NCP1652DR2G ON Semiconductor, NCP1652DR2G Datasheet - Page 31

• Manufacturer Part Number: NCP1652DR2G
• Description: IC PFC CONTROLLER CCM/DCM 16SOIC
• Manufacturer: ON Semiconductor

Specifications of NCP1652DR2G

• Mode: Continuous Conduction (CCM), Discontinuous Conduction (DCM)
• Frequency - Switching: 100kHz
• Current - Startup: 5.62mA
• Voltage - Supply: 9.3 V ~ 20 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Switching Frequency: 20 KHz to 250 KHz
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: NCP1652DR2GOSTR

Latch Input
the controller during overtemperature and overvoltage
faults (See Figure 69). The controller is latched if the
Latch−Off pin voltage is pulled below 1 V or above 6.5 V.
The NCP1652 has a dedicated latch input to easily latch
Vaux or VCC
NTC
Latch−Off
Figure 68. Relationship Between the Brown−Out, V
I
V
latch(clamp)
latch(clamp)
VDD
V
I latch(shdn)
V
V
V
BO(high)
BO(low)
CC(on)
CC(off)
OUTA
OUTB
V
V
CC
FF
Brown−Out
http://onsemi.com
Figure 69.
+
+
OTP comparator
OVP comparator
31
V
V
latch(high)
latch(low)
+
−
−
+
Last OUTB Pulase
Once the controller is latched, OUTA is disabled and OUTB
generates a final pulse that ends with the oscillator period.
No more pulses are generated after OUTB is terminated.
Figure 70 shows the relationship between the Latch−Off,
V
CC
, OUTA and OUTB signals.
CC
t
t
t
t
, OUTA and OUTB
Reset
t
latch(delay)
blanking
S
R
Q
Latch