Datasheet ADP5138 (Analog Devices) - 5

Data Sheet ADP5138 BUCK REGULATOR SPECIFICATIONS
VAVIN = VPVIN1 = VPVIN2 = VPVIN3 = VPVIN4 = 5.0 V, TJ = −40°C to +125°C for minimum and maximum specifications, and TA = 25°C for typical specifications, unless otherwise noted.
Table 2. Parameter Symbol Test Conditions/Comments Min Typ Max Unit
FEEDBACK FB1 to FB4 Regulation Voltage VFB1 to VFB4 Adjustable version 0.788 0.8 0.812 V Fixed Output Accuracy1 VOUT1 to VOUT4 −2 +2 % OUTPUT CHARACTERISTICS Pulse-width modulation (PWM) mode Load Regulation2 ∆VOUT/∆IOUT Output current (IOUT) from 0 A to 1 A, VAVIN = VPVINx = 5 V 0.3 %/A Line Regulation2 ∆VOUT/∆VPVIN VAVIN = VPVINx = 4 V to 5.5 V, IOUT = 1 A 0.1 %/V SWITCH NODE High-Side On Resistance3 RDSON_H VAVIN = VPVINx = 5 V, ISWx = 0.5 A 130 200 mΩ Low-Side On Resistance3 RDSON_L VAVIN = VPVINx = 5 V, ISWx = 0.5 A 120 200 mΩ SWx Leakage Current ISW_LK VAVIN = VPVINx = 5 V, SWx = GND or SWx = VPVINx 0.1 µA CURRENT LIMIT High-Side Peak Current Limit 1.28 1.6 1.92 A Low-Side Sink Current Limit 1 A PWM SWITCHING FREQUENCY fSW 3 3.2 3.4 MHz PHASE SHIFT Phase shift between channels 90 Degrees SYNC SYNC pin Synchronization Range 2.8 3.5 MHz SYNC Minimum On Time 100 ns SYNC Minimum Off Time 100 ns SYNC Input Voltage High 1.2 V Low 0.4 V OUTPUT DISCHARGE RESISTANCE RDISCHARGE1 to 64 100 Ω RDISCHARGE4 SOFT START TIME tSS1 to tSS4 425 500 575 µs 1 VOUT1 to VOUT4 are the output voltages on Channel 1 to Channel 4. 2 Bench characterization result. 3 Pin to pin measurement. Rev. A | Page 5 of 23 Document Outline Features Applications Typical Application Circuit General Description Revision History Functional Block Diagram Specifications Buck Regulator Specifications LDO Regulator Specifications Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Control Scheme Precision Enable and Shutdown Oscillator and Phase Shift Synchronization Input Overvoltage Lockout (OVLO) Input Undervoltage Monitor (UVM) Input Undervoltage Lockout (UVLO) Output Voltage Power-Good Power-On Reset (POR) Soft Start and Power-Up Sequence Current-Limit and Short-Circuit Protection Active Output Discharge Thermal Shutdown Applications Information Input Capacitor Selection Output Voltage Setting Inductor Selection Output Capacitor Selection Application Circuit Factory-Programmable Options Outline Dimensions Ordering Guide Automotive Products