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NCP1215A

Low Cost Variable OFF Time Switched Mode Power Supply Controller

ON Semiconductor 

NCP1215A

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ PIN FUNCTION DESCRIPTION

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ TSOP−6 SO−8

Symbol

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 4

1

FB

Description

The FB pin provides voltage feedback loop. The current injected into the pin determines the

primary switch OFF time interval. It also influences the peak value of the primary current.

3

2

CT

Connection for an external timing programming capacitor.

1

3

CS

The CS pin senses the power switch current.

2

4

GND

Primary and internal ground.

6

5

Gate

Output drive for an external power MOSFET.

5

6

VCC

Power supply voltage and Undervoltage Lockout.

7

7

NC

Unconnected pin.

8

8

NC

Unconnected pin.

ÁÁÁÁÁÁMAÁÁÁXIMÁÁÁUMÁÁÁRATÁÁÁINGÁÁÁS ÁÁÁÁÁÁÁÁÁRÁÁÁatinÁÁÁg ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁSyÁÁÁmboÁÁÁl ÁÁÁÁÁÁÁÁÁVaÁÁÁlue ÁÁÁÁÁÁÁÁÁUÁÁÁnitÁÁÁ

Power Supply Voltage

VCC

18

V

FB Pins Voltage Range

VFB

−0.3 to 18

V

CS and CT Pin Voltage Range

Vin

−0.3 to 10

V

Thermal Resistance, Junction−to−Air (SOIC−8 Version)

RqJA

178

°C/W

Junction Temperature

TJ

150

°C

Storage Temperature Range

Tstg

−60 to +150

°C

ESD Voltage Protection, Human Body Model (HBM)

VESD−HBM

2.0

kV

ESD Voltage Protection, Machine Model (MM)

VESD−MM

200

V

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit

values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,

damage may occur and reliability may be affected.

ORDERING INFORMATION

Device

Package

Shipping†

NCP1215ADR2

SOIC−8

2500 Units / Reel

NCP1215ADR2G

SOIC−8

(Pb−Free)

2500 Units / Reel

NCP1215ASNT1

TSOP−6

3000 Units / Reel

NCP1215ASNT1G

TSOP−6

(Pb−Free)

3000 Units / 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.

http://onsemi.com

3

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