min ... V
I
max, I
O
max
I
O
= 0.01...1.0 x I
O
max, V
I
nom
Load step = 0.25 ... 0.75 x I
O
max,
dI/dt = 5A/µs
T
C
= 40 ... 90°C, I
O
max
0.1...0.9 x V
O
, I
O
= 0.1 ...1.0 x I
O
max, V
I
nom
From V
I
connected to V
O
= 0.9 x V
OI
,
I
O
= 0.1 ...1.0 x I
O
max, V
I
nom
I
O
= I
O
max, V
I
nom
I
O
= I
O
max, V
I
nom
0
At V
O
= V
Onom
T
C
< T
C
max
20Hz ... 5MHz, I
O
max
14.4
15
22
25
28
50
0.2
6.2
-0.1
1.175
1.00
1.164
1.17
1
4
75
23
0
typ
1.20
V
Oi
Load transient
voltage deviation
Load transient recovery time
Temperature coefficient
Ramp-up time
Start-up time
RC shut-down time to V
O
x 0.1
RC start-up time to V
O
x 0.9
Output current
Max output power
Current limit threshold
Output ripple
t
r
t
s
t
RC
off
t
RC
on
I
O
P
O
max
I
lim
V
Oac
A
mV
p-p
Miscellaneous
T
C
= –30…+90°C, V
I
= 3.0 ...3.6V unless otherwise specified.
Typ values specified at: T
C
= +25°C and V
I
nom. V
I
nom = 3.3V, I
O
max = 12A. Note: +Sense must be connected to +Out
Characteristics
η
η
P
d
Fo
I
sense
Conditions
I
O
= 0.5 x I
O
max
I
O
= I
O
max
I
O
= I
O
max
I
O
= 0 ... 1.0 x I
O
max
min
typ
89
max
Unit
%
%
Efficiency - 50% load
Efficiency - 100% load
Power Dissipation
Switching frequency
Remote sense current
Static input current
Predicted reliability
82
86.5
2.3
3.1
340
8
W
kHz
mA
A
million
hours
250
300
I
I
MTBF
V
I
= 3.0V, I
O
= I
O
max, T
C
= 25°C
T
C
= 40°C
5.6
12
4
PMA 4000 Series Datasheet
EN/LZT 146 012 R3A © Ericsson Power Modules, November 2003
PMA 4118L Typical Characteristics
Efficiency
[%]
Output Current Derating
[A]
95
90
85
80
75
70
14
12
10
3.0 V
3.3 V
3.6 V
8
6
4
2
3.0 m/s (600 lfm)
1.5 m/s (300 lfm)
1.0 m/s (200 lfm)
0.5 m/s (100 lfm)
Nat. Conv.
0
3
6
9
12
15
[A]
0
0
20
40
60
80
100
[°C]
Efficiency vs. load current and input voltage at T
C
=+25 °C
Available load current vs. ambient air temperature and
airflow at Vin=3.3 V. See conditions on page 15.
Output Characteristic
[V]
Power Dissipation
[W]
1.30
4
1.25
3
3.0 V
3.3 V
3.6 V
1.20
2
1.15
1
1.10
0
3
6
9
12
15
[A]
0
0
3
6
9
12
15
[A]
Output voltage vs. load current at T
C
=+25 °C, Vin=3.3 V.
Dissipated power vs. load current and input voltage at
T
C
=+25 °C
Start-Up
Turn-Off
Start-up at I
O
=12A resistive load at T
C
=+25 °C,
Vin=3.3 V. Start enabled by connecting V
in
.
Top trace: input voltage (2 V/div.).
Bottom trace: output voltage (0.5 V/div.).
Time scale: 5 ms/div.
Turn-off at I
O
=12A resistive load at T
C
=+25 °C,
Vin=3.3 V. Turn-off enabled by disconnecting V
in
.
Top trace: input voltage (2 V/div.).
Bottom trace: output voltage (0.5 V/div.).
Time scale: 0.5 ms/div.
PMA 4000 Series Datasheet
EN/LZT 146 012 R3A © Ericsson Power Modules, November 2003
5
