參數(shù)資料
型號(hào): TOP247F
英文描述: SMPS Controller
中文描述: 開關(guān)電源控制器
文件頁(yè)數(shù): 39/52頁(yè)
文件大?。?/td> 457K
代理商: TOP247F
TOP242-250
39
H
9/02
Conditions
(Unless Otherwise Specified)
See Figure 53
SOURCE = 0 V
;
T
J
= -40 to 125
°
C
Min
Typ
Max
Parameter
Symbol
Units
SUPPLY VOLTAGE CHARACTERISTICS
36
5.60
5.85
6.10
±
50
1.0
1.6
2.5
1.2
2.2
3.2
1.3
2.4
3.65
0.3
0.6
1.3
V
V
ppm/
°
C
mA
V
C(SHUNT)
l
CD1
l
CD2
See Note E
I
C
= 4 mA
Output
MOSFET Disabled
V
X
, V
L
, V
M
= 0 V
NOTES:
A. For specifications with negative values, a negative temperature coefficient corresponds to an increase in
magnitude with increasing temperature, and a positive temperature coefficient corresponds to a decrease in
magnitude with increasing temperature.
B. Guaranteed by characterization. Not tested in production.
C. For externally adjusted current limit values, please refer to Figure 55 (Current Limit vs. External Current Limit
Resistance) in the Typical Performance Characteristics section.
D. Breakdown voltage may be checked against minimum BV
DSS
specification by ramping the DRAIN pin voltage up to
but not exceeding minimum BV
DSS
.
E. It is possible to start up and operate
TOPSwitch-GX
at DRAIN voltages well below 36 V. However, the
CONTROL pin charging current is reduced, which affects start-up time, auto-restart frequency, and auto-restart
duty cycle. Refer to Figure 67, the characteristic graph on CONTROL pin charge current (I
C
) vs. DRAIN voltage
for low voltage operation characteristics.
DRAIN Supply
Voltage
Shunt Regulator
Voltage
Shunt Regulator
Temperature Drift
Control Supply/
Discharge Current
Output
MOSFET Enabled
V
X
, V
L
, V
M
= 0 V
TOP242-245
TOP246-249
TOP250
OUTPUT
Rise Time
Fall Time
t
R
t
F
Measured in a Typical
Flyback Converter Application
100
ns
50
ns
相關(guān)PDF資料
PDF描述
TOP247R-TL SMPS Controller
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TOP248R-TL SMPS Controller
TOP249F SMPS Controller
TOP249R-TL SMPS Controller
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