June 2009
FSEZ1016A (EZSWITCH™, ™)
Primary-Side-Regulation PWM Integrated Power MOSFET
Features
Constant-Voltage (CV) and Constant-Current (CC)
Control without Secondary-Feedback Circuitry
Accurate Constant Current Achieved by Fairchild’s
Proprietary TRUECURRENT™ Technique
Green Mode: Frequency Reduction at Light-Load
Fixed PWM Frequency at 43kHz with Frequency
Hopping to Reduce EMI
Low Startup Current: 10μA Maximum
Low Operating Current: 3.5mA
Peak-Current-Mode Control in CV Mode
Cycle-by-Cycle Current Limiting
Over-Temperature Protection (OTP)
with Auto-Restart
Brownout Protection with Auto-Restart
VDD Over-Voltage Protection (OVP) with
Auto-Restart
VDD Under-Voltage Lockout (UVLO)
SOIC-7 Package
Applications
Battery Chargers for Cellular Phones, Cordless
Phones, PDAs, Digital Cameras, Power Tools
Replaces Linear Transformer and RCC SMPS
Offline High Brightness (HB) LED Drivers
Related Resources
AN-6067 Design Guide for FAN100/102 and
FSEZ1016A/1216
Description
The primary-side PWM integrated power MOSFET
(EZSWITCH™), FSEZ1016A, significantly simplifies
power supply designs that require CV and CC regulation
capabilities. FSEZ1016A controls the output voltage and
current precisely with only the information in the primary
side of the power supply, not only removing the output
current sensing loss, but also eliminating all secondary
feedback circuitry.
The green-mode function with a low startup current
(10µA) maximizes the light-load efficiency so the power
supply can meet stringent standby power regulations.
Compared with conventional secondary-side regulation
approach; the FSEZ1016A can reduce total cost,
component count, size, and weight; while
simultaneously increasing efficiency, productivity, and
system reliability.
FSEZ1016A is available in a 7-pin SOIC package.
A typical output CV/CC characteristic envelope is shown
in Figure 1.
Figure 1. Typical Output V-I Characteristic
Ordering Information
Part Number
FSEZ1016AMY
Operating
Temperature
Range
-40°C to +125°C
MOSFET MOSFET
BVDSS
RDS(ON)
600V
9.3Ω
(Typical)
Eco
Status
Green
Package
7-Lead, Small Outline
Integrated Circuit
Package (SOIC)
Packing
Method
Tape & Reel
For Fairchild’s definition of Eco Status, please visit: http://www.fairchildsemi.com/company/green/rohs_green.html.
© 2009 Fairchild Semiconductor Corporation
FSEZ1016A Rev. 1.0.1
www.fairchildsemi.com