NCP1546 ,1.5 A, 170 kHz, Low Voltage Buck Regulator with Synchronization CapabilityFeatures 18−LEAD DFN2 MN SUFFIX• V Architecture Provides Ultra−Fast Transient Response, ImprovedCAS ..
NCP1547 ,1.5 A, 340 kHz, Low Voltage Buck Regulator with Synchronization Capability2EPADNCP1547PACKAGE PIN DESCRIPTIONPIN SYM-SO−8 DFN−18 BOL FUNCTION1 1 BOOST The BOOST pin provides ..
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NCP1546
1.5 A, 170 kHz, Low Voltage Buck Regulator with Synchronization Capability
NCP1546
1.5 A, 170 kHz, Buck
Regulator with
Synchronization CapabilityThe NCP1546 is a 1.5 A buck regulator IC operating at a
fixed−frequency of 170 kHz. The device uses the V2 � controlarchitecture to provide unmatched transient response, the best overall
regulation and the simplest loop compensation for today’s high−speed
logic. The NCP1546 accommodates input voltages from 4.0 V to 40 V
and contains synchronization circuitry.
The on−chip NPN transistor is capable of providing a minimum of
1.5 A of output current, and is biased by an external “boost” capacitor
to ensure saturation, thus minimizing on−chip power dissipation.
Protection circuitry includes thermal shutdown, cycle−by−cycle
current limiting and frequency foldback.
FeaturesV2 Architecture Provides Ultra−Fast Transient Response, Improved
Regulation and Simplified Design Wide Operating Range: 4 V to 40 V 2.0% Error Amp Reference V oltage Tolerance Switch Frequency Decrease of 4:1 in Short Circuit Conditions
Reduces Short Circuit Power Dissipation BOOST Lead Allows “Bootstrapped” Operation to Maximize
Efficiency Sync Function for Parallel Supply Operation or Noise Minimization Shutdown Lead Provides Power−Down Option 1.0 �A Quiescent Current During Power−Down Thermal Shutdown Soft−Start These are Pb−Free Devices
