RE024 dual mode Drop (LDO) voltage regulator macrocell with fixed 2.8V

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RE024 dual mode Drop (LDO) voltage regulator macrocell with fixed 2.8V

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Dual Mode Drop Voltage Regulator 2.8V Fixed Output Voltage 5.5V Supply Operation Maximum Load Current Full Power Mode Maximum Current Consumption Full Power Mode Power Mode Power-down Mode Consumption Less Than More Than 70dB (Typical) PSRR µVRMS Output Noise 0.35 CMOS Technology Typical Application: Baseband Memory Section Supply Mobile Terminals
RE024 dual mode Drop (LDO) voltage regulator macrocell with fixed 2.8V output voltage, rated loads full power mode power mode. (Both modes selected signal.) designed integrated with other analog cells, digital logic, microcontrollers, cores memory blocks into system-on-chip products. circuit consists PMOS pass device, error amplifier feedback resistive network, sized achieve required closed loop gain. These blocks make regulating loop. over-current short circuit protection circuit been included limit output current delivered regulator, thus avoiding destruction case short circuit. external reference voltage (bandgap voltage) necessary correct functionality. target reference voltage 1.231V delivered, example, BG019. Double pads supply voltage VBAT2C/VBAT2CC output voltage VMEMA/VMEMAA used reduce total output resistance. Current reference generated inside cell through circuit supplied 2.5V 0.1V regulated input voltage SAUVC. Remote sense terminal VMEMS provides regulation load connecting output terminal near critical point improve performance regulator (e.g., connecting package double-bonding, thus avoiding bonding resistance influence). ceramic capacitor connected from VMEMA/VMEMAA ground needed external compensation. low-leakage current switch been added charge second external capacitor (2.2 VMEMA/VMEMAA. This voltage, called VBACKUP used guarantee minutes operation time internal system clock calendar backup mode when main battery unplugged. Figure Symbol
VSAUVC VBAT2C VBAT2CC VMEMA
BACKUPON
Embedded ASIC Macrocell: Power Management Mobile Terminals (PM) RE024 2.8V Dual Mode Regulator
VMEMAA VMEMS VBACKUP
VMEMC
GND2
VBACKUPC
Note:
names written they appear user screen when symbol opened design tool environment.
Rev. 2703B-PMGMT-02/03
Functional Diagram
Figure Functional Diagram
BAT2C BAT2CC
GND2
VMEMC VMEMA BACKUPON VMEMAA VBACKUP
GND2
Current Sensing Limiting
VBACKUPC VMEMS
GND2
SAUVC
IBIAS
ON2,
GND2
GND2
Name VBAT2C VBAT2CC VMEMA VMEMAA VMEMS VMEMC VBACKUP VBACKUPC GND2 VSAUVC BACKUPON Power Supply Power Supply Analog Output Analog Output Analog Input Analog Output Analog Input Analog Output Analog Ground Positive Power Supply Analog Input Digital Input Digital Input Digital Input Type External External External External External Internal External Internal Internal Internal Internal Internal Internal Internal Function Power Supply Power Supply Output Voltage Output Voltage Sense Voltage Output Voltage Backup Voltage Internal Backup Voltage Ground Power Supply Voltage Reference Enable Command Power Mode Command Backup Mode Command Value 5.5V 5.5V 2.75V 2.75V 2.9V 2.75V 2.9V 2.75V 2.9V 2.75V 2.9V 2.75V 2.9V 2.5V 0.1V 1.231V VBAT2C/VBAT2CC VBAT2C/VBAT2CC VBAT2C/VBAT2CC
RE024 2.8V Dual Mode Regulator
2703B-PMGMT-02/03
RE024 2.8V Dual Mode Regulator
Absolute Maximum Ratings*
Analog Signals -0.3V 6.5V Digital Signals. -0.3V 5.5V Output Current.Internally limited Junction Temperature .-20°C 150°C
*NOTICE: Stresses beyond those listed under "Absolute Maximum Ratings" cause permanent damage device. This stress rating only functional operation device these other conditions beyond those indicated operational sections this specification implied. Exposure absolute maximum rating conditions extended periods affect device reliability.
Electrical Specifications(1)
-20°C 125°C, VBAT2C/VBAT3CC 5.5V unless otherwise specified, output capacitance Table Electrical Characteristics
Symbol VBAT2C/VBAT2CC VSAUVC Parameter Operating Supply Voltage Auxiliary Operating Supply Voltage Temperature Range Full Power Mode VMEMA/VMEMAA IMEMA/IMEMAA VTRAN VTRAN Output Voltage Output Current Quiescent Current Line Regulation Transient Line Regulation Load Regulation Transient Load Regulation IMEMA/IMEMAA IMEMA/IMEMAA rise time fall time IMEMA/IMEMAA IMEMA/IMEMAA rise time fall time @100 VBAT2C/ VBAT2CC @100 @100 PSRR Power Supply Rejection Ratio Full Load VBAT2C/ VBAT2CC 4.25V @100 @100 VBAT2C/ VBAT2CC 5.5V @100 Output Noise(3) Bandwidth 2.75 2.85 µVRMS Condition Unit
2703B-PMGMT-02/03
Table Electrical Characteristics (Continued)
Symbol Parameter Rise Time Shut Down Current Short-circuit Current Threshold Power Mode VMEMA/VMEMAA IMEMA/IMEMAA VTRAN Output Voltage Output Current Quiescent Current Line Regulation Transient Line Regulation VBAT2C/VBAT2CC 3.4V IMEMA/IMEMAA VBAT2C/VBAT2CC 3.4V IMEMA/IMEMAA rise time fall time IMEMA/IMEMAA IMEMA/IMEMAA rise time fall time @100 VBAT2C/ VBAT2CC @100 @100 PSRR(2) Power Supply Rejection Ratio Full Load VBAT2C/ VBAT2CC 4.25V @100 @100 VBAT2C/ VBAT2CC 5.5V @100 Notes: Output Noise(3) Rise Time Shut Down Current Short-circuit Current Threshold Bandwidth Full Load VMEMA/VMEMAA 10.5 2.72 Condition Full Load VMEMA/VMEMAA Unit
VTRAN
Load Regulation Transient Load Regulation
VRMS
Obtained considering parasitics TFBGA100 Package. This parameter shows immunization circuit taking into account voltage ripple battery voltage different frequencies shown. Obtained using BG019 reference voltage generator.
RE024 2.8V Dual Mode Regulator
2703B-PMGMT-02/03
RE024 2.8V Dual Mode Regulator
Control Modes
digital signals referred supply voltage VBAT. Table Truth Table
VMEMA/VMEMAA Power down (High-Z) Power Full Power Mode VMEMA/VMEMAA 2.8V Power Power Mode VMEMA/VMEMAA 2.8V
Table Backupon Truth Table
BACKUPON VBACKUP Backup Mode Backup Switch Closed VBACKUP VMEMA/VMEMAA
Application Example
ceramic capacitor with between connected from VMEMA/VMEMAA ground needed external compensation. ceramic capacitor with value between 10µF connected between VBACKUP Ground used backup supply.
Description Capacitor (CL) Backup Battery (CBCK) Units
Figure Application Example
2.5V Regulator (e.g., RE031)
2.5V
VSAUVC
VBAT2C VBAT2CC
1.231V Bandgap (e.g., BG019)
VMEMA VMEMAA VMEMS
Battery Pack
Digital Core
BACKUPON VMEMC GND2
VBACKUP VBACKUPC
CBCK
2703B-PMGMT-02/03
Typical Performance Characteristics (Conditions specified page
Note. these graphs: Output Voltage refers VMEMA/VMEMAA Battery Voltage refers VBAT2C/VBAT2CC Output Current refers IMEMA/IMEMAA
Static Line Regulation Full Load Full Power Mode
5.5V 4,25V
Output Voltage Change [mV]
Battery Voltage
Transient Line Regulation Full Load Full Power Mode 2.800 2.795 Output Voltage 2.790 2.785 2.780 2.775
2.775
2.805 2.800 2.795 2.790 2.785 2.780 5,5V 4,25V
2.770 0.35
0.45 Time [ms]
0.55
2.770 0.35 0.45
0.55
RE024 2.8V Dual Mode Regulator
2703B-PMGMT-02/03
RE024 2.8V Dual Mode Regulator
Typical Performance Characteristics (Conditions specified page
ctio
ctio
1000
10000
100000
Freq
Freq 100K
4,25V
5,5V
Freq 100Hz Freq
-100
4.25V
ctru 4.25V
1.0E
Total output nois 1.0E
[µs]
1.0E
1.0E 1000
10000
100000
2703B-PMGMT-02/03
Typical Performance Characteristics (Conditions specified page
Static Line Regulation Full Load Power Mode
Output Voltage Change [mV]
-0.5 -1.0 -1.5 Battery Voltage
5,5V
,25V
Transient Line Regulation Full Load Power Mode
2.800
4,25V
5,5V
2.799 Output Voltage
2.798
2.797
2.796
2.795 0.35
0.45 Time [ms]
0.55
RE024 2.8V Dual Mode Regulator
2703B-PMGMT-02/03
RE024 2.8V Dual Mode Regulator
Typical Performance Characteristics (Conditions specified page
ctio
ctio
1000
10000
100000
4,25V
Freq Freq Freq Freq
5,5V
-100
4.25V
ctru 4.25V
1.0E
1.0E
Total utput Nois 204µV
[µs]
1.0E
1.0E
1.0E 1000
10000
100000
2703B-PMGMT-02/03
Terminology
Line Regulation Measures maximum transient variations output voltage RE024 when supply changes between specified values with fixed load current; minimum rise time fall time Figure Line Regulation
3.4V VBAT2C/VBAT2CC
VMEMA/VMEMAA VTRAN
Load Regulation
Measures maximum transient variations output voltage RE024 when load current changes between specified values with fixed power supply; minimum rise time fall time Figure Load Regulation
IMEMA/IMEMAA IMEMA/IMEMAA IMEMA/IMEMAA
VMEMA/VMEMAA
VTRAN
RE024 2.8V Dual Mode Regulator
2703B-PMGMT-02/03
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2703B-PMGMT-02/03

RE024 dual mode Drop (LDO) voltage regulator macrocell with fixed 2.8V

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