NCP1653, NCP1653A

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3

PIN FUNCTION DESCRIPTION

Pin

Symbol

Name

Function

1

FB / SD

Feedback /

Shutdown

The current is for output regulation, output overvoltage protection (OVP), and output undervoltage

protection (UVP).

2

Control Voltage /

Soft−Start

typically below 20 Hz to achieve near unity power factor.

capacitor.

3

In

Input Voltage

Sense

4

CS

Input Current

Sense

is for overcurrent protection (OCP), overpower limitation (OPL) and PFC duty cycle modulation.

5

Multiplier

Voltage

operates in peak current−mode.

6

GND

The IC Ground

−

7

Drv

Drive Output

This pin provides an output to an external MOSFET.

8

Supply Voltage

This pin is the positive supply of the device. The operating range is between 8.75 V and 18 V with

UVLO start threshold 13.25 V.

MAXIMUM RATINGS

Rating

Symbol

Value

Unit

Maximum Voltage Range

Maximum Current

−0.3 to +9

100

V

mA

Drive Output (Pin 7)

Maximum Voltage Range

Maximum Current Range (Note 3)

−0.3 to +18

1.5

V

A

Power Supply Voltage (Pin 8)

Maximum Voltage Range

Maximum Current

−0.3 to +18

100

V

mA

25

V

Power Dissipation and Thermal Characteristics

P suffix, Plastic Package, Case 626

Thermal Resistance Junction−to−Air

D suffix, Plastic Package, Case 751

Thermal Resistance Junction−to−Air

800

100

450

178

mW

°C/W

mW

°C/W

Operating Junction Temperature Range

−40 to +125

°C

Storage Temperature Range

−65 to +150

°C

Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality

should not be assumed, damage may occur and reliability may be affected.

1. This device series contains ESD protection and exceeds the following tests:

Pins 1−8: Human Body Model 2000 V per JEDEC Standard JESD22, Method A114.

Machine Model Method 190 V per JEDEC Standard JES222, Method A115A.

2. This device contains Latchup protection and exceeds ±100 mA per JEDEC Standard JESD78.

3. Guaranteed by design.