Datasheet LTM4616 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | Dual 8A per Channel Low VIN DC/DC µModule Regulator |
| Pages / Page | 30 / 10 — siMpliFieD block DiagraM. Table 1. Decoupling Requirements. TA = 25°C, … |
| File Format / Size | PDF / 792 Kb |
| Document Language | English |
siMpliFieD block DiagraM. Table 1. Decoupling Requirements. TA = 25°C, Block Diagram Configuration. SYMBOL. PARAMETER
Model Line for this Datasheet
Text Version of Document
LTM4616
siMpliFieD block DiagraM Table 1. Decoupling Requirements. TA = 25°C, Block Diagram Configuration. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
CIN1 External Input Capacitor Requirement CIN2 (VIN1 = 2.7V to 5.5V, VOUT1 = 1.5V) IOUT1 = 8A 22 µF (VIN2 = 2.7V to 5.5V, VOUT2 = 2.5V) IOUT2 = 8A 22 µF COUT1 External Output Capacitor Requirement COUT2 (VIN1 = 2.7V to 5.5V, VOUT1 = 1.5V) IOUT1 = 8A 100 µF (VIN2 = 2.7V to 5.5V, VOUT2 = 2.5V) IOUT2 = 8A 100 µF
operation
The LTM4616 is a dual-output standalone nonisolated Pulling the RUN pins below 1.3V forces the regulators switching mode DC/DC power supply. It can provide two into a shutdown state, by turning off both MOSFETs. The 8A outputs with few external input and output capacitors. TRACK pin is used for programming the output voltage This module provides precisely regulated output voltages ramp and voltage tracking during start-up. See the Ap- programmable via external resistors from 0.6VDC to 5VDC plications Information section. over 2.7V to 5.5V input voltages. The typical application The LTM4616 is internally compensated to be stable over schematic is shown in Figure 18. all operating conditions. Table 3 provides a guideline The LTM4616 has integrated constant frequency current for input and output capacitances for several operating mode regulators and built-in power MOSFET devices with conditions. LTpowerCAD™ design tool is available for fine fast switching speed. The typical switching frequency is tuning transient and stability performance. The FB pin is 1.5MHz. For switching noise sensitive applications, it can used to program the output voltage with a single external be externally synchronized from 0.75MHz to 2.25MHz. resistor to ground. Even spread spectrum switching can be implemented in Multiphase operation can be easily employed with the the design to reduce noise. synchronization and phase mode controls. The LTM4616 With current mode control and internal feedback loop has clock in and clock out for poly phasing multiple devices compensation, the LTM4616 module has sufficient stabil- or frequency synchronization. ity margins and good transient performance with a wide High efficiency at light loads can be accomplished with range of output capacitors, even with all ceramic output selectable Burst Mode operation using the MODE pin. These capacitors. light load features will accommodate battery operation. Current mode control provides cycle-by-cycle fast current Efficiency graphs are provided for light load operation in limit and thermal shutdown in an overcurrent condition. the Typical Performance Characteristics section. Internal overvoltage and undervoltage comparators pull Output voltage margining is supported, and can be pro- the open-drain PGOOD output low if the output feedback gramed from ±5% to ±15% using the MGN and BSEL pins. voltage exits a ±10% window around the regulation point. The power good pins are disabled during margining. 4616ff 10 For more information www.linear.com/LTM4616 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Simplified Block Diagram Operation Applications Information Package Description Revision History Package Photo Related Parts Design Resources
siMpliFieD block DiagraM Table 1. Decoupling Requirements. TA = 25°C, Block Diagram Configuration. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
CIN1 External Input Capacitor Requirement CIN2 (VIN1 = 2.7V to 5.5V, VOUT1 = 1.5V) IOUT1 = 8A 22 µF (VIN2 = 2.7V to 5.5V, VOUT2 = 2.5V) IOUT2 = 8A 22 µF COUT1 External Output Capacitor Requirement COUT2 (VIN1 = 2.7V to 5.5V, VOUT1 = 1.5V) IOUT1 = 8A 100 µF (VIN2 = 2.7V to 5.5V, VOUT2 = 2.5V) IOUT2 = 8A 100 µF
operation
The LTM4616 is a dual-output standalone nonisolated Pulling the RUN pins below 1.3V forces the regulators switching mode DC/DC power supply. It can provide two into a shutdown state, by turning off both MOSFETs. The 8A outputs with few external input and output capacitors. TRACK pin is used for programming the output voltage This module provides precisely regulated output voltages ramp and voltage tracking during start-up. See the Ap- programmable via external resistors from 0.6VDC to 5VDC plications Information section. over 2.7V to 5.5V input voltages. The typical application The LTM4616 is internally compensated to be stable over schematic is shown in Figure 18. all operating conditions. Table 3 provides a guideline The LTM4616 has integrated constant frequency current for input and output capacitances for several operating mode regulators and built-in power MOSFET devices with conditions. LTpowerCAD™ design tool is available for fine fast switching speed. The typical switching frequency is tuning transient and stability performance. The FB pin is 1.5MHz. For switching noise sensitive applications, it can used to program the output voltage with a single external be externally synchronized from 0.75MHz to 2.25MHz. resistor to ground. Even spread spectrum switching can be implemented in Multiphase operation can be easily employed with the the design to reduce noise. synchronization and phase mode controls. The LTM4616 With current mode control and internal feedback loop has clock in and clock out for poly phasing multiple devices compensation, the LTM4616 module has sufficient stabil- or frequency synchronization. ity margins and good transient performance with a wide High efficiency at light loads can be accomplished with range of output capacitors, even with all ceramic output selectable Burst Mode operation using the MODE pin. These capacitors. light load features will accommodate battery operation. Current mode control provides cycle-by-cycle fast current Efficiency graphs are provided for light load operation in limit and thermal shutdown in an overcurrent condition. the Typical Performance Characteristics section. Internal overvoltage and undervoltage comparators pull Output voltage margining is supported, and can be pro- the open-drain PGOOD output low if the output feedback gramed from ±5% to ±15% using the MGN and BSEL pins. voltage exits a ±10% window around the regulation point. The power good pins are disabled during margining. 4616ff 10 For more information www.linear.com/LTM4616 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Pin Functions Simplified Block Diagram Operation Applications Information Package Description Revision History Package Photo Related Parts Design Resources
