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参数资料
| 型号： | GM3843AD8T |
| 厂商： | American Power Management Inc. |
| 英文描述： | HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS |
| 中文描述： | 高性能电流模式PWM控制器 |
| 文件页数： | 16/19页 |
| 文件大小： | 304K |
| 代理商： | GM3843AD8T |
6
G
M
3
8
4
2
A
,
G
M
3
8
4
3
A
,
G
M
3
8
4
A
,
G
M
3
8
4
5
A
ELECTRICAL CHARACTERISTICS (Continued)
(T = 0°C to 70°C, *V
=15V, C =3.3nF, R =10kW, unless otherwise specified )
ACC
T
TYP
MAX
UNIT
CHARACTERISTICS
TEST CONDITIONS
MIN
SYMBOL
PWM Section
Total Standby Current
Maximum Duty Cycle
Minimum Duty Cycle
Zener Voltage
Operating Supply Current
Start-Up Current
D(MAX)
D(MIN)
VZ
ICC(OPR)
IST
GM3842A, GM3843A
GM3844A, GM3845A
95
47
97
48
100
50
0
17
0.3
%
V
mA
V
=
=0V
PIN3
VPIN2
I
= 25mA
CC
30
38
13
0.17
* Adjust V
above the Startup threshold before setting to 15 V.
CC
Note1: Parameter measured at trip point of latch with V
= 0.
PIN2
Note2: Gain defined as A=DV
/ DV
; 0
V
0.8V
PIN1
PIN3
Note3: These parameters, although guaranteed, are not 100% tested in production
TYPICAL PERFORMANCE CHARACTERISTICS
50
20
10
1
2
5
10
20
30
50
100
200 300 500
RT
(KW)
fosc
(kHz)
V
= 15V
CC
T =25°C
A
Figure 1. Timing Resistor vs. Oscillator Frequency
C = 1000pF
T
C = 200pF
T
C = 500pF
T
C = 10pF
T
C = 5nF
T
C = 2nF
T
C = 1nF
T
50
20
10
1
2
5
10
20
30
50
100
200 300 500
%
fosc
(kHz)
V
= 15V
CC
T =25°C
A
Figure 2. Output Dead-Time vs. Oscillator Frequency
C = 1000pF
T
C = 200pF
T
C = 5nF
T
C = 2nF
T
C = 1nF
T
C = 500pF
T
C = 10pF
T
30
3
%
GM3842A/ 43A/ 44A/ 45A
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相关代理商/技术参数 |
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|---|---|
| GM3843AS8R | 制造商:GAMMA 制造商全称:GAMMA 功能描述:CURRENT MODE PWM CONTROLLER |
| GM3843AS8T | 制造商:GAMMA 制造商全称:GAMMA 功能描述:HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS |
| GM3844A | 制造商:GAMMA 制造商全称:GAMMA 功能描述:HIGH PERFORMANCE CURRENT MODE PWM CONTROLLERS |
| GM3844AD8T | 制造商:GAMMA 制造商全称:GAMMA 功能描述:CURRENT MODE PWM CONTROLLER |
| GM3844AS8R | 制造商:GAMMA 制造商全称:GAMMA 功能描述:CURRENT MODE PWM CONTROLLER |
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