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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)： | 7/21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
15 of 21
NXP Semiconductors
TEA1733LT
GreenChip SMPS control IC
[1]
The clamp voltage on the PROTECT pin is lowered when the IC is in power-down (latched or restart protection).
[2]
Ncy(sw)dmax is only valid for TEA1733LT/N2. TEA1733LT/N1 does not count the number of switching cycles with maximum duty cycle.
11. Application information
A power supply with the TEA1733LT is a flyback converter operating in Continuous
conduction mode (See Figure 12).
Capacitor C5 buffers the IC supply voltage, which is powered via resistor R3 at start-up
and via the auxiliary winding during normal operation. Sense resistor R9 converts the
current through the MOSFET S1 into a voltage on pin ISENSE. The value of R9 defines
the maximum primary peak current on MOSFET S1. Resistor R7 reduces the peak
current to capacitor C5.
In the example shown in Figure 12, the PROTECT pin is used for OVP and OTP. The
OVP level is set by diode Z1 to VCC = 25.8 V. The OTP level is set by Negative
Temperature Coefficient (NTC) resistor R4. The VINSENSE pin is used for mains voltage
detection and resistors R1 and R2 set the start voltage to about 80 V (AC). The overpower
protection time is defined by capacitor C4 is set at 60 ms.
The restart time is defined by capacitor C4 and resistor R8 at 0.5 s.
Resistor R6 and capacitor C6 define the soft start time. Resistor R5 prevents the soft start
capacitor C6 from being charged during normal operation caused by negative voltage
spikes across the current sense resistor R9.
Capacitor C3 reduces noise on the CTRL pin.
Soft start (pin ISENSE)
Istart(soft)
soft start current
63
55
47
μA
Vstart(soft)
soft start voltage
VCTRL = 4 V; enable
voltage
-Vsense(max)
-V
Rstart(soft)
soft start resistance
12
-
k
Ω
Driver (pin DRIVER)
Isource(DRIVER)
source current on pin
DRIVER
VDRIVER =2V
-
0.3
0.25
A
Isink(DRIVER)
sink current on pin DRIVER
VDRIVER = 2 V
0.25
0.3
-
A
VDRIVER =10V
0.6
0.75
-
A
VO(DRIVER)max
maximum output voltage on
pin DRIVER
9
10.5
12
V
Temperature protection
Tpl(IC)
IC protection level
temperature
130
140
150
°C
Table 5.
Characteristics …continued
Tamb =25 °C; VCC = 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into
the IC; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
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| 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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