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参数资料
| 型号： | TEA1733P/N1,112 |
| 厂商： | NXP Semiconductors |
| 文件页数： | 6/21页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR SMPS GREEN OVP 8-DIP |
| 标准包装： | 50 |
| 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-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-DIP |
| 包装： | 管件 |
| 相关产品： | 732-2243-ND - TRANS FLYBACK NXP TEA1733 4.0MH 732-2242-ND - TRANS FLYBACK NXP TEA1733 2.2MH |
NXP Semiconductors
V CC
TEA1733P
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 the mains input voltage can be detected by the VINSENSE pin.
Switching will 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 Protect input (PROTECT pin)
Pin PROTECT is a general purpose input pin, which can be used to switch off the
converter (latched 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.
TEA1733P
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 15 July 2013
? NXP B.V. 2013. All rights reserved.
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相关代理商/技术参数 |
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|---|---|
| TEA1733T | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:GreenChip SMPS control IC |
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