參數(shù)資料
型號(hào)： L6562ATN
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, PDIP8
封裝： ROHS COMPLIANT, DIP-8
文件頁(yè)數(shù)： 8/25頁(yè)
文件大小： 488K
代理商： L6562ATN
Application information
L6562AT
16/25
7.5
Comparison between the L6562AT and the L6562
The L6562AT is not a direct drop-in replacement of the L6562, even if both have the same
pin-out. One function (Disable) has been relocated.
Table 2 compares the two devices, i.e. those parameters that may result in different values
of the external components. The parameters that have the most significant impact on the
design, i.e. that definitely require external component changes when converting an L6562-
based design to the L6562AT, are highlighted in bold.
The lower value (-36%) for the clamp level of the current sense reference voltage allows the
use of a lower sense resistor for the same peak current, with a proportional reduction of the
associated power dissipation. Essentially, the advantage is the reduction of the power
dissipated in a single point (hotspot), which is a considerable benefit in applications where
heat removal is critical, e.g. in adapters enclosed in a sealed plastic case. The lower value
for the dynamic OVP triggering current allows the use of a higher resistance value (+48%)
for the upper resistor of the divider sensing the output voltage of the PFC stage (keeping the
same overvoltage level) with no significant increase of noise sensitivity. This reduction goes
in favor of standby consumption in applications required to comply with energy saving
regulations.
Table 6.
L6562AT vs L6562
Parameter
L6562
L6562AT
IC turn-on and turn-off thresholds (typ.)
12/9.5 V
12.5/10 V
Turn-off threshold spread (max.)
±0.8 V
±0.5 V
IC consumption before start-up (max.)
70 uA
60 uA
Multiplier gain (typ.)
0.6
0.38
Current sense reference clamp (typ.)
1.7 V
1.08 V
Current sense propagation delay (delay-to-output) (typ.)
200 ns
175 ns
Dynamic OVP triggering current (typ.)
40 A
27 A
ZCD arm/trigger/clamp thresholds (typ.)
2.1/1.4/0.7 V
1.4/0.7/0 V
Enable threshold (typ.)
0.3 V (1)
1.
Function located on pin 5 (ZCD)
0.45 V (2)
2.
Function located on pin 1 (INV)
Gate-driver internal drop (max.)
2.6 V
2.2 V
Leading-edge blanking on current sense
No
Yes
Reference voltage accuracy (overall)
2.4%
1.8%
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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L6562DTR 功能描述:功率因數(shù)校正 IC Trans Mode PFC Cont RoHS:否 制造商:Fairchild Semiconductor 開(kāi)關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
L6562DTR☞㊣☜ 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:深創(chuàng)輝科技L6562DTR☞㊣☜現(xiàn)貨
L6562N 功能描述:功率因數(shù)校正 IC Trans Mode PFC Cont RoHS:否 制造商:Fairchild Semiconductor 開(kāi)關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
L6563 功能描述:功率因數(shù)校正 IC POWER SUPPLY RoHS:否 制造商:Fairchild Semiconductor 開(kāi)關(guān)頻率:300 KHz 最大功率耗散: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Reel
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