Datasheet ADP5133 (Analog Devices)

Dual 3 MHz, 800 mA Buck Regulators in WLCSP Data Sheet ADP5133 FEATURES
The two bucks operate out of phase to reduce the input capacitor
Input voltage range: 2.3 V to 5.5 V
requirement and noise.
Two 800 mA buck regulators
The regulators in the ADP5133 are activated through dedicated
Tiny, 16-ball, 2 mm × 2 mm WLCSP package
enable pins. The output voltages can be external y set through a
Regulator accuracy: ±1.8%
resistor feedback network.
Factory programmable or external adjustable VOUTx 3 MHz buck operation with forced PWM and auto PWM/PSM Table 1. Related Devices modes Maximum BUCK1/BUCK2: output voltage range from 0.6 V to 3.8 V Model Channels Current Package
ADP5023 2 Bucks, 1 LDO 800 mA, 300 mA LFCSP (CP-24-10)
APPLICATIONS
ADP5024 2 Bucks, 1 LDO 1.2 A, 300 mA LFCSP (CP-24-10)
Power for processors, ASICs, FPGAs, and RF chipsets
ADP5034 2 Bucks, 2 LDOs 1.2 A, 300 mA LFCSP (CP-24-10), TSSOP (RE-28-1)
Portable instrumentation and medical devices
ADP5037 2 Bucks, 2 LDOs 800 mA, 300 mA LFCSP (CP-24-10)
Space constrained devices
ADP5033 2 Bucks, 2 LDOs with 800 mA, 300 mA WLCSP (CB-16-8)
GENERAL DESCRIPTION
2 ENx pins ADP5040 1 Buck, 2 LDOs 1.2 A, 300 mA LFCSP (CP-20-10) The ADP5133 combines two high performance buck regulators ADP5041 1 Buck, 2 LDOs with 1.2 A, 300 mA LFCSP (CP-20-10) in a tiny, 16-ball, 2 mm × 2 mm WLCSP to meet demanding supervisory, watchdog, performance and board space requirements. manual reset ADP5133 2 Bucks with 2 ENx pins 800 mA WLCSP (CB-16-8) The high switching frequency of the buck regulators enables tiny ADP5134 2 Bucks, 2 LDOs with 1.2 A, 300 mA LFCSP (CP-24-7) multilayer external components and minimizes the board space. precision enable and When the MODE pin is set high, the buck regulators operate in power-good output 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.
TYPICAL APPLICATION CIRCUIT ADP5133 VOUT1 VIN1 2.3V TO 5.5V L1 1µH C1 SW1 VOUT1 @ 4.7µF 800mA BUCK1 FB1 R1 C3 ON EN1 PGND1 R2 10µF OFF MODE FPWM AUTO VOUT2 VIN2 C2 SW2 L2 1µH VOUT2 @ 4.7µF 800mA BUCK2 FB2 R3 C4 ON EN2 PGND2 R4 10µF OFF AGND
001 11991- Figure 1.
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION TYPICAL APPLICATION CIRCUIT TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS GENERAL SPECIFICATIONS BUCK1 AND BUCK2 SPECIFICATIONS INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION POWER MANAGEMENT UNIT Thermal Protection Undervoltage Lockout Enable/Shutdown BUCK1 AND BUCK2 Control Scheme PWM Mode Auto PSM/PWM Operation PSM Current Threshold Oscillator/Phasing of Inductor Switching Short-Circuit Protection Soft Start Current Limit 100% Duty Operation Active Pull-Downs APPLICATIONS INFORMATION BUCK EXTERNAL COMPONENT SELECTION Feedback Resistors Inductor Output Capacitor Input Capacitor POWER DISSIPATION AND THERMAL CONSIDERATIONS BUCK REGULATOR POWER DISSIPATION JUNCTION TEMPERATURE PCB LAYOUT GUIDELINES TYPICAL APPLICATION SCHEMATICS OUTLINE DIMENSIONS ORDERING GUIDE