参数资料
| 型号： | NCP1378PG |
| 厂商： | ON Semiconductor |
| 文件页数： | 4/15页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR FLYBACK PWM 7-PDIP |
| 产品变化通告： | Product Obsolescence 01/Jul/2009 |
| 标准包装： | 1 |
| PWM 型： | 电流模式 |
| 输出数： | 1 |
| 频率 - 最大： | 100kHz |
| 电源电压： | 8.2 V ~ 18 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 是 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 125°C |
| 封装/外壳： | 8-DIP（0.300"，7.62mm），7 引线 |
| 包装： | 剪切带 (CT) |
| 其它名称： | NCP1378PGOSCT |
NCP1378
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.)
Characteristic
Pin
Symbol
Min
Typ
Max
Unit
SUPPLY SECTION
V CC Increasing Level at which the Current Source Turns--Off
Minimum Operating Voltage after Turn--On
V CC Excursion between VCC ON and VCC OFF
V CC Decreasing Level at which the Latchoff Phase Ends
Internal IC Consumption, No Output Load on Pin 5, F SW = 60 kHz
Internal IC Consumption, 1.0 nF Output Load on Pin 5, F SW = 60 kHz
Internal IC Consumption, Latchoff Phase, V CC = 6.0 V
6
6
6
6
6
6
6
VCC ON
VCC OFF
VCC hyst
VCC latch
ICC1
ICC2
ICC3
7.8
7.0
0.8
--
--
--
--
8.4
7.5
--
5.5
1.0
1.6
220
9.0
8.2
--
--
1.3
(Note 1)
2.0
(Note 1)
--
V
V
--
V
mA
mA
m A
INTERNAL STARTUP CURRENT SOURCE (T j > 0 ? C)
High--Voltage Current Source, V CC = 7.8 V
High--Voltage Current Source, V CC = 0
8
8
IC1
IC2
2.4
--
4.0
4.5
6.0
--
mA
mA
DRIVE OUTPUT
Output Voltage Rise--Time @ CL = 1.0 nF, 10--90% of Output Signal
Output Voltage Fall--Time @ CL = 1.0 nF, 10--90% of Output Signal
Source Resistance
Sink Resistance
5
5
5
5
T r
T f
R OH
R OL
--
--
10
4.0
40
20
20
10
--
--
36
20
ns
ns
Ω
Ω
CURRENT COMPARATOR (Pin 5 not loaded)
Input Bias Current @ 1.0 V Input Level on Pin 3
Maximum Internal Current Setpoint
Propagation Delay from Current Detection to Gate OFF State
Leading Edge Blanking Duration
Internal Current Offset Injected on the CS Pin During OFF Time
3
3
3
3
3
I IB
I Limit
T DEL
T LEB
Iskip
--
0.9
--
--
--
0.02
1.0
110
340
200
--
1.1
160
--
--
m A
V
ns
ns
m A
OVERVOLTAGE SECTION (V CC = 11 V)
Sampling Delay After ON Time
OVP Internal Reference Level
1
1
T sample
V ref
--
4.6
4.5
5.2
--
6.3
m s
V
FEEDBACK SECTION (V CC = 11 V, Pin 5 loaded by 1.0 k Ω )
Internal Pullup Resistor
Pin 3 to Current Setpoint Division Ratio
Internal Soft--Start
2
--
--
Rup
Iratio
Tss
--
--
--
20
3.3
1.0
--
--
--
k Ω
--
ms
DEMAGNETIZATION DETECTION BLOCK
Input Threshold Voltage (Vpin 1 Decreasing)
Hysteresis (Vpin 1 Decreasing)
1
1
V th
V H
30
--
50
20
90
--
mV
mV
Input Clamp Voltage
V
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
Demag Propagation Delay
Internal Input Capacitance at Vpin 1 = 1.0 V
Internal Blanking Delay after T ON
1
1
1
T dem
C par
T blank
--
--
--
240
10
8.0
--
--
--
ns
pF
m s
1. Max value at T j = 0 ? C, please see characterization curves.
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