參數(shù)資料
型號(hào)： NCP1207ADR2G
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)壓器
英文描述： PWM Current-Mode Controller for Free Running Quasi-Resonant Operation
中文描述： 0.5 A SWITCHING CONTROLLER, 200 kHz SWITCHING FREQ-MAX, PDSO8
封裝： LEAD FREE, SOIC-8
文件頁(yè)數(shù)： 4/16頁(yè)
文件大?。?/td> 197K
代理商： NCP1207ADR2G
NCP1207A
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS
(For typical values T
J
= 25
°
C, for min/max values T
J
= 0
°
C to +125
°
C, Max T
J
= 150
°
C,
V
CC
= 11 V unless otherwise noted)
Rating
Pin
Symbol
Min
Typ
Max
Unit
DYNAMIC SELFSUPPLY
V
CC
Increasing Level at which the Current Source Turnsoff
V
CC
Decreasing Level at which the Current Source Turnson
V
CC
Decreasing Level at which the Latchoff Phase Ends
6
VCC
OFF
VCC
ON
VCC
latch
10.8
12
12.9
V
6
9.1
10
10.6
V
6
5.3
V
V
CC
Level at which Output Pulses are Disabled
6
UVLO
VCC
ON
200mV
V
Internal IC Consumption, No Output Load on Pin 5,
F
SW
= 60 kHz
6
ICC1
1.0
1.3
(Note 1)
mA
Internal IC Consumption, 1.0 nF Output Load on Pin 5,
F
SW
= 60 kHz
6
ICC2
1.6
2.0
(Note 1)
mA
Internal IC Consumption in Latchoff Phase
6
ICC3
330
A
INTERNAL STARTUP CURRENT SOURCE
(T
J
Highvoltage Current Source, V
CC
= 10 V
Highvoltage Current Source, V
CC
= 0
0
°
C)
8
IC1
4.3
7.0
9.6
mA
8
IC2
8.0
mA
DRIVE OUTPUT
Output Voltage Risetime @ CL = 1.0 nF, 1090% of Output Signal
5
T
r
40
ns
Output Voltage Falltime @ CL = 1.0 nF, 1090% of Output Signal
5
T
f
20
ns
Source Resistance
5
R
OH
R
OL
12
20
36
Sink Resistance
5
5.0
10
19
CURRENT COMPARATOR
(Pin 5 Unloaded)
Input Bias Current @ 1.0 V Input Level on Pin 3
3
I
IB
I
Limit
T
DEL
T
LEB
0.02
A
Maximum Internal Current Setpoint
3
0.92
1.0
1.12
V
Propagation Delay from Current Detection to Gate OFF State
3
100
160
ns
Leading Edge Blanking Duration
3
380
ns
Internal Current Offset Injected on the CS Pin during OFF Time
3
Iskip
200
A
OVERVOLTAGE SECTION
(V
CC
= 11 V)
Sampling Delay after ON Time
1
T
sample
V
ref
4.5
s
OVP Internal Reference Level
1
6.4
7.2
8.0
V
FEEDBACK SECTION
(V
CC
= 11 V, Pin 5 Loaded by 1.0 k )
Internal Pullup Resistor
2
Rup
20
k
Pin 3 to Current Setpoint Division Ratio
Iratio
3.3
Internal Softstart
Tss
1.0
ms
DEMAGNETIZATION DETECTION BLOCK
Input Threshold Voltage (Vpin 1 Decreasing)
1
V
th
V
H
35
50
90
mV
Hysteresis (Vpin 1 Decreasing)
1
20
mV
Input Clamp Voltage
High State (Ipin 1 = 3.0 mA)
Low State (Ipin 1 = 2.0 mA)
1
1
VC
H
VC
L
8.0
0.9
10
0.7
12
0.5
V
V
Demag Propagation Delay
1
T
dem
C
par
T
blank
210
ns
Internal Input Capacitance at Vpin 1 = 1.0 V
1
10
pF
Minimum T
OFF
(Internal Blanking Delay after T
ON
)
1
8.0
s
Timeout After Last Demag Transition
1
T
out
R
int
5.0
s
Pin 1 Internal Impedance
1. Max value at T
J
= 0
°
C.
1
28
k
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