L5988D

批量生产

支持同步整流的4 A连续(5 A以上脉冲)步降开关稳压器

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概述
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样片和购买
解决方案
文件
CAD资源
工具与软件
质量与可靠性
Partner products
Sales Briefcase

产品概述

描述

The L5988D is a monolithic step down power switching regulator able to deliver a continuous output current of 4 A to the load in most of the application conditions limited only by the thermal performance. The device is able to deliver more than 5 A to the load for a maximum time which is dependent on the thermal impedance of the system and the specific operating conditions). The input voltage can range from 2.9 V to 18 V. The device is capable of 100% duty cycle operation thanks to the embedded high side PMOS switch which doesn’t need external bootstrap capacitor to be driven.
The internal switching frequency is adjustable by external resistor and can be set continuously from 100 kHz to 1 MHz. The L5988D can also be synchronized to an external frequency signal driven to the SYNCH pin I/O pin.
The multifunction UOS pin allows to set-up properly the additional embedded features depending on the value of the voltage level.
U (UVLO): two UVLO thresholds can be selected to match the 3.3 V and 5 V or 12 V input buses
O (OVP): latched or not latched OVP protection selectable. In latched mode the switching activity is interrupted until an UVLO or INH event happens
S (SINK): the sink capability is always disabled during soft-start time to support pre-biased output voltage. Afterwards the sink capability can be enabled or not depending on the voltage set on the multifunction pin.
During soft-start phase a constant current protection is active to deliver extra current necessary to load the output capacitor. The current limit protection is achieved by sensing the current flowing in both embedded switches to assure an effective protection even at extreme duty cycle operations. Finished the soft-start phase the current protection feature triggers the “HICCUP” mode forcing the soft-start capacitor to be discharged and recharged. The current thresholds of both switches can be adjusted in tracking by using an external resistor to dimension the current protection accordingly to the local application.
The soft-start time is based on a constant current charge of an external capacitor. As a consequence the time can be set accordingly to the value of the output capacitor.
The latest smart power technology BCD6 (Bipolar-CMOS-DMOS version 6) features a low resistance of the embedded switches (35 mΩ typical for a NMOS, 50 mΩ typical for a PMOS), achieving high efficiency levels.
The HTSSOP16 package with exposed pad accomplishes low RthJA (40 °C/W), useful in dissipating power internally generated during high output current / high frequency operations.
  • 所有功能

    • 4 A output current (more than 5 pulsed)
    • Operating input voltage from 2.9 V to 18 V
    • External 1.8 V ± 2% reference voltage
    • Output voltage from 0.6 to input voltage
    • MLCC compatible
    • 200 ns TON
    • Programmable UVLO matches 3.3 V, 5 V and 12 V bus
    • FSW programmable up to 1 MHz
    • Voltage feed forward
    • Zero load current operation
    • Programmable current limit on both switches
    • Programmable sink current capability
    • Pre-bias start up capability
    • Thermal shutdown

电路原理图

EDA符号、封装和3D模型

STMicroelectronics - L5988D

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Symbols

符号

Footprints

封装

3D model

3D模型

质量与可靠性

产品型号 Marketing Status 封装 等级规格 符合RoHS级别 材料声明**
L5988D
批量生产
HTSSOP16 工业 Ecopack2
L5988DTR
批量生产
HTSSOP16 工业 Ecopack2

L5988D

Package:

HTSSOP16

Material Declaration**:

Marketing Status

批量生产

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L5988DTR

Package:

HTSSOP16

Material Declaration**:

Marketing Status

批量生产

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) 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

转换器

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output Power

V This option is required and must be a number.
A This option is required and must be a number.

样片和购买

产品型号
从分销商订购
从ST订购
供货状态
ECCN (US)
ECCN (EU)
包装类型
封装
温度(ºC) Country of Origin
Budgetary Price (US$)*/Qty
最小值
最大值
L5988DTR Available at 2 distributors

经销商的可用性L5988DTR

代理商名称
地区 库存 最小订购量 第三方链接
AVNET AMERICA 1000 0 Buy from Distributor
Farnell Element14 EUROPE 2409 1 Buy from Distributor

代理商库存报告日期: 2021-11-30

代理商名称

AVNET

库存

1000

Min.Order

0

地区

AMERICA Buy from Distributor

Farnell Element14

库存

2409

Min.Order

1

代理商库存报告日期: 2021-11-30

Free Sample Buy Direct
批量生产
EAR99 NEC Tape And Reel HTSSOP16 -40 150 PHILIPPINES 1.299 / 1k
L5988D Available at 1 distributors

经销商的可用性L5988D

代理商名称
地区 库存 最小订购量 第三方链接
COMPEL EUROPE 149 1 Buy from Distributor

代理商库存报告日期: 2021-11-30

代理商名称

COMPEL

库存

149

Min.Order

1

代理商库存报告日期: 2021-11-30

Buy Direct
批量生产
EAR99 NEC Tube HTSSOP16 -40 150 PHILIPPINES 1.299 / 1k

L5988DTR

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.299 / 1k

经销商的可用性L5988DTR

代理商名称
地区 库存 最小订购量 第三方链接
AVNET AMERICA 1000 0 Buy from Distributor
Farnell Element14 EUROPE 2409 1 Buy from Distributor

代理商库存报告日期: 2021-11-30

代理商名称

AVNET

库存

1000

Min.Order

0

地区

AMERICA Buy from Distributor

Farnell Element14

库存

2409

Min.Order

1

代理商库存报告日期: 2021-11-30

ECCN (EU)

NEC

包装类型

Tape And Reel

封装

HTSSOP16

Operating Temperature (°C)

(最小值)

-40

(最大值)

150

Budgetary Price (US$)* / Qty

1.299 / 1k

Country of Origin

PHILIPPINES

L5988D

供货状态

批量生产

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.299 / 1k

经销商的可用性L5988D

代理商名称
地区 库存 最小订购量 第三方链接
COMPEL EUROPE 149 1 Buy from Distributor

代理商库存报告日期: 2021-11-30

代理商名称

COMPEL

库存

149

Min.Order

1

代理商库存报告日期: 2021-11-30

ECCN (EU)

NEC

包装类型

Tube

封装

HTSSOP16

Operating Temperature (°C)

(最小值)

-40

(最大值)

150

Budgetary Price (US$)* / Qty

1.299 / 1k

Country of Origin

PHILIPPINES

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商