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參數(shù)資料
| 型號： | MC44605 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | High Safety, Latched Mode, GreenLine PWM Controller for (Multi)Synchronized Applications |
| 中文描述： | 高安全性，鎖存模式，二七二三六七六七的PWM控制器（同步多應(yīng)用） |
| 文件頁數(shù)： | 4/20頁 |
| 文件大?。?/td> | 328K |
| 代理商： | MC44605 |
MC44605
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS
(VCC and VC = 12 V, Rref = 10 k
, CT = 2.2 nF, for typical values TA = 25
°
C, for min/max
values TA = –25
°
to +85
°
C unless otherwise noted.) (Note 1.)
Characteristic
Pin #
Symbol
Min
Typ
Max
Unit
ERROR AMPLIFIER SECTION
Voltage Feedback Input (VE/A out = 2.5 V)
Input Bias Current (VFB = 2.5 V)
Open Loop Voltage Gain (VE/A out = 2.0 V to 4.0 V)
Unity Gain Bandwidth
TJ = 25
°
C
TA = –25
°
to +85
°
C
Voltage Feedback Input Line Regulation (VCC = 10 V to 15 V)
Output Current
Sink (VE/A out = 1.5 V, VFB = 2.7 V)
TA = –25
°
to +85
°
C
Source (VE/A out = 5.0 V, VFB = 2.3 V)
TA = –25
°
to +85
°
C
Output Voltage Swing
High State (IE/A out (source) = 0.5 mA, VFB = 2.3 V)
Low State (IE/A out (sink) = 0.33 mA, VFB = 2.7 V)
CURRENT SENSE SECTION
Maximum Current Sense Input Threshold
(VFeedback (pin14) = 2.3 V and VSoft–Start (pin11) = 1.2 V)
Input Bias Current
14
VFB
IFB–ib
AVOL
BW
2.4
2.5
2.6
V
14
–2.0
–0.6
–
μ
A
65
70
–
dB
MHz
–
–
–
–
–
5.5
VFBline–reg
–10
–
10
mV
13
mA
ISink
2.0
12
–
ISource
–2.0
–
–0.2
13
V
VOH
VOL
5.5
–
6.5
1.0
7.5
1.1
7
Vcs–th
0.96
1.0
1.04
V
7
Ics–ib
–10
–2.0
–
μ
A
Propagation Delay (Current Sense Input to Output at VTH of
MOS transistor = 3.0 V)
tPLH(In/Out)
–
120
200
ns
OSCILLATOR AND SYNCHRONIZATION SECTION
Frequency (TA = –25
°
to +85
°
C)
Frequency Change with Voltage (VCC = 10 V to 15 V)
Frequency Change with Temperature (TA = –25
°
to +85
°
C)
Ratio Charge Current/Reference Current (TA = –25
°
to +85
°
C)
Free Mode Oscillator Ratio = Idischarge/(Idischarge + Icharge)
Synchronization Input Threshold Voltage
FOSC
FOSC/
V
FOSC/
T
Icharge/Iref
D
16
–
20
kHz
–
0.05
–
%/V
–
0.05
–
%/
°
C
0.39
–
0.48
–
72
75
78
%
9
Vsyncth
NEG–SYNC
–250
–200
–150
mV
Negative Clamp Level (Isyncth–in = 2.0 mA)
UNDERVOLTAGE LOCKOUT SECTION
–0.65
–0.5
–0.34
V
Start–up Threshold
1
Vstup–th
Vdisable1
13.6
14.5
15.4
V
Disable Voltage After Threshold Turn–On (UVLO 1)
(TA = –25
°
to +85
°
C)
Disable Voltage After Threshold Turn–On (UVLO 2)
(TA = –25
°
to +85
°
C)
1. Adjust VCC above the start–up threshold before setting to 12 V. Low duty cycle pulse techniques are used during test to maintain junction
temperature as close to ambient as possible.
1
8.3
–
9.6
V
1
Vdisable2
7.0
7.5
8.0
V
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| MC44605_06 | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:High Safety, Latched Mode, GreenLine TM PWM Controller for (Multi) Synchronized Applications |
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