LTM4604AEV#PBF Linear Technology, LTM4604AEV#PBF Datasheet

IC UMODULE DC/DC LV 4A 66-LGA

LTM4604AEV#PBF

Manufacturer Part Number
LTM4604AEV#PBF
Description
IC UMODULE DC/DC LV 4A 66-LGA
Manufacturer
Linear Technology
Series
µModuler
Type
Point of Load (POL) Non-Isolatedr
Datasheet

Specifications of LTM4604AEV#PBF

Design Resources
LTM4604A 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 ~ 125°C
Efficiency
95%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3rd Output
-
2nd Output
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTM4604AEV#PBF
Manufacturer:
AD
Quantity:
201
Company:
Part Number:
LTM4604AEV#PBFLTM4604AEV#TRPBF/AIV
Manufacturer:
LT
Quantity:
13
FEATURES
APPLICATIONS
TYPICAL APPLICATION
μModule and UltraFast are trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
, LT , LTC and LTM are registered trademarks of Linear Technology Corporation.
Complete Standalone Power Supply
±1.75% Total DC Output Error (–40°C to 125°C)
Wide Input Voltage Range: 2.375V to 5.5V
4A DC, 5A Peak Output Current
0.8V to 5V Output
Output Voltage Tracking
UltraFast
Power Good Indicator
Current Mode Control
Current Foldback Protection, Parallel/Current Sharing
Up to 95% Effi ciency
Programmable Soft-Start
Micropower Shutdown: I
Overtemperature Protection
Small and Very Low Profi le Package:
15mm × 9mm × 2.3mm LGA (0.630mm Pads)
Telecom and Networking Equipment
Servers
Storage Cards
ATCA Cards
Industrial Equipment
10μF
6.3V
3.3V to 2.5V/4A μModule™ Regulator
TM
Transient Response
PGOOD
COMP
RUN/SS
LTM4604A
3.3V
GND
V
V
IN
IN
TRACK
V
OUT
FB
Q
≤ 7μA
V
IN
2.37k
4604A TA01a
22μF
6.3V
×2
V
2.5V
4A
OUT
DESCRIPTION
The LTM
power supply with ±1.75% total output voltage error.
Included in the package are the switching controller, power
FETs, inductor and all support components. Operating over
an input voltage range of 2.375V to 5.5V, the LTM4604A
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 capaci-
tors are needed to complete the design.
The 0.630mm LGA pads with 1.27mm pitch simplify
PCB layout by providing standard trace routing and via
placement. (The LTM4604A has smaller pads than the
LTM4604.) 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.
Fault protection features include foldback current protec-
tion, thermal shutdown and a programmable soft-start
function. The LTM4604A is offered in a small thermally
enhanced 15mm × 9mm × 2.3mm LGA package and is
Pb free and RoHS compliant.
Low Voltage, 4A DC/DC
µModule with Tracking
®
4604A is a complete 4A switch mode DC/DC
100
75
70
65
95
90
85
80
0
Effi ciency vs Output Current
1
OUTPUT CURRENT (A)
2
V
V
LTM4604A
3
IN
OUT
= 3.3V
= 2.5V
4604A TA01b
4
4604af
1

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LTM4604AEV#PBF Summary of contents

Page 1

... Storage Cards ■ ATCA Cards ■ ■ Industrial Equipment , LT , LTC and LTM are registered trademarks of Linear Technology Corporation. μModule and UltraFast are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. TYPICAL APPLICATION 3.3V to 2.5V/4A μModule™ Regulator ...

Page 2

... ORDER INFORMATION LEAD FREE FINISH TRAY LTM4604AEV#PBF LTM4604AEV#PBF LTM4604AIV#PBF LTM4604AIV#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. ...

Page 3

ELECTRICAL CHARACTERISTICS operating 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 (Note 3) ΔV Line Regulation Accuracy OUT(LINE) V OUT ΔV Load Regulation Accuracy ...

Page 4

LTM4604A 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-Up V OUT 1V/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 ...

Page 6

LTM4604A 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 TRACK 4.99k TRACK SUPPLY COMP 5.76k INTERNAL COMP DECOUPLING REQUIREMENTS SYMBOL PARAMETER C External Input Capacitor Requirement 2.375V to 5.5V External Output Capacitor Requirement OUT ...

Page 8

LTM4604A OPERATION Power Module Description The LTM4604A 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 LTM4604A 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

LTM4604A 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 LTM4604A. While this pin is below 0.5V, the LTM4604A will be ...

Page 11

... 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 sce- narios. The Master and Slave data inputs can be used to implement the correct resistor values for coincident or ratio tracking ...

Page 12

LTM4604A 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 10 2.5V No Heat Sink IN OUT 4.0 3.5 3.0 2.5 2.0 1.5 ...

Page 14

LTM4604A 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 LTM4604A modules do not provide isolation from There is no internal fuse. If required, a slow IN OUT blow fuse with a rating twice the maximum input current needs to be ...

Page 16

LTM4604A TYPICAL APPLICATIONS OPEN-DRAIN PULL UP Figure 16. Two LTM4604As in Parallel, 1. Design 2.375V IN1 10μF 6.3V X5R OR X7R V = 0.8V × ((4.99k/ OUT WHERE N IS ...

Page 17

TYPICAL APPLICATIONS OPEN-DRAIN 50k 10μF 6.3V X5R OR X7R V IN PGOOD V OUT PULL UP LTM4604A COMP FB RUN/SS TRACK C SSEXT GND 0.01μF Figure 17. 3. Input, 2.5V at ...

Page 18

LTM4604A PACKAGE DESCRIPTION aaa Z PAD “A1” CORNER 4 15.00 BSC X 9.00 Y BSC PACKAGE TOP VIEW 6.350 5.080 3.810 2.540 1.270 0.000 1.270 2.540 3.810 5.080 6.350 SUGGESTED PCB LAYOUT TOP VIEW 18 LGA Package 66-Lead (15mm × ...

Page 19

... A11 GND B11 GND 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. Pin Assignment Table ...

Page 20

... LGA OUT ≤ 5V; 6.25mm × 11.25mm × 2.8mm LGA OUT ≤ 10V; 11.25mm × 9mm × 2.8mm LGA OUT ≤ 10V; 11.25mm × 9mm × 2.8mm LGA OUT 4604af LT 0808 • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 2008 ...

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