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ADP3405 Datasheet(PDF) 6 Page - Analog Devices

Part # ADP3405
Description  GSM Power Management System
Download  12 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

ADP3405 Datasheet(HTML) 6 Page - Analog Devices

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ADP3405
–6–
REV. 0
Table I. LDO Control Logic
Inputs
Outputs
UVLO
CHRON
PWRONKEY
PWRONIN
ANALOGON
VRTC
VCC
VCCA
REFOUT
VTCXO
L
X
X
X
X
Off
Off
Off
Off
Off
H
H
XX
X
On
On
On
On
On
HX
L
X
X
On
On
On
On
On
H
L
H
L
X
On
Off
Off
Off
Off
HL
H
H
L
On
On
Off
Off
Off
HL
H
H
H
On
On
On
On
On
X = Don’t care
Bold denotes the active control signal.
CHARGER
ON
THRESHOLD
OVER
TEMP
EN
REF
BUFFER
VBAT
VREF
EN
GND
PG
OUT
DIGITAL LDO
VCC
2.45V
DGND
VRTC
2.45V
VBAT
EN
GND
OUT
VBAT
VREF
EN
GND
OUT
POWER GOOD
RTC LDO
XTAL OSC LDO
ANALOG LDO
VBAT
VREF
EN
GND
OUT
REFOUT
AGND
VCCA
2.765V
VTCXO
2.765V
+
1.210V
UVLO
ADJ
UVLO
VBAT
PWRONKEY
ROWX
PWRONIN
RESCAP
RESET
CHRON
ANALOGON
SIMBAT
CAP+
CAP–
SIMPROG
SIMON
SIMGND
RESETIN
CLKIN
DATAIO
CHARGE
PUMP
LOGIC
LEVEL
TRANSLATION
VSIM
RST
CLK
I/O
EN
3V/5V
20k
EN
ADP3405
RESET
GENERATOR
GND
Figure 1. Functional Block Diagram
Table II. VSIM Control Logic
Inputs
Outputs
VCC
RESET
SIMON
SIMPROG
VSIM
Off
L
X
X
Off
On
L
X
X
Off
On
H
L
X
Off
On
H
H
L
3 V
On
H
H
H
5 V
X = Don’t care


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