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參數(shù)資料
| 型號(hào)： | MC44605P |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | RW-S Series - Econoline Regulated DC-DC Converters; Input Voltage (Vdc): 05V; Output Voltage (Vdc): 05V; Power: 2W; DIP24 Low Profile Miniature Package; 1kVDC Isolation; Feedback Regulated Output; 2:1 Wide Range Voltage Input; Continuous Short Circuit Protection; Less than 7mm Height; SMD Pinning Option; Efficiency to 87% |
| 中文描述： | 0.75 A SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數(shù)： | 5/20頁 |
| 文件大小： | 328K |
| 代理商： | MC44605P |
MC44605
http://onsemi.com
5
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
REFERENCE SECTION
Reference Output Voltage (VCC = 10 V to 15 V)
Reference Current Range (Iref = Vref/Rref, R = 5.0 k to 25 k
)
Reference Voltage Over Iref Range
DEMAGNETIZATION DETECTION SECTION (Note 2.)
Demagnetization Detect Input
Demagnetization Comparator Threshold (Vpin9 Decreasing)
Propagation Delay (Input to Output, Low to High)
Input Bias Current (Vdemag = 65 mV)
Minimum Off–Time when the pin 8 is grounded
16
Vref
Iref
Vref
2.4
2.5
2.6
V
16
–500
–
–100
μ
A
–40
–
40
mV
8
Vdemag–th
tPLH(In/Out)
Idemag–lb
TDEM–GND
CLVL–neg
50
–
–0.5
65
0.5
–
80
–
–
mV
μ
s
μ
A
μ
s
1.5
3.0
4.5
Negative Clamp Level (Idemag = –2.0 mA)
Positive Clamp Level (Idemag = +2.0 mA)
SOFT–START SECTION (Note 3.)
Ratio Charge Current/Iref (TA = –25
°
to +85
°
C)
Discharge Current (Vsoft–start = 1.0 V)
Clamp Level
–0.50
–0.38
–0.25
V
CLVL–pos
0.50
0.72
0.85
V
Iss–ch/Iref
Idischarge
VSS–CLVL
VSSinhi
VCSsoft–start
0.37
1.5
–
0.43
–
–
5.0
mA
2.2
2.4
2.6
V
Circuit Inhibition Threshold*
30
–
150
mV
VCS Soft–Start Clamp Level (Rsoft–start = 5 k
)
*The circuit is shutdown if the Soft–Start pin voltage is lower than this level.
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.
2. This function can be inhibited by connecting pin 8 to GND. In this case, there is a minimum off–time equal to TDEM–GND.
3. The MC44605 can be shut down by connecting Soft–Start pin (pin 11) to Ground.
0.45
0.5
0.55
V
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