Datasheet ADP5135 (Analog Devices) - 3

Data Sheet ADP5135 SPECIFICATIONS
VAVIN = VIN1 = VIN2 = VIN3 = 3.0 V to 5.5 V; TJ = −40°C to +125°C for minimum/maximum specifications, and TA = 25°C for typical specifications, unless otherwise noted.
Table 2. Parameter Symbol Test Conditions/Comments Min Typ Max Unit
INPUT VOLTAGE RANGE VAVIN, VIN1, 3.0 5.5 V VIN2, VIN3 THERMAL SHUTDOWN Threshold TSSD TJ rising 150 °C Hysteresis TSSD_HYS 20 °C START-UP TIME1 BUCK1 tSTART1 450 μs BUCK2 tSTART2 550 μs BUCK3 tSTART3 550 μs START-UP TIME, BUCK3 FIRST BUCK3 tSTART4 550 μs BUCK1 tSTART5 200 μs BUCK2 tSTART6 300 μs SHUTDOWN CONTROL All ENx pins below VIL_EN level to achieve ISHUTDOWN V Level High VIH_EN 0.9 Level Low VIL_EN 0.35 V PRECISION ENABLE PINS Regulator activation/deactivation thresholds V Analog Activation Threshold VENR Device out of shutdown (VENx > VIH_EN) 0.94 0.97 1 Hysteresis (Regulator Deactivation) VENH 80 mV Input Leakage Current VI-LEAKAGE 0.05 1 μA POWER-GOOD PINS Monitors VOUT falling out of regulation Falling Threshold VPGLOW 85 % VOUT Rising Threshold VPGHYS 91 94 97 % VOUT Delay tPGDLY 20 μs Leakage Current IPGIQ VPG = VIN 1 μA Output Voltage Low VPGOL Load current = 1 mA 0.02 0.15 V MODE PIN Level High VIH_MOD 1.1 V Level Low VIL_MOD 0.4 V INPUT CURRENT No load, no buck switching All Channels Enabled ISTBY_NOSW 85 110 μA All Channels Disabled ISHUTDOWN TJ = −40°C to +85°C 0.3 1.5 μA AVIN UNDERVOLTAGE LOCKOUT Mid UVLO Input Voltage Rising UVLOAVINRISE 2.95 V Mid UVLO Input Voltage Falling UVLOAVINFALL 2.45 V 1 Start-up time is defined as the time from EN1 = EN2 = EN3 at 0 V to VAVIN to VOUT1, VOUT2, and VOUT3 reaching 90% of their nominal level. Start-up times are shorter for individual channels if another channel is already enabled. See the Typical Performance Characteristics section for more information. Rev. 0 | Page 3 of 24 Document Outline Features Applications Typical Application Circuit General Description Revision History Specifications BUCK1, BUCK2, and BUCK3 Input and Output Capacitors, Recommended Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Power Management Unit Power-Good Output Thermal Protection Undervoltage Lockout Precision Enable and Shutdown Control Buck Regulators: BUCK1, BUCK2, AND BUCK3 Control Scheme PWM Mode Power Save Mode (PSM) PSM Current Threshold Oscillator/Phasing of Inductor Switching Short-Circuit Protection Buck Regulator Soft Start Current Limit 100% Duty Operation Active Pull-Down Resistors Applications Information Buck External Component Selection Feedback Resistors Inductor Output Capacitor Input Capacitor Typical Application Schematics Power Dissipation and Thermal Considerations Buck Regulator Power Dissipation Junction Temperature PCB Layout Guidelines Outline Dimensions Ordering Guide