Datasheet > LTC4269IDKD-2#PBF

LTC4269IDKD-2#PBF

更新时间： 2024-11-05 21:00:51

品牌	Logo	应用领域
凌特 - Linear		开关光电二极管
页数	文件大小	规格书
34页	375K
描述
LTC4269-2 - IEEE 802.3at High Power PD and Synchronous Forward Controller with AUX Support; Package: DFN; Pins: 32; Temperature Range: -40°C to 85°C

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LTC4269IDKD-2#PBF 技术参数

是否Rohs认证：	符合	生命周期：	Transferred
零件包装代码：	DFN	包装说明：	HVSON, SOLCC32,.16,16
针数：	32	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	5.2	模拟集成电路 - 其他类型：	SWITCHING CONTROLLER
控制模式：	CURRENT-MODE	控制技术：	PULSE WIDTH MODULATION
最大输入电压：	25 V	最小输入电压：	10 V
标称输入电压：	12 V	JESD-30 代码：	R-PDSO-N32
JESD-609代码：	e3	长度：	7 mm
湿度敏感等级：	1	功能数量：	1
端子数量：	32	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	HVSON	封装等效代码：	SOLCC32,.16,16
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：	260	认证状态：	Not Qualified
座面最大高度：	0.8 mm	子类别：	Switching Regulator or Controllers
表面贴装：	YES	切换器配置：	SINGLE
最大切换频率：	560 kHz	技术：	CMOS
温度等级：	INDUSTRIAL	端子面层：	Matte Tin (Sn)
端子形式：	NO LEAD	端子节距：	0.4 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	30
宽度：	4 mm	Base Number Matches：	1

LTC4269IDKD-2#PBF 数据手册

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LTC4269-2

IEEE 802.3at High Power PD

and Synchronous Forward

Controller with AUX Support

DescripTion

FeaTures

The LTC^®4269-2 is an integrated Powered Device (PD)

interfaceandpowersupplycontrollerfeaturing2-event

classiﬁcation signaling, ﬂexible auxiliary power op-

tions, and a power supply controller suitable for syn-

chronously rectiﬁed forward supplies. These features

make the LTC4269-2 ideally suited for an IEEE802.3at

PD application.

25.5W IEEE 802.3at Compliant (Type-2) PD

PoE 2-Event Classiﬁcation

IEEE 802.3at High Power Available Indicator

Integrated State-of-the-Art Synchronous Forward

Controller

– Isolated Power Supply Efﬁciency >94%

Flexible Auxiliary Power Interface

Superior EMI Performance

The PD controller features a 100V MOSFET that isolates

the power supply during detection and classiﬁcation, and

provides 100mA inrush current limit. Also included are

power good outputs, an undervoltage/overvoltage lock-

out and thermal protection. The current mode forward

controller allows for synchronous rectiﬁcation, resulting

in an extremely high efﬁciency, green product. Soft-start

for controlled output voltage start-up and fault recovery is

included.Programmablefrequencyover100kHzto500kHz

allows ﬂexibility in efﬁciency vs size and low EMI.

Robust 100V 0.7Ω (Typ) Integrated Hot Swap™

MOSFET

Integrated Signature Resistor, Programmable Class

Current, UVLO, OVLO and Thermal Protection

Short-Circuit Protection with Auto-Restart

Programmable Switching Frequency from

100kHz to 500kHz

Thermally Enhanced 7mm × 4mm DFN Package

applicaTions

IP Phones with Large Color Screens

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

Hot Swap, ThinSOT are trademarks of Linear Technology Corporation. All other trademarks

are the property of their respective owners.

Dual Radio 802.11n Access Points

PTZ Security Cameras

Typical applicaTion

PoE-Based Self-Driven Synchronous Forward Power Supply

1mH

•

6.8µH

•

10µH

10µF

5.1Ω

220µF

•

33k

4.7nF

2.2µF

237k

0.1µF

10.0k

10µF

~ +

~ –

54V FROM

DATA PAIR

10k

133Ω

4.7nF

SD_V

SEC

PORTP

OUT

PWRGD

OUT

~ +

~ –

54V FROM

SPARE PAIR

11.3k

1.5k

33k

50mΩ

0.1µF

SENSE

10nF

22k

LTC4269-2

CLASS

COMP

0.1µF

30.9Ω

SHDN

1.2k

REF

PORTN

T2P V

NEG

PGND GND BLANK DELAY

SS_MAXDC

22.1k

OSC

TLV431

3.65k

0.22µF

82k

332k 158k

158k

42692 TA01

MICRO-

CONTROLLER

42692fb

ꢀ

12 3 4 5 6 7...34

中文翻译

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与LTC4269IDKD-2#PBF相关器件

型号	品牌	获取价格	描述	数据表
LTC4269IDKD-2#TR	Linear	获取价格	IC SWITCHING CONTROLLER, 560 kHz SWITCHING FREQ-MAX, PDSO32, 7 X 4 MM, PLASTIC, M0-229, DF
LTC4269IDKD-2#TRPBF	Linear	获取价格	LTC4269-2 - IEEE 802.3at High Power PD and Synchronous Forward Controller with AUX Support
LTC4269IDKD-2-PBF	Linear	获取价格	IEEE 802.3at High Power PD and Synchronous Forward Controller with AUX Support
LTC4269IDKD-2-TR	Linear	获取价格	IEEE 802.3at High Power PD and Synchronous Forward Controller with AUX Support
LTC4269IDKD-2-TRPBF	Linear	获取价格	IEEE 802.3at High Power PD and Synchronous Forward Controller with AUX Support
LTC4270	Linear	获取价格	12-Port PoE/PoE+/LTPoE++ PSE Controller
LTC4270	ADI	获取价格	12 端口 PoE / PoE+ / LTPoE++ PSE 控制器
LTC4270/	Linear	获取价格	8-Port PoE/PoE PSE Controller
LTC4270_12	Linear	获取价格	12-Port PoE/PoE+/LTPoE++ PSE Controller
LTC4270_15	Linear	获取价格	12-Port PoE/PoE/LTPoE PSE Controller

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