ST1S10PHR STMicroelectronics, ST1S10PHR Datasheet - Page 2

IC REG 3A 900KHZ STEPDWN PWRSO-8

ST1S10PHR

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

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

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Contents
Contents
1
2
3
4
5
6
7
8
9
10
2/26
Application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
Layout considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.1
Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
External components selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2.1
Output capacitor (V
Output capacitor (0.8 V < V
Output voltage selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Inductor (V
Inductor (0.8 V < V
Function operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.8.1
5.8.2
5.8.3
5.8.4
5.8.5
Thermal considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Input capacitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Sync operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Inhibit function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
OCP (over-current protection) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
SCP (short circuit protection) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
SCP and OCP operation with high capacitive load . . . . . . . . . . . . . . . . 12
OUT
> 2.5 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
OUT
OUT
Doc ID 13844 Rev 4
< 2.5 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
> 2.5 V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
OUT
< 2.5 V) . . . . . . . . . . . . . . . . . . . . . . . . . 10
ST1S10

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