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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 highefficiency 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 RDS(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 SOT23/TSOT-23 footprint provides small PCB area application.
Features
low Rds(on) for internal switches (top/bottom) ο SY8008A: 300m Ω /250m Ω, 0.6A ο SY8008B: 250m Ω /200m Ω, 1A ο SY8008C: 200m Ω /150m Ω, 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 Applications
Portable Navigation Device Smart phone USB Dongle Set Top Box Media Player
SY8008□(□□)□ Temperature Code C: -40°C~85°C
Package Code: AA:SOT23-5 AC:TSOT23-5
Spec Code
Typical Applications
VIN
IN EN LX
L C1(opt.)
VOUT R1 COUT
CIN
FB GND
R2
Figure 1
Figure 2.
Efficiency vs Load Current
SY8008Rev. # 0.9
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