BQ4802LYPWG4

$4.09

Description：IC RTC CLK/CALENDAR PAR 28TSSOP
Series：-

SKU:d48f4418eadc Category: Real Time Clocks Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC RTC CLK/CALENDAR PAR 28TSSOP
Series：-
Package：Tube
Mfr：Texas Instruments
Type：Clock/Calendar
Features：Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
Memory Size：-
Time Format：HH:MM:SS (12/24 hr)
Date Format：YY-MM-DD-dd
Interface：Parallel
Voltage - Supply：2.7V ~ 3.6V
Voltage - Supply, Battery：2.4V ~ 4V
Current - Timekeeping (Max)：1.5mA (Typ) @ 2.7 V ~ 3.6 V
Operating Temperature：0°C ~ 70°C
Mounting Type：Surface Mount
Package / Case：28-TSSOP (0.173", 4.40mm Width)
Supplier Device Package：28-TSSOP

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BQ4802LYPWG4

Overview

The BQ4802LYPWG4 is a parallel real-time clock (RTC) integrated circuit manufactured by Texas Instruments. It features an internal lithium battery backup switch and non-volatile SRAM for data retention. The device supports calendar and timekeeping functions with formats YY-MM-DD-dd and HH:MM:SS. It operates within a supply voltage range of 4.5 V to 5.5 V and includes alarm, watchdog timer, and leap year compensation capabilities. The component is housed in a 28-pin TSSOP package.

Feature Summary

Parallel RTC interface with 16-byte NV SRAM
Internal lithium battery backup switching
Calendar and clock with alarm and watchdog timer
RoHS compliant and lead-free construction

Applications

Industrial control systems requiring precise timekeeping
Data logging equipment with power loss protection
Embedded systems needing calendar functionality

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and lead-free status as per Texas Instruments documentation. Confirm availability status, as related models in this series have been subject to discontinuation notices. Ensure compatibility with existing PCB footprints for the 28-TSSOP package during procurement planning.

Selection Notes

Select this component when a parallel interface is required for direct CPU connection without additional serial-to-parallel conversion logic. The internal battery switch simplifies design compared to external switching solutions. Verify that the 4.5V to 5.5V operating voltage aligns with the system's main power rail.

Part Context

This part belongs to the BQ4802Y family of parallel RTCs from Texas Instruments. The 'LY' designation typically refers to specific temperature or feature variants within the family, while 'G4' denotes environmental compliance. It serves as a standalone timekeeping solution for microprocessor-based systems.

Replacement Considerations

Direct pin-to-pin replacements may be limited due to the discontinued status of similar parallel RTCs. Check for updated Texas Instruments recommendations or equivalent parts from other manufacturers such as Maxim Integrated, ensuring interface compatibility.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

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Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

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Mode of Transportation

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Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.