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参数资料
| 型号： | TEA1733CT/N1,118 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 9/20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
2
1.7
I ISENSE
( μ A)
TEA1733CT
GreenChip SMPS control IC
0.68
1
2
3
4
V VINSENSE (V)
014aaa933
Fig 8.
Overpower compensation using pins VINSENSE and ISENSE
7.11 Soft start-up (ISENSE pin)
To prevent audible noise during start-up or a restart condition, a soft start is made. Before
the converter starts, the soft start capacitor C6 (see Figure 3 ) on the ISENSE pin is
charged. When the converter starts switching, the primary peak current slowly increases
as the soft start capacitor discharges through the soft start resistor (R6, see Figure 3 ).
The soft start time constant is set by the soft start capacitor value chosen. The soft start
resistor value must also be taken into account, but this value is typically defined by the
overpower compensation (see Section 7.10 ).
7.12 Low-power operation
In low-power operation switching losses are reduced by lowering the switching frequency.
The converter switching frequency is reduced and the peak current is set to 25 % of the
maximum peak current (see Figure 6 and Figure 9 ).
f sw
(kHz)
switching
frequency
1
2
V CTRL (V)
014aaa934
Fig 9.
Frequency control
7.13 Driver (DRIVER pin)
The driver circuit to the gate of the power MOSFET has a current sourcing capability of
typically ? 300 mA and a current sink capability of typically 750 mA. This allows for a fast
turn-on and turn-off of the power MOSFET for efficient operation.
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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