Shivaki STV-24LEDGR7, Service Manual

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SY8008A/SY8008B/SY8008C
High Efficiency 1.5MHz, 0.6A/1A/1.2A
Synchronous Step Down Regulator
Preliminary Spec
General Description
The SY8008A, SY8008B and SY8008C are high-
efficiency 1.5MHz synchronous step-down DC-DC
regulator ICs capable of delivering up to 1.2A output
currents. The SY8008 family operate over a wide input
voltage range from 2.5V to 5.5V and integrate main
switch and synchronous switch with very low R
DS(ON)
to minimize the conduction loss.
Low output voltage ripple and small external inductor
and capacitor sizes are achieved with 1.5MHz
switching frequency. This along with small SOT-
23/TSOT-23 footprint provides small PCB area
application.
Applications
•
Portable Navigation Device
•
Smart phone
•
USB Dongle
•
Set Top Box
•
Media Player
Features
•
low Rds(on) for internal switches (top/bottom)
ο
SY8008A: 300m /250m , 0.6A
ο
SY8008B: 250m /200m , 1A
ο
SY8008C: 200m /150m , 1.2A
•
2.5-5.5V input voltage range
•
1.5MHz switching frequency minimizes the
external components
•
Internal softstart limits the inrush current
•
100% dropout operation
•
RoHS Compliant and Halogen Free
•
Compact package: SOT23-5/ TSOT23-5 pin
Ordering Information
Temperature Code
C: -40
°
C~85
°
C
Package Code:
AA:SOT23-5
AC:TSOT23-5
Spec Code
SY8008
□ □ □ □
(
□□ □□ □□ □□
)
□ □ □ □
Typical Applications
LX
IN
GND
FB
EN
V
IN
C
IN
L
R
1
R
2
V
OUT
C
OUT
C
1
(opt.)
Figure 1 Figure 2. Efficiency vs Load Current
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