Datasheet

SWITCH CURRENT LIMIT
(mA)
1.0 1.6 2.2 2.8 3.4 4.0
800
600
400
200
0
SHDN PIN VOLTAGE (V)
0.0 0.1 0.2 0.3
LOAD CURRENT (A)
0
20
40
60
80
100
EFFICIENCY (%)
V
IN
= 36V
V
IN
= 12V
V
IN
= 24V
LMR14203
www.ti.com SNVS732C –OCTOBER 2011–REVISED APRIL 2013
Typical Performance Characteristics
Efficiency vs. Load Current
(V
OUT
= 3.3V) Input UVLO Voltage vs. Temperature
Figure 2. Figure 3.
Switch Current Limit vs. SHDN Pin Voltage
(Soft-start Implementation) SHDN Pin Current vs. SHDN Pin Voltage
Figure 4. Figure 5.
Switching Node and Output Voltage Waveforms
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 200 mA
Top trace: V
OUT
, 10 mV/div, AC Coupled
Bottom trace: SW, 5V/div, DC Coupled
T = 1 µs/div
Figure 6.
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