TPS51275
- Input Voltage Range: 5 V to 24 V
- Output Voltages: 5 V and 3.3 V (Adjustable Range ±10%)
- Built-in, 100-mA, 5-V and 3.3-V LDOs
- Clock Output for Charge-Pump
- ±1% Reference Accuracy
- Adaptive On-Time D-CAP Mode Control Architecture with 300-kHz and 355-kHz Frequency Setting
- Auto-skip Light Load Operation (TPS51275, and TPS51275C)
- OOA Light Load Operation (TPS51275B)
- Internal 0.8-ms Voltage Servo Soft-Start
- Low-Side RDS(on) Current Sensing Scheme
- Built-In Output Discharge Function
- Separate Enable Input for Switchers
- Dedicated OC Setting Terminals
- Power Good Indicator
- OVP, UVP and OCP Protection
- Non-Latch UVLO and OTP Protection
- 20-Pin, 3 mm x 3 mm, QFN (RUK)
The TPS51275, TPS51275B and TPS51275C are cost-effective, dual-synchronous buck controllers targeted for notebook system-power supply solutions. It provides 5-V and 3.3-V LDOs and requires few external components. The 260-kHz VCLK output can be used to drive an external charge pump, generating gate drive voltage for the load switches without reducing the main converter efficiency. The TPS51275, TPS51275B and TPS51275C supports high efficiency, fast transient response and provides a combined power-good signal. Adaptive on-time, D-CAP™ control provides convenient and efficient operation. The device operates with supply input voltage ranging from 5 V to 24 V and supports output voltages of 5.0 V and 3.3 V. The TPS51275, TPS51275B and TPS51275C are available in a 20-pin, 3 mm x 3 mm, QFN package and is specified from –40°C to 85°C.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | Dual Synchronous, Step-Down Controller with 5-V and 3.3-V LDOs datasheet (Rev. B) | 2013年 2月 27日 | |
| Application note | Mosfet Driver Circuit Design Guide for TPS512xx (Rev. A) | 2019年 4月 1日 | ||
| Application note | Understanding Dead-time Based On TPS51225/275/285 | 2018年 8月 22日 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 |
設計與開發
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TPS51275 Unencrypted PSpice Transient Model Package (Rev. A)
| 封裝 | 引腳 | 下載 |
|---|---|---|
| WQFN (RUK) | 20 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點