LTM4604IV#PBF Linear Technology, LTM4604IV#PBF Datasheet

IC DC/DC UMODULE 4A 66-LGA

LTM4604IV#PBF

Manufacturer Part Number
LTM4604IV#PBF
Description
IC DC/DC UMODULE 4A 66-LGA
Manufacturer
Linear Technology
Series
µModuler
Type
Point of Load (POL) Non-Isolatedr
Datasheet

Specifications of LTM4604IV#PBF

Design Resources
LTM4604 Spice Model
Output
0.8 ~ 5 V
Number Of Outputs
1
Power (watts)
20W
Mounting Type
Surface Mount
Voltage - Input
2.38 ~ 5.5 V
Package / Case
66-LGA
1st Output
0.8 ~ 5 VDC @ 4A
Size / Dimension
0.59" L x 0.35" W x 0.09" H (15mm x 9mm x 2.3mm)
Power (watts) - Rated
20W
Operating Temperature
-40°C ~ 85°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3rd Output
-
2nd Output
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTM4604IV#PBF
Manufacturer:
LT
Quantity:
218
FEATURES
APPLICATIONS
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For easier PC board layout and assembly due to in-
creased spacing between land grid pads, please refer
to the LTM4604A.
TYPICAL APPLICATION
Complete Standalone Power Supply
Wide Input Voltage Range: 2.375V to 5.5V
4A DC, 5A Peak Output Current
0.8V to 5V Output
Output Voltage Tracking
±2% Total DC Error
UltraFast
Current Mode Control
Current Foldback Protection, Parallel/Current Sharing
Small and Very Low Profi le Package:
15mm × 9mm × 2.3mm LGA
Telecom and Networking Equipment
Servers, ATCA Cards
Industrial Equipment
10μF
6.3V
TM
3.3V to 2.5V/4A μModule Regulator
Transient Response
PGOOD
COMP
RUN/SS
LTM4604
3.3V
GND
V
V
IN
IN
TRACK
V
OUT
FB
V
IN
2.37k
4604 TA01a
22μF
6.3V
2
V
2.5V
4A
OUT
DESCRIPTION
The LTM
supply. Included in the package are the switching control-
ler, power FETs, inductor and all support components.
Operating over an input voltage range of 2.375V to 5.5V,
the LTM4604 supports an output voltage range of 0.8V
to 5V, set by a single resistor. This high effi ciency design
delivers up to 4A continuous current (5A peak). Only bulk
output capacitors are needed to complete the design.
The low profi le package (2.3mm) enables utilization of
unused space on the bottom of PC boards for high density
point of load regulation. High switching frequency and
a current mode architecture enable a very fast transient
response to line and load changes without sacrifi cing
stability. The device supports output voltage tracking for
supply rail sequencing.
Fault protection features include foldback current protec-
tion, thermal shutdown and a programmable soft-start
function. The LTM4604 is offered in a space saving and
thermally enhanced 15mm × 9mm × 2.3mm LGA package
and is Pb free and RoHS compliant.
L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of
Linear Technology Corporation. UltraFast is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Low Voltage, 4A DC/DC
®
4604 is a complete 4A switch mode DC/DC power
100
95
85
75
70
65
90
80
0
µModule
Effi ciency vs Output Current
1
OUTPUT CURRENT (A)
2
with Tracking
®
V
V
3
Regulator
IN
OUT
= 3.3V
= 2.5V
LTM4604
4604 G02
4
4604fa
1

Related parts for LTM4604IV#PBF

LTM4604IV#PBF Summary of contents

Page 1

... LGA package and is Pb free and RoHS compliant. L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of Linear Technology Corporation. UltraFast is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...

Page 2

... LTM4604EV#PBF LTM4604EV#PBF LTM4604IV#PBF LTM4604IV#PBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: This product is only offered in trays ...

Page 3

ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T SYMBOL PARAMETER I Input Supply Current S(VIN) Output Specifi cations I Output Continuous Current OUT(DC) Range (See Output Current Derating Curves for Different and ...

Page 4

LTM4604 TYPICAL PERFORMANCE CHARACTERISTICS Effi ciency vs Output Current V = 2.5V IN 100 1.8V OUT V = 1.5V OUT 1.2V OUT V = 0.8V OUT ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS Start- 2V/DIV I IN 1A/DIV 200μs/DIV 2.5V OUT 22μF OUT NO LOAD (0.01μF SOFT-START CAPACITOR Temperature FB 806 804 802 800 798 796 794 ...

Page 6

LTM4604 PIN FUNCTIONS V (B1, C1, C3-C7, D7, E6 and E7): Power Input Pins. IN Apply input voltage between these pins and GND pins. Recommend placing input decoupling capacitance directly between V pins and GND pins (D8-D11, E8-E11, ...

Page 7

BLOCK DIAGRAM PGOOD RUN/ SSEXT 1000pF 4.99k TRACK TRACK SUPPLY 5.76k COMP INTERNAL COMP DECOUPLING REQUIREMENTS SYMBOL PARAMETER C External Input Capacitor Requirement 2.375V to 5.5V OUT C External Output Capacitor Requirement ...

Page 8

LTM4604 OPERATION Power Module Description The LTM4604 is a standalone non-isolated switch mode DC/DC power supply. It can deliver output current with few external input and output capacitors. This module provides a precise regulated output ...

Page 9

APPLICATIONS INFORMATION A typical LTM4604 application circuit is shown in Figure 15. External component selection is primarily determined by the maximum load current and output voltage. Refer to Table 4 for specifi c external capacitor requirements for a particular application. ...

Page 10

LTM4604 APPLICATIONS INFORMATION Run Enable and Soft-Start The RUN/SS pin provides dual functions of enable and soft-start control. The RUN/SS pin is used to control turn on of the LTM4604. While this pin is below 0.5V, the LTM4604 will be ...

Page 11

... Ratio metric modes of tracking can be achieved by selecting different resistor values to change the output tracking ratio. The master output must be greater than the slave output for the tracking to work. Linear Technology Tracker Cad26 can be used to implement different tracking scenarios. The Master and Slave data inputs can be used to implement the correct resistor values for coincident or ratio tracking ...

Page 12

LTM4604 APPLICATIONS INFORMATION 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0LFM 0.5 200LFM 400LFM 100 AMBIENT TEMPERATURE (°C) Figure 1.2V No Heat Sink IN OUT 4.0 3.5 3.0 2.5 2.0 ...

Page 13

APPLICATIONS INFORMATION 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0LFM 0.5 200LFM 400LFM 100 AMBIENT TEMPERATURE (°C) Figure 12. 3.3V to 2.5V IN OUT 110 115 105 4606 F12 No Heat Sink LTM4604 ...

Page 14

LTM4604 APPLICATIONS INFORMATION Table 2. 1.2V Output DERATING CURVE V (V) IN Figures 6, 8 3.3, 5 Figures 6, 8 3.3, 5 Figures 6, 8 3.3, 5 Figures 7, 9 3.3, 5 Figures 7, 9 3.3, 5 Figures 7, 9 ...

Page 15

APPLICATIONS INFORMATION Safety Considerations The LTM4604 modules do not provide isolation from There is no internal fuse. If required, a slow blow fuse OUT with a rating twice the maximum input current needs to be provided to ...

Page 16

LTM4604 TYPICAL APPLICATIONS OPEN-DRAIN PULL UP Figure 16. Two LTM4604s in Parallel, 1. Design. Also See the 8A LTM4608A or Dual 4A per Channel LTM4614 OPEN-DRAIN 2.375V IN1 10μF 6.3V X5R OR ...

Page 17

PACKAGE DESCRIPTION Z aaa Z Z bbb 6.350 5.080 3.810 2.540 1.270 0.4445 0.000 0.4445 1.270 2.540 3.810 5.080 6.350 LTM4604 4604fa 17 ...

Page 18

LTM4604 PACKAGE DESCRIPTION PIN NAME PIN NAME A1 GND GND B2 – A3 GND GND GND B5 – A6 GND B6 GND A7 GND B7 GND A8 GND B8 GND A9 ...

Page 19

... Added text to Layout Checklist/Example Section Updated Figure 16 Title 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. LTM4604 ...

Page 20

... Pin Compatible with the LTM4600 Synchronizable, PolyPhase Operation, LTM4603-1 Version has no Remote Sensing, Pin Compatible with the LTM4601 ≤ 5V, Parallel for Higher Output Current, 9mm × 15mm × 2.8mm 2.375V ≤ www.linear.com ● 4604fa LT 0510 REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2007 ...

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