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

SC2542TETRT Datasheet

  • SC2542TETRT

  • High Performance Wide Input Range Dual Synchronous Buck Cont...

  • 27頁

  • SEMTECH   SEMTECH

掃碼查看芯片數(shù)據(jù)手冊

上傳產(chǎn)品規(guī)格書

PDF預覽

High Performance Wide Input Range
Dual Synchronous Buck Controller
POWER MANAGEMENT
Description
SC2542 is a high performance dual PWM controller. It is
designed to convert a widely ranged battery rail down to
two independent output rails. The PWM operation of the
two channels are 180 degrees out of phase which can
greatly reduce the size and the cost of the input capaci-
tors. Synchronous buck PWM topology and voltage mode
control allow fast transient response and flexible com-
ponent selection for easy designs. A 5V standby regula-
tor is integrated. A 10V internal linear regulator provides
the bias for the controller, and this voltage is optimized
for gate drivers to deliver high efficiency.
The light load efficiency can be greatly improved by turn-
ing off the low side MOSFET upon reversal of inductor
current. There is no need for a current sensing resistor
because the MOSFET on resistance is used as the sens-
ing element. Under extreme light load conditions, the
device will operate in a pulse skip mode. The switching
frequency can be dropped significantly to a level pro-
grammed by external resistors. The battery energy is bet-
ter utilized with these efficiency enhancement schemes.
The power sequencing is fully supported including inde-
pendent start up and power good output. In shutdown
mode the controller only draws 100nA from the supply.
The controller also offers full protection features for the
conditions of under voltage, over voltage, and over cur-
rent. The switching frequency is adjustable from 100KHz
to 300KHz. TSSOP-28-EDP package is offered.
SC2542
Features
Independent dual-switcher-outputs
Integrated 5V standby output with over 50mA
capability
Wide input voltage range: 6.5V ~ 28V
Adjustable output voltage down to 0.75V
Light load efficiency enhancement
Programmable skip mode operation
Flexible power sequencing with enable and power
good output
Synchronous buck topology with voltage mode
control
Out of phase operation to reduce cost of input
capacitor
10V internal regulator for gate driver to deliver high
efficiency
Programmable switching frequency:
100KHz ~ 300KHz
Full protection: UVLO, OVP, and programmable OCP
No need for current sense resistor
Low standby operating current (200
碌A typical)
Low shut down current (100nA typical)
28 lead TSSOP package with exposed die pad
(EDP)
Fully WEEE package and RoHS Compliant
Applications
Notebook computer system power
Systems with 6.5V ~ 28V input
Network and telecom systems
Other portable devices
Typical Application Circuit
VIN+
1
VCC
2
3
4
5
6
7
8
VIN+
9
10
11
VO1 (3.3V/10A)
12
13
FB1
14
SC2542
VIN
VCC
EN
STBY
FB1
ERROUT1
MINSET1
SS1
ILIM1
BST1
DRVH1
PHASE1
DRVL1
PGND
TH-PAD
AGND
5VSBY
ROSC
PWRGD
FB2
ERROUT2
MINSET2
SS2
ILIM2
BST2
DRVH2
PHASE2
DRVL2
PVCC
28
27
26
25
24
23
22
21
VIN+
20
19
18
VO2 (5V/10A)
17
16
15
VCC
FB2
PWGRD
FB2
5VSBY
VO1
ENABLE
STBY MODE
FB1
Revision: August 24, 2005
1
www.semtech.com

SC2542TETRT 產(chǎn)品屬性

  • 0現(xiàn)貨

  • 停產(chǎn)

  • -

  • 卷帶（TR）

  • 停產(chǎn)

  • 晶體管驅動器

  • 降壓

  • 正

  • 降壓

  • 2

  • 2

  • 6.5V ~ 28V

  • 100kHz ~ 300kHz

  • 90%

  • 是

  • 無

  • -

  • 限流，使能，頻率控制，相位控制，電源良好，軟啟動

  • -40°C ~ 85°C（TA）

  • 表面貼裝型

  • 28-SOIC（0.173"，4.40mm 寬）裸露焊盤

  • 28-TSSOP-EDP

SC2542TETRT相關型號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：
賣家服務：
技術客服：

0571-85317607

網(wǎng)站技術支持

13606545031

客服在線時間周一至周五
9:00-17:30

關注官方微信號，
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的動力！意見一經(jīng)采納，將有感恩紅包奉上哦！