Datasheet > NCP1253ASN65T1G

NCP1253ASN65T1G

更新时间： 2024-09-18 12:10:47

品牌	Logo	应用领域
安森美 - ONSEMI		控制器
页数	文件大小	规格书
15页	308K
描述
Current-Mode PWM Controller for Off-line Power Supplies

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NCP1253ASN65T1G 数据手册

NCP1253

Current-Mode PWM

Controller for Off-line

Power Supplies

The NCP1253 is a highly integrated PWM controller capable of

delivering a rugged and high performance offline power supply in a

tiny TSOP−6 package. With a supply range up to 28 V, the controller

hosts a jittered 65 kHz or 100 kHz switching circuitry operated in peak

current mode control. When the power on the secondary side starts to

decrease, the controller automatically folds back its switching

frequency down to a minimum level of 26 kHz. As the power further

goes down, the part enters skip cycle while limiting the peak current.

To avoid sub harmonic oscillations in CCM operation, adjustable

slope compensation is available via the series inclusion of a simple

resistor in the current sense signal.

http://onsemi.com

TSOP−6

CASE 318G

STYLE 13

Besides the auto−recovery timer−based short−circuit protection, an

MARKING DIAGRAM

Over Voltage Protection on the V pin protects the whole circuitry in

case of optocoupler destruction or adverse open loop operation.

Features

53xAYWG

• Fixed−Frequency 65 kHz or 100 kHz Current−Mode Control

Operation

• Frequency Foldback Down to 26 kHz and Skip−Cycle in Light Load

Conditions

= Specific Device Code

= A, 2, C, or D

= Assembly Location

= Year

= Work Week

= Pb−Free Package

• Adjustable Ramp Compensation

• Internally Fixed 4 ms soft−start

• Timer−based Auto−Recovery or Latched Short−Circuit Protection

(Note: Microdot may be in either location)

• Frequency Jittering in Normal and Frequency Foldback Modes

• Latched OVP on V

PIN CONNECTIONS

• Up to 28 V V Operation

GND

DRV

• Extremely Low No−load Standby Power

• These are Pb−Free Devices

Typical Applications

• Ac−dc Converters for TVs, Set−top Boxes and Printers

• Offline Adapters for Notebooks and Netbooks

(Top View)

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 2 of this data sheet.

Publication Order Number:

January, 2012 − Rev. 0

NCP1253/D

12 3 4 5 6 7...15

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与NCP1253ASN65T1G相关器件

型号	品牌	获取价格	描述	数据表
NCP1253BSN100T1G	ONSEMI	获取价格	Current-Mode PWM Controller for Off-line Power Supplies
NCP1253BSN65T1G	ONSEMI	获取价格	Current-Mode PWM Controller for Off-line Power Supplies
NCP1254	ONSEMI	获取价格	Current-Mode PWM Controller for Off-line Power Supplies featuring Peak Power Excursion
NCP1254ASN65T1G	ONSEMI	获取价格	Current-Mode PWM Controller for Off-line Power Supplies featuring Peak Power Excursion
NCP1254BSN65T1G	ONSEMI	获取价格	Current-Mode PWM Controller for Off-line Power Supplies featuring Peak Power Excursion
NCP1255	ONSEMI	获取价格	Current-Mode PWM Controller for Off-line Power Supplies featuring Peak Power Excursion
NCP1255_13	ONSEMI	获取价格	Current-Mode PWM Controller for Off-line Power Supplies featuring Peak Power Excursion
NCP1255AD65R2G	ONSEMI	获取价格	Current-Mode PWM Controller for Off-line Power Supplies featuring Peak Power Excursion
NCP1255ASN65T1G	ONSEMI	获取价格	IC SWITCHING CONTROLLER, Switching Regulator or Controller
NCP1255BD65R2G	ONSEMI	获取价格	Current-Mode PWM Controller for Off-line Power Supplies featuring Peak Power Excursion

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