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| 型号： | TEA1761T/N2 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 稳压器 |
| 英文描述： | 1.4 A SWITCHING CONTROLLER, PDSO8 |
| 封装： | 3.90 MM, PLASTIC, MS-012, SOT-96-1, SOP-8 |
| 文件页数： | 9/13页 |
| 文件大小： | 78K |
| 代理商： | TEA1761T/N2 |
TEA1761T_2
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 02 — 25 April 2007
5 of 13
NXP Semiconductors
TEA1761T
GreenChip synchronous rectier controller
7.4 Opto output
The opto output is intended to drive an opto coupler (see Figure 5). The opto output has
an open-drain output conguration. The maximum sink current is internally limited to 5 mA
(typical). The output is linearly controlled via the VSENSE and ISENSE input pins. An
over-temperature situation will switch the opto output to its maximum sink current.
During start-up (VCC <Vstartup) and undervoltage lock-out the output is disabled.
7.5 Supply management
All (internal) reference voltages are derived from a temperature compensated, on-chip
band gap circuit. The reference voltage is trimmed to an accuracy within 1 %.
7.6 OverTemperature Protection (OTP)
The IC provides an accurate internal overtemperature protection of 150
°C (typical). The
IC will maximize the current of pin OPTO as soon as the internal temperature limit is
reached. The opto signal can be used on the primary side of the yback controller to
activate the SMPS protection or limit the output power. As soon as the overtemperature
condition is solved, normal operation will resume.
7.7 Driver
The driver circuit to the gate of the external power MOSFET has a source capability of
typically 250 mA and a sink capability of typically 2.7 A. This permits fast turn-on and
turn-off of the power MOSFET for efcient operation. The output voltage of the driver is
limited to 10 V (typical). This high output voltage will drive all MOSFET brands to the
minimum on-state resistance.
During start-up conditions (VCC <Vstartup) and undervoltage lock-out the driver output
voltage is actively pulled low.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TEA1762T | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:GreenChip synchronous rectifier controller |
| TEA1762T/N2,118 | 功能描述:DC/DC 开关控制器 SYN Rectifier Controller 14-Pin RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TEA1762T/N2/DG,118 | 功能描述:DC/DC 开关控制器 3.5V 5mA 10% RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TEA1771 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:GreenChip PC primary control IC |
| TEA1771T/N2,518 | 功能描述:DC/DC 开关控制器 TEA1771T/SO24/REEL13DP//N2 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
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