NCP1653ADR2G ON Semiconductor, NCP1653ADR2G Datasheet - Page 15

• Manufacturer Part Number: NCP1653ADR2G
• Description: IC PFC CONTROLLER CCM 8SOIC
• Manufacturer: ON Semiconductor

Specifications of NCP1653ADR2G

• Mode: Continuous Conduction (CCM)
• Frequency - Switching: 67kHz
• Voltage - Supply: 8.75 V ~ 18 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (0.154", 3.90mm Width)
• Switching Frequency: 67 KHz
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Startup: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: NCP1653ADR2G; NCP1653ADR2GOSTR

independently from the second−stage converter, it is
recommended to use a circuit in Figure 41. When there is
no feedback current (I
the NCP1653 V
maximum). It is good for saving the current to charge the
V
current the startup current rises to as high as 1.5 mA in the
V
be implemented: a PNP bipolar transistor derives the
feedback current to ground at low V
so that the startup current keeps low and an initial voltage
can be quickly built up in the V
Figure 41 are just for reference.
Input
V
CC
CC
Figure 40. Self−biasing Scheme in Constant Output
When the NCP1653 circuit is required to be startup
Figure 41. Recommended Startup Biasing Scheme
in
< 4 V region. That is why the circuit of Figure 41 can
capacitor. However, when there is some feedback
180k
180k
180k
100uF
C2
CC
V
CC
560k
1.5M
startup current is as low (50 mA
Voltage Mode
FB
C1
= 0 mA) applied to FB pin (Pin 1),
BC556
CC
NCP1653
capacitor. The values in
CC
levels (V
CC
http://onsemi.com
< 4 V)
Output
V
out
15
V
voltage V
voltage V
Diode is connected to the V
excessive supply voltage. After startup, the operating range
is between 8.7 V and 18 V.
Thermal Shutdown
drive and then keeps the power switch off when the junction
temperature exceeds 150_C. The output stage is then
enabled once the temperature drops below typically 120_C
(i.e., 30_C hysteresis). The thermal shutdown is provided
to prevent possible device failures that could result from an
accidental overheating.
Output Drive
of power MOSFET. It is capable of up to ±1.5 A peak drive
current and has a typical rise and fall time of 88 and
61.5 ns with a 2.2 nF load.
CC
The device typically starts to operate when the supply
An internal thermal circuitry disables the circuit gate
The output stage of the device is designed for direct drive
Undervoltage Lockout (UVLO)
CC
CC
goes below 8.7 V. An 18 V internal ESD Zener
exceeds 13.25 V. It turns off when the supply
CC
pin (Pin 8) to prevent