音影先锋亚洲天堂网|电影世界尽头的爱完整版播放|国产 熟女 91|高清无码免费观看欧美日韩|韩国一区二区三区黄色录像|美女亚洲加勒比在线|亚洲综合网 开心五月|7x成人在线入口|成人网站免费日韩毛片区|国产黄片?一级?二级?三级

LM2618BTLX Datasheet

  • LM2618BTLX

  • 400mA Sub-miniature, High Efficiency, Synchronous PWM & PFM ...

  • 417.58KB

  • 16頁

  • NSC

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預(yù)覽

LM2618 400mA Sub-miniature, High Efficiency, Synchronous PWM & PFM Programmable DC-DC
Converter
September 2002
LM2618
400mA Sub-miniature, High Efficiency, Synchronous
PWM & PFM Programmable DC-DC Converter
General Description
The LM2618 step-down DC-DC converter is optimized for
powering low voltage circuits from a single Lithium-Ion cell. It
provides up to 400mA (300mA for B grade), over an input
voltage range of 2.8V to 5.5V. Pin programmable output
voltages of 1.80V, 1.83V, 1.87V or 1.92V allow adjustment
for MPU voltage options without board redesign or external
feedback resistors. Internal synchronous rectification pro-
vides high efficiency in both PWM and PFM operation.
The device has three pin-selectable modes for maximizing
battery life in mobile phones and similar portable applica-
tions. Low-noise PWM mode offers 600kHz fixed-frequency
operation to reduce interference in RF and data acquisition
applications during full-power operation. A SYNC input al-
lows synchronizing the switching frequency in a range of
500kHz to 1MHz to avoid noise from intermodulation with
system frequencies. Low-current hysteretic PFM mode re-
duces quiescent current to 180 碌A(chǔ) (typ.) during system
standby. Shutdown mode turns the device off and reduces
battery consumption to 0.02碌A(chǔ) (typ.). Additional features
include soft start and current overload protection.
The LM2618 is available in a 10 pin micro SMD packge. This
package uses National鈥檚 wafer level chip-scale micro SMD
technology and offers the smallest possible size. Only three
small external surface-mount components, an inductor and
two ceramic capacitors are required.
Key Specifications
n
Operates from a single LiION cell (2.8V to 5.5V)
n
Internal synchronous rectification provides high
efficiency in both PWM and PFM
n
Pin programmable output voltage (1.80V, 1.83V, 1.87V
and 1.92V)
n
400mA maximum load capability (300mA for B grade)
n
鹵
2% PWM mode DC output voltage precision
n
5mV typ PWM mode output voltage ripple
n
180 碌A(chǔ) typ PFM mode quiescent current
n
0.02碌A(chǔ) typ shutdown mode current
n
Internal synchronous rectification for high efficiency
(91% at 3.0V
IN
, 1.92V
OUT
)
n
600kHz PWM mode switching frequency
n
SYNC input for PWM mode frequency synchronization
from 500kHz to 1MHz
Features
n
Sub-miniature 10-pin micro SMD package
n
Only three tiny surface-mount external components
required
n
Uses small ceramic capacitors.
n
Internal soft start
n
Current overload protection
n
Thermal Shutdown Protection
n
No external compensation required
Applications
n
Mobile Phones
n
Hand-Held Radios
n
Battery Powered Devices
Typical Application Circuit
20036402
漏 2002 National Semiconductor Corporation
DS200364
www.national.com

LM2618BTLX 產(chǎn)品屬性

  • 3,000

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器

  • -

  • 降壓（降壓）

  • 可調(diào)式

  • 1

  • 1.8 V ~ 1.92 V

  • 2.8 V ~ 5.5 V

  • 電流模式

  • 600kHz

  • 300mA

  • 是

  • -25°C ~ 125°C

  • 表面貼裝

  • 10-WFBGA

  • 帶卷 (TR)

  • 10-uSMD

LM2618BTLX相關(guān)型號PDF文件下載

您可能感興趣的PDF文件資料

熱門IC型號推薦

掃碼下載APP，
一鍵連接廣大的電子世界。

在線人工客服

買家服務(wù)：
賣家服務(wù)：
技術(shù)客服：

0571-85317607

網(wǎng)站技術(shù)支持

13606545031

客服在線時間周一至周五
9:00-17:30

關(guān)注官方微信號，
第一時間獲取資訊。

建議反饋
返回頂部

建議反饋

聯(lián)系人：

聯(lián)系方式：

按住滑塊，拖拽到最右邊
>>
感謝您向阿庫提出的寶貴意見，您的參與是維庫提升服務(wù)的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！