Datasheet > 电源电路 > 开关式稳压器或控制器> TEA1738LT

TEA1738LT

更新时间： 2024-11-11 08:50:15

品牌	Logo	应用领域
恩智浦 - NXP		稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数	文件大小	规格书
21页	177K
描述
GreenChip SMPS control IC Adjustable overpower time-out

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TEA1738LT 技术参数

生命周期：	Active	零件包装代码：	SOIC
包装说明：	SOP,	针数：	8
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.71
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：	30 V
最小输入电压：	12 V	标称输入电压：	20 V
JESD-30 代码：	R-PDSO-G8	长度：	4.9 mm
功能数量：	1	端子数量：	8
封装主体材料：	PLASTIC/EPOXY	封装代码：	SOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
认证状态：	Not Qualified	座面最大高度：	1.75 mm
表面贴装：	YES	切换器配置：	SINGLE
最大切换频率：	78 kHz	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
宽度：	3.9 mm	Base Number Matches：	1

TEA1738LT 数据手册

TEA1738T; TEA1738LT

GreenChip SMPS control IC

Rev. 1 — 31 December 2010

Preliminary data sheet

1. General description

The TEA1738(L) is a low cost Switched Mode Power Supply (SMPS) controller IC

intended for flyback topologies. The TEA1738(L) operates in peak current and frequency

control mode. Frequency jitter has been implemented to reduce ElectroMagnetic

Interference (EMI). Slope compensation is integrated for Continuous Conduction Mode

(CCM) operation.

The TEA1738(L) IC includes OverPower Protection (OPP). This enables the controller to

operate under overpower situations for a limited amount of time.

Two pins, VINSENSE and PROTECT, are reserved for protection purposes. Input

UnderVoltage Protection (UVP), output OverVoltage Protection (OVP) and

OverTemperature Protection (OTP) can be implemented using a minimal number of

external components.

At low power levels the primary peak current is set to 25 % of the maximum peak current

and the switching frequency is reduced to limit switching losses. The combination of fixed

frequency operation at high output power and frequency reduction at low output power

provides high efficiency over the total load range.

The TEA1738(L) enables low cost, highly efficient and reliable supplies for power

requirements up to 75 W to be designed easily and with a minimum number of external

components.

2. Features and benefits

2.1 Features

 SMPS controller IC enabling low-cost applications

 Large input voltage range (12 V to 30 V)

 Integrated OverVoltage Protection (OVP) on pin VCC

 Very low supply current during start-up and restart (10 A typical)

 Low supply current during normal operation (0.55 mA typical without load)

 Overpower or high/low line compensation

 Adjustable overpower time-out

 Adjustable overpower restart timer

 Fixed switching frequency with frequency jitter to reduce EMI

 Frequency reduction at medium power operation to maintain high efficiency

12 3 4 5 6 7...21

中文翻译

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与TEA1738LT相关器件

型号	品牌	获取价格	描述	数据表
TEA1738T	NXP	获取价格	GreenChip SMPS control IC Adjustable overpower time-out
TEA1742T	NXP	获取价格	GreenChip PFC controller
TEA1742T/N1,118	NXP	获取价格	IC CTRLR GREENCHIP PFC 8-SOIC
TEA1750	NXP	获取价格	GreenChip III SMPS control IC
TEA1750T	NXP	获取价格	GreenChip III SMPS control IC
TEA1750T/N1	NXP	获取价格	IC,SMPS CONTROLLER,CURRENT-MODE,SOP,16PIN,PLASTIC
TEA1750T-T	NXP	获取价格	IC,SMPS CONTROLLER,CURRENT-MODE,SOP,16PIN,PLASTIC
TEA1751LT	NXP	获取价格	GreenChip III SMPS control IC
TEA1751LT/N1,518	NXP	获取价格	HV start-up DCM/QR flyback controller with integrated DCM/QR PFC controller SOP 16-Pin
TEA1751LT/N1/G,518	NXP	获取价格	HV start-up DCM/QR flyback controller with integrated DCM/QR PFC controller SOP 16-Pin

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