Dual 3 MHz, 1200 mA Buck Regulators and Two 300 mA LDO Regulators With Precision Enable and Power-Good Output Data Sheet ADP5134 FEATURES TYPICAL APPLICATION CIRCUIT Main input voltage range of 2.5 V to 5.5 V VOUT1 10 L1 1H V VIN1 IN SW1 Two 1200 mA buck regulators and two 300 mA LDO regulators 16 2.5V TO 15 C1 R1 5.5V FB1 4.7F BUCK1 11 24-lead, 4 mm 4 mm LFCSP package 1.2A C2 R2 10F ON PGND1 EN1 14 Regulator accuracy of 1.8% 12 OFF PWM MODE Factory programmable or external adjustable VOUTx 13 PSM/PWM VOUT2 9 VIN2 MODE Precision enable pins for easier power sequencing 3 L2 1H C3 SW2 4 BUCK2 4.7F Factory selectable power-good pin R3 1.2A FB2 8 C4 ON EN2 R4 3 MHz buck operation with forced PWM and automatic 10F OFF 7 PGND2 5 PWM/PSM modes AVIN 17 HOUSEKEEPING C5 BUCK1/BUCK2: output voltage range from 0.8 V to 3.8 V 0.1F V INLDO1 VIN3 1.7V TO 21 VOUT3 C6 LDO1/LDO2: output voltage range from 0.8 V to 5.2 V 5.5V 20 LDO1 1F FB3 R5 300mA 19 C7 LDO1/LDO2: input voltage range from 1.7 V to 5.5 V ON EN3 1F 22 R6 OFF LDO1/LDO2: high PSRR and low output noise V INLDO2 VIN4 1.7V TO 23 VOUT4 C8 5.5V LDO2 24 1F APPLICATIONS 300mA R7 FB4 1 C9 ON EN4 1F 2 R8 OFF Power for processors, application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), and VDDIO POWER GOOD R1 radio frequency (RF) chipsets 100k PG 6 Portable instrumentation and medical devices ADP5134 18 Space constrained devices AGND Figure 1. GENERAL DESCRIPTION The ADP5134 combines two high performance buck regulators Regulators in the ADP5134 are activated through dedicated and two low dropout (LDO) regulators. It is available in a 24-lead enable pins. The default output voltages can be externally set in 4 mm 4 mm LFCSP. the adjustable version or factory programmable to a wide range of preset values in the fixed voltage version. The high switching frequency of the buck regulators enables tiny multilayer external components and minimizes the board space. Table 1. Family Models When the MODE pin is set to high, the buck regulators operate in Maximum forced pulse-width modulation (PWM) mode. When the MODE Model Channels Current Package pin is set to low, the buck regulators operate in PWM mode ADP5023 2 Bucks, 1 LDO 800 mA, 300 mA LFCSP (CP-24-10) when the load is above a predefined threshold. When the load ADP5024 2 Bucks, 1 LDO 1.2 A, 300 mA LFCSP (CP-24-10) current falls below a predefined threshold, the regulator operates ADP5034 2 Bucks, 2 LDOs 1.2 A, 300 mA LFCSP (CP-24-10), TSSOP (RE-28-1) in power save mode (PSM), improving the light load efficiency. ADP5037 2 Bucks, 2 LDOs 800 mA, 300 mA LFCSP (CP-24-10) The two buck regulators operate out of phase to reduce the input ADP5033 2 Bucks, 2 LDOs 800 mA, 300 mA WLCSP (CB-16-8) capacitor requirement. The low quiescent current, low dropout with 2 ENx pins voltage, and wide input voltage range of the ADP5134 LDO ADP5040 1 Bucks, 2 LDOs 1.2 A, 300 mA LFCSP (CP-20-10) regulators extend the battery life of portable devices. The ADP5041 1 Bucks, 2 LDOs 1.2 A, 300 mA LFCSP (CP-20-10) with supervisory ADP5134 LDO regulators maintain power supply rejection circuit, watchdog greater than 60 dB for frequencies as high as 10 kHz while function, and operating with a low headroom voltage of 500 mV. manual reset Rev. 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Technical Support www.analog.com 11710-001ADP5134 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Theory of Operation ...................................................................... 15 Applications ....................................................................................... 1 Power Management Unit ........................................................... 15 Typical Application Circuit ............................................................. 1 BUCK1 and BUCK2 .................................................................. 17 General Description ......................................................................... 1 LDO1 and LDO2 ........................................................................ 18 Revision History ............................................................................... 2 Applications Information .............................................................. 19 Specifications ..................................................................................... 3 Buck Regulator External Component Selection .................... 19 General Specifications ................................................................. 3 LDO Regulator External Component Selection .................... 20 BUCK1 and BUCK2 Specifications ........................................... 4 Power Dissipation and Thermal Considerations ....................... 22 LDO1 and LDO2 Specifications ................................................. 4 Buck Regulator Power Dissipation .......................................... 22 Input and Output Capacitor, Recommended Specifications .. 5 Junction Temperature ................................................................ 23 Absolute Maximum Ratings ............................................................ 6 PCB Layout Guidelines .................................................................. 24 Thermal Resistance ...................................................................... 6 Typical Application Schematics .................................................... 25 ESD Caution .................................................................................. 6 Bill of Materials ........................................................................... 26 Pin Configuration and Function Descriptions ............................. 7 Outline Dimensions ....................................................................... 27 Typical Performance Characteristics ............................................. 8 Ordering Guide .......................................................................... 27 REVISION HISTORY 8/2017Rev. 0 to Rev. A Changes CP-24-7 to CP-24-15 .................................... Throughout Updated Outline Dimensions ....................................................... 27 Changes to Ordering Guide .......................................................... 27 10/2013Revision 0: Initial Version Rev. A Page 2 of 28