参数资料
| 型号： | MC44605PG |
| 厂商： | ON Semiconductor |
| 文件页数： | 5/20页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBK ISO PWM 16DIP |
| 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： | 80% |
| 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： | 是 |
| 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： | MC44605PGOS |
MC44605
ELECTRICAL CHARACTERISTICS (V CC and V C = 12 V, R ref = 10 k W , C T = 2.2 nF, for typical values T A = 25 ° C, for
min/max values T A = ? 25 ° to +85 ° C unless otherwise noted.) (Note 5)
Characteristic
Pin #
Symbol
Min
Typ
Max
Unit
REFERENCE SECTION
Reference Output Voltage (V CC = 10 V to 15 V)
Reference Current Range (I ref = V ref /R ref , R = 5.0 k to 25 k W )
Reference Voltage Over I ref Range
16
16
V ref
I ref
D V ref
2.4
? 500
? 40
2.5
?
?
2.6
? 100
40
V
m A
mV
DEMAGNETIZATION DETECTION SECTION (Note 6)
Demagnetization Detect Input
Demagnetization Comparator Threshold (V pin9 Decreasing)
Propagation Delay (Input to Output, Low to High)
Input Bias Current (V demag = 65 mV)
Minimum Off ? Time when the pin 8 is grounded
Negative Clamp Level (I demag = ? 2.0 mA)
Positive Clamp Level (I demag = +2.0 mA)
8
V demag ? th
t PLH(In/Out)
I demag ? lb
T DEM ? GND
CLVL ? neg
CLVL ? pos
50
?
? 0.5
1.5
? 0.50
0.50
65
0.5
?
3.0
? 0.38
0.72
80
?
?
4.5
? 0.25
0.85
mV
m s
m A
m s
V
V
SOFT ? START SECTION (Note 7)
Ratio Charge Current/I ref (T A = ? 25 ° to +85 ° C)
Discharge Current (V soft ? start = 1.0 V)
Clamp Level
Circuit Inhibition Threshold (Note 8)
V CS Soft ? Start Clamp Level (R soft ? start = 5 k W )
I ss ? ch /I ref
I discharge
V SS ? CLVL
V SSinhi
V CSsoft ? start
0.37
1.5
2.2
30
0.45
?
5.0
2.4
?
0.5
0.43
?
2.6
150
0.55
?
mA
V
mV
V
OVERVOLTAGE SECTION
Propagation Delay (V CC > 18.1 V to V out Low)
Protection Level on V CC (T A = ? 25 ° to +85 ° C)
T PHL(In/Out)
V CC prot
1.0
15.9
?
?
4.0
18.1
m s
V
EHT OVP SECTION (Note 9)
Negative Clamp Level (I synch ? in = ? 2.0 mA)
EHT OVP Input Threshold
NEG ? SYN
C
V ref
? 0.65
7.0
? 0.5
7.4
? 0.35
7.8
V
V
EHT OVP Input Bias Current (V EHT OVP(pin 9) = 0 V)
9
I EHTOVP
? 5.0
?
0
m A
WINDING SHORT CIRCUIT DETECTION SECTION
WSCD Threshold with I pin15 = 200 m A
Vshift
70
100
120
mV
MPL & OHD SECTION
MPL Parameter (Note 10)
MPL Comparator Threshold (Note 11)
OHD Parameter (Note 12)
OHD Comparator Threshold (Note 13)
Γ MPL
V MPL ? th
Γ OHD
V OHD ? th
0.185
2.4
1.15
2.4
0.240
2.5
1.50
2.5
0.295
2.6
1.85
2.6
V ? 1
V
V ? 1
V
5. Adjust V CC above the startup 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.
6. This function can be inhibited by connecting pin 8 to GND. In this case, there is a minimum off ? time equal to T DEM ? GND .
7. The MC44605 can be shut down by connecting soft ? start pin (pin 11) to GND.
8. The circuit is shutdown if the soft ? start pin voltage is lower than this level.
9. This function can be inhibited by connecting pin 9 to GND. In this case, the synchronization block is inhibited too and the MC44605 works
in free mode.
10. This parameter is defined in the MPL §. This parameter is obtained by measuring the MPL pin average current and dividing this result by the
corresponding squared V CS , the measured frequency value and the C T value deducted from the measured frequency value.
Measurement conditions: V Feedback(pin 14) = 2.3 V, V soft ? start(pin 11) = 0.5 V and pins 7, 8, and 9 connected to GND (the working frequency
is typically equal to 18 kHz ? R ref = 10 k W " 1%, C T = 2.2 nF).
11. The MPL comparator output is Dis MPL .
12. This parameter is defined in the OHD §. This parameter is obtained by measuring the OHD pin average current and dividing this result by
the corresponding squared V CS value and multiplying it by the R ref value.
Measurement conditions: V Feedback(pin 14) = 2.3 V, V soft ? start(pin 11) = 0.5 V and pins 7, 8, and 9 connected to GND (the working frequency
is typically equal to 18 kHz ? R ref = 10 k W " 1%, C T = 2.2 nF).
13. The OHD comparator output is Dis OHD .
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