NCP1237

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32

Controller Operation (Autorecovery Version: B Option)

Figure 30. Controller Operation State Diagram (Autorecovery Overload Protection)

Stopped

Running

S Fault

S Brown-out

S HV OVP

S TSD

S Brown-out

S HV OVP

S TSD

Skip out

With Fault =

Soft−start

Soft−skip

S Soft-skip ends

Soft-start ends

Skip

Skip in

S Brown-out

S HV OVP

S TSD

S Brown-out

S HV OVP

S TSD

S Brown-out

S HV OVP

S TSD

Latch

S Brown-out

S VCC reset

High Latch

S High Latch

S Low Latch

S High Latch

S Low Latch

S High Latch

S Low Latch

Table 1. ORDERING INFORMATION

Part No.

Overload Protection

Switching Frequency

Package

NCP1237AD65R2G

Latched

65 kHz

SOIC−7

(Pb−Free)

2500 / Tape & Reel

NCP1237BD65R2G

Autorecovery

65 kHz

SOIC−7

(Pb−Free)

2500 / Tape & Reel

†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging

Specifications Brochure, BRD8011/D.