NCP3120 ,Dual 2 A Step-Down DC-DC Switching Regulator2NCP3120PIN DESCRIPTIONPin Symbol Description1, 31, 32 SW1 Switch node of Channel 1. Connect an ind ..
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NCP3120
Dual 2 A Step-Down DC-DC Switching Regulator
NCP3120
Dual 2.0 A, Step-Down
DC/DC Switching Regulator
The NCP3120 is a dual buck converter designed for low voltage
applications requiring high efficiency. This device is capable of
producing an output voltage as low as 0.8 V. The NCP3120 provides
dual 2.0 A switching regulators with an adjustable 200 kHz ï 750 kHz
switching frequency. The switching frequency is set by an external
resistor. The NCP3120 also incorporates an autoïtracking and
sequencing feature. Protection features include cycleïbyïcycle
current limit and undervoltage lockout (UVLO). The NCP3120 comes
in a 32ïpin QFN package.
Features Input V oltage Range from 4.5 V to 13.2 V 12 Vin to 5.0 Vout = 87% Efficiency Min @ 2.0 A 200ï750 kHz Operation Stable with Low ESR Ceramic Output Capacitor 0.8 ±1.5% FB Reference Voltage External SoftïStart Out of Phase Operation of OUT1 & OUT2 AutoïTracking and Sequencing Enable/Disable Capability Hiccup Overload Protection Low Shutdown Power (Iq < 100 A)
Typical Applications SetïT op Boxes, Portable Applications, Networking and
Telecommunications DSP/P/FPGA Core
Enable
Disable
R_TRACK
VIN
OUT1
OUT2
GND
GND
GND
GND
GND
R23
C23
D21 R21
R22
C21
GND
D11
GND GND C2 GND
GND
R11
R12
C11
L11
L21
PG1
PG2
EN1
SEQ1
EN2
SEQ2
TRACK1,2
SW1
VIN
SW2
R13
C13
C22
R24
R14
EN2
EN1
PG1
PG2
C12
Enable
Disable
NCP3120
RVIN
GND
MARKING DIAGRAM
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NCP3120
AWLYYWW
NCP3120= Specific Device Code = Assembly Location = Wafer Lot = Year = Work Week = PbïFree Package
QFN32
CASE 488AM
(Note: Microdot may be in either location)
See detailed ordering and shipping information in the package
dimensions section on page 40 of this data sheet.
ORDERING INFORMATION
