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Features
* * * * * * * * * *
Dual Mode Low Drop Out Voltage Regulator Programmable Output Voltage Ranging from 1.75V to 2.1V 3V to 5.5V Supply Operation 180 mA Maximum Load Current in Full Power Mode Maximum Current Consumption 70 A in Full Power Mode and 15 A in Low Power Mode Power-down Mode Consumption Less Than 1 A More Than 70dB (Typical) PSRR at 1 KHz 100 V RMS Output Noise in Full-power Mode 0.35 m CMOS Technology Typical Application: Baseband Section Supply in Mobile Terminals
Description
RE030 is a dual mode Low Drop Out (LDO) voltage regulator macrocell with programmable output voltage ranging from 1.75V to 2.1V, rated for loads up to 180 mA in full power mode and 5 mA in low power mode. (Both modes can be selected by the LP9 signal.) It is designed to be integrated with other analog cells, digital logic, microcontrollers, DSP cores and memory blocks into system-on-chip products. The circuit consists of a PMOS pass device, an error amplifier and a feedback resistive network, sized to achieve the required closed loop gain. These blocks make up the regulating loop. An over-current and short circuit protection circuit has been included to limit the output current delivered by the regulator, thus avoiding destruction in case of a short circuit. An external reference voltage VBG (bandgap voltage) is necessary for correct functionality. The target reference voltage is 1.231V delivered, for example, by BG019. Double pads on the supply voltage V BAT1A/V BAT1AA and output voltage V COREA /V COREAA are used to reduce the total output resistance. Current reference is generated inside the cell through a circuit supplied by a 2.5V 0.1V of regulated input voltage on VSAUVC. Remote sense terminal VCORES provides regulation of the load by connecting it to the output terminal near a critical point to improve performance of the regulator (e.g., connecting it to the package pin by double-bonding, thus avoiding the bonding resistance influence). A ceramic capacitor of 2.2 F connected from VCOREA/VCOREAA to ground is needed as external compensation. Figure 1. Symbol (1)
Embedded ASIC Macrocell: Power Management RE030 1.75V to 2.1V 180 mA Dual Mode LDO Regulator
Note:
1. Pin names are written as they appear on the user screen when the symbol is opened in the design tool environment.
Rev. 2706A-PMGMT-10/02
1
Functional Diagram
Figure 2. Functional Diagram
VBAT1A VBAT1AA
V BG ON9
ON9 LP9
ON9 LP9
V BG ON9
GND1
VCOREC VCOREA VCOREAA
GND1
ON9 LP9
Current Sensing and Limiting
VCORES
GND1
R11
R12
V
SAUVC
R21 ON9 IBIAS ON9, HPVREG9
R22
ON9, LPVREG9
GND1
GND1
GND1
Pin Description
Pin Name VBAT1A VBAT1AA VCOREA VCOREAA VCORES VCOREC GND1 VSAUVC VBG ON9 LP9 HPVREG9<1:0> LPVREG9 I/O Power Supply Power Supply Analog Output Analog Output Analog Input Analog Output Ground Power Supply Analog Input Digital Input Digital Input Digital Input Digital Input Type External Pad External Pad External Pad External Pad External Pad Internal Pin Internal Pin Internal Pin Internal Pin Internal Pin Internal Pin Internal Pin Internal Pin Function Power Supply Power Supply Output Voltage Output Voltage Sense Voltage Output Voltage Ground Power Supply Voltage Reference Enable Command Full/Low Power Selection Full Power Output Voltage Selection Low Power Output Voltage Selection Value 3V to 5.5V 3V to 5.5V 1.75V to 2.1V 1.75V to 2.1V 1.75V to 2.1V 1.75V to 2.1V 0 2.5V 0.1V 1.231V 0V or VBAT1A/VBAT1AA 0V or VBAT1A/VBAT1AA 0V or VBAT1A/VBAT1AA 0V or VBAT1A/VBAT1AA
2
RE030 1.75/2.1V 180 mA Dual Mode LDO Regulator
2706A-PMGMT-10/02
RE030 1.75/2.1V 180 mA Dual Mode LDO Regulator
Absolute Maximum Ratings*
Analog Signals ....................................... -0.3V to 6.5V Digital Signals......................................... -0.3V to 5.5V Output Current................................... Internally limited Junction Temperature ..........................-20C to 150C
*NOTICE: Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Electrical Specifications(1)
TJ = -20C to 125C, VBAT1A/VBAT1AA = 3V to 5.5V unless otherwise specified, output capacitance = 2.2 F. Table 1. Electrical Characteristics
Symbol VBAT1A/VBAT1AA VSAUVC TJ Parameter Operating Supply Voltage Auxiliary Operating Supply Voltage Temperature Range Full Power Mode VCOREA/V COREAA Output Voltage 2.1V programmed 2.01V programmed 1.88V programmed 1.75V programmed ICOREA/ICOREAA IQQ VDC VTRAN Output Current Quiescent Current Line Regulation Transient Line Regulation VBAT1A/VBAT1AA= 3V to 3.4V; ICOREA/ICOREAA = 180 mA VBAT1A/VBAT1AA = 3V to 3.4V; ICOREA/ICOREAA = 180 mA rise time = fall time = 5 s 10% to 90% of max ICOREA/ICOREAA; 10% to 90% of max ICOREA/ICOREAA; rise time = fall time = 5 s 2 2 2.04 1.96 1.82 1.7 2.1 2.01 1.88 1.75 2.16 2.06 1.94 1.8 180 70 3 3 mA A mV mV V Condition Min 3 2.4 -20 2.5 Typ Max 5.5 2.6 125 Unit V V C
VDC VTRAN
Load Regulation Transient Load Regulation
2 5
3 7
mV mV
3
2706A-PMGMT-10/02
Table 1. Electrical Characteristics (Continued)
Symbol Parameter Condition @100 Hz VBAT1A/ VBAT1AA = 3V @1 kHz @20 kHz @100 kHz @100 Hz PSRR Power Supply Rejection Ratio at Full Load VBAT1A/ VBAT1AA = 4.25V @1 kHz @20 kHz @100 kHz @100 Hz VBAT1A/ VBAT1AA = 5.5V @1 kHz @20 kHz @100 kHz VN(2) TR ISD ICC Output Noise Rise Time Shut Down Current Short-circuit Current Low Power Mode VCOREA/V COREAA Output Voltage 1.8V programmed 2V programmed ICOREA/ICOREAA IQQ VDC VTRAN Output Current Quiescent Current Line Regulation Transient Line Regulation VBAT1A/VBAT1AA= 3V to 3.4V; ICOREA/ICOREAA = 5 mA VBAT1A/VBAT1AA = 3V to 3.4V; ICOREA/ICOREAA = 5 mA rise time = fall time = 5 s 10% to 90% of max ICOREA/ICOREAA 10% to 90% of max ICOREA/ICOREAA; rise time = fall time = 5 s 2 2 1.7 1.9 1.8 2 1.9 2.1 5 15 3 3 mA A mV mV V 330 Bandwidth = 10 Hz to 100 kHz; ICOREA/ICOREAA = 180 mA 100% of ICOREA/ICOREAA; 10% to 90% of VCOREA/VCOREAA Min Typ -63 -63 -49 -35 -64 -64 -56 -43 -61 -61 -56 -43 77 100 60 1 400 Max Unit dB dB dB dB dB dB dB dB dB dB dB dB VRMS s A mA
VDC VTRAN
Load Regulation Transient Load Regulation
4 2
6 5
mV mV
4
RE030 1.75/2.1V 180 mA Dual Mode LDO Regulator
2706A-PMGMT-10/02
RE030 1.75/2.1V 180 mA Dual Mode LDO Regulator
Table 1. Electrical Characteristics (Continued)
Symbol Parameter Condition @100 Hz VBAT1A/ VBAT1AA = 3V @1 kHz @20 kHz @100 kHz @100 Hz PSRR Power Supply Rejection Ratio at Full Load VBAT1A/ VBAT1AA = 4.25V @1 kHz @20 kHz @100 kHz @100 Hz VBAT1A/ VBAT1AA = 5.5V @1 kHz @20 kHz @100 kHz VN(2) TR ISD ICC Notes: Output Noise Rise Time Shut Down Current Short-circuit Current 1. Obtained by considering the parasitics of a TFBGA100 Package. 2. Obtained by using BG019 as reference voltage generator. 330 Bandwidth = 10 Hz to 100 kHz; ICOREA/ICOREAA = 5 mA 100% of ICOREA/ICOREAA ; 10% to 90% of VCOREA/VCOREAA Min Typ -69 -69 -66 -52 -57 -57 -57 -53 -44 -44 -45 -48 110 150 270 1 400 Max Unit dB dB dB dB dB dB dB dB dB dB dB dB VRMS s A mA
5
2706A-PMGMT-10/02
Control Modes
All digital signals are referred to the supply voltage VBAT1A, VBAT1AA. Table 2. Truth Table
ON9 0 1 1 1 1 1 1 LP9 X 0 0 0 0 1 1 HPVREG[1] X 0 0 1 1 X X HPVREG[0] X 0 1 0 1 X X LPVREG X X X X X 0 1 VCOREA/VCOREAA Power down (High-Z) Power on, Full Power 1.75V Power on, Full Power 2.01V Power on, Full Power 1.88V Power on, Full Power 2.1V Power on, Low Power 1.8V Power on, Low Power 2V
Application Example
A ceramic capacitor (CL) of 2.2 F with ESR between 20 m and 250 m connected from VCOREA/VCOREAA to ground is needed for external compensation.
Description Capacitor (CL) Min 1.8 Typ 2.2 Max 2.6 Units F
Figure 3. Application Example
2.5V Regulator (e.g., RE031)
2.5V
VSAUVC
VBAT1A VBAT1AA
1.231V Bandgap (e.g., BG019)
VBG VCOREA VCOREAA VCORES
Battery Pack
CL
Digital Core
ON9 LP9 HPVREG9[1:0] LPVREG9 VCOREC
GND1
6
RE030 1.75/2.1V 180 mA Dual Mode LDO Regulator
2706A-PMGMT-10/02
RE030 1.75/2.1V 180 mA Dual Mode LDO Regulator
Typical Performance Characteristics (Conditions specified on page 11)
Note:
In these graphs: - - - Output Voltage (VCORE) refers to VCOREA/VCOREAA Battery Voltage (VBAT) refers to VBAT1A/VBAT1AA Output Current (ICORE) refers to ICOREA/ICOREAA
Full-power Mode
Static Line Regulation at Full Load 0.25 Output Voltage Change [mV]
2.0
S ta ti c L o a d Re g u la tio n a t F u ll L o a d
0.00
O u tp u t V o l ta g e Ch a n g e [m V ]
1.5
1.0 V BAT = 5.5V 0.5 V BAT = 4.25V V B AT = 3V
-0.25
0.0
-0.50
-0.5
-0.75 3 3.5 4 4.5 5 5.5 Input Voltage [V]
-1.0 0 30 60 90 120 150 180
O u tp u t C u rre n t [m A ]
Transient Line Regulation at Full Load 1.25 1.00 0.75 0.50 0.25 0.00 -0.25 -0.50 -0.75 -1.00 -1.25 0.35 0.4 0.45 0.5 0.55 Time [ms] 0.6 0.65 0.7 0.75
O u tp u t V o lta g e Ch a n g e [V ]
T ra n sie n t L o a d R e g u l a ti o n
4 3 2 1 0 -1 -2 V BAT = 5.5V -3 -4 0.35 0.45 0.55
T i m e [m s]
Output Voltage Change [V]
V BA T = 3V
V BAT = 4.25V
0.65
0.75
7
2706A-PMGMT-10/02
Typical Performance Characteristics (Conditions specified on page 11)
P o w e r S u p p ly R e je ctio n R a tio a t F u ll L o a d
P o w e r S u p p l y R e j e ctio n Ra ti o a t F u l l L o a d
10 -40
100
1000
10000
100000
3.0 3.5
ve rsu s I n p u t V o l ta g e
4.0
4.5
5.0
5.5
-50 V BA T = 4.25V
P S R R [d B ]
-50
V B AT = 5.5V
P S RR [d B]
V B AT = 3V -60
-70
Freq = 1 k Hz F req = 100 k Hz
-70
-90
Freq = 20 k Hz
Freq = 100 Hz
-80
F re q u e n cy [H z ]
-110
I n p u t V o l ta g e [V ]
L D O S ta rtup a t F ul l L oa d a n d V B AT = 4.25 V
O u tp u t N o i se S p e ctru m a t F u ll L o a d a n d V B AT = 4. 25V
5. 0 4. 5 4. 0 3. 5
V o lta g e [V ]
1E -10
O u tp u t N o ise [V /sq rt(Hz )]
1E -11
Total output nois e 77 V R MS
3. 0 2. 5 2. 0 1. 5 1. 0 0. 5 0. 0 0 25
O N9
V C OR E
1E -12
1E -13
1E -14
50
T im e [s]
75
100
10
100
1000
F re q u e n cy [H z ]
10000
100000
8
RE030 1.75/2.1V 180 mA Dual Mode LDO Regulator
2706A-PMGMT-10/02
RE030 1.75/2.1V 180 mA Dual Mode LDO Regulator
Typical Performance Characteristics (Conditions specified on page 11)
Low-power Mode
S ta tic L oa d Re g ula tio n a t Fu ll L o a d
Static Line Regulation at Full Load
0.25
O u tpu t V olta g e Cha ng e [m V ]
5 4 V BA T = 5.5V 3 2 1 0 -1 -2 V B A T = 4.25V V B A T = 3V
0.00 Output Voltage Change [mV] -0.25 -0.50 -0.75 -1.00 -1.25 -1.50 -1.75 -2.00 3 3.5 4 4.5 5 5.5
-3 0 1 2 3 4 5
Input Voltage [V]
O u tp u t Cu rre n t [m A]
Transient Line Regulation at Full Load
0.6
T ra n sie nt L o a d R e g u la tion
2
Output Voltage Change [V]
0.4
O u tpu t V o lta g e C ha n g e [V ]
1
0.2
0 V B AT = 5.5V -1
0.0
V B A T = 3V
-0.2
V B A T = 4.25V
-0.4 0.35
0.4
0.45
0.5
0.55
0.6
0.65
0.7
0.75
-2 0.35 0.45 0.55
Tim e [m s]
Time [ms]
0.65
0.75
9
2706A-PMGMT-10/02
Typical Performance Characteristics (Conditions specified on page 11)
P o w e r S u p p ly R e je ctio n R a tio a t F u l l L o a d
P o w e r S u p p l y R e je ctio n R a ti o a t F u l l L o a d ve rsu s In p u t V o l ta g e
10000 0
10 -40
100
1000
10000
3.00 -50
V BA T = 5. 5V
3.50
4.00
4.50
5.00
5.50
-50
P S RR [d B ]
-70
P S R R [d B ]
V B A T = 4.25V
V B AT = 3V -60
-90 F req = 100 kHz Freq = 20 k Hz -110 Freq = 1 k Hz Freq = 100 Hz
-70
-80
F re q u e n cy [H z ]
-130
I n p u t V o lta g e [V ]
L DO S ta rtu p a t F u ll L o a d a n d V B AT = 4.2 5V
O u tp ut N oi se S p e c tru m a t F ul l L oa d a n d V B AT = 4. 25V
5.0 4.5 4.0 3.5
V olta g e [V ]
O utp ut N oi se [V /sqrt(H z )]
1E -10
1E -11
Total output nois e 110 V R MS
3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 25
O N9
V C OR E
1E -12
1E -13
1E -14
50
75
T im e [ s]
100
125
150
10
100
1000
Fre qu e n cy [H z ]
10000
100000
10
RE030 1.75/2.1V 180 mA Dual Mode LDO Regulator
2706A-PMGMT-10/02
RE030 1.75/2.1V 180 mA Dual Mode LDO Regulator
Terminology
Line Regulation
Measures the maximum transient and DC variations of the output voltage of the RE030 when the supply changes between two specified values with fixed load current; minimum rise time and fall time is 5 s. Figure 4. Line Regulation
3.4V VBAT1A/VBAT1AA
3V 5 s
VCOREA/VCOREAA VTRAN
5 s
VDC
Load Regulation
Measures the maximum transient and DC variations of the output voltage of the RE030 when the load current changes between two specified values with fixed power supply; minimum rise time and fall time is 5 s. Figure 5. Load Regulation
90% of max ICOREA/ICOREAA ICOREA/ICOREAA 10% of max ICOREA/ICOREAA
5 s
5 s
VTRAN VCOREA/VCOREAA VDC
11
2706A-PMGMT-10/02
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2706A-PMGMT-10/02 0M

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