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| 型号： | NCP1653DR2 |
| 厂商： | ON Semiconductor |
| 文件页数： | 3/19页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PFC CURRENT MODE 8SOIC |
| 产品变化通告： | LTB Notification 03/Jan/2008 |
| 标准包装： | 1 |
| 模式： | 连续导电（CCM） |
| 频率 - 开关： | 90kHz ~ 110kHz |
| 电源电压： | 8.75 V ~ 18 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOICN |
| 包装： | 剪切带 (CT) |
| 其它名称： | NCP1653DR2OSCT |
NCP1653, NCP1653A
PIN FUNCTION DESCRIPTION
Pin
1
Symbol
FB / SD
Name
Feedback /
Shutdown
Function
This pin receives a feedback current I FB which is proportional to the PFC circuit output voltage.
The current is for output regulation, output overvoltage protection (OVP), and output undervoltage
protection (UVP).
When I FB goes above 107% I ref , OVP is activated and the Drive Output is disabled.
When I FB goes below 8% I ref , the device enters a low ? consumption shutdown mode.
2
V control
Control Voltage /
Soft ? Start
The voltage of this pin V control directly controls the input impedance and hence the power factor of
the circuit. This pin is connected to an external capacitor C control to limit the V control bandwidth
typically below 20 Hz to achieve near unity power factor.
The device provides no output when V control = 0 V. Hence, C control also works as a soft ? start
capacitor.
3
4
5
6
7
8
In
CS
V M
GND
Drv
V CC
Input Voltage
Sense
Input Current
Sense
Multiplier
Voltage
The IC Ground
Drive Output
Supply Voltage
This pin sinks an input ? voltage current I vac which is proportional to the RMS input voltage V ac .
The current I vac is for overpower limitation (OPL) and PFC duty cycle modulation. When the
product (I S ? I vac ) goes above 3 nA 2 , OPL is activated and the Drive Output duty ratio is reduced by
pulling down V control indirectly to reduce the input power.
This pin sources a current I S which is proportional to the inductor current I L . The sense current I S
is for overcurrent protection (OCP), overpower limitation (OPL) and PFC duty cycle modulation.
When I S goes above 200 m A, OCP is activated and the Drive Output is disabled.
This pin provides a voltage V M for the PFC duty cycle modulation. The input impedance of the
PFC circuit is proportional to the resistor R M externally connected to this pin. The device operates
in average current ? mode if an external capacitor C M is connected to the pin. Otherwise, it
operates in peak current ? mode.
?
This pin provides an output to an external MOSFET.
This pin is the positive supply of the device. The operating range is between 8.75 V and 18 V with
UVLO start threshold 13.25 V.
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
FB, V control , In, CS, V M Pins (Pins 1 ? 5)
Maximum Voltage Range
Maximum Current
V max
I max
? 0.3 to +9
100
V
mA
Drive Output (Pin 7)
Maximum Voltage Range
Maximum Current Range (Note 1)
V max
I max
? 0.3 to +18
1.5
V
A
Power Supply Voltage (Pin 8)
Maximum Voltage Range
Maximum Current
Transient Power Supply Voltage, Duration < 10 ms, IV CC < 20 mA
V max
I max
? 0.3 to +18
100
25
V
mA
V
Power Dissipation and Thermal Characteristics
P suffix, Plastic Package, Case 626
Maximum Power Dissipation @ T A = 70 ° C
Thermal Resistance Junction ? to ? Air
D suffix, Plastic Package, Case 751
Maximum Power Dissipation @ T A = 70 ° C
Thermal Resistance Junction ? to ? Air
Operating Junction Temperature Range
Storage Temperature Range
P D
R q JA
P D
R q JA
T J
T stg
800
100
450
178
? 40 to +125
? 65 to +150
mW
° C/W
mW
° C/W
° C
° C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
A. This device series contains ESD protection and exceeds the following tests:
Pins 1 ? 8: Human Body Model 2000 V per MIL ? STD ? 883, Method 3015.
Machine Model Method 190 V.
B. This device contains Latchup protection and exceeds ± 100 mA per JEDEC Standard JESD78.
1. Guaranteed by design.
http://onsemi.com
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