SA57254-XX

Features:

*Operates from 0.7 to 9 VDC
*Ultra low operating supply current-typically 17 A
*Built-in power FET
*High efficiency-typically 83%
*High precision output-typically ±2.4%
*Operating temperature range of 40 to +85 °C
*Available output voltages: 2.0, 2.5, 2.8, 3.0, 3.3, 3.6, 5.0 VDC
*Available in a 5-lead small outline surface mount package(SOP003)


Application

*Mobile and portable phones
*Instrumentation and industrial products
*Other portable, battery-operated equipment


Specifications

SYMBOL                PARAMETER                                 MIN.                  MAX.               UNIT
V_IN(max)               Power supply voltage                0.3                   11                   V
V_FB                       FB pin voltage                            0.3                    11                   V
V_SW                      SW pin voltage                          0.3                    11                   V
I_SW                       SW pin current                                                    300                mA
T_oper                     Operating temperature             40                     +85                ° C
T_stg                       Storage temperature                40                      +125              °C
P_D                         Power dissipation                                                150               mW
 

Description

The SA57254-XX is a fully integrated DC/DC converter circuit.Efficient, compact power conversion is achieved with a pulse width modulation (PWM) controlled switching regulator circuit designed using CMOS processing. Low ripple and high efficiency of typically 83% are achieved through PWM control. The SA57254-XX has a high precision output with ±2.4% accuracy. Few external components are required.

The SA57254-XX has a built-in soft-start circuit which reduces inrush current and voltage overshoot during start-up. A low resistance CMOS power FET, which has low leakage current and low parasitic capacitance, is on-chip.