Datasheet > L7985A

L7985A

更新时间： 2024-11-15 17:33:15

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		开关稳压器
页数	文件大小	规格书
42页	1107K
描述
2A步降开关稳压器

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

L7985A 数据手册

L7985

2 A step-down switching regulator

Datasheet - production data

Applications

 Consumer: STB, DVD, DVD recorder, car

audio, LCD TV and monitors

 Industrial: PLD, PLA, FPGA, chargers

VFQFPN10 3 x 3 mm

 Networking: XDSL, modems, DC-DC modules

 Computer: optical storage, hard disk drive,

HSOP8 exp. pad

printers, audio/graphic cards

 LED driving

Features

Description

 2 A DC output current

The L7985/A is a step-down switching regulator

with a 2.5 A (minimum) current limited embedded

power MOSFET, so it is able to deliver up to 2 A

current to the load depending on the application

conditions. The input voltage can range from

4.5 V to 38 V, while the output voltage can be set

 4.5 V to 38 V input voltage

 Output voltage adjustable from 0.6 V

 250 KHz switching frequency, programmable

up to 1 MHz

 Internal soft-start and enable

starting from 0.6 V to V . Requiring a minimum

 Low dropout operation: 100% duty cycle

 Voltage feed-forward

set of external components, the device includes

an internal 250 kHz switching frequency oscillator

that can be externally adjusted up to 1 MHz. The

QFN and the HSOP packages with exposed pad

 Zero load current operation

 Overcurrent and thermal protection

 VFQFPN 3 x 3 - 10L and HSOP8 package

allow the reduction of R

40 °C/W respectively.

down to 60 °C/W and

thJA

Figure 1. Application circuit

/ꢄ

9LQ ꢉꢊꢇꢋ9ꢋ ꢁꢂ 9

9287 IURP ꢀꢊꢆꢋ9 WR 9LQ

9&&

ꢂ

287

ꢄ

ꢈ

ꢁ

ꢉ

*1'

ꢅ

6<1&+

/ꢅꢃꢂꢇ

)6:

ꢆ

'ꢄ

&203

&ꢄ

5ꢄ

5ꢈ

ꢇ

&ꢈ

&ꢇ

5ꢉ

&ꢉ

5ꢇ

*1'

$0ꢀꢁꢂꢀꢃ9ꢄ

September 2014

DocID022446 Rev 7

1/42

This is information on a product in full production.

www.st.com

12 3 4 5 6 7...42

中文翻译

下载PDF

与L7985A相关器件

型号	品牌	获取价格	描述	数据表
L7985ATR	STMICROELECTRONICS	获取价格	Voltage feed-forward
L7985TR	STMICROELECTRONICS	获取价格	2A步降开关稳压器
L7986	STMICROELECTRONICS	获取价格	3 A step-down switching regulator
L7986A	STMICROELECTRONICS	获取价格	3A步降开关稳压器
L7986ATR	STMICROELECTRONICS	获取价格	3A步降开关稳压器
L7986TA	STMICROELECTRONICS	获取价格	3 A step-down switching regulator
L7986TATR	STMICROELECTRONICS	获取价格	3A步降开关稳压器
L7986TR	STMICROELECTRONICS	获取价格	3 A step-down switching regulator
L7987	STMICROELECTRONICS	获取价格	具有可调电流限值的61 V 3 A异步降压开关稳压器
L7987L	STMICROELECTRONICS	获取价格	具有可调电流限值的61 V 2 A异步降压开关稳压器