參數(shù)資料
型號(hào)： NCP1205P2
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)壓器
英文描述： Single Ended PWM Controller Featuring QR Operation and Soft Frequency Foldback
中文描述： SWITCHING CONTROLLER, 125 kHz SWITCHING FREQ-MAX, PDIP14
封裝： PLASTIC, DIP-14
文件頁(yè)數(shù)： 6/20頁(yè)
文件大?。?/td> 163K
代理商： NCP1205P2
NCP1205
http://onsemi.com
6
MAXIMUM RATINGS
Pin No.
Value
Rating
DIP8
DIP14
Symbol
Min
Max
Unit
Power Supply Voltage
8
13
V
in
–
45
V
Thermal Resistance Junction–to–Air
DIP8
DIP14
–
–
–
–
R
JA
–
–
100
100
°
C/W
Operating Junction Temperature Range
Maximum Junction Temperature
–
–
–
–
T
J
T
Jmax
–
–
–25 to +125
150
°
C
°
C
Storage Temperature Range
–
–
T
stg
–
–60 to +150
°
C
ESD Capability, HBM Model
All Pins
All Pins
–
–
2.0
kV
ESD Capability, Machine Model
All Pins
All Pins
–
–
200
V
Demagnetization Pin Current
3
3
–
–
5.0
mA
ELECTRICAL CHARACTERISTICS
(For typical values T
A
= 25
°
C, for min/max values T
J
= –25
°
C to +125
°
C, Max T
J
= 150
°
C,
V
CC
= 12 V unless otherwise noted.)
Pin No.
Characteristics
DIP8
DIP14
Symbol
Min
Typ
Max
Unit
Demagnetization Block
Input Threshold Voltage (V
pin2
increasing)
2
3
Vth
50
65
85
mV
Hysteresis (V
pin2
decreasing)
2
3
V
H
–
30
–
mV
Input Clamp Voltage
High State (I
pin2
= 3.0 mA)
Low State (I
pin2
= –3.0 mA)
2
3
VC
H
VC
L
8.0
–0.9
10
–0.7
12
–0.5
V
Demag Propagation Delay
–
–
–
100
300
350
ns
No Demag Signal Activation
–
–
–
–
4.0
8.0
μ
s
Internal Input Capacitance at 1.0 V
2
3
C
pin2
–
10
–
pF
Demag Propagation Delay with 22 k
External Resistor
2
3
–
100
370
480
ns
Feedback Path
Input Impedance at V
FB
= 3.0 V
3
4
Zin
–
50
–
k
Internal Error Amplifier Closed Loop Gain
3
4
AV
CL
–
–3.0
–
–
Internal Built–In Offset Voltage for Error Detection
–
–
V
ref
2.2
2.5
2.8
V
Error Amplifier Level of VCO Take Over
–
–
–
–
1.0
–
V
Internal Divider from Internal Error Amp, Pin to Current
Setpoint
–
–
–
–
3.0
–
–
Fault Detection Circuitry
Internal Over Current Level
–
–
WL
L
–
1.5
–
V
Fault Time Duration to Latch Activation @ Ct = 1.0
η
F
–
–
–
–
128
–
ms
Over Current Latch–Off Phase @ Ct = 1.0
η
F
–
–
–
–
1.0
–
s
Hysteresis when V
FB
goes back into Regulation
–
–
–
–
100
–
mV
V
CC
(Pin 8) Over Voltage Protection
8
13
OVP1
36
40
43
V
Over Voltage Protection Threshold for DIP14 Version
6
6
OVP2
2.5
2.8
3.1
V
Current Sense Comparator
Input Bias Current @ 1.0 V
6
11
I
IB
–
0.02
–
μ
A
Maximum Current Setpoint
6
11
V
cl
0.9
1.0
1.1
V
Minimum Current Setpoint
6
11
V
min
225
250
285
mV
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