SP2026 Ver la hoja de datos (PDF) - Signal Processing Technologies

Número de pieza

componentes Descripción

Fabricante

SP2026

+2.7V to +5.5V USB Power Control Switch

Signal Processing Technologies 

®

SP2026

+2.7V to +5.5V USB Power Control Switch

s Compliant to USB Specifications

s +2.7V to +5.5V Input Voltage Range

s Two Independent Power Switches

s Two Error Flag Outputs, Open Drain

s 2.4V Undervoltage Lockout

s 500mA Minimum Continuous Load

Current Per Switch

s 1.25A Short Circuit Current Limit

s 140mΩ Maximum On-Resistance

s 100µA On-State Supply Current

s 1µA Shutdown Current

s Output Can Be Forced Higher Than

Input (Off-State)

s Thermal Shutdown

s 1ms Soft-Start Power Up

s Active-High Version: SP2026-1

s Active-Low Version: SP2026-2

DESCRIPTION

The SP2026 is a dual +2.7V to +5.5V supervisory power control switch that is current limited

to 1.25A and has thermal shutdown to protect itself and the load. A device is disabled in

thermal shutdown until the excessive current load is removed, the appropriate enable pins are

toggled, or the die temperature cools to 120°C. The undervoltage lockout feature disables the

output switches until a valid input voltage, VIN = 2.4V, is present. Once a valid input voltage

is present and the SP2026 is enabled, a 1ms soft start prevents momentary voltage drops

caused by charging a capacitive load. The SP2026 has a low on resistance, 100mΩ, and

supplies a 500mA minimum output current per switch. In overcurrent and thermal shutdown,

error flags may be asserted for overtemperature.

Rev. 1/23/02

ENA 1

FLGA 2

FLGB 3

ENB 4

®

SP2026

8 OUTA

7 IN

6 GND

5 OUTB

SP2026 +2.7V to +5.5V USB Power Control Switch

1

© Copyright 2002 Sipex Corporation

Share Link: