FSEZ1216NY datasheet(1/14 Pages) FAIRCHILD

Part #	FSEZ1216NY

Description	Primary-Side-Regulation PWM Integrated Power MOSFET

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

Direct Link	http://www.fairchildsemi.com

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September 2008

www.fairchildsemi.com

FSEZ1216 • Rev. 1.0.0

FSEZ1216 — Primary-Side-Regulation PWM Integrated

Power MOSFET

Features

Constant-Voltage (CV) and Constant-Current (CC)

Control without Secondary-Feedback Circuitry

Green-Mode Function: PWM Frequency Linearly

Decreasing

Fixed PWM Frequency at 42kHz with Frequency

Hopping to Solve EMI Problem

Cable Compensation in CV Mode

Low Startup Current: 10μA

Low Operating Current: 3.5mA

Peak-Current-Mode Control in CV Mode

Cycle-by-Cycle Current Limiting

VDD Over-Voltage Protection with Auto-Restart

VDD Under-Voltage Lockout (UVLO)

Fixed Over-Temperature Protection with Latch

DIP-8 Package Available

Applications

Battery chargers for cellular phones, cordless

phones, PDA, digital cameras, power tools

Replaces linear transformer and RCC SMPS

Description

This highly integrated PWM controller, FSEZ1216,

provides several features to enhance the performance

of low-power flyback converters. The proprietary

topology of FSEZ1216 enables simplified circuit design

for battery charger applications. A low-cost, smaller, and

lighter charger results when compared to a conventional

design or a linear transformer. The startup current is

only 10µA, which allows use of large startup resistance

for further power saving.

To minimize the standby power consumption, the

proprietary green-mode function provides off-time

modulation to linearly decrease PWM frequency under

light-load conditions. This green-mode function assists

the power supply in meeting power conservation

requirements.

Using FSEZ1216, a charger can be implemented with

few external components and minimized cost. A typical

output CV/CC characteristic is shown in Figure 1.

FSEZ1216 controller is available in an 8-pin DIP package.

Figure 1.

Typical Output V-I Characteristic

Ordering Information

Part Number

Operating

Temperature Range

Eco

Status

Package

Packing

Method

FSEZ1216NY

-40°C to +105°C

Green

8-Lead, Dual Inline Package (DIP-8)

Tube

For Fairchild’s definition of “green” Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.

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