Datasheet LTM4618 (Analog Devices) - 8

LTM4618
pin FuncTions PGOOD (D2):
Output Voltage Power Good Indicator. Open- pins. Recommend placing output decoupling capacitance drain logic output that is pulled to ground when the output directly between these pins and PGND pins. voltage is not within ±7.5% of the regulation point.
SW (K6):
Switching Node of the Circuit. This pin is used
INTVCC (D3):
Internal 5V Regulator Output. This pin is for to check the switching frequency. Leave pin floating. A additional decoupling of the 5V internal regulator. resistor-capacitor snubber can be placed from SW to
V
PGND to eliminate high frequency switch node ringing.
OUT (BANK 3: J1-J4, K1-K4, L1-L4, M1-M4):
Power Out- put Pins. Apply output load between these pins and PGND See the Applications Information section.
siMpliFieD block DiagraM
≤6V VIN TIE VIN, INTVCC AND EXTVCC TOGETHER INTERNAL VIN FILTER + 4.5V TO 26.5V 1.5µF EXTV C CC IN INTVCC MODE/PLLIN M1 PGND SW TK/SS 1.5µH V C OUT SS + 2.5V/6A POWER 10µF RUN M2 C CONTROL OUT PGOOD COMP PGND INTERNAL COMP 60.4k INTVCC FREQ VFB INTERNAL RFB FILTER 28k SGND 4618 F02
Figure 2. Simplified LTM4618 Block Diagram Decoupling requireMenTs TA = 25°C. Use Figure 2 configuration. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
CIN External Input Capacitor Requirement IOUT = 6A 10 µF (VIN = 4.5V to 26.5V, VOUT = 2.5V) COUT External Output Capacitor Requirement IOUT = 6A 200 µF (VIN = 4.5V to 26.5V, VOUT = 2.5V) 4618fb 8 For more information www.linear.com/LTM4618 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Simplified Block Diagram Decoupling Requirements Operation Applications Information Typical Applications Package Photograph Package Description Revision History Typical Application Related Parts