ST1S10 Monolithic synchronous step-down regulator
The ST1S10 is a high efficiency step-down PWM current mode switching regulator capable of providing up to 3 A of output current. The device operates with an input supply range from 2.5 V to 18 V and provides an adjustable output voltage from 0.8 V (VFB) to 0.85*VIN_SW [VOUT = VFB*(1+R1/R2)]. It operates either at a 900 kHz fixed frequency or can be synchronized to an external clock (from 400 kHz to 1.2 MHz). The high switching frequency allows the use of tiny SMD external components, while the integrated synchronous rectifier eliminates the need for a Schottky diode. The ST1S10 provides excellent transient response, and is fully protected against thermal overheating, switching over-current and output short circuit.
The ST1S10 is the ideal choice for point-of-load regulators or LDO pre-regulation
技术特性
- Step-down current mode PWM regulator
- Output voltage adjustable from 0.8 V
- Input voltage from 2.5 V up to 18 V
- 2% DC output voltage tolerance
- Synchronous rectification
- Inhibit function
- Synchronizable switching frequency from 400 kHz up to 1.2 MHz
- Internal soft start
- Dynamic short circuit protection
- Typical efficiency: 90%
- 3 A output current capability
- Stand-by supply current: max 6 μA over temperature range
- Operative junction temp: from - 40 °C to 125 °C
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功能框图
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ST1S10 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| ST1S10PHR |
Active |
|
1000 |
PowerSO-8 |
Tape And Reel |
|
ST1S10PHR |
| ST1S10PUR |
Active |
|
1000 |
VFDFPN 8 4x4x1.0 |
Tape And Reel |
|
ST1S10PUR |
| ST1S10BPHR |
Active |
|
1000 |
PowerSO-8 |
Tape And Reel |
|
ST1S10BPHR |
DATASHEET
| 描述 |
版本 |
大小 |
| ST1S10 : DS5438: 3 A, 900 kHz, monolithic synchronous step-down regulator IC |
5 |
803KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN2754: Buck high-brightness LED driver based on the ST1S10 step-down DC-DC converter voltage regulator |
1 |
309KB |
| AN2620: 3 A high-frequency synchronous 900 kHz step-down converter based on the ST1S10 |
3 |
1261KB |
PRODUCT PRESENTATIONS
BOARDS AND TOOLS
| 型号 |
描述 |
| STEVAL-ISA044V1 |
3 A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10 |
| STEVAL-ISA044V5 |
3 A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10 (Power SO-8) |
| STEVAL-ISA044V2 |
A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10 |
| STEVAL-ILL009V5 |
New RGB color demonstration board based on the STP04CM05 and ST1S10 |
| STEVAL-ISA044V6 |
3 A synchronous 900 kHz step-down DC-DC converter with inhibit function based on the ST1S10 (DFN) |
