MT6305 Просмотр технического описания (PDF) - Unspecified

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Компоненты Описание

производитель

MT6305

GSM Power Management System

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Confidential Information

MT6305B

Product Change Notice

Original product name : MT6305N/FT

New identification : MT6305BN/CY

Change Contents

Item Change type

Description

Reason for change

1

New function Use pin#3 (original NC pin) to program Provide alternative

VCORE/VRTC. VCORE/VRTC=1.8V/1.5V VCORE/VRTC volt-

as pin#3 is floating.

age.

VCORE/VRTC=1.2V/1.2V as pin#3 is

GND.

2

Device protec- CHRIN can be up to 15V but the charger To protect internal

tion

will be off automatically when

device.

CHRIN>Vac_limit. The spec. of Vac_limit

is 8~9.5V.

It can’t be used with external linear

charger.

3

Pin configura- Change pin#29 (original NC pin) to VREF. Better power/ground

tion

plan.

4

Pin configura- Change pin#30 (original VREF) to NC pin. Better power/ground

tion

It can be connected to a capacitor, GND or plan.

floating.

5

Pin description Remove the VASEL (pin44) and VMSEL Save power.

(pin45) internal pull high/low definition.

Special request on PCB

Ø It must use X5R-type decoupling capacitor on VTCXO and VA LDO outputs for good

performance against temperature variation.

Ø In VCORE/VRTC=1.8V/1.5V application, no special change is required to use

MT6305BN/CY. It’s fully compatible with the PCB for MT6305N/FT. If user would like

to configure VCORE/VRTC=1.2V/1.2V, just tie pin#3 to GND via a 0-Ohm resistor.

MediaTek Confidential

Revision 1.1–Apr. 22, 2005

© 2002 MediaTek Inc.

The information contained in this document can be modified without notice

Page 2 of 33

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