ST1S10PHR STMicroelectronics, ST1S10PHR Datasheet - Page 4

• 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

Pin configuration
2
Figure 2.
Table 2.
4/26
Pin n°
epad
1
2
3
4
5
6
7
8
Pin configuration
Pin connections (top view for PowerSO-8, bottom view for DFN8)
Pin description
INH (EN)
Symbol
V
AGND
PGND
SYNC
V
epad
DFN8 (4x4)
IN_SW
V
SW
IN_A
FB
Analog input supply voltage to be tied to V
Inhibit pin active low. Connect to V
Feedback voltage for connection to external voltage divider to set the V
from 0.8 V up to 0.85 * V
Analog ground
Synchronization and frequency select. Connect SYNC to GND for 900 kHz
operation, or to an external clock from 400 kHz to 1.2 MHz. (see
Sync
Power input supply voltage to be tied to V
Switching node to be connected to the inductor
Power ground
Exposed pad to be connected to ground
operation)
Doc ID 13844 Rev 4
IN_SW
Name and function
. (see
IN_A
Section 5.5: Output voltage
if not used
IN
IN
power supply source
supply source
PowerSO-8
Section 5.8.1:
selection)
ST1S10
OUT