LM3242 Datasheet, PDF (8/32 Pages) Texas Instruments – 750mA Miniature Adjustable Step-Down DC-DC Converter

LM3242
SNOSB48E – OCTOBER 2011 – REVISED AUGUST 2015
Typical Characteristics (continued)
V_IN = EN = 3.6 V, L = 0.5 µH, C_IN = 10 µF, C_OUT = 4.7 µF and T_A = 25°C, unless otherwise noted.
0.63
2.03
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0.62
ECO to PWM
0.61
2.02
ECO to PWM
2.01
0.60
PWM to ECO
0.59
2.00
PWM to ECO
1.99
0.58
0
25 50 75 100 125 150
OUTPUT CURRENT (mA)
V_OUT = 0.6 V
1.98
0
25 50 75 100 125 150
OUTPUT CURRENT (mA)
V_OUT = 2 V
Figure 7. Output Voltage vs Output Current
Figure 8. Output Voltage vs Output Current
Figure 9. ECO-PWM Mode Threshold Current vs Output
Voltage
V_OUT = 2 V
Figure 11. Closed-Loop Current Limit vs Temperature
Figure 10. PWM-ECO Mode Threshold Current vs Output
Voltage
100
95
90
85 ^{VIN = 3.0V}
V_IN = 4.2V
V_IN = 3.6V
80
75
70
65
60
0
50 100 150 200 250
V_OUT = 0.8 V
OUTPUT CURRENT(mA)
Figure 12. Efficiency vs Output Current
8
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