SIP12107 Datasheet, PDF (1/19 Pages) Vishay Siliconix – 5 V, 3 A Current-Mode Constant On-Time Synchronous Buck Regulator

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SiP12107
Vishay Siliconix
5 V, 3 A Current-Mode Constant On-Time
Synchronous Buck Regulator
DESCRIPTION
The SiP12107 is a high frequency current-mode constant
on-time (CM-COT) synchronous buck regulator with
integrated high-side and low-side power MOSFETs. Its
power stage is capable of supplying 3 A continuous current
at 4 MHz switching frequency. This regulator produces an
adjustable output voltage down to 0.6 V from 2.8 V to 5.5 V
input rail to accommodate a variety of applications,
including computing, consumer electronics, telecom, and
industrial.
SiP12107’s CM-COT architecture delivers ultra-fast
transient response with minimum output capacitance and
tight ripple regulation at very light load. No ESR or external
ESR network is required for loop stability purpose. The
device also incorporates a power saving scheme that
significantly increases light load efficiency.
The regulator integrates a full protection feature set,
including output overvoltage protection (OVP), output under
voltage protection (UVP) and thermal shutdown (OTP). It
also has UVLO for input rail and internal soft-start ramp.
The SiP12107 is available in lead (Pb)-free power enhanced
MLP-16L package in 3 mm x 3 mm dimension.
FEATURES
• Halogen-free According to IEC 61249-2-21
Definition
• 2.8 V to 5.5 V input voltage
• Adjustable output voltage down to 0.6 V
• 3 A continuous output current
• Programmable switching frequency up to 4 MHz
• 95 % peak efficiency
• Supports all ceramic capacitors No external ESR required
• Ultrafast transient response
• Selectable power saving mode or force current mode
• ± 1 % accuracy
• Pulse-by-pulse current limit
• Scalable with SiP12108 - 5A
• Fully protected with OTP, SCP, UVP, OVP
• P_Good Indicator
• Compliant to RoHS Directive 2011/65/EU
APPLICATIONS
• Notebook computers
• Desktop PCs and servers
• Handheld devices
• POLs for telecom
• Consumer electronics
• Industrial and automation
TYPICAL APPLICATION CIRCUIT AND PACKAGE OPTIONS
PWR_SAVE_MODE
ENABLE
POWER GOOD
INPUT = 2.8 V to 5.5 V
PGD
V_IN
EN AUTO
LX
V_OUT
AV_IN
P_GND
A_GND
V_FB
GMO
R_ON
V_OUT
Fig. 1 - Typical Application Circuit for SiP12107
S12-0412-Rev. B, 20-Feb-12
1
Document Number: 63395
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