LM3670_15 Datasheet, PDF (9/25 Pages) Texas Instruments – LM3670 Miniature Step-Down DC-DC Converter for Ultra Low Voltage Circuits

LM3670
www.ti.com
SNVS250E – NOVEMBER 2004 – REVISED FEBRUARY 2013
Typical Performance Characteristics (continued)
(unless otherwise stated: V_IN= 3.6V, V_OUT= 1.8V)
Load Transient
I_LOAD = 0mA to 280mA
Load Transient
I_LOAD = 0mA to 350mA
VOUT (50 mV/Div)
VOUT (50 mV/Div)
ILOAD = 280 mA
ILOAD = 0 mA
TIME (100 Ps/DIV)
Figure 17.
Load Transient
I_LOAD = 50mA to 350mA
VOUT (50 mV/Div)
ILOAD = 350 mA
ILOAD = 50 mA
TIME (100 Ps/DIV)
Figure 19.
PFM Mode
V_SW, V_OUT, I_INDUCTOR vs. Time
VSWITCH
(5V/Div)
VOUT
(20 mV/Div)
Inductor Current
(100 mA/Div)
ILOAD = 350 mA
ILOAD = 0 mA
TIME (100 Ps/DIV)
Figure 18.
Load Transient
I_LOAD = 100mA to 300mA
VOUT (50 mV/Div)
Inductor Current = 200 mA/Div
ILOAD = 300 mA
ILOAD = 100 mA
TIME (100 ms/DIV)
Figure 20.
PWM Mode
V_SW, V_OUT, I_INDUCTOR vs. Time
ILOAD = 150 mA
VSWITCH
(5V/Div)
VOUT
(20 mV/Div)
Inductor Current
(200 mA/Div)
TIME (2 Ps/DIV)
Figure 21.
TIME (1 Ps/DIV)
Figure 22.
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