参数资料
| 型号： | MC44604PG |
| 厂商： | ON Semiconductor |
| 文件页数： | 5/22页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBACK PWM 16-DIP |
| 产品变化通告： | Product Obsolescence 19/Dec/2008 |
| 标准包装： | 500 |
| 系列： | GreenLine™ |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 250kHz |
| 占空比： | 82% |
| 电源电压： | 10 V ~ 15 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -25°C ~ 85°C |
| 封装/外壳： | 16-DIP（0.300"，7.62mm） |
| 包装： | 管件 |
| 其它名称： | MC44604PGOS |
MC44604
ELECTRICAL CHARACTERISTICS (V CC and V C = 12 V [Note 8], R ref = 10 k W , C T = 820 pF, for typical values T A = 25 ° C,
for min/max values T A = ? 25 ° to +85 ° C [Note 9], unless otherwise noted.)
Characteristic
Pin #
Symbol
Min
Typ
Max
Unit
CURRENT SENSE SECTION
Maximum Current Sense Input Threshold
(V Feedback (pin14) = 2.3 V and V foldback (pin6) = 1.2 V)
Input Bias Current
7
7
V cs ? th
I cs ? ib
0.93
? 10
0.96
? 2.0
1.00
?
V
m A
Propagation Delay (Note 10)
in Normal Mode
in Standby Mode
t CS ? NM
t CS ? stby
?
?
120
120
200
200
ns
OVERVOLTAGE SECTION
Protection Threshold Level on V OVP
Propagation Delay (V OVP > 2.58 V to V out Low)
Protection Level on V CC
T A = 0 ° to +70 ° C
T A = ? 25 ° to +85 ° C
Input Resistance
T A = 0 ° to +70 ° C
T A = ? 25 ° to +85 ° C
6
V OVP ? th
V CC prot
?
2.42
1.0
16.1
15.9
1.5
1.4
2.5
?
17
?
2.0
?
2.58
3.0
17.9
18.1
3.0
3.4
V
m s
V
k W
FOLDBACK SECTION (Note 11)
Current Sense Voltage Threshold (V foldback (pin5) = 0.9 V)
Foldback Input Bias Current (V foldback (pin5) = 0 V)
5
5
V cs ? th
I foldback ? lb
0.84
? 6.0
0.88
? 2.0
0.89
?
V
m A
CLAMP ERROR AMPLIFIER INPUT
Clamp Level (@ l = 30 mA)
12
Vcl
4.5
4.7
4.9
V
STANDBY PULSED MODE SECTION
Standby Initialization Current Ratio (S1 closed)
Minimum Initialization Current Pulse Width (Note 12)
Standby On Detection Current Ratio
Standby Regulation Current Ratio
Standby Bias Current (S1 and S2 open;
0 V t V pin15 t V stup ? th ) (Note 13)
15
15
15
15
I init /I ref
T init
I det /I ref
I reg /I ref
I stby ? ib
126
?
0.34
18
? 1.0
140
?
0.38
20.5
?
154
1.0
0.42
23
2.0
?
m s
?
?
m A
STANDBY CURRENT SET
Peak Standby Current Setting Ratio
9
?
T A = 0 ° to +70 ° C
T A = ? 25 ° to +85 ° C
I pk ? stby /I ref
?
0.37
0.36
0.4
0.4
0.43
0.44
Standby Current Sense Threshold Ratio (Note 14)
7
V pin9 /V cs ? st
2.4
2.6
2.9
?
TOTAL DEVICE
Power Supply Current
Startup (Note 13)
Operating T A = ? 25 ° to +85 ° C (Note 9)
Power Supply Zener Voltage (I CC = 25 mA)
Thermal Shutdown
I CC
V Z
?
?
16
18.5
?
0.3
20
?
155
0.45
24
?
?
mA
V
° C
8. Adjust V CC above the startup threshold before setting to 12 V.
9. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
10. Current Sense Input to Output at V TH of MOS transistor = 3.0 V.
11. This function can be inhibited by connecting pin 5 to V CC .
12. This is the minimum time during which the pin 15 current must be higher than I init to enable the detection of the transition normal to standby mode.
13. Tested using V CC = 6.0 V, 9.0 V, 13.5 V, the MC44604 being off.
14. Tested using V pin9 = 0.2 V, 0.4 V, 0.6 V, 0.8 V, 1.0 V.
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