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參數資料
| 型號： | MC44604P |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | RV Series - Econoline Unregulated DC-DC Converters; Input Voltage (Vdc): 3.3V; Output Voltage (Vdc): 3.3V; Power: 2W; High Isolation 2W Converter; Approved for Medical Applications; EN and UL Safety Certificates; 6kVDC Isolation; Skinny DIP24 Package; Optional Continuous Short Circuit Protected; Fully Encapsulated; Very Low Isolation Capacitance |
| 中文描述： | 0.75 A SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDIP16 |
| 封裝： | PDIP-16 |
| 文件頁數： | 5/24頁 |
| 文件大?。?/td> | 341K |
| 代理商： | MC44604P |
MC44604
http://onsemi.com
5
ELECTRICAL CHARACTERISTICS
(VCC and VC = 12 V [Note 1.], Rref = 10 k
, CT = 820 pF, for typical values TA = 25
°
C,
for min/max values TA = –25
°
to +85
°
C [Note 2.], unless otherwise noted.)
Characteristic
Pin #
Symbol
Min
Typ
Max
Unit
CURRENT SENSE SECTION
Maximum Current Sense Input Threshold
(VFeedback (pin14) = 2.3 V and Vfoldback (pin6) = 1.2 V)
Input Bias Current
7
Vcs–th
0.93
0.96
1.00
V
7
Ics–ib
tCS–NM
tCS–stby
–10
–2.0
–
μ
A
Propagation Delay*
in Normal Mode
in Standby Mode
–
–
120
120
200
200
ns
*Current Sense Input to Output at VTH of MOS transistor = 3.0 V.
OVERVOLTAGE SECTION
Protection Threshold Level on VOVP
Propagation Delay (VOVP > 2.58 V to Vout Low)
Protection Level on VCC
TA = 0
°
to +70
°
C
TA = –25
°
to +85
°
C
Input Resistance
TA = 0
°
to +70
°
C
TA = –25
°
to +85
°
C
FOLDBACK SECTION (Note 3.)
Current Sense Voltage Threshold (Vfoldback (pin5) = 0.9 V)
Foldback Input Bias Current (Vfoldback (pin5) = 0 V)
CLAMP ERROR AMPLIFIER INPUT
Clamp Level (@ l = 30 mA)
6
VOVP–th
2.42
2.5
2.58
V
1.0
–
3.0
μ
s
VCC prot
V
16.1
15.9
17
–
17.9
18.1
–
k
1.5
1.4
2.0
–
3.0
3.4
5
Vcs–th
Ifoldback–lb
0.84
0.88
0.89
V
5
–6.0
–2.0
–
μ
A
12
Vcl
4.5
4.7
4.9
V
STANDBY PULSED MODE SECTION
Standby Initialization Current Ratio (S1 closed)
15
Iinit/Iref
Tinit
Idet/Iref
Ireg/Iref
Istby–ib
126
140
154
–
Minimum Initialization Current Pulse Width*
–
–
1.0
μ
s
Standby On Detection Current Ratio
15
0.34
0.38
0.42
–
Standby Regulation Current Ratio
15
18
20.5
23
–
Standby Bias Current (S1 and S2 open;
0 V
Vpin15
Vstup–th)**
* This is the minimum time during which the pin 15 current must be higher than Iinit to enable the detection of the transition normal to standby mode.
**Tested using VCC = 6.0 V, 9.0 V, 13.5 V, the MC44604 being off.
STANDBY CURRENT SET
Peak Standby Current Setting Ratio
TA = 0
°
to +70
°
C
TA = –25
°
to +85
°
C
Standby Current Sense Threshold Ratio*
*Tested using Vpin9 = 0.2 V, 0.4 V, 0.6 V, 0.8 V, 1.0 V.
TOTAL DEVICE
Power Supply Current
Startup*
Operating TA = –25
°
to +85
°
C (Note 2.)
Power Supply Zener Voltage (ICC = 25 mA)
Thermal Shutdown
*Tested using VCC = 6.0 V, 9.0 V, 13.5 V, the MC44604 being off.
15
–1.0
–
2.0
μ
A
9
–
Ipk–stby/Iref
–
0.37
0.36
0.4
0.4
0.43
0.44
7
Vpin9/Vcs–st
2.4
2.6
2.9
–
ICC
mA
–
16
0.3
20
0.45
24
VZ
–
18.5
–
–
V
–
155
–
°
C
1. Adjust VCC above the start–up threshold before setting to 12 V.
2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
3. This function can be inhibited by connecting pin 5 to VCC.
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| MC44604PG | 功能描述:電流型 PWM 控制器 Voltage Mode PWM w/Bust Mode Standby RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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| MC44605PG | 功能描述:電流型 PWM 控制器 ANA SMPS PWM FREQ CONT RoHS:否 制造商:Texas Instruments 開關頻率:27 KHz 上升時間: 下降時間: 工作電源電壓:6 V to 15 V 工作電源電流:1.5 mA 輸出端數量:1 最大工作溫度:+ 105 C 安裝風格:SMD/SMT 封裝 / 箱體:TSSOP-14 |
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