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PDF ADP5134 Data sheet ( Hoja de datos )
| Número de pieza | ADP5134 | |
| Descripción | 1200 mA Buck Regulators and Two 300 mA LDO Regulators | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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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
Data Sheet
BUCK1 AND BUCK2 SPECIFICATIONS
VAVIN = VVIN1 = VVIN2 = 2.5 V to 5.5 V, TJ = −40°C to +125°C for minimum/maximum specifications, and TA = 25°C for typical specifications,
unless otherwise noted. All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).
Table 3.
Parameter
OUTPUT CHARACTERISTICS
Output Voltage Accuracy
Line Regulation
Load Regulation
VOLTAGE FEEDBACK
OPERATING SUPPLY CURRENT
BUCK1 Only
BUCK2 Only
BUCK1 and BUCK2
PSM CURRENT THRESHOLD
SWx CHARACTERISTICS
SWx On Resistance
Current Limit
ACTIVE PULL-DOWN
OSCILLATOR FREQUENCY
Symbol
ΔVVOUT1/VVOUT1,
ΔVVOUT2/VVOUT2
(ΔVVOUT1/VVOUT1)/ΔVVIN1,
(ΔVVOUT2/VVOUT2)/ΔVVIN2
(ΔVVOUT1/VVOUT1)/ΔIVOUT1,
(ΔVVOUT2/VVOUT2)/ΔIVOUT2
VFB1, VFB2
IIN
IPSM
RNFET
RPFET
RNFET
RPFET
ILIMIT1, ILIMIT2
RPDWN-B
fSW
Test Conditions/Comments
PWM mode, ILOAD1 = ILOAD2 = 0 mA
PWM mode
ILOAD = 0 mA to 1200 mA, PWM mode
Models with adjustable outputs
MODE = ground
ILOAD1 = 0 mA, device not switching, all
other channels disabled
ILOAD2 = 0 mA, device not switching, all
other channels disabled
ILOAD1 = ILOAD2 = 0 mA, device not
switching, LDO channels disabled
PSM to PWM operation
VVIN1 = VVIN2 = 3.6 V
VVIN1 = VVIN2 = 3.6 V
VVIN1 = VVIN2 = 5.5 V
VVIN1 = VVIN2 = 5.5 V
PFET switch peak current limit
VVIN1 = VVIN2 = 3.6 V, channels disabled
Min
−1.8
0.491
1600
2.5
Typ
−0.05
−0.1
0.5
44
55
67
100
155
205
137
162
1950
75
3.0
Max
+1.8
0.509
240
310
204
243
2300
3.5
Unit
%
%/V
%/A
V
μA
μA
μA
mA
mΩ
mΩ
mΩ
mΩ
mA
Ω
MHz
LDO1 AND LDO2 SPECIFICATIONS
VVIN3 = (VVOUT3 + 0.5 V) or 1.7 V (whichever is greater) to 5.5 V, VVIN4 = (VVOUT4 + 0.5 V) or 1.7 V (whichever is greater) to 5.5 V, CIN =
COUT = 1 µF, TJ = −40°C to +125°C for minimum/maximum specifications, and TA = 25°C for typical specifications, unless otherwise
noted. All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).
Table 4.
Parameter
INPUT VOLTAGE RANGE
OPERATING SUPPLY CURRENT
Bias Current per LDO1
Symbol
VVIN3, VVIN4
IVIN3BIAS/IVIN4BIAS
Total System Input Current IIN
LDO1 or LDO2 Only
LDO1 and LDO2
Test Conditions/Comments
Min Typ Max Unit
1.7 5.5 V
IVOUT3 = IVOUT4 = 0 µA
IVOUT3 = IVOUT4 = 10 mA
IVOUT3 = IVOUT4 = 300 mA
Includes all current into AVIN, VIN1, VIN2,
VIN3, and VIN4
IVOUT3 = IVOUT4 = 0 µA, all other channels
disabled
IVOUT3 = IVOUT4 = 0 µA, buck channels disabled
10 30 µA
60 100 µA
165 245 µA
63 µA
84 µA
Rev. 0 | Page 4 of 28
5 Page 
ADP5134
100
+25°C
90
80
–40°C
70
+85°C
60
50
40
30
20
10
0
0.001
0.01
0.1
1
IVOUT1 (A)
Figure 15. BUCK1 Efficiency vs. Load Current, Across Temperature,
VVIN1 = 3.9 V, VVOUT1 = 3.3 V, Auto Mode
100
90 +25°C
+85°C
80
70
–40°C
60
50
40
30
20
10
0
0.001
0.01
0.1
1
IVOUT2 (A)
Figure 16. BUCK2 Efficiency vs. Load Current, Across Temperature,
VVOUT2 = 1.8 V, Auto Mode
100
+25°C
90
80
70 +85°C
–40°C
60
50
40
30
20
10
0
0.001
0.01
0.1
1
IVOUT1 (A)
Figure 17. BUCK1 Efficiency vs. Load Current, Across Temperature,
VVOUT1 = 0.8 V, Auto Mode
Data Sheet
3.3
3.2
+25°C
3.1
–40°C
3.0
+85°C
2.9
2.8
2.7
2.6
2.5
0
0.2 0.4 0.6 0.8 1.0 1.2
IVOUT2 (A)
Figure 18. BUCK2 Switching Frequency vs. Output Current, Across
Temperature, VVOUT2 = 1.8 V, PWM Mode
T
VVOUT1
1
ISW1
2
VSW1
4
CH1 50.0mV
CH2 500mA Ω
CH4 2.00V
M 4.00µs A CH2
T 28.40%
240mA
Figure 19. Typical Waveforms, VVOUT1 = 3.3 V, IVOUT1 = 30 mA, Auto Mode
T
VVOUT2
1
ISW2
2
VSW2
4
CH1 50.0mV BW CH2 500mA Ω M 4.00µs A CH2
CH4 2.00V BW
T 28.40%
220mA
Figure 20. Typical Waveforms, VVOUT2 = 1.8 V, IVOUT2 = 30 mA, Auto Mode
Rev. 0 | Page 10 of 28
11 Page | ||
| Páginas | Total 29 Páginas | |
| PDF Descargar | [ Datasheet ADP5134.PDF ] | |
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