MT6305B 查看數據表（PDF） - MediaTek Inc
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MT6305B Datasheet PDF : 34 Pages
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Confidential Information
MT6305B
Detailed Description Overview
The MT6305 is a power management chip optimized for use with GSM baseband chipsets in handset applica-
tions. Figure 1 shows the block diagram of the MT6305.
The MT6305 contains several blocks:
n Seven Low Dropout Regulators (Core, Digital
IO, Analog, Crystal Oscillator, Real -Time
Clock, Memory, SIM)
n SIM Card Interface
n Vibrator, Alerter, and LED Drivers
n Power Sequence and Prote ction Logic
n Reset Ge nerator
n Undervoltage Lockout
n Deep Di scharge Lockout
n Battery Charge r
VD_VRTC_SEL
3 VCORE 1.8/1.2V
VRTC 1.5/1.2V
SELECTION
UVLO
32
PWRKEY
PWRBB 33
VMSEL 45
CHARGER
DETECT
12
SIMVCC
CHRDET 6
43
BATDET
SRCLKEN 31
1
CHRIN
GATEDRV 2
ISENSE 4
5
CHRCNTL
7
BATSNS
BATUSE 42
VASEL 44
13
SIMSEL
CHRON
BATTERY
CHARGER
DDLO
OVER
TEMP
14
SIO
SRST 15
16
SCLK
SIM
LOGIC
LEVEL
SHIFTER
RESET
GENERATOR
DIGITAL CORE LDO
VBAT
48
VREF OUT
EN DGND
VCORE
DIGITAL IO LDO
VBAT
VREF
OUT
EN DGND
20
VIO
MOMORY LDO
VBAT
VREF
EN
OUT
VSEL
DGND
18
VM
SIM LDO
VBAT
VREF
EN
OUT
VSEL
DGND
8
VSIM
RTC LDO
VBAT
VREF OUT
EN DGND
ANALOG LDO
VBAT
VREF
OUT
EN AGND
22
VRTC
26
AVBAT
27 VA
TCXO LDO
VBAT
VREF
OUT
EN AGND
25
VTCXO
REFERENCE
VBAT
OUT
EN AGND
2390 VREF
28
AGND
17,21,46
DGND
Figure 1. Functional Block Diagram
MediaTek Confidential
Revision 1.1–Apr. 22, 2005
© 2002 MediaTek Inc.
The information contained in this document can be modified without notice
Page 23 of 33
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