ADP5135ACPZ-R7 View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
ADP5135ACPZ-R7
Analog Devices
ADP5135ACPZ-R7 Datasheet PDF : 24 Pages
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Data Sheet
Triple 1800 mA Buck Regulator with
Precision Enables and Power-Good Outputs
ADP5135
FEATURES
Input voltage range: 3.0 V to 5.5 V
Three 1800 mA buck regulators
24-lead, 4 mm × 4 mm LFCSP package
Regulator accuracy: ±1.8%
Factory programmable or external adjustable VOUTx pins
Precision enables for easier power sequencing
Power-good pins for monitoring each regulator
3 MHz buck operation with forced PWM and auto PWM/PSM
modes
BUCK1/BUCK2/BUCK3: output voltage range from 0.8 V to 3.8 V
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 ADP5135 combines three high performance buck regulators
(BUCK1, BUCK2, and BUCK3). 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 only when the load is above a predefined threshold. When
the load current falls below this predefined threshold, the
regulator operates in power save mode (PSM), improving the
light load efficiency.
BUCK1 and BUCK2 operate in synchronization, and BUCK3
operates out of phase to reduce the input capacitor requirement.
Regulators in the ADP5135 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.
TYPICAL APPLICATION CIRCUIT
3.0V
TO
5.5V
C7
0.1µF
C1
10µF
AVIN
17
AGND
18
VIN1
16
PGND1
14
ON
OFF
EN1 12
C3
10µF
VIN2
3
PGND2
5
ON
OFF
EN2 7
ADP5135
HOUSE-
KEEPING
BUCK1
1.8A
BUCK2
1.8A
VOUT1
10
SW1
L1 1µH
15
FB1 R1
11
R2
VDDIO
C2
22µF
MODE PWM
13
AUTO
VOUT2
9
SW2 L2 1µH
4
FB2 R3
8
R4
C4
22µF
C5
10µF
VIN3
21
PGND3
19
ON
OFF
EN3 24
BUCK3
1.8A
POWER
GOOD
VOUT3
22
SW3 L3 1µH
20
FB3 R5
23
R6
6 PG1
PG2
2
PG3
1
R7
100Ω
C6
22µF
VDDIO
R8
100Ω
R9
100Ω
Figure 1.
Table 1. Family Devices
Device Channels
ADP5023 2 buck regulators, 1 LDO
ADP5024 2 buck regulators, 1 LDO
ADP5034 2 buck regulators, 2 LDOs
ADP5037 2 buck regulators, 2 LDOs
ADP5033
ADP5040
2 buck regulators, 2 LDOs
with 2 ENx pins
1 buck regulator, 2 LDOs
ADP5041
ADP5133
ADP5134
1 buck regulator, 2 LDOs
with supervisory circuit,
watchdog function, and
manual reset
2 buck regulators with
2 ENx pins
2 buck regulators, 2 LDOs
with precision enable and
power good
Max
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
800 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)
WLCSP (CB-16-8)
LFCSP (CP-24-7)
Rev. 0
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