參數(shù)資料
型號: SP6123A
英文描述: Low Voltage, Synchronous Step-Down PWM Controller Ideal for 2A to 10A, Small Footprint, DC-DC Power Converters
中文描述: 低,同步降壓電壓降壓PWM控制器,適合2A至10A條,占地面積小,DC - DC電源轉(zhuǎn)換器
文件頁數(shù): 7/18頁
文件大?。?/td> 154K
代理商: SP6123A
7
Date: 5/25/04
SP6123 Low Voltage, Synchronous Step Down PWM Controller Copyright 2004 Sipex Corporation
A more detailed description of the waveform is shown below.
Internal SSTART
passes V(V
FB
), COMP
pops to ~ internal
SSTART voltage +0.7V
Internal SSTART rises until
~ V
CC
-1V, then gives command
to attempt RESTART
COMP Clamps
~ 3V
After pop, COMP
retains internal
SSTART slope
ENABLE
Part
Attempt
RESTART
5
μ
A PULLUP slope to 0.3V;
35
μ
A PULLUP to 0.7V
Overcurrent Detected
G
H
Turns Off
(Fault Mode Enabled)
G
H
COMP
SP6123 OVER CURRENT (HICCUP MODE)
Test Conditions
V
FB
= 0.7V
V
CC
= 5.0V
BST = 5.0V
SWN - tied to GND through 1k Resistor
COMP – released from GND
OPERATION
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