4 A continuous (more than 5 A pulsed) step-down switching regulator with synchronous rectification

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  • 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.

    主要特性

    • 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

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L5988DTR HTSSOP16 Tape And Reel
批量生产
1.106 10000 EAR99 - 查看供货情况

Distributor availability ofL5988DTR

代理商名称
地区 库存 最小订购量 Third party link
Farnell Element14 EUROPE 2500 1 Order Now

代理商库存报告日期: 2019-12-09

代理商名称

Farnell Element14

库存

2500

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-12-09

获取样片
L5988D HTSSOP16 Tube
批量生产
1.106 10000 EAR99 - 没有经销商,请联系我们的销售办事处

L5988DTR

封装

HTSSOP16

包装类型

Tape And Reel

单价(US$)

1.106*

Distributor availability ofL5988DTR

代理商名称
地区 库存 最小订购量 Third party link
Farnell Element14 EUROPE 2500 1 Order Now

代理商库存报告日期: 2019-12-09

代理商名称

Farnell Element14

库存

2500

Min.Order

1

地区

EUROPE Order Now

代理商库存报告日期: 2019-12-09

供货状态

批量生产

单价(US$)

1.106

数量

10000

ECCN (US)

EAR99

Country of Origin

-

L5988D

封装

HTSSOP16

包装类型

Tube

单价(US$)

1.106*

供货状态

批量生产

单价(US$)

1.106

数量

10000

ECCN (US)

EAR99

Country of Origin

-

(*) 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

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      DS6037
      4 A continuous (more than 5 A pulsed) step-down switching regulator with synchronous rectification
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      1.95 MB
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      DS6037

      4 A continuous (more than 5 A pulsed) step-down switching regulator with synchronous rectification

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产品型号 供货状态 封装 等级规格 符合RoHS级别 Material Declaration**
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

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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