SY8120B Datasheet PDF - Silergy

Part Number SY8120B
Description Synchronous Step Down Regulator
Manufacturers Silergy 
Logo Silergy Logo 

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Application Note: AN_SY8120B
High Efficiency Fast Response, 2A, 18V Input
Synchronous Step Down Regulator
General Description
SY8120B develops high efficiency synchronous step-
down DC-DC converter capable of delivering 2A load
current . SY8120B operates over a wide input voltage
range from 4.5V to 18V and integrates main switch and
synchronous switch with very low RDS(ON) to minimize
the conduction loss.
SY8120B adopts the instant PWM architecture to
achieve fast transient responses for high step down
applications and high efficiency at light loads. In
addition, it operates under heavy load conditions to
minimize the size of inductor and capacitor.
Ordering Information
SY8120 ( )
Temperature Code
Package Code
Optional Spec Code
Temperature Range: -40°C to 85°C
Ordering Number Package type Note
Low RDS(ON) for internal switches
(top/bottom):145/135 m
4.5-18V input voltage range
2A load current capability
Instant PWM architecture to achieve fast transient
responses Internal softstart limits the inrush current
2% 0.6V reference
RoHS Compliant and Halogen Free
Compact package: SOT23-6
Set Top Box
Portable TV
Access Point Router
DSL Modem
Typical Applications
Figure 1. Schematic Diagram
AN_SY8120B Rev.0.2
Figure 2. Efficiency Figure

SY8120B equivalent
AN_SY8120B Rev.0.2


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Featured Datasheets

Part NumberDescriptionManufacturers
SY8120BThe function is Synchronous Step Down Regulator.Silergy
SY8120B1The function is Synchronous Step Down Regulator.Silergy

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