参数资料
型号: TEA1733LT/N1,118
厂商: NXP Semiconductors
文件页数: 8/21页
文件大小: 0K
描述: IC CTLR SMPS SW SO8
标准包装: 1
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: 标准包装
相关产品: 732-2243-ND - TRANS FLYBACK NXP TEA1733 4.0MH
732-2242-ND - TRANS FLYBACK NXP TEA1733 2.2MH
其它名称: 568-5346-6
NXP Semiconductors
I O
V O
V ISENSE
V OPTIMER
TEA1733LT
GreenChip SMPS control IC
400 mV
V prot(OPTIMER)
high load
normal
load
high load
protection
014aaa968
Fig 6.
Overpower delay: latched
7.9 Current mode control (ISENSE pin)
Current mode control is used for its good line regulation.
The primary current is sensed by the ISENSE pin across an external resistor R9 (see
Figure 3 ) and compared with an internal reference voltage. The internal reference voltage
is proportional to the CTRL pin voltage (see Figure 7 ).
0.6
V sense(max)
(V)
0.4
frequency
014aaa931
0.2
0
reduction
0
1
2
3
4
V CTRL (V)
Fig 7.
Peak current control using pin ISENSE
Leading edge blanking prevents false triggering due to capacitive discharge when
switching on the external power switch (see Figure 8 ).
TEA1733LT
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 8 — 16 July 2013
? NXP B.V. 2013. All rights reserved.
8 of 21
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