參數(shù)資料
型號： NCP1215
廠商： ON SEMICONDUCTOR
英文描述： Low Cost Variable OFF Time Switched Mode Power Supply Controller
中文描述： 低成本可變關(guān)閉時間開關(guān)電源控制器
文件頁數(shù)： 4/16頁
文件大?。?/td> 148K
代理商： NCP1215
NCP1215
http://onsemi.com
4
ELECTRICAL CHARACTERISTICS
(V
CC
= 12 V, for typical values T
j
= 25
°
C, for min/max values T
j
= 0
°
C to +105
°
C, unless
otherwise noted.)
Characteristic
Symbol
Min
Typ
Max
Unit
VOLTAGE FEEDBACK
Offset Voltage
V
offset
1.05
1.19
1.34
V
Maximum CT Pin Voltage at FB Current = 25 A (Including V
offset
)
V
CT25 A
2.4
3.1
4.3
V
Maximum CT Pin Voltage at FB Current = 50 A (Including V
offset
)
V
CT50 A
3.6
4.6
6.2
V
CT PIN OFF TIME CONTROL
Source Current (CT Pin Grounded)
I
CT
8.0
9.8
11.5
A
Source Current Maximum Voltage Capability
V
CTmax
6.5
V
Minimum CT Pin Voltage (Pin Unloaded, Discharge Switch Turned On)
V
CTmin
20
mV
CURRENT SENSE
Minimum Source Current (I
FB
= 180 A, CT Pin Grounded)
I
CSmin
8.0
12.5
16
A
Maximum Source Current (I
FB
= 0 A, CT Pin Grounded)
I
CSmax
40
49
58
A
Comparator Threshold Voltage
V
th
15
42
80
mV
Propagation Delay (CS Falling Edge to Gate Output)
t
delay
215
310
ns
GATE DRIVE
Sink Resistance (I
sink
= 30 mA)
R
OL
25
40
90
Source Resistance (I
source
= 30 mA)
R
OH
60
80
130
POWER SUPPLY
V
CC
Startup Voltage
V
startup
12.5
14.2
V
Undervoltage Lockout Threshold Voltage
V
UVLO
7.2
9.0
V
Hysteresis (V
startup
V
UVLO
)
V
hys
2.2
3.5
V
V
CC
Startup Current Consumption (V
CC
= 8.0 V)
I
CCstart
2.8
6.5
A
V
CC
Steady State Current Consumption
(C
GATE
= 1.0 nF, f
SW
= 100 kHz, FB open)
I
CCSW
0.55
0.9
1.75
mA
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