Datasheet

TYPICAL CHARACTERISTICS
TPS62250
SLVS842 – SEPTEMBER 2008 .......................................................................................................................................................................................... www.ti.com
Table of Graphs
FIGURE
Output Current V
OUT
= 1.8 V, Power Save Mode, MODE = GND Figure 1
Output Current V
OUT
= 1.8 V, PWM Mode, MODE = V
IN
Figure 2
Output Current V
OUT
= 3.3 V, PWM Mode, MODE = V
IN
Figure 3
η Efficiency
Output Current V
OUT
= 3.3 V, Power Save Mode, MODE = GND Figure 4
Output Current Figure 5
Output Current Figure 6
at 25 ° C, V
OUT
= 1.8 V, Power Save Mode, MODE = GND Figure 7
at – 40 ° C, V
OUT
= 1.8 V, Power Save Mode, MODE = GND Figure 8
at 85 ° C, V
OUT
= 1.8 V, Power Save Mode, MODE = GND Figure 9
Output Voltage Accuracy
at 25 ° C, V
OUT
= 1.8 V, PWM Mode, MODE = V
IN
Figure 10
at – 40 ° C, V
OUT
= 1.8 V, PWM Mode, MODE = V
IN
Figure 11
at 85 ° C, V
OUT
= 1.8 V, PWM Mode, MODE = V
IN
Figure 12
Typical Operation PWM Mode, V
OUT
= 1.8 V Figure 13
MODE Pin Transition From PFM to Forced PWM Mode at light load Figure 14
Mode Transition
MODE Pin Transition From Forced PWM to PFM Mode at light load Figure 15
Start-up Timing Figure 16
Forced PWM Mode , V
OUT
= 1.5 V, 50 mA to 200 mA Figure 17
Forced PWM Mode , V
OUT
= 1.5 V, 200 mA to 400 mA Figure 18
PFM Mode to PWM Mode, V
OUT
= 1.5 V, 150 µ A to 400 mA Figure 19
PWM Mode to PFM Mode, V
OUT
= 1.5 V, 400 mA to 150 µ A Figure 20
Load Transient PFM Mode, V
OUT
= 1.5 V, 1.5 mA to 50 mA Figure 21
PFM Mode, V
OUT
= 1.5 V, 50 mA to 1.5 mA Figure 22
PFM Mode to PWM Mode, V
OUT
= 1.8 V, 50 mA to 250 mA Figure 23
PFM Mode to PWM Mode, V
OUT
= 1.5 V, 50 mA to 400 mA Figure 24
PWM Mode to PFM Mode, V
OUT
= 1.5 V, 400 mA to 50 mA Figure 25
PFM Mode, V
OUT
= 1.8 V, 50 mA Figure 26
Line Transient
PFM Mode, V
OUT
= 1.8 V, 250 mA Figure 27
PFM V
OUT
Ripple, V
OUT
= 1.8 V, 10 mA, L = 2.2 µ H, C
OUT
= 10 µ F Figure 28
Typical Operation
PFM V
OUT
Ripple, V
OUT
= 1.8 V, 10 mA, L = 4.7 µ H, C
OUT
= 10 µ F Figure 29
Shutdown Current into VIN vs Input Voltage, (T
A
= 85 ° C, T
A
= 25 ° C, T
A
= -40 ° C) Figure 30
Quiescent Current vs Input Voltage, (T
A
= 85 ° C, T
A
= 25 ° C, T
A
= -40 ° C) Figure 31
Figure 32
Static Drain Source On-State
vs Input Voltage, (T
A
= 85 ° C, T
A
= 25 ° C, T
A
= -40 ° C)
Resistance
Figure 33
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