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ADP5134 の電気的特性と機能
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ADP5134のメーカーはAnalog Devicesです、この部品の機能は「1200 mA Buck Regulators and Two 300 mA LDO Regulators」です。 |
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製品の詳細 ( Datasheet PDF )
| 部品番号 ADP5134 |
| 部品説明 1200 mA Buck Regulators and Two 300 mA LDO Regulators |
| メーカ Analog Devices |
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Data Sheet
Dual 3 MHz, 1200 mA Buck Regulators and Two 300 mA LDO
Regulators With Precision Enable and Power-Good Output
ADP5134
FEATURES
Main input voltage range of 2.5 V to 5.5 V
Two 1200 mA buck regulators and two 300 mA LDO regulators
24-lead, 4 mm × 4 mm LFCSP package
Regulator accuracy of ±1.8%
Factory programmable or external adjustable VOUTx
Precision enable pins for easier power sequencing
Factory selectable power-good pin
3 MHz buck operation with forced PWM and automatic
PWM/PSM modes
BUCK1/BUCK2: output voltage range from 0.8 V to 3.8 V
LDO1/LDO2: output voltage range from 0.8 V to 5.2 V
LDO1/LDO2: input voltage range from 1.7 V to 5.5 V
LDO1/LDO2: high PSRR and low output noise
APPLICATIONS
Power for processors, application specific integrated circuits
(ASICs), field programmable gate arrays (FPGAs), and
radio frequency (RF) chipsets
Portable instrumentation and medical devices
Space constrained devices
GENERAL DESCRIPTION
The ADP5134 combines two high performance buck regulators
and two low dropout (LDO) regulators. It is available in a 24-lead
4 mm × 4 mm LFCSP.
The high switching frequency of the buck regulators enables tiny
multilayer external components and minimizes the board space.
When the MODE pin is set to high, the buck regulators operate in
forced pulse-width modulation (PWM) mode. When the MODE
pin is set to low, the buck regulators operate in PWM mode
when the load is above a predefined threshold. When the load
current falls below a predefined threshold, the regulator operates
in power save mode (PSM), improving the light load efficiency.
The two buck regulators operate out of phase to reduce the input
capacitor requirement. The low quiescent current, low dropout
voltage, and wide input voltage range of the ADP5134 LDO
regulators extend the battery life of portable devices. The
ADP5134 LDO regulators maintain power supply rejection
greater than 60 dB for frequencies as high as 10 kHz while
operating with a low headroom voltage of 500 mV.
VIN
2.5V TO
5.5V
VINLDO1
1.7V TO
5.5V
VINLDO2
1.7V TO
5.5V
TYPICAL APPLICATION CIRCUIT
C1
4.7µF
VIN1
16
ON EN1
OFF
12
BUCK1
1.2A
C3
4.7µF
ON
OFF
VIN2
3
EN2
7
C5
0.1µF
C6
1µF
ON
OFF
AVIN
17
VIN3
21
EN3
22
C8
1µF
ON
OFF
VIN4
23
EN4
2
MODE
BUCK2
1.2A
HOUSEKEEPING
LDO1
300mA
LDO2
300mA
VOUT1
10
SW1
15
FB1
11
PGND1
14
MODE
13
VOUT2
9
SW2
4
FB2
8
PGND2
5
L1 1µH
R1
R2
C2
10µF
PWM
PSM/PWM
L2 1µH
R3
R4
C4
10µF
VOUT3
20
FB3
19
R5
R6
VOUT4
24
1 FB4
R7
R8
C7
1µF
C9
1µF
POWER GOOD
PG
6
ADP5134
18
AGND
Figure 1.
VDDIO
R1
100kΩ
Regulators in the ADP5134 are activated through dedicated
enable pins. The default output voltages can be externally set in
the adjustable version or factory programmable to a wide range
of preset values in the fixed voltage version.
Table 1. Family Models
Model
ADP5023
ADP5024
ADP5034
Channels
2 Bucks, 1 LDO
2 Bucks, 1 LDO
2 Bucks, 2 LDOs
ADP5037
ADP5033
ADP5040
ADP5041
2 Bucks, 2 LDOs
2 Bucks, 2 LDOs
with 2 ENx pins
1 Bucks, 2 LDOs
1 Bucks, 2 LDOs
with supervisory
circuit, watchdog
function, and
manual reset
Maximum
Current
800 mA, 300 mA
1.2 A, 300 mA
1.2 A, 300 mA
800 mA, 300 mA
800 mA, 300 mA
1.2 A, 300 mA
1.2 A, 300 mA
Package
LFCSP (CP-24-10)
LFCSP (CP-24-10)
LFCSP (CP-24-10),
TSSOP (RE-28-1)
LFCSP (CP-24-10)
WLCSP (CB-16-8)
LFCSP (CP-20-10)
LFCSP (CP-20-10)
Rev. 0
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2013 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 Page
ADP5134
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Typical Application Circuit ............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
General Specifications ................................................................. 3
BUCK1 and BUCK2 Specifications ........................................... 4
LDO1 and LDO2 Specifications................................................. 4
Input and Output Capacitor, Recommended Specifications.. 5
Absolute Maximum Ratings............................................................ 6
Thermal Resistance ...................................................................... 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Descriptions............................. 7
Typical Performance Characteristics ............................................. 8
REVISION HISTORY
10/13—Revision 0: Initial Version
Data Sheet
Theory of Operation ...................................................................... 15
Power Management Unit........................................................... 15
BUCK1 and BUCK2 .................................................................. 17
LDO1 and LDO2........................................................................ 18
Applications Information .............................................................. 19
Buck Regulator External Component Selection .................... 19
LDO Regulator External Component Selection .................... 20
Power Dissipation and Thermal Considerations ....................... 22
Buck Regulator Power Dissipation .......................................... 22
Junction Temperature ................................................................ 23
PCB Layout Guidelines.................................................................. 24
Typical Application Schematics.................................................... 25
Bill of Materials........................................................................... 26
Outline Dimensions ....................................................................... 27
Ordering Guide .......................................................................... 27
Rev. 0 | Page 2 of 28
3Pages
Data Sheet
ADP5134
Parameter
OUTPUT CHARACTERISTICS
Output Voltage Accuracy
Line Regulation
Load Regulation2
VOLTAGE FEEDBACK
DROPOUT VOLTAGE3
CURRENT-LIMIT THRESHOLD4
ACTIVE PULL-DOWN
OUTPUT NOISE
Regulator LDO1
Regulator LDO2
POWER SUPPLY REJECTION
RATIO
Regulator LDO1
Regulator LDO2
Symbol
ΔVVOUT3/VVOUT3,
ΔVVOUT4/VVOUT4
(ΔVVOUT3/VVOUT3)/ΔVVIN3,
(ΔVVOUT4/VVOUT4)/ΔVVIN4
(ΔVVOUT3/VVOUT3)/ΔIVOUT3,
(ΔVVOUT4/VVOUT4)/ΔIVOUT4
VFB3, VFB4
VDROPOUT
ILIMIT3, ILIMIT4
RPDWN-L
NOISELDO1
NOISELDO2
PSRR
Test Conditions/Comments
IVOUT3 = IVOUT4 = 1 mA
IVOUT3 = IVOUT4 = 1 mA
IVOUT3 = IVOUT4 = 1 mA to 300 mA
VVOUT3 = VVOUT4 = 5.2 V, IVOUT3 = IVOUT4 = 300 mA
VVOUT3 = VVOUT4 = 3.3 V, IVOUT3 = IVOUT4 = 300 mA
VVOUT3 = VVOUT4 = 2.5 V, IVOUT3 = IVOUT4 = 300 mA
VVOUT3 = VVOUT4 = 1.8 V, IVOUT3 = IVOUT4 = 300 mA
Channels disabled
10 Hz to 100 kHz, VVIN3 = 5 V, VVOUT3 = 2.8 V
10 Hz to 100 kHz, VVIN4 = 5 V, VVOUT4 = 1.2 V
10 kHz, VVIN3 = 3.3 V, VVOUT3 = 2.8 V, IVOUT3 = 1 mA
100 kHz, VVIN3 = 3.3 V, VVOUT3 = 2.8 V, IVOUT3 = 1 mA
1 MHz, VVIN3 = 3.3 V, VVOUT3 = 2.8 V, IVOUT3 = 1 mA
10 kHz, VVIN4 = 1.8 V, VVOUT4 = 1.2 V, IVOUT4 = 1 mA
100 kHz, VVIN4 = 1.8 V, VVOUT4 = 1.2 V, IVOUT4 = 1 mA
1 MHz, VVIN4 = 1.8 V, VVOUT4 = 1.2 V, IVOUT4 = 1 mA
Min Typ Max Unit
−1.8 +1.8 %
−0.0 +0.0 %/V
33
0.001 0.003 %/mA
0.491
335
0.5
50
75
100
180
600
600
0.509
140
V
mV
mV
mV
mV
mA
Ω
100 µV rms
60 µV rms
60 dB
62 dB
63 dB
54 dB
57 dB
64 dB
1 This is the input current into VIN3 or VIN4 that is not delivered to the output load. If LDO1 is only activated, it is the current into VIN3. If LDO2 is only activated, it is the
current into VIN4.
2 Based on an endpoint calculation using 1 mA and 300 mA loads.
3 Dropout voltage is defined as the input-to-output voltage differential when the input voltage is set to the nominal output voltage. This applies only to output voltages
greater than 1.7 V.
4 Current-limit threshold is defined as the current at which the output voltage drops to 90% of the specified typical value. For example, the current limit for a 3.0 V
output voltage is defined as the current that causes the output voltage to drop to 90% of 3.0 V, or 2.7 V.
INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS
TA = −40°C to +125°C, unless otherwise specified.
Table 5.
Parameter
NOMINAL INPUT AND OUTPUT CAPACITOR RATINGS
BUCK1, BUCK2 Input Capacitor Ratings
BUCK1, BUCK2 Output Capacitor Ratings
LDO1, LDO21 Input and Output Capacitor Ratings
CAPACITOR ESR
Symbol
CMIN1, CMIN2
CMIN1, CMIN2
CMIN3, CMIN4
RESR
Min
4.7
10
1.0
0.001
Typ Max Unit
40 µF
40 µF
µF
1Ω
1 The minimum input and output capacitance must be greater than 1.0 µF over the full range of operating conditions. The full range of operating conditions in the
application must be considered during device selection to ensure that the minimum capacitance specification is met. X7R type and X5R type capacitors are
recommended, and Y5V and Z5U capacitors are not recommended for use because of their poor temperature and dc bias characteristics.
Rev. 0 | Page 5 of 28
6 Page
合計 : 29 ページ |
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