TPS82690 Datasheet, PDF (13/23 Pages) Texas Instruments – 500-mA, HIGH-EFFICIENCY MicroSiP™ STEP-DOWN CONVERTER (PROFILE <1mm)

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TPS82690
TPS82695
TPS82697
SLVSA66B – JUNE 2011 – REVISED FEBRUARY 2012
TYPICAL CHARACTERISTICS (continued)
QUIESCENT CURRENT
vs
INPUT VOLTAGE
PWM SWITCHING FREQUENCY
vs
INPUT VOLTAGE
4.2
T_A = 85°C
4
T_A = 25°C
3.8
3.6
3.4
T_A = -40°C
3.2
I_O = 500 mA
3
I_O = 300 mA
2.8
2.6
I_O = 150 mA
2.4
I_O = 50 mA
2.2
3.3 3.6 3.9 4.2 4.5 4.8
V_I - Input Voltage - V
Figure 27.
2
1.8
V_O = 2.85 V
MODE = High
1.6
2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5
V_I - Input Voltage - V
Figure 28.
PFM SWITCHING FREQUENCY
vs
LOAD CURRENT
4.5
V_O = 2.85 V
4 MODE = Low
V_I = 4.5 V
START-UP
3.5
3
V_I = 3.6 V,
V_O = 2.85 V,
2.5
V_I = 3.6 V
I_O = 0 mA
2
1.5
V_I = 3.2 V
1
0.5
0
0 40 80 120 160 200 240 280 320 360 400
I_O - Load Current - mA
Figure 29.
MODE = Low
Figure 30.
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