产品概述
描述
The L6983 is an easy-to-use synchronous monolithic step-down regulator capable of delivering up to 3 ADC to the load. Its wide input voltage range makes the device suitable for a broad range of applications. The device implements peak current mode architecture in a QFN16 3x3 package with internal compensation to minimize design complexity and size. The L6983 is available both in low consumption mode (LCM) and low noise mode (LNM) versions. LCM maximizes efficiency at light-load with controlled output voltage ripple, which is ideal for battery-powered applications. LNM makes the switching frequency constant and minimizes the output voltage ripple overload current range, meeting the specification for noise sensitive applications.
The L6983 allows switching frequency selection between 200 Hz and 2.2 MHz with optional spread spectrum for improved EMC. The EN pin provides enable/disable function. The typical shutdown current is 2 μA when disabled. When the EN pin is pulled up, the device is enabled and the internal 1.3 ms soft-start takes place. The device features power good open collector that monitors the FB voltage. Pulse-by-pulse current sensing on both power elements implements effective constant current protection and thermal shutdown prevents thermal runaway.
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所有功能
- 3.5 V to 38 V operating input voltage
- Output voltage from 0.85 V to VIN
- 3.3 V and 5 V fixed output voltage versions
- 3 A DC output current
- 17 μA operating quiescent current
- Internal compensation network
- Two different versions:
- LCM for high efficiency at light loads
- LNM for noise sensitive applications
- 2 μA shutdown current
- Internal soft-start
- Enable
- Overvoltage protection
- Thermal protection
- Output voltage sequencing
- QFN16 package
- 200 kHz to 2.2 MHz programmable switching frequency; stable with low ESR capacitor
- Optional spread spectrum for improved EMC
- Power good
- Synchronization to external clock for LNM devices
All resources
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产品规格 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 08 Nov 2019 | 08 Nov 2019 |
Evaluation Board Terms of Use (1)
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|---|---|---|---|---|
| 28 Apr 2021 | 28 Apr 2021 |
All resources
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Board Manufacturing Specifications (1)
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|---|---|---|---|---|
| ZIP | 11 Nov 2019 | 11 Nov 2019 |
物料清单 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 11 Nov 2019 | 11 Nov 2019 |
Schematic Pack (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 11 Nov 2019 | 11 Nov 2019 |
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | WEEE Compliant | 材料声明** |
|---|---|---|---|---|---|---|
| STEVAL-ISA208V1 | 批量生产 | CARD | 工业 | Ecopack2 | Yes | |
STEVAL-ISA208V1
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 。
样片和购买
| 产品型号 | 从分销商订购 | 从ST订购 | 核心产品 | 供货状态 | 供应商 | ECCN (US) | ECCN (EU) | Country of Origin | Board production status | Budgetary Price (US$)*/Qty | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| STEVAL-ISA208V1 | 6 distributors | Buy Direct | L6983CQTR | 批量生产 | ST | EAR99 | NEC | ITALY | - |
