參數(shù)資料
型號(hào)： L6591TR
廠商： STMICROELECTRONICS
元件分類： 穩(wěn)壓器
英文描述： SWITCHING CONTROLLER, PDSO16
封裝： ROHS COMPLIANT, SOP-16
文件頁(yè)數(shù)： 27/32頁(yè)
文件大小： 560K
代理商： L6591TR
Pin settings
L6591
4/32
Doc ID 14821 Rev 4
2
Pin settings
2.1
Connection
Figure 3.
Pin connection (top view)
2.2
Functions
VREF
OSC
LINE
ISEN
SS
COMP
DIS
PFC_STOP
HVSTART
BOOT
GND
LVG
Vcc
HVG
FGND
N.C.
6
5
1
3
4
7
2
8
11
12
16
14
13
10
15
9
Table 1.
Pin functions
Pin N.
Name
Function
1LINE
Line sensing input. The pin is to be connected to the high-voltage input bus
with a resistor divider. A voltage below 1.25 V shuts down the IC, lowers its
consumption and discharges the soft-start capacitor. IC’s operation is re-
enabled as the voltage exceeds 1.25 V. The comparator is provided with
current hysteresis: an internal 15 A current generator is ON as long as the
voltage applied at the pin is below 1.25 V and is OFF if this value is
exceeded. Bypass the pin with a capacitor to GND (#11) to reduce noise
pick-up. The pin is intended for either power-on sequencing in systems with
PFC, or brownout protection. Tie to Vcc (#9) with a 220 to 330 k
Ω resistor if
the function is not used.
2DIS
Latched device shutdown. Internally the pin connects a comparator that,
when the voltage on the pin exceeds 4.5 V, shuts the IC down and brings its
consumption to a value barely higher than before start-up. The information
is latched and it is necessary to recycle the input power to restart the IC: the
latch is removed as the voltage on the Vcc pin (#9) goes below the UVLO
threshold. Connect the pin to GND (#11) if the function is not used.
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