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| 型号： | TEA1733CT/N1,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 6/20页 |
| 文件大小： | 0K |
| 描述： | IC CTLR SMPS FLYBACK OPP 8SOIC |
| 标准包装： | 2,500 |
| 系列： | GreenChip™ |
| 输出隔离： | 隔离 |
| 频率范围： | 62kHz ~ 71kHz |
| 输入电压： | 12 V ~ 30 V |
| 输出电压： | 9 V ~ 12 V |
| 功率（瓦特）： | 500mW |
| 工作温度： | -40°C ~ 150°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
NXP Semiconductors
V CC
TEA1733CT
GreenChip SMPS control IC
V startup
V th(UVLO)
soft start
soft start
ISENSE
V det(H)(VINSENSE)
VINSENSE
V det(H)(PROTECT)
PROTECT
V det(L)(PROTECT)
4.5 V
1.2 V
OPTIMER
V O
(power down)
charging VCC
capacitor
starting
converter
normal
operation
protection
restart
014aaa929
Fig 4.
Start-up sequence, normal operation and restart sequence
When the voltage on pin VCC drops below the V th(UVLO) level during normal operation, the
controller stops switching and enters Restart mode. In Restart mode, the driver output is
disabled and the VCC pin voltage is recharged via resistor R3 to the rectified mains.
7.3 Supply management
All internal reference voltages are derived from a temperature compensated on-chip band
gap circuit. Internal reference currents are derived from a trimmed and temperature
compensated current reference circuit.
7.4 Input voltage detection (VINSENSE pin)
In a typical application pin VINSENSE detects the mains input voltage. Switching does not
take place until the voltage on VINSENSE has reached the V start(VINSENSE) voltage
(typically 0.94 V).
When the VINSENSE voltage drops below V det(L)(VINSENSE) (typically 0.72 V) or exceeds
V det(H)(VINSENSE) (typically 3.52 V), the converter stops switching and performs a restart.
If pin VINSENSE is left open or disconnected, the pin is pulled up by the internal 20 nA
(typical) current source to reach the V det(H)(VINSENSE) level. This triggers restart protection.
An internal clamp of 5.2 V (typical) protects this pin from overvoltages.
7.5 Protection input (PROTECT PIN)
Pin PROTECT is a general-purpose input pin, which can be used to trigger the restart
protection. The converter is stopped when the voltage on this pin is pulled above
V det(H)(PROTECT) (typically 0.8 V) or below V det(L)(PROTECT) (typically 0.5 V). A current of
32 ? A (typical) flows out of the chip when the pin voltage is at the V det(L)(PROTECT) level. A
current of 107 ? A (typical) flows into the chip when the pin voltage is at the
V det(H)(PROTECT) level.
TEA1733CT
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 16 July 2013
? NXP B.V. 2013. All rights reserved.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TEA1733LT | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:GreenChip SMPS control IC |
| TEA1733LT/N1,118 | 功能描述:DC/DC 开关控制器 75W 72% 66.5KHz 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 |
| TEA1733LT/N2,118 | 功能描述:DC/DC 开关控制器 GREENCHIP SMPS CONTROL IC 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 |
| TEA1733MT | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:GreenChip SMPS control IC Adjustable overpower time-out |
| TEA1733MT/N2,118 | 功能描述:DC/DC 开关控制器 GREENCHIP SMPS CONTROL IC 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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