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LP3971 데이터시트(PDF) 3 Page - Texas Instruments

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부품명 LP3971
상세설명  Power Management Unit for Advanced Application Processors
PDF  52 Pages
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI1 - Texas Instruments

LP3971 데이터시트(HTML) 3 Page - Texas Instruments

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background image
Cchg_det
4.7 PF
VIN
DC SOURCE
4.5 ± 5.5V
Li-ion/polymer cell
+
OSC
PGND3
Logic Control
and registers
I2C
PGND1
VoutLDO2
Cldo1
1.0 PF
LDO2
SW2
VFB2
BUCK3
SW3
vref
PGND2
PWR_ON
Cvrefh
10 nF
VREF
Cvdd
4.7 PF
SYNC
VDDA
BUCK1
BUCK2
Lsw2 2.2 PH
SW1
VFB1
LDO3
LDO4
LDO5
RTC
SRAM
PLL
CODEC
SYS_EN
PWR_EN
RESET
Clock
divider
VoutLDO3
VoutLDO4
VoutLDO5
EOC
nTEST_JIG
SPARE
EXT_WAKEUP
nRSTI
GND1
VinLDO4
VinBUBATT
VoutLDO_RTC
nBATT_FLT
nRSTO
VinLDO5
GPIO1/nCHG_EN
GPIO2
BGND1,2,3
UART
CPU
CORE
Wake up
LDORTC
VFB3
BIAS
Thermal
Shutdown
Power On
Reset
Lsw1 2.2 PH
Lsw3 2.2 PH
Internal HW reset for
test purposes
VoutLDO_RTC
SYS_EN
VIN
Vout Switch
VIN
6
27
35
40
20
31
AP_IO
USB
BG
MVT
37
39
5
19
28
36
23
32
12
13
25
16
15
9
8
1
29
11
2
3
30
38
18
33
34
10
14
26
I2C_SDA
I2C_SCL
VBUCK2
22
21
24
4
17
COMP
LDO1
VoutLDO1
7
PWR_EN
Vout
Switch
See notes
3.3V
See notes
VDDA
10 PF
CldoRTC
1.0 PF
Cldo5
0.47 PF
Power
ON-OFF
Logic
10k
10k
APPLICATION
PROCESSOR
LP3971 PMIC
Cldo4
0.47 PF
Cldo3
0.47 PF
Cldo2
0.47 PF
10 PF
10 PF
LP3971
www.ti.com
SNVS432V – JANUARY 2006 – REVISED MAY 2013
•
The I2C lines are pulled up via a I/O source
•
VINLDO4, 5 can either be powered from main battery source, or by a buck regulator or VIN.
Figure 2.
Copyright © 2006–2013, Texas Instruments Incorporated
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Product Folder Links: LP3971



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