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| LM3200 Datasheet, PDF (9/24 Pages) National Semiconductor (TI) – Miniature, Adjustable, Step-Down DC-DC Converter with Bypass Mode for RF Power Amplifiers | |||
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LM3200
www.ti.com
SNVS319C â NOVEMBER 2004 â REVISED APRIL 2013
TYPICAL PERFORMANCE CHARACTERISTICS (continued)
(Circuit in Figure 33, PVIN = VDD = EN = 3.6V, BYP = 0V, TA = 25°C, unless otherwise noted)
Automatic Bypass Operation
Forced Bypass Operation
(VIN = 4.2V to 3.0V)
(VIN = 3.0V)
VSW
VIN
VOUT
IL
VIN = 4.2V
VIN = 3.0V
5V/DIV
1V/DIV
200 mA/DIV
VCON = 1.1V
RLOAD = 15:
100 Ps/DIV
Figure 21.
Line Transient Response
(VIN = 3.0V to 3.6V)
VIN
VOUT
VOUT = 1.5V
IOUT = 200 mA
3.6V
3.0V
50 mV/DIV
AC Coupled
IL
200 mA/DIV
VSW
VOUT
40 Ps/DIV
Figure 23.
Timed Current Limit Response
(VIN = 3.6V)
2V/DIV
1V/DIV
VSW
VOUT
IL
BYP
2V/DIV
VIN = 3V
VCON = 0.5V
RLOAD = 15:
1V/DIV
200 mA/DIV
5V/DIV
100 Ps/DIV
Figure 22.
VCON Voltage Response
(VIN = 4.2V, VCON = 0.5V/1.1V)
VSW
2V/DIV
VOUT
VCON
VSW
VOUT
3.25V
VIN = 4.2V
RLOAD = 15:
100 Ps/DIV
Figure 24.
1.5V
1.08V
0.5V
Output Voltage Ripple
(VOUT = 1.5V)
2V/DIV
10 mV/DIV
AC Coupled
IL
500 mA/DIV
VOUT = 1.5V RLOAD = 15:
10 Ps/DIV
Figure 25.
IL
200 mA/DIV
VIN = 3.6V
VOUT = 1.5V
IOUT = 200 mA
400 ns/DIV
Figure 26.
Copyright © 2004â2013, Texas Instruments Incorporated
Product Folder Links: LM3200
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