Datasheet
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© May 2016
Würth Elektronik eiSos GmbH & Co. KG - Data Sheet - REV 1.0
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WPMDU1251501 / 171021501
MagI³C Power Module
VDRM - Variable Step Down Regulator Module
ELECTRICAL SPECIFICATIONS
MIN and MAX limits are valid for the recommended ambient temperature range of -40°C to 85°C. Typical values represent
statistically the utmost probability at following conditions: V
IN
= 24 V, V
OUT
= 5.0 V, I
OUT
= 2.5 A, RT = Open, C
IN
= 2 x 2.2 μF
ceramic, C
OUT
= 2 x 47 μF ceramic, unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
(1)
TYP
(2)
MAX
(1)
UNIT
Output current
I
OCP
Over current protection
-
5.1
-
A
Accuracy
V
FB
Reference accuracy
T
A
= 25°C; I
OUT
= 100mA
with internal feedback resistor
-
-
±2.0
(7)
%
Temperature variation
-40°C ≤ T
A
≤ +85°C
-
±0.5
±1.0
%
V
OUT
Line regulation
Over input voltage range
-
±0.1
-
%
Load regulation
Over output current range
-
±0.4
-
%
Total output voltage variation
Includes set-point, line, load,
and temperature variation
-
-
±3.0
(7)
%
Output voltage ripple
0.25A ≤ I
OUT
≤ 2.5A, V
OUT
≥3.3V
-
1
-
% of
V
OUT
Switching frequency
f
SW
Free-running oscillator
frequency
RT/CLK pin open
300
400
500
kHz
f
CLK
Synchronization clock
frequency range
300
-
1000
kHz
D
CLK
Synchronization clock duty
cycle range
25
50
75
%
V
CLK-H
High-level threshold CLK
Relative to AGND
-
1.9
2.2
V
V
CLK-L
Low-level threshold CLK
Relative to AGND
0.5
0.7
-
V
Enable and undervoltage lockout
V
UVLO
V
IN
undervoltage lockout
No hysteresis, rising and falling
-
2.5
-
V
V
EN
EN threshold trip point
V
EN
rising and falling, no
hysteresis
1.15
1.25
1.36
(8)
V
I
EN
EN input current
V
EN
< 1.15V
-
-0.9
-
µA
V
EN
> 1.36 V
-
-3.8
-
µA
I
EN
to AGND, V
EN
= 0V
-
1.3
4
µA
Power Good
PG
Power good thresholds
V
OUT
rising, V
OUT
GOOD
-
94
-
%
V
OUT
rising, V
OUT
FAULT
-
109
-
%
V
OUT
falling, V
OUT
GOOD
-
91
-
%
V
OUT
rising, V
OUT
FAULT
-
106
-
%
Power good low voltage
I(PG) = 3.5mA
-
0.2
-
V
Efficiency
η
Efficiency
V
IN
= 24V, I
OUT
= 1.5 A,
V
OUT
= 5 V, f
SW
= 500 kHz
-
84
-
%
V
IN
= 48V I
OUT
= 1.5A,
V
OUT
= 5V, f
SW
= 500 kHz
-
79
-
%