ST1S10PHR STMicroelectronics, ST1S10PHR Datasheet - Page 13

• Manufacturer Part Number: ST1S10PHR
• Description: IC REG 3A 900KHZ STEPDWN PWRSO-8
• Manufacturer: STMicroelectronics
• Type: Step-Down (Buck)r

Specifications of ST1S10PHR

• Internal Switch(s): Yes
• Synchronous Rectifier: Yes
• Number Of Outputs: 1
• Voltage - Output: 0.8 ~ 15.3 V
• Current - Output: 3A
• Frequency - Switching: 900kHz
• Voltage - Input: 2.5 ~ 18 V
• Operating Temperature: -25°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width) Exposed Pad, 8-eSOIC. 8-HSOIC
• Output Voltage: 0.8 V to 15.3 V
• Output Current: 3 A
• Input Voltage: 2.5 V to 18 V
• Switching Frequency: 0.9 MHz
• Operating Temperature Range: - 25 C to + 125 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 90 %
• For Use With: 497-8407 - BOARD EVAL STP04CM05/ST1S10497-8216 - BOARD EVAL BASED ON ST1S10497-8229 - BOARD EVAL BASED ON ST1S10
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 497-6904-2; ST1S10PHR

ST1S10
Figure 3.
Figure 4.
Figure 5.
12V
12V
VIN<8V
VIN<8V
8V<VIN<16V
8V<VIN<16V
Application schematic for heavy capacitive load
(*) see OCP and SCP descriptions for C2 and C4 selection
Application schematic for low output voltage (V
Application schematic for low output voltage (V
C1
C1
10µF
10µF
C1
C1
10µF
10µF
C1
C1
10µF
10µF
C3
C3
4.7µF
4.7µF
C3
C3
4.7µF
4.7µF
C3
C3
0.1µF
0.1µF
VIN_SW
VIN_SW
VIN_A
VIN_A
VIN_SW
VIN_SW
VIN_SW
VIN_SW
EN
EN
VIN_A
VIN_A
VIN_A
VIN_A
EN
EN
EN
EN
SYNC
SYNC
ST1S10
ST1S10
SYNC
SYNC
SYNC
SYNC
ST1S10
ST1S10
ST1S10
ST1S10
Doc ID 13844 Rev 4
AGND
AGND
AGND
AGND
AGND
AGND
PGND
PGND
PGND
PGND
PGND
PGND
SW
SW
FB
FB
SW
SW
FB
FB
L1
L1
3.3µH
3.3µH
SW
SW
FB
FB
OUT
OUT
R1
R1
L1
L1
2.2µH
2.2µH
R2
R2
L1
L1
2.2µH
2.2µH
< 2.5 V) and 8 V < V
< 2.5 V) and 2.5 V < V
R1
R1
R2
R2
R1
R1
R2
R2
C4 (*)
C4 (*)
4.7nF
4.7nF
2x22µF
2x22µF
C2(*)
C2(*)
22µF
22µF
C2
C2
Application information
5V – 3A
5V – 3A
5V – 3A
0.8V<VOUT<2.5V
0.8V<VOUT<2.5V
0.8V<VOUT<2.5V
0.8V<VOUT<2.5V
C2
C2
2x22µF
2x22µF
100µF
100µF
Electrolytic
Electrolytic
ESR<0.1Ohm
ESR<0.1Ohm
+
+
C5
C5
Output Load
Output Load
C
C
C
IN
LOAD
LOAD
LOAD
IN
< 16 V
LOAD
LOAD
< 8 V
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