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參數(shù)資料
| 型號： | TEA1733LT/N2 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING CONTROLLER, 71 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | 3.90 MM, PLASTIC, MS-012, SOT96-1, SOP-8 |
| 文件頁數(shù)： | 20/21頁 |
| 文件大?。?/td> | 215K |
| 代理商： | TEA1733LT/N2 |
TEA1733LT
All information provided in this document is subject to legal disclaimers.
NXP B.V. 2011. All rights reserved.
Product data sheet
Rev. 6 — 25 January 2011
8 of 21
NXP Semiconductors
TEA1733LT
GreenChip SMPS control IC
The PROTECT input can be used to create overvoltage detection and OTP functions.
A small capacitor can be connected to the pin if the protections on this pin are not used.
An internal clamp of 4.1 V (typical) protects this pin from overvoltages.
7.6 Duty cycle control (CTRL pin)
The output power of the converter is regulated by the CTRL pin. This pin is connected to
an internal 5.4 V supply using an internal 7 k
Ω resistor.
The CTRL pin voltage sets the peak current which is measured using the ISENSE pin
(see Section 7.10). At a low output power the switching frequency is also reduced (see
Section 7.12). The maximum duty cycle is limited to 72 % (typical).
TEA1733LT/N1 does not trigger any protection when maximum duty cycle is reached. In
TEA1733LT/N2, after eight consecutive converter strokes at the maximum duty cycle,
restart protection is activated. Typically, this will happen when the mains input supply
voltage is removed.
7.7 Slope compensation (CTRL pin)
A slope compensation circuit is integrated in the IC for CCM. Slope compensation
guarantees stable operation for duty cycles greater than 50 %.
7.8 Overpower timer (OPTIMER pin)
If the OPTIMER pin is connected to capacitor C4 (see Figure 4), a temporary overload
400 mV, the IIO(OPTIMER) current (11 μA typical) is sourced from the OPTIMER pin. If the
voltage on the OPTIMER pin reaches the Vprot(OPTIMER) voltage (2.5 V typical) the
OverPower Protection (OPP) is triggered (see Figure 6).
TEA1733LT: when the Vprot(OPTIMER) voltage is reached, it is latched in the off state
Fig 6.
Overpower delay
014aaa930
VOPTIMER
VISENSE
VO
400 mV
protection
high load
normal
load
Vprot(OPTIMER)
IO
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TEA1733MT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GreenChip SMPS control IC Adjustable overpower time-out |
| TEA1733MT/N2,118 | 功能描述:DC/DC 開關(guān)控制器 GREENCHIP SMPS CONTROL IC RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TEA1733P/N1,112 | 功能描述:DC/DC 開關(guān)控制器 GREENCHIP SMPS CONTROL IC RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關(guān)頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風(fēng)格: 封裝 / 箱體:CPAK |
| TEA1733T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:GreenChip SMPS control IC |
| TEA1733T/DB/65W,598 | 制造商:NXP Semiconductors 功能描述:- Boxed Product (Development Kits) 制造商:NXP Semiconductors 功能描述:TEA1733 65W reference design 制造商:NXP Semiconductors 功能描述:TEA1733T/DB/65W,598 |
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