NCP12600

www.onsemi.com

3

ORDERING INFORMATION

Controller

Marking

Freq.

(kHz)

OCP

SCP

OVP

aux

OTP

CS

OVP

Mode

Skip

Package

Shipping

NCP12600AAASN65T1G

6AE

65

L

L

L

L

S

Q

TSOP6

(Pb−free)

3000 /

Tape &

Reel

NCP12600ABASN65T1G

6AF

65

AR

L

L

L

S

Q

NCP12600ABBSN65T1G

6AG

65

AR

L

L

L

S

N

NCP12600ACBSN65T1G

6AH

65

AR

AR

AR

AR

S

N

NCP12600AAASN100T1G

62E

100

L

L

L

L

S

Q

NCP12600ABASN100T1G

62F

100

AR

L

L

L

S

Q

NCP12600ACBSN100T1G

62G

100

AR

AR

AR

AR

S

N

AR

auto−recovery: the controller enters hiccup mode and tries to resume operations

L

latched: the controller is latched and the user needs to cycle the input voltage to restart

OCP

over current protection: the power supply is overloaded

SCP

short circuit protection: the power supply output is short circuited

Mode

single (S) or dual (D) trip point in overload

Skip

normal (N) or Quiet Skip (Q)

RFB

skip

Jitter in

DCM

+

LEB

VOTP

+

Vilim

+

−

+

−

VZCD

400 mV

VOVP1

1.5 us

blanking

ZCD

FB

CS

slope comp.

Rramp

Max

Ip

Skip

60mV

always

neg. or

0

DCM? DMG

Jitter in

CCM

OVP1

BO?

S

R

Q

Q

OTP

Qb

Qb

FB

FB

Vdd

OVP1

OTP

Vcc

+

−

OVP2

UVLO

Fixed Fsw

or VCO

clock

reset

slow

clock

Clamp

Vcc

Gnd

in

out

Drv

Multi−Mode Management

Fixed Frequency or

Valley Lockout Operation

Fault Management

Timers, UVLOs

Vcc discharge

1.5 us

blanking

Figure 2. Internal Block Diagram