参数资料
| 型号： | NCP1379DR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 6/22页 |
| 文件大小： | 0K |
| 描述： | IC CTLR QUASI CURRENT MODE 8SOIC |
| 标准包装： | 2,500 |
| 输出隔离： | 隔离 |
| 输入电压： | 9 V ~ 28 V |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 带卷 (TR) |
NCP1379
ELECTRICAL CHARACTERISTICS (Unless otherwise noted: For typical values T J = 25 ° C, V CC = 12 V, V ZCD = 0 V, V FB = 3 V,
V CS = 0 V, V fault = 1.5 V, C T = 680 pF) For min/max values T J = ? 40 ° C to +125 ° C, Max T J = 150 ° C, V CC = 12 V)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
FEEDBACK SECTION ? FEEDBACK
V H2D
V H3D
V H4D
V HVCOD
V HVCOI
V H4I
V H3I
V H2I
Valley threshold
FB voltage where 1 st valley ends and 2 nd valley
starts
FB voltage where 2 nd valley ends and 3 rd valley
starts
FB voltage where 3 rd valley ends and 4 th valley
starts
FB voltage where 4 th valley ends and VCO starts
FB voltage where VCO ends and 4 th valley starts
FB voltage where 4 th valley ends and 3 rd valley
starts
FB voltage where 3 rd valley ends and 2 nd valley
starts
FB voltage where 2 nd valley ends and 1 st valley
starts
V FB decreases
V FB decreases
V FB decreases
V FB decreases
V FB increases
V FB increases
V FB increases
V FB increases
1.316
1.128
0.846
0.732
1.316
1.504
1.692
1.880
1.4
1.2
0.9
0.8
1.4
1.6
1.8
2.0
1.484
1.272
0.954
0.828
1.484
1.696
1.908
2.120
V
PROTECTIONS ? FAULT PROTECTION
T SHDN
T SHDN(HYS)
t OVLD
t OVLD(off)
t SSTART
V BO
I BO
t BO(delay)
V OVP
t latch(delay)
V Fault(clamp)
R Fault(clamp)
Thermal Shutdown
Thermal Shutdown Hysteresis
Overload Timer
OFF phase in auto ? recovery fault mode
Soft ? start duration
Brown ? Out level
Sourced hysteresis current V Fault > V BO
Delay before entering and exiting Brown ? out
Internal Fault detection level for OVP
Delay before latch confirmation (OVP)
Clamped voltage (Fault pin left open)
Clamping resistor (Note 3)
Device switching (F SW
around 65 kHz)
V FB = 4 V, V CS > V ILIM
V FB = 4 V, V CS ramping
up, measured from 1 st
DRV pulse to V CS(peak) =
90% of V ILIM
V Fault decreasing
V Fault = V BO + 0.2 V
V Fault increasing
Fault pin open
140
?
75
1.0
2.8
0.744
9
22.5
2.35
22.5
1.0
1.30
?
40
85
1.2
3.8
0.800
10
30.0
2.5
30
1.2
1.55
170
?
95
1.4
4.8
0.856
11
37.5
2.65
37.5
1.4
1.80
° C
° C
ms
s
ms
V
m A
m s
V
m s
V
k W
3.
4.
5.
6.
Guaranteed by design
The peak current setpoint goes down as the load decreases. It is frozen below I peak(VCO) (I peak = cst)
If negative voltage in excess to ? 300 mV is applied to ZCD pin, the current setpoint decrease is no longer guaranteed to be linear
Minimum value for T J = 125 ° C
http://onsemi.com
6
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