L5970D013 STMicroelectronics, L5970D013 Datasheet - Page 6

• Manufacturer Part Number: L5970D013
• Description: UP TO 1A STEP DOWN SWITCHING REGULATOR
• Manufacturer: STMicroelectronics

L5970D
Figure 10. Demoboard schematic
Part list demoboard
Figure 11. Efficiency vs. Output Current
6/10
C1
C2
C3
C4
R1
R2
R3
D1
L1
94
92
90
88
86
84
82
80
78
76
74
72
70
0.1
CERAMIC
Reference
Vcc=5V
0.2
VIN = 4.4V to 25V
10 F
25V
C1
0.3
Vo=1.8V
Vo=2.5V
Vo=3.3V
0.4
0.5
Io (A)
220pF
3.3V
22nF
POSCAP 10TPB100M
C1206C221J5GAC
C1206C223K5RAC
STPS2L25U
DO3316P-333
C4
C3
0.6
SYNC.
COMP
VREF
VCC
Part Number
0.7
4.7K
R3
0.8
6
8
2
4
INH.
0.9
L5970D
3
1
7
10 F, 25V
100 F, 10V
220pF, 5%, 50V
22nF, 10%, 50V
5.6K, 1%, 0.1W 0603
3.3K, 1%, 0.1W 0603
4.7K, 1%, 0.1W 0603
2A, 25V
33 H, 2A
GND
Figure 12. Efficiency vs. Output Current
D03IN1437
92
90
88
86
84
82
80
78
76
74
72
70
1
5
Description
0.1
OUT
FB
0.2
Vcc=12V
STPS2L25U
Vo=5V
0.3
Vo=3.3V
L1 33 H
D1
Vo=2.5V
0.4
0.5
TOKIN
Sanyo
KEMET
KEMET
Neohm
Neohm
Neohm
STMicroelectronics
COILCRAFT
Io (A)
5.6K
3.3K
R1
R2
0.6
Manufacturer
VOUT=3.3V
0.7
100 F
10V
C2
0.8
0.9
1