LM3489_15 Datasheet, PDF (8/25 Pages) Texas Instruments – Hysteretic PFET Buck Controller With Enable Pin

LM3489
LM3489-Q1
SNVS443B – MAY 2006 – REVISED FEBRUARY 2013
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Typical Performance Characteristics (continued)
All curves taken at VIN = 12V with configuration in Design Information. T_J = 25°C, unless otherwise specified.
Discontinuous Mode Operation
Load Transient
(V_IN = 12V, V_OUT =3.3 V, I_OUT = 50mA)
(V_OUT = 3.3 V, 50 mA - 500 mA Load)
V_OUT RIPPLE
(20 mVac/Div)
Switch Node Voltage, V_D1 (10V/Div)
I_L (500 mA/Div)
TIME (4 Ps/DIV)
Figure 20.
Enable Transient
(V_OUT = 3.3 V, 500 mA Loaded)
Figure 21.
Shutdown Transient
(V_OUT = 3.3 V, 500 mA Loaded)
Figure 22.
Figure 23.
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