171010550
MagI
3
C
Power Module
VDMM
– Variable Step Down MicroModule
2.5V – 5.5V / 1.2A / 0.8V – 5.5V Output
DESCRIPTION
The VDMM 171010550 MagI
3
C MicroModule provides a
fully integrated DC-DC power supply including the
switching
regulator
with
integrated
MOSFETs,
compensation, and shielded inductor in one package.
The 171010550 offers high efficiency and delivers up to
1.2A of output current. It operates with an input voltage
from 2.5V to 5.5V and is designed for a small solution size.
The selectable forced PWM or PFM/PWM mode allows for
the choice between high efficiency and low output voltage
ripple at light load.
It is available in an LGA-6EP package (2.5 x 2.5 x 1.2mm).
This module has integrated protection circuitry that guards
against thermal overstress with thermal shutdown and
protects against electrical damage using overcurrent,
short-circuit and undervoltage protections.
FEATURES
Peak efficiency up to 96%
Output current up to 1.2A
Input voltage range: 2.5V to 5.5V
Output voltage range: 0.8V to 5.5V
25 µA typical quiescent current
Integrated shielded inductor
Low output voltage ripple: ±6mV typ.
Output voltage accuracy over temperature: 2% max.
Fixed switching frequency: 4 MHz
Constant On-Time control
Synchronous operation
Selectable forced PWM or PFM/PWM mode
Undervoltage lockout protection (UVLO)
Embedded soft-start
Thermal shutdown
Short-circuit protection
Cycle-by-cycle current limit
RoHS and REACh compliant
Operating ambient temperature up to 85°C
Operating junction temp. range: -40 to 125°C
Complies with EN55032 class B radiated emissions
standard
TYPICAL APPLICATIONS
General point of load power supply for low power
systems
Replacement of linear regulators
DSP and FPGA power supply auxiliary voltages
Portable instruments
Battery powered equipment
TYPICAL CIRCUIT DIAGRAM
V
IN
4
3
VIN
EN
MODE
Module
VOUT
6
V
OUT
R
FBT
C
FF
C
OUT
R
FBB
C
IN
2
FB
1
PGND
EP
GND
PGND
5
GND
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© July 2019
Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 1.0
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171010550
MagI
3
C
Power Module
VDMM
– Variable Step Down MicroModule
PACKAGE
FB
1
PGND
6
VOUT
VOUT
6
PGND
1
FB
MODE
2
EP
5
PGND
PGND
5
EP
2
MODE
EN
3
4
VIN
VIN
4
3
EN
Top View
Bottom View
MARKING DESCRIPTION
MARKING
°WE
010550
XXYYZ
DESCRIPTION
Pin 1 Indicator + Logo
Order Code
Year + Week + Lot Number
PIN DESCRIPTION
SYMBOL
FB
NUMBER
1
TYPE
Input
DESCRIPTION
Feedback pin. This pin must be connected to the external resistor divider
(between VOUT and GND) to adjust the output voltage.
Forced PWM or PFM/PWM mode selection pin. Setting this pin high, the
forced PWM mode is selected for any load current. Setting this pin low,
PFM/PWM is selected, with the transition automatically between the two
operations according to the load. This pin must not be left floating.
Enable pin. Setting this pin high enables the device, while setting this pin low
shuts down the device. This pin must not be left floating.
Input voltage. Place the input capacitor as close as possible.
Power Ground. It must be connected to the ground plane and the Thermal
Pad.
Output voltage. Place output capacitors as close as possible. For best
thermal performance use copper plane(s) at this pin.
Exposed Pad. This pin is internally electrically connected to PGND. It is
recommended to connect it to the ground plane for device heat dissipation.
MODE
2
Input
EN
VIN
PGND
VOUT
PGND
3
4
5
6
EP
Input
Power
Power
Power
Exposed Pad
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© July 2019
Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 1.0
2/48
171010550
MagI
3
C
Power Module
VDMM
– Variable Step Down MicroModule
ORDERING INFORMATION
ORDER CODE
171010550
178010550
SPECIFICATIONS
1.2A / 0.8-5.5Vout version
1.2A / 0.8-5.5Vout version
PACKAGE
LGA-6EP
Eval Board
PACKAGING UNIT
7” Reel (1000 pieces)
SALES INFORMATION
SALES CONTACTS
Würth Elektronik eiSos GmbH & Co. KG
EMC & Inductive Solutions
Max-Eyth-Str. 1
74638 Waldenburg
Germany
Tel. +49 (0) 7942 945 0
www.we-online.com/powermodules
Technical support:
powermodules@we-online.com
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© July 2019
Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 1.0
3/48
171010550
MagI
3
C
Power Module
VDMM
– Variable Step Down MicroModule
ABSOLUTE MAXIMUM RATINGS
Caution:
Exceeding the listed absolute maximum ratings may affect the device negatively and may cause permanent damage.
LIMITS
MIN
(1)
-0.3
-0.3
-0.3
-0.15
-0.3
-65
-4
MAX
(1)
6
V
IN
+0.3
V
IN
+0.3
V
IN
+0.3
V
IN
+0.3
150
4
SYMBOL
VIN
VOUT
FB
EN
MODE
T
storage
V
ESD
Input voltage
Output voltage
Feedback pin
Enable pin
Mode pin
PARAMETER
UNIT
V
V
V
V
V
°C
kV
Assembled, non-operating storage temperature
ESD voltage (HBM), all pins (C=100pF, R= 1.5kΩ)
OPERATING CONDITIONS
Operating conditions are conditions under which the device is intended to be functional. All values are referenced to GND.
MIN and MAX limits are valid for the recommended ambient temperature range of
-40°C to 85°C.
Typical values represent
statistically the utmost probable values at the following conditions: V
IN
= 5V, V
OUT
= 1.8V, C
IN
= 4.7µF ceramic, C
OUT
=10µF
ceramic, unless otherwise noted.
SYMBOL
V
IN
V
OUT
T
A
T
JOP
I
OUT
Input voltage
PARAMETER
Output voltage (depending on the external resistor divider)
Ambient temperature range
Junction temperature range
Nominal output current
MIN
(1)
2.5
0.8
-40
-40
TYP
(2)
-
-
-
-
MAX
(1)
5.5
5.5
85
(3)
125
1.2
UNIT
V
V
°C
°C
A
THERMAL SPECIFICATIONS
SYMBOL
Ө
JA
Ө
JC
TSD
PARAMETER
Junction-to-ambient thermal resistance
(4)
Junction-to-case (exposed pad) thermal resistance
Thermal shutdown, rising
Thermal shutdown hysteresis, falling
(4)
TYP
(2)
110
82
160
10
UNIT
K/W
K/W
°C
°C
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© July 2019
Würth Elektronik eiSos GmbH & Co. KG – Data Sheet Rev. 1.0
4/48
171010550
MagI
3
C
Power Module
VDMM
– Variable Step Down MicroModule
ELECTRICAL SPECIFICATIONS
MIN and MAX limits are valid for the recommended ambient temperature range of
-40°C to 85°C.
Typical values represents
statistically the utmost probable values at the following conditions: V
IN
= 5V, V
OUT
= 1.8V, C
IN
= 4.7µF ceramic, C
OUT
=10µF
ceramic, unless otherwise noted.
SYMBOL
I
OCP
PARAMETER
Overcurrent protection
Reference voltage
Reference voltage
over temperature
Feedback input bias
current
Line regulation
Load regulation
V
OUT
Output voltage ripple
TEST CONDITIONS
Output current
T
A
= 25°C
Output accuracy
T
A
= 25°C
-40°C ≤ T
A
≤ 85°C
0.784
0.784
-
V
IN
= V
OUT
+1V to 5.5V, MODE = low
500mA < I
LOAD
< 1A
V
IN
= 3.6V, V
OUT
= 1.8V, I
OUT
= 100mA
MODE = high, 20MHz BW,
T
A
= 25°C
(5)
V
IN
= 3.6V, V
OUT
= 1.8V, I
OUT
= 100mA
MODE = low, 20MHz BW,
T
A
= 25°C
(5)
Switching frequency
Enable and undervoltage lockout
V
IN
undervoltage
threshold
V
IN
undervoltage
hysteresis
V
ENABLE
Enable threshold trip
point
Enable pin input
current
V
IN
increasing
V
IN
decreasing
T
A
= 25°C
Enable logic high voltage
T
A
= 25°C
Enable logic low voltage
T
A
= 25°C
Enable = high, T
A
= 25°C
Enable = low, T
A
= 25°C
MODE selection
MODE threshold trip
point
MODE pin input
current
Mode logic high voltage
T
A
= 25°C
Mode logic low voltage
T
A
= 25°C
MODE = high, T
A
= 25°C
MODE = low, T
A
= 25°C
Soft-Start
t
SS
Soft-start time
T
A
= 25°C (rising edge to 95% of V
OUT
)
128
µs
-
-
-
-
0.85
0.75
0.1
0.1
-
-
-
-
V
V
µA
µA
2
-
-
-
-
-
-
2.25
2
175
0.85
0.75
0.1
0.1
2.4
-
-
-
-
-
-
V
V
mV
V
V
µA
µA
-
-
-
0.8
0.8
0
0.04
-0.9
6
0.816
0.816
50
0.2
-
-
V
V
nA
%/V
%/A
mV
V
FB
1.5
2.3
3.0
A
MIN
(1)
TYP
(2)
MAX
(1)
UNIT
I
FB
-
65
-
mV
f
SW
Switching frequency
3.6
4
4.4
MHz
V
UVLO
I
ENABLE
V
MODE
I
MODE
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