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STPS5L25B
July 2003 - Ed: 5A
LOW DROP POWER SCHOTTKY RECTIFIER
I
F(AV)
5 A
V
RRM
25 V
Tj (max)
150C
V
F
(max)
0.35 V
MAIN PRODUCT CHARACTERISTICS
n
VERY LOW FORWARD VOLTAGE DROP FOR
LESS POWER DISSIPATION AND REDUCED
HEATSINK
n
OPTIMIZED CONDUCTION/REVERSE LOSSES
TRADE-OFF WHICH MEANS THE HIGHEST
EFFICIENCY IN THE APPLICATIONS
n
HIGH POWER SURFACE MOUNT MINIATURE
PACKAGE
n
AVALANCHE CAPABILITY SPECIFIED
FEATURES AND BENEFITS
Single Schottky rectifier suited to Switched Mode
Power Supplies and high frequency DC to DC con-
verters.
This device is especially intended for use as a
Rectifier at the secondary of 3.3V SMPS units.
DESCRIPTION
DPAK
1
2
3
4
NC
Symbol
Parameter
Value
Unit
V
RRM
Repetitive peak reverse voltage
25
V
I
F(RMS)
RMS forward current
7
A
I
F(AV)
Average forward current
Tc = 145C
= 0.5
5
A
I
FSM
Surge non repetitive forward current
tp = 10 ms Sinusoidal
75
A
I
RRM
Repetitive peak reverse current
tp=2 s square F=1kHz
1
A
I
RSM
Non repetitive peak reverse current
tp = 100 s square
2
A
P
ARM
Repetitive peak avalanche power
tp = 1s
Tj = 25C
3000
W
T
stg
Storage temperature range
- 65 to + 150
C
Tj
Maximum operating junction temperature *
150
C
dV/dt
Critical rate of rise of reverse voltage
10000
V/s
ABSOLUTE RATINGS (limiting values)
2
4 (TAB)
3
* :
dPtot
dTj
Rth j
a
<
-
1
(
)
thermal runaway condition for a diode on its own heatsink
STPS5L25B
2/4
Symbol
Parameter
Value
Unit
R
th(j-c)
Junction to case
2.5
C/W
THERMAL RESISTANCES
Symbol
Tests Conditions
Tests Conditions
Min.
Typ.
Max.
Unit
I
R
*
Reverse leakage current
Tj = 25C
V
R
= V
RRM
350
A
Tj = 125C
55
115
mA
V
F
*
Forward voltage drop
Tj = 25C
I
F
= 5 A
0.47
V
Tj = 125C
I
F
= 5 A
0.31
0.35
Tj = 25C
I
F
= 10 A
0.59
Tj = 125C
I
F
= 10 A
0.41
0.50
STATIC ELECTRICAL CHARACTERISTICS
Pulse test :
* tp = 380 s,
< 2%
0
1
2
3
4
5
6
0.0
0.5
1.0
1.5
2.0
2.5
IF(av) (A)
PF(av)(W)
= 0.2
= 0.5
= 1
= 0.05
= 0.1
T
=tp/T
tp
Fig. 1: Average forward power dissipation versus
average forward current.
0
25
50
75
100
125
150
0
1
2
3
4
5
6
IF(av)(A)
Rth(j-a)=70C/W
Rth(j-a)=Rth(j-c)
Tamb(C)
T
=tp/T
tp
Fig. 2: Average forward current versus ambient
temperature (
=0.5).
0
0.2
0.4
0.6
0.8
1
1.2
0
25
50
75
100
125
150
T (C)
j
P
(t )
P
(25C)
ARM p
ARM
Fig. 4: Normalized avalanche power derating
versus junction temperature.
0.001
0.01
0.1
0.01
1
0.1
10
100
1000
1
t (s)
p
P
(t )
P
(1s)
ARM p
ARM
Fig. 3: Normalized avalanche power derating
versus pulse duration.
STPS5L25B
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1E-3
1E-2
1E-1
1E+0
0
20
40
60
80
100
IM(A)
Tc=25C
Tc=100C
Tc=75C
t(s)
I
M
t
=0.5
Fig. 5: Non repetitive surge peak forward current
versus overload duration (maximum values).
1.0E-4
1.0E-3
1.0E-2
1.0E-1
1.0E+0
0.0
0.2
0.4
0.6
0.8
1.0
tp(s)
Zth(j-c)/Rth(j-c)
= 0.1
= 0.2
= 0.5
Single pulse
T
=tp/T
tp
Fig. 5: Relative variation of thermal impedance
junction to case versus pulse duration.
0
5
10
15
20
25
1E-3
1E-2
1E-1
1E+0
1E+1
1E+2
3E+2
IR(mA)
Tj=125C
Tj=25C
Tj=150C
VR(V)
Fig. 7: Reverse leakage current versus reverse
voltage applied (typical values).
1
2
5
10
20
30
100
200
500
1000
2000
VR(V)
C(pF)
F=1MHz
Tj=25C
Fig. 8: Junction capacitance versus reverse
voltage applied (typical values).
IFM(A)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0.1
1.0
10.0
100.0
VFM(V)
Typical values
Tj=150C
Tj=125C
Tj=25C
Fig. 9: Forward voltage drop versus forward
current (maximum values).
0
2
4
6
8
10
12
14
16
18
20
0
20
40
60
80
100
S(Cu) (cm)
Rth(j-a) (C/W)
Fig. 10: Thermal resistance junction to ambient
versus copper surface under tab (Epoxy printed
circuit board FR4, copper thickness: 35
m).
STPS5L25B
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PACKAGE MECHANICAL DATA
DPAK
REF.
DIMENSIONS
Millimeters
Inches
Min.
Max
Min.
Max.
A
2.20
2.40
0.086
0.094
A1
0.90
1.10
0.035
0.043
A2
0.03
0.23
0.001
0.009
B
0.64
0.90
0.025
0.035
B2
5.20
5.40
0.204
0.212
C
0.45
0.60
0.017
0.023
C2
0.48
0.60
0.018
0.023
D
6.00
6.20
0.236
0.244
E
6.40
6.60
0.251
0.259
G
4.40
4.60
0.173
0.181
H
9.35
10.10
0.368
0.397
L2
0.80 typ.
0.031 typ.
L4
0.60
1.00
0.023
0.039
V2
0
8
0
8
6.7
6.7
3
3
1.6
1.6
2.3
2.3
FOOT PRINT DIMENSIONS (in millimeters)
Ordering type
Marking
Package
Weight
Base qty
Delivery mode
STPS5L25B
STPS5L25B
DPAK
0.30g
75
Tube
STPS15LB-TR
STPS5L25B
DPAK
0.30g
2500
Tape & reel
n
Epoxy meets UL94,V0
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implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to
change without notice. This publication supersedes and replaces all information previously supplied.
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