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LM3248 Datasheet(PDF) 12 Page - Texas Instruments

Part # LM3248
Description  LM3248 2.7 MHz, 2.5A Adjustable Boost-Buck DC/DC Converter with Boost and Active Current Assist and Analog Bypass (ACB)
PDF  32 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM3248 Datasheet(HTML) 12 Page - Texas Instruments

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VBATT
IOUT
500mA/DIV
500mV/DIV
50mV/DIV
100µS/DIV
IOUT
500mA/DIV
500mV/DIV
50mV/DIV
100µS/DIV
VBUCK_OUT(AC)
VBATT
VBATT
IOUT
500mA/DIV
500mV/DIV
100mV/DIV
VBUCK_OUT(AC)
100µS/DIV
3.6V to
4.2V
60
65
70
75
80
85
90
95
100
0.01
0.10
1.00
10.00
Load Current (A)
0.4Vout
0.6Vout
0.8Vout
1.0Vout
1.8Vout
2.5Vout
3.0Vout
3.4Vout
C011
60
65
70
75
80
85
90
95
100
0.15
1.50
Load Current (A)
0.8Vout
1.0Vout
1.8Vout
2.5Vout
3.0Vout
3.4Vout
C015
60
65
70
75
80
85
90
95
100
0.15
1.50
Load Current (A)
0.8Vout
1.0Vout
1.8Vout
2.5Vout
3.0Vout
3.4Vout
C014
LM3248
SNVSA01A – JULY 2013 – REVISED SEPTEMBER 2013
www.ti.com
TYPICAL CHARACTERISTICS (continued)
For all Efficiency vs Load Current graphs, L1=1276AS-H-1R0N, L3=1285AS-H-1R5N.
Efficiency vs Load Current
Efficiency vs Load Current
VBATT=3.7V, MODE=2G, TBOOSTGATE=4.62ms
VBATT=4.0V, MODE=2G, TBOOSTGATE=4.62ms
Figure 15.
Figure 16.
Line Transient
Efficiency vs Load Current
VBATT=4.0V, MODE=2G, BOOST_GATE=LOW
VBATT=3.6V↔4.2V, TR=TF= 10µS, VOUT=1.0V, Load=600mA
Figure 17.
Figure 18.
Load Transient
Load Transient
VBATT=3.0V, VOUT=3.6V, MODE=1.8V, Load=0↔2A,
VBATT=3.8V, VOUT=3.0V, MODE=LOW, Load= 0A↔1.2A,
TR=TF=10µS
TR=TF=10µS
Figure 19.
Figure 20.
12
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Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: LM3248



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