产品概述
描述
The STEVAL-ISA078V1 demonstration board is a high efficiency monolithic synchronous step-down regulator capable of delivering up to 800 mA of continuous output current and of regulating the output voltage from 0.6 V up to VINthanks to the 100% duty cycle operation capability.
The input voltage ranges from 2 V to 5.5 V.
The control loop architecture is based on a constant frequency peak current mode, while high efficiency at light loads is achieved by a low consumption functionality.
The very low quiescent current (25 μA) and shutdown current (0.2 μA) means that the device is very suitable for supplying battery-powered equipment like PDAs, hand-held terminals, DSCs (digital still cameras) and cellular phones.
The switching frequency is internally set at 600 kHz, but the device can be externally synchronized up to 1.4 MHz. An internal reference voltage of 0.6 V (typ.) allows the device to regulate a minimum output voltage of the same low value.
The low MOSFET RDS(on)ensures high efficiency at high output current.
Additional beneficial features are: hysteretic UVLO, OVP, constant current short-circuit protection, Power Good and thermal shutdown.
The MSOP8 package allows significant space savings on the board.
-
所有功能
- 2 V to 5.5 V battery input range
- High efficiency: up to 95%
- Extremely low quiescent current
- 1 μA max. shutdown supply current
- 800 mA max. output current
- Adjustable output voltage from 0.6 V
- Low dropout operation: up to 100% duty cycle
- ± 1% output voltage accuracy
- 600 MHz switching frequency externally synchronizable up to 1.4 MHz
- Short-circuit protection
- RoHS compliant
所有资源
| 资源标题 | 版本 | 更新时间 |
|---|
Board Manufacturing Specifications (1)
| 资源标题 | 版本 | 更新时间 | |||
|---|---|---|---|---|---|
| ZIP | 2.1 | 01 Aug 2015 | 01 Aug 2015 |
BOM (1)
| 资源标题 | 版本 | 更新时间 | |||
|---|---|---|---|---|---|
| 1.0 | 01 Aug 2015 | 01 Aug 2015 |
Schematic Pack (1)
| 资源标题 | 版本 | 更新时间 | |||
|---|---|---|---|---|---|
| 1.0 | 01 Aug 2015 | 01 Aug 2015 |
质量与可靠性
| 料号 | Marketing Status | 包 | 等级规格 | 符合RoHS级别 | WEEE Compliant | Longevity Commitment | Longevity Starting Date | 材料声明** |
|---|---|---|---|---|---|---|---|---|
| STEVAL-ISA078V1 | NRND | CARD | 工业 | Ecopack2 | - | - | - | |
STEVAL-ISA078V1
Package:
CARDMaterial Declaration**:
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持。
You’re now leaving st.com and will be re-directed to our Partner’s website.
For the latest innovations and solutions from ST, sign up for our newsletters.
样片和购买
| 料号 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 包 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | 供应商 | 核心产品 | Board production status | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| STEVAL-ISA078V1 | | | distributors 无法联系到经销商，请联系我们的销售办事处 |
|
|
|
STEVAL-ISA078V1 NRND