ST1S10PHR STMicroelectronics, ST1S10PHR Datasheet - Page 15

• 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 7.
6.1
PCB layout suggestion
Thermal considerations
The lead frame die pad, of ST1S10, is exposed at the bottom of the package and must be
soldered directly to a properly designed thermal pad on the PCB, the addition of thermal
vias from the thermal pad to an internal ground plane will help increase power dissipation.
Power Ground
Power Ground
Doc ID 13844 Rev 4
I
I
IN
IN
Common ground node
Common ground node
Common ground node
for power ground
for power ground
for power ground
Layout considerations
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