Power Converters

PJ16573

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Product Description

60V, 3A, High-Efficiency, Compact, Fully Integrated, Synchronous Buck Converter

Product Features

Wide Input range: 3.4V to 60V
3A Continuous Output Current
High-Efficiency, Synchronous Mode Control
230mΩ/50mΩ Internal Power MOSFETs
Adjustable Switching Frequency: 300kHz to 2.2MHz
180° Out-of-Phase SYNCO Clock
Low 30μA Operating Quiescent Current From 24VIN to 5V
Low 1.5μA Shutdown Current
FB Voltage Tolerance: 0.8V ±2% over the Full Temperature Range (–40°C to +125°C)
Selectable Pulse Frequency Modulation (PFM) Mode or Forced Continuous Conduction Mode (FCCM) during Light-Load Operation
Precision Enable and Power Good (PG)
Output 0.7ms Soft-Start
Low-Dropout (LDO) Mode Operation
VIN Under-Voltage Lockout (UVLO)
Cycle-by-Cycle Over-Current Protection (OCP)
Short-Circuit Protection (SCP) with Hiccup mode
Thermal Shutdown
Available in a QFN2.5X3-12 Package

Product Introduction

Product Specifications

Related Files

Consultation List

Product Introduction

The PJ16573 is a 3A synchronous step-down, DC-DC converter,which integrated a 230mΩ high-side MOSFET and a 50mΩ low-side MOSFET to provide a high efficiency solution.


The PJ16573 provides a wide input range, from 3.4V to 60V, which is highly adaptable to a wide variety of step-down applications within Industrial and telecom environments. With a shutdown current as low as 1.5μA, this device is also an ideal option for battery-powered applications.


The PJ16573 uses peak-current-mode control (with the integrated compensation), Pulse Frequency Modulation (PFM) mode scheme for excellent stability, output accuracy and transient response.


Implemented Internally, soft-start function and slope compensation circuits reduces design time and allows the device to be used with the minimum the external components. The support for a close-to-100% duty cycle and Low-Dropout (LDO) Mode operation enables the device to withstand automotive cold cranking.


The PJ16573 features power good function, undervoltage lockout (UVLO), cycle-by-cycle over-current protection, hiccup mode short-circuit protection, thermal shutdown.

Product Specifications

Recommended Operating Conditions

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Parameter
Specification
Operating Temperature
-40°C to 125°C
Continuous Supply Voltage (VIN)
3.4V to 60V
Output Voltage (VOUT)
1% of VIN to 98% of VIN
Load Current Range
0A to 3A
Junction Temperature (TJ)
-40°C to 150°C

Key Electrical Characteristics

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Parameter
Condition
Specification
Quiescent Supply Current
4.6uA (Typ.)
FB Reference Voltage
0.8V (Typ.)
High-Side On Resistance
VBST-VSW = 3.5V
230mΩ (Typ.)
Low-Side On Resistance
50mΩ (Typ.)
(BST-SW) UVLO
2.25V (Typ.)
Peak Current Limit Threshold
20% duty cycle
5.1A (Typ.)
Valley Current Limit Threshold
3A (Min.)
Thermal Shutdown
170°C (Typ.)

Related Files

Technical Documentation

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PJ16573_Datasheet

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