參數(shù)資料
型號： MC44603ADW
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)壓器
英文描述： MIXED FREQUENCY MODE GREENLINE PWM CONTROLLER
中文描述： 0.75 A SWITCHING CONTROLLER, 250 kHz SWITCHING FREQ-MAX, PDSO16
封裝： SOIC-16
文件頁數(shù)： 4/24頁
文件大?。?/td> 405K
代理商： MC44603ADW
MC44603A
4
MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS
(continued)
(VCC and VC = 12 V, [Note 3], Rref = 10 k
, CT = 820 pF, for typical values TA = 25
°
C,
for min/max values TA = –25
°
to +85
°
C [Note 4], unless otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
DEMAGNETIZATION DETECTION SECTION
(Note 9)
Demagnetization Detect Input
Demagnetization Comparator Threshold (VPin 9 Decreasing)
Propagation Delay (Input to Output, Low to High)
Input Bias Current (Vdemag = 65 mV)
Negative Clamp Level (Idemag = –2.0 mA)
Positive Clamp Level (Idemag = 2.0 mA)
SOFT–START SECTION
(Note 11)
Ratio Charge Current/Iref
TA = 0
°
to +70
°
C
TA = –25
°
to +85
°
C
Discharge Current (Vsoft–start = 1.0 V)
Clamp Level
Vdemag–th
–
Idemag–lb
CL(neg)
CL(pos)
50
–
–0.5
65
0.25
–
80
–
–
mV
μ
s
μ
A
–
–0.38
–
V
–
0.72
–
V
Iss(ch)/Iref
–
0.37
0.36
0.4
–
0.43
0.44
Idischarge
Vss(CL)
Dsoft–start 12k
Dsoft–start
1.5
5.0
–
mA
2.2
2.4
2.6
V
Duty Cycle (Rsoft–start = 12 k
)
Duty Cycle
(Vsoft–start (Pin 11) = 0.1 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 10)
Current Sense Voltage Threshold (Vfoldback (Pin 5) = 0.9 V)
Foldback Input Bias Current (Vfoldback (Pin 5) = 0 V)
STANDBY SECTION
Ratio IR P Stby/Iref
TA = 0
°
to +70
°
C
TA = –25
°
to +85
°
C
Ratio Hysteresis (Vh Required to Return to Normal Operation from Standby
Operation)
TA = 0
°
to +70
°
C
TA = –25
°
to +85
°
C
Current Sense Voltage Threshold (VR P Stby (Pin 12) = 1.0 V)
CURRENT SENSE SECTION
Maximum Current Sense Input Threshold
(Vfeedback (Pin 14) = 2.3 V and Vfoldback (Pin 6) = 1.2 V)
Input Bias Current
36
–
42
–
49
0
%
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
VCS–th
Ifoldback–lb
0.86
0.89
0.9
V
–6.0
–2.0
–
μ
A
IR P Stby/Iref
–
0.37
0.36
0.4
–
0.43
0.44
Vh/VR P Stby
–
1.42
1.4
1.5
–
1.58
1.6
VCS–Stby
0.28
0.31
0.34
V
VCS–th
0.96
1.0
1.04
V
ICS–ib
–
–10
–2.0
–
μ
A
Propagation Delay (Current Sense Input to Output at VTH of
MOS transistor = 3.0 V)
–
120
200
ns
TOTAL DEVICE
Power Supply Current
Startup (VCC = 13 V with VCC Increasing)
Operating TA = –25
°
to +85
°
C (Note 3)
Power Supply Zener Voltage (ICC = 25 mA)
Thermal Shutdown
ICC
mA
–
13
0.3
17
0.45
20
VZ
–
18.5
–
–
V
–
155
–
°
C
NOTES:
1
3. Adjust VCC above the startup threshold before setting to 12 V.
1
4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
1
9. This function can be inhibited by connecting Pin 8 to Gnd. This allows a continuous current mode operation.
10. This function can be inhibited by connecting Pin 5 to VCC.
11. The MC44603A can be shut down by connecting the Soft–Start pin (Pin 11) to Ground.
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MC44603ADWG 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(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MC44603ADWR2 功能描述:電流型 PWM 控制器 Voltage/Current PWM RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MC44603ADWR2G 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(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MC44603AP 功能描述:電流型 PWM 控制器 Voltage/Current PWM RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
MC44603APG 功能描述:電流型 PWM 控制器 Voltage/Current PWM w/Bust Mode Standby RoHS:否 制造商:Texas Instruments 開關(guān)頻率:27 KHz 上升時(shí)間: 下降時(shí)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(shù)量:1 最大工作溫度:+ 105 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TSSOP-14
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