LTM4601IV-1#2DMPBF Linear Technology, LTM4601IV-1#2DMPBF Datasheet
LTM4601IV-1#2DMPBF
Specifications of LTM4601IV-1#2DMPBF
Available stocks
Related parts for LTM4601IV-1#2DMPBF
LTM4601IV-1#2DMPBF Summary of contents
Page 1
... The onboard remote sense amplifi not available in the LTM4601-1. L, LT, LTC, LTM, Linear Technology, the Linear logo, μModule and PolyPhase are registered trademarks of Linear Technology Corporation. UltraFast is a trademark of Linear Technology Corporatioin. All other trademarks are the property of their respective owners. Protected by U.S. ...
Page 2
... LTM4601EV-1#PBF LTM4601EV-1#PBF LTM4601IV-1#PBF LTM4601IV-1#PBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. For more information on lead free part marking, go to: This product is only offered in trays. For more information go to: ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi ...
Page 3
ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER I Input Supply Bias Current Q(VIN,NOLOAD) I Input Supply Current S(VIN) INTV V = 12V, RUN > Output Specifi cations I Output Continuous Current Range ...
Page 4
LTM4601/LTM4601-1 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER SR Slew Rate R Input Resistance IN CMRR Common Mode Rejection Mode Control Stage V Error Amplifi er Input Voltage FB Accuracy V RUN Pin On/Off Threshold ...
Page 5
TYPICAL PERFORMANCE CHARACTERISTICS Effi ciency vs Load Current with 5V IN 100 0.6V OUT 70 1.2V OUT 1.5V OUT 2.5V 65 OUT 3.3V OUT OUTPUT CURRENT (A) 4601 G01 1.2V Transient ...
Page 6
LTM4601/LTM4601-1 TYPICAL PERFORMANCE CHARACTERISTICS Start-Up OUT V OUT 0.5V/DIV I IN 0.5A/DIV 5ms/DIV V = 12V 1.5V OUT C = 470μF OUT 3 22μF SOFT-START = 10nF Step-Down Ratio IN OUT ...
Page 7
PIN FUNCTIONS (See Package Description for Pin Assignment) V (Bank 1): Power Input Pins. Apply input voltage be- IN tween these pins and PGND pins. Recommend placing input decoupling capacitance directly between V and PGND pins. V (Bank 3): Power ...
Page 8
LTM4601/LTM4601-1 PIN FUNCTIONS (See Package Description for Pin Assignment) SGND (Pin H12): Signal Ground. This pin connects to PGND at output capacitor point. COMP (Pin A11): Current Control Threshold and Error Amplifi er Compensation Point. The current comparator threshold increases ...
Page 9
SIMPLIFIED BLOCK DIAGRAM V OUT_LCL > <0.9V = OFF MAX = 5V RUN PGOOD COMP INTERNAL COMP SGND MARG1 MARG0 SET SET 40.2k MPGM TRACK/SS PLLIN C SS INTV CC DRV CC Figure 1. ...
Page 10
LTM4601/LTM4601-1 OPERATION Power Module Description The LTM4601 is a standalone nonisolated switching mode DC/DC power supply. It can deliver up to 12A of DC output current with some external input and output capacitors. This module provides precisely regulated output voltage ...
Page 11
APPLICATIONS INFORMATION The typical LTM4601 application circuit is shown in Figure 18. External component selection is primarily determined by the maximum load current and output voltage. Refer to Table 2 for specifi c external capacitor requirements for a particular application. ...
Page 12
LTM4601/LTM4601-1 APPLICATIONS INFORMATION For a buck converter, the switching duty-cycle can be estimated as: V OUT = Without considering the inductor current ripple, the RMS current of the input capacitor can be estimated as OUT ...
Page 13
APPLICATIONS INFORMATION Multiphase operation with multiple LTM4601 devices in parallel will lower the effective output ripple current due to the interleaving operation of the regulators. For ex- ample, each LTM4601’s inductor current of a 12V to 2.5V multiphase design can ...
Page 14
LTM4601/LTM4601-1 APPLICATIONS INFORMATION is frequency and m is the number of parallel phases. This calculation process can be easily fulfi lled using our Linear Technology μModule Design Tool. Fault Conditions: Current Limit and Overcurrent Foldback LTM4601 has a current mode ...
Page 15
APPLICATIONS INFORMATION Run Enable The RUN pin is used to enable the power module. The pin has an internal 5.1V Zener to ground. The pin can be driven with a logic input not to exceed 5V. The RUN pin can ...
Page 16
LTM4601/LTM4601-1 APPLICATIONS INFORMATION Thermal Considerations and Output Current Derating The power loss curves in Figures 7 and 8 can be used in coordination with the load current derating curves in Figures for calculating an approximate θ module ...
Page 17
APPLICATIONS INFORMATION 1.5V 0LFM 2 IN OUT 5V , 1.5V 200LFM IN OUT 5V , 1.5V 400LFM IN OUT AMBIENT TEMPERATURE (°C) Figure 11. No Heat Sink 12V ...
Page 18
LTM4601/LTM4601-1 APPLICATIONS INFORMATION Table 2. Output Voltage Response Versus Component Matrix (Refer to Figure 18 Load Step TYPICAL MEASURED VALUES C VENDORS PART NUMBER OUT1 TDK C4532X5R0J107MZ (100UF ,6.3V) TAIYO YUDEN JMK432BJ107MU-T ( 100μF , 6.3V) TAIYO ...
Page 19
APPLICATIONS INFORMATION Table 3. 1.5V Output at 12A DERATING CURVE V (V) IN Figures Figures Figures Figures 10 Figures 10 Figures 10, ...
Page 20
LTM4601/LTM4601-1 APPLICATIONS INFORMATION Layout Checklist/Example The high integration of LTM4601 makes the PCB board layout very simple and easy. However, to optimize its electri- cal and thermal performance, some layout considerations are still necessary. • Use large PCB copper areas ...
Page 21
APPLICATIONS INFORMATION Frequency Adjustment The LTM4601 is designed to typically operate at 850kHz across most input conditions. The f open or decoupled with an optional 1000pF capacitor. The switching frequency has been optimized for maintaining constant output ripple noise over ...
Page 22
LTM4601/LTM4601-1 APPLICATIONS INFORMATION Solution Lower the switching frequency at lower input voltages to allow for higher duty cycles, and meet the 400ns mini- mum off-time at 4.5V input voltage. The off-time should be about 500ns with 100ns guard band. The ...
Page 23
APPLICATIONS INFORMATION V IN 4.5V TO 16V R2 100k PGOOD C2 10μF 25V 3 V OUT V IN 4.5V TO 20V R2 100k PGOOD + C IN BULK C OPT IN 10μF 25V 3 CER 5% MARGIN V OUT TRACK/SS ...
Page 24
LTM4601/LTM4601-1 APPLICATIONS INFORMATION V IN 4.5V TO 20V + C1 0.1μF LTC6908 118k V OUT1 GND OUT2 3 4 SET MOD 2-PHASE OSCILLATOR 4.5V TO 20V *C5 OPTIONAL TO REDUCE ANY LC RINGING. NOT ...
Page 25
TYPICAL APPLICATIONS LTM4601/LTM4601-1 25 4601fb ...
Page 26
LTM4601/LTM4601-1 PACKAGE DESCRIPTION 6.9850 5.7150 4.4450 3.1750 1.9050 0.6350 0.0000 0.6350 1.9050 3.1750 4.4450 5.7150 6.9850 bbb 4601fb ...
Page 27
PACKAGE DESCRIPTION PIN NAME INTV CC A8 PLLIN A9 TRACK/SS B9 A10 RUN A11 COMP A12 MPGM PIN NAME G1 PGND ...
Page 28
LTM4601/LTM4601-1 PACKAGE DESCRIPTION PIN NAME PIN NAME ...
Page 29
... Added Note 5 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTM4601/LTM4601-1 PAGE NUMBER ...
Page 30
... Pin Compatible with the LTM4600 Synchronizable, PolyPhase Operation to 48A, LTM4601-1 Version Has No Remote Sensing, Pin Compatible with the LTM4601 This product contains technology licensed from Silicon Semiconductor Corporation. ● www.linear.com ® 4601fb LT 0110 REV B • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2007 ...