ADP5133: Dual 3 MHz, 800 mA Buck Regulators in WLCSP0 pages

Dual 3 MHz, 800 mA Buck Regulators in WLCSP

ADP5133

Data Sheet
FEATURES

The two bucks operate out of phase to reduce the input capacitor
requirement and noise.

Input voltage range: 2.3 V to 5.5 V
Two 800 mA buck regulators
Tiny, 16-ball, 2 mm × 2 mm WLCSP package
Regulator accuracy: ±1.8%
Factory programmable or external adjustable VOUTx
3 MHz buck operation with forced PWM and auto PWM/PSM
modes
BUCK1/BUCK2: output voltage range from 0.8 V to 3.8 V

The regulators in the ADP5133 are activated through dedicated
enable pins. The output voltages can be externally set through a
resistor feedback network.
Table 1. Related Devices
Maximum
Current
800 mA, 300 mA
1.2 A, 300 mA
1.2 A, 300 mA

Model
ADP5023
ADP5024
ADP5034
ADP5037
ADP5033

APPLICATIONS
Power for processors, ASICs, FPGAs, and RF chipsets
Portable instrumentation and medical devices
Space constrained devices

GENERAL DESCRIPTION

Channels
2 Bucks, 1 LDO
2 Bucks, 1 LDO
2 Bucks, 2 LDOs
2 Bucks, 2 LDOs
2 Bucks, 2 LDOs with
2 ENx pins
1 Buck, 2 LDOs
1 Buck, 2 LDOs with
supervisory, watchdog,
manual reset
2 Bucks with 2 ENx pins
2 Bucks, 2 LDOs with
precision enable and
power-good output

ADP5040
ADP5041

The ADP5133 combines two high performance buck regulators
in a tiny, 16-ball, 2 mm × 2 mm WLCSP to meet demanding
performance and board space requirements.

ADP5133
ADP5134

The high switching frequency of the buck regulators enables tiny
multilayer external components and minimizes the board space.
When the MODE pin is set high, the buck regulators operate in
forced PWM mode. When the MODE pin is set low and the
buck regulators operate in PWM mode, the load current is above
a predefined threshold. When the load current falls below a
predefined threshold, the regulators operate in power save
mode (PSM), improving the light load efficiency.

800 mA, 300 mA
800 mA, 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)

1.2 A, 300 mA
1.2 A, 300 mA

LFCSP (CP-20-10)
LFCSP (CP-20-10)

800 mA
1.2 A, 300 mA

WLCSP (CB-16-8)
LFCSP (CP-24-7)

TYPICAL APPLICATION CIRCUIT
ADP5133
VOUT1
2.3V TO 5.5V

VIN1
SW1

C1
4.7µF
ON

BUCK1
EN1

FB1
PGND1

OFF

MODE

L1 1µH
R1

VOUT1 @
800mA
C3
10µF

R2

FPWM
AUTO

VOUT2

VIN2

SW2

ON
OFF

BUCK2
EN2

FB2
PGND2

AGND

L2 1µH
R3
R4

VOUT2 @
800mA
C4
10µF

11991-001

C2
4.7µF

Figure 1.

Rev. 0

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