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LTM4643 Datasheet(PDF) 5 Page - Analog Devices

Part # LTM4643
Description  20VIN, 15A Step-Down DC/DC μModule Regulator
PDF  30 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LTM4643 Datasheet(HTML) 5 Page - Analog Devices

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LTM4638
5
Rev. C
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
1V Output Transient Response
3.3V Output Transient Response
1.5V Output Transient Response
5V Output Transient Response
Start-up Waveform Without
Load Current
2.5V Output Transient Response
Efficiency vs Load Current
from 3.3VIN
Efficiency vs Load Current
from 5VIN
Efficiency vs Load Current
from 12VIN
LOAD CURRENT (A)
0
80
85
90
15
4638 G01
75
5
10
70
100
95
1.0VOUT, 500kHz
1.2VOUT, 500kHz
1.5VOUT, 500kHz
1.8VOUT, 500kHz
2.5VOUT, 500kHz
LOAD CURRENT (A)
0
80
85
90
15
4638 G02
75
5
10
70
100
95
1.0VOUT, 600kHz
1.2VOUT, 600kHz
1.5VOUT, 600kHz
1.8VOUT, 800kHz
2.5VOUT, 800kHz
3.3VOUT, 800kHz
LOAD CURRENT (A)
0
80
85
90
15
4638 G03
75
5
10
70
100
95
1.0VOUT, 600kHz
1.2VOUT, 600kHz
1.5VOUT, 800kHz
1.8VOUT, 800kHz
2.5VOUT, 1000kHz
3.3VOUT, 1000kHz
5.0VOUT, 1500kHz
100µs/DIV
OUTPUT
VOLTAGE
50mV/DIV
AC COUPLED
LOAD STEP
CURRENT
2A/DIV
4638 G04
VIN=12V, VOUT=1.0V, fS=600kHz
COUT = 3x 100µF + 1x 22µF CERAMIC CAPACITOR
INTERNAL COMPENSATION, COMPa CONNECT TO
COMPb, CFF=33pF
100µs/DIV
OUTPUT
VOLTAGE
50mV/DIV
AC COUPLED
LOAD STEP
CURRENT
2A/DIV
4638 G05
VIN=12V, VOUT=1.5V, fS=800kHz
COUT = 3x 100µF + 1x 22µF CERAMIC CAPACITOR
INTERNAL COMPENSATION, COMPb CONNECT TO
COMPb, CFF=33pF
100µs/DIV
OUTPUT
VOLTAGE
100mV/DIV
AC COUPLED
LOAD STEP
CURRENT
2A/DIV
4638 G06
VIN=12V, VOUT=2.5V, fS=1000kHz
COUT = 3x 100µF + 1x 22µF CERAMIC CAPACITOR
INTERNAL COMPENSATION, COMPa CONNECT TO
COMPb, CFF=33pF
100µs/DIV
OUTPUT
VOLTAGE
100mV/DIV
AC COUPLED
LOAD STEP
CURRENT
2A/DIV
4638 G07
VIN=12V, VOUT=3.3V, fS=1000kHz
COUT = 3x 100µF + 1x 22µF CERAMIC CAPACITOR
INTERNAL COMPENSATION, COMPa CONNECT TO
COMPb, CFF=33pF
100µs/DIV
OUTPUT
VOLTAGE
200mV/DIV
AC COUPLED
LOAD STEP
CURRENT
2A/DIV
4638 G08
VIN=12V, VOUT=5V, fS=1500kHz
COUT = 3x 100µF + 1x 22µF CERAMIC CAPACITOR
INTERNAL COMPENSATION, COMPa CONNECT TO
COMPb, CFF=33pF
5ms/DIV
RUN
5V/DIV
PGOOD
5V/DIV
VOUT
1V/DIV
IIN
0.5A/DIV
4638 G09
VIN=12V, VOUT=1V, fS=600kHz
COUT = 3x 100µF + 1x 22µF CERAMIC CAPACITOR
INTERNAL COMPENSATION, COMPa CONNECT TO
COMPb, CFF=33pF, CSS=0.1µF



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