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E-L5970D
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P16
Application circuit
L5970D
10/16
Figure 15.
PCB lay
out (component side)
Figure 16.
PCB la
yout
(bottom side)
Figure 17.
PCB la
yout
(front
side)
L5970D
Application id
eas
11/16
6 Application
ideas
Figure 18.
Dual output v
oltage with auxiliary winding
Figure 19.
Buc
k-boost regulator
Figure 20.
P
ositive Buck-Boost
regulator
Figure 21.
Synchr
onization example
VIN=12
V
C1
10uF
25V
Ceramic
D1
STPS25L25U
VCC
COMP
GND
OU
T
FB
INH
SYN
C
VR
EF
L5970D
1
3
7
5
6
4
8
2
R3
4.7k
U1
C3
22nF
3.3V
VOUT
=3.
3V
0.5A
C2
220pF
VOUT1=5V
30mA
C5
47uF
10V
Lp=22uH
D2
1N4148
C4
100uF
10V
N1/N2=2
VIN=
12V
C1
10uF
25V
Cer
amic
D1
STPS2L25
U
VCC
COMP
GND
OUT
FB
INH
SYNC
VREF
1
3
7
5
6
4
8
2
R3
4.7k
U1
L1
33uH
2.7
k
24k
C4
22nF
3.3V
C5
100uF
16V
L597
0
VOUT=-1
2V/0.3A
C3
220pF
C2
10uF
35V
Cer
a
mi
c
Vin=
12V
Vout
=-12
V Iout=0.5A
Effic
iency
=81%
VI
N=5
V
C1
10uF
25V
Ce
r
a
mi
c
D1
STP
S2L25U
VC
C
CO
MP
GND
OU
T
FB
INH
SYNC
VREF
L5970
1
3
7
5
6
4
8
2
R3
4.
7k
U1
L1
33uH
24k
2.7k
C3
22nF
3.
3
V
C4
100uF
16V
VO
U
T=1
2V/0.3A
C2
220pF
D2
ST
PS2L2
5U
M1
STN4NE03L
Vin=
5V
Vout
=
12V
Iout
=
0.3
A
Ef
f
i
ci
ency
=76%
VC
C
GND
OUT
FB
INH
SYNC
VREF
1
3
7
5
6
4
8
2
L5970D
COM
P
VCC
GND
OU
T
FB
INH
SYNC
VREF
1
3
7
5
6
4
8
2
L5970D
COM
P
VI
N
Package mech
anical data
L5970D
12/16
7
P
ac
kage mechanical data
In order to meet en
vironmental requirements
, ST off
ers these de
vices in ECOP
ACK®
pack
ages. T
hese pack
ages hav
e a Lead-free second
le
vel
interconnect . The
category of
second le
v
el interconnect is mark
ed on the pac
kage and on the inner bo
x label, in
compliance with JEDEC Standard
JESD97. The maximum ratin
gs related to soldering
conditions are also mark
ed on the inner bo
x
label. ECOP
A
CK is an ST trademark.
ECOP
ACK specifications are av
ailable at:
www
.st.com
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P16
E-L5970D
Mfr. #:
Buy E-L5970D
Manufacturer:
STMicroelectronics
Description:
IC REG BUCK ADJUSTABLE 1A 8SO
Lifecycle:
New from this manufacturer.
Delivery:
DHL
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Ups
TNT
EMS
Payment:
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