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LM3687 Fiches technique(PDF) 10 Page - Texas Instruments

No de pièce LM3687
Description  Step-Down DC-DC Converter
Download  30 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

LM3687 Fiches technique(HTML) 10 Page - Texas Instruments

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VOUT_LIN
100 és/DIV
500 mV/DIV
2.0V
2.6V
1 mV/DIV
AC Coupled
IOUT_LIN = 350 mA
VIN_LIN
VOUT_LIN
VOUT_DCDC
IOUT_DCDC
5 mV/DIV
20 mV/DIV
AC Coupled
500 mA/DIV
100 mA
750 mA
no load
40 Ps/DIV
AC Coupled
VOUT_LIN
IL
VOUT_DCDC
VEN_LIN/DCDC
100 és/DIV
1V/DIV
500 mA/DIV
1V/DIV
1V/DIV
IOUT_DCDC = 700 mA
IOUT_LN = 50 mA
VBATT
VOUT_LIN
VOUT_DCDC
100 és/DIV
500 mV/DIV
3.0V
3.6V
5 mV/DIV
50 mV/DIV
AC Coupled
AC Coupled
= VIN_LIN
IOUT_LIN = 300 mA
IOUT_DCDC = 400 mA
0.01
0.1
1
10
100
1000
100
90
80
70
60
50
40
30
20
10
VBATT = 4.2V
VBATT = 2.8V
OUTPUT CURRENT DC-DC (mA)
VOUT_LIN
IL
VOUT_DCDC
VEN_LIN/DCDC
40 és/DIV
1V/DIV
200 mA/DIV
1V/DIV
1V/DIV
LM3687
SNVS473B – DECEMBER 2007 – REVISED MAY 2013
www.ti.com
Typical Performance Characteristics (continued)
Unless otherwise specified, typical application (post regulation), VBATT = 3.6V, TA = 25°C, enable pins tied to VBATT, VOUT_DCDC
= 1.8V, VOUT_LIN = 1.2V
Efficiency DC-DC
vs.
Output Current
LDO disabled
Startup into no load
Figure 11.
Figure 12.
Startup into load
VBATT Line Transient Response (PWM Mode)
Figure 13.
Figure 14.
Load Transient Response DC-DC
VIN_LIN Line Transient Response
(PWM Mode: 100mA to 750mA)
Figure 15.
Figure 16.
10
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Copyright © 2007–2013, Texas Instruments Incorporated
Product Folder Links: LM3687


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