Typical Applications - Skyworth 42E68 Instruction Manual

General Description
The SY8086 is a high-efficiency 1.4MHz synchronous
step-down DC-DC regulator ICs capable of delivering
up to 1A output current. The SY8086 operates over a
wide input voltage range from 2.5V to 5.5V and
integrate main switch and synchronous switch with
very low R to minimize the conduction loss.
DS(ON)
Low output voltage ripple and small external inductor
and capacitor sizes are achieved with 1.4MHz
switching frequency. This along with small SOT-23
footprint provides small PCB area application.
Ordering Information
SY8086 ( SY8086 ( ) )
Temperature Code Temperature Code
Package Code Package Code
Optional Spec Code Optional Spec Code
Temperature Range: -40 C to 85 C
Ordering Number
SY8086AAC

Typical Applications

V
EN
IN
IN
LX
C
IN
FB
GND
Figure 1. Schematic Diagram
SY8086 Rev. 0.11
Package type Note
SOT23-5 1A
L
C (opt.)
1
R
1
R
2
Silergy Corp. Confidential- Prepared for Customer Use Only
High Efficiency 1.4MHz, 1A
Synchronous Step Down Regulator
Preliminary Specification
Features
• Low R
DS(ON)
250m Ω /200m Ω
• 2.5-5.5V input voltage range
• 1.4MHz switching frequency minimizes the
external components
• Internal softstart limits the inrush current
• RoHS Compliant and Halogen Free
• Compact package: SOT23 5 pin
Applications
• Portable Navigation Device
• Smart phone
• USB Dongle
• Set Top Box
• Media Player
V
OUT
C
OUT
Figure2
SY8086
for internal switches (top/bottom):
Efficiency vs Load Current
1