L5970D STMicroelectronics, L5970D Datasheet - Page 9

• Manufacturer Part Number: L5970D
• Description: IC REGULATOR SW STEPDWN 8-SOIC
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of L5970D

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.2 ~ 35 V
• Current - Output: 1A
• Frequency - Switching: 250kHz
• Voltage - Input: 4.4 ~ 36 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Power - Output: 750mW
• Output Voltage: 35 V
• Output Current: 1 A
• Input Voltage: 4.4 V to 36 V
• Switching Frequency: 212 KHz to 280 KHz
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 100 %
• Low Dropout Operation: 100% duty cycle
• For Use With: 497-8849 - BOARD DEMO STW9N150 100W 3PHASE497-4132 - EVAL BOARD FOR L5970 SERIES
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-1415-5

L5970D
5
Application circuit
Figure 14. Demo board application circuit
Table 5. Component list
C1
C2
C3
C4
R1
R2
R3
D1
L1
CERAMIC
VIN = 4.4V to 25V
10µF
25V
Reference
C1
220pF
GRM32DR61E106KA12L
POSCAP 10TPB100M
C1206C221J5GAC
C1206C223K5RAC
STPS2L25U
DO3316P-333
3.3V
22nF
C4
C3
SYNC.
COMP
VREF
VCC
Part number
4.7K
R3
6
8
2
4
INH.
L5970D
3
7
10µF, 25V
100µF, 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
33µH, 2A
GND
D03IN1437
1
5
Description
OUT
FB
STPS2L25U
L1 33µH
D1
MURATA
Sanyo
KEMET
KEMET
Neohm
Neohm
Neohm
STMicroelectronics
COILCRAFT
Application circuit
Manufacturer
5.6K
3.3K
R1
R2
VOUT=3.3V
100µF
10V
C2
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