TPS76825Q Datasheet, PDF (14/23 Pages) Texas Instruments – FAST-TRANSIENT-RESPONSE 1-A LOW-DROPOUT VOLTAGE REGULATORS

TPS76815Q, TPS76818Q, TPS76825Q
TPS76827Q, TPS76828Q, TPS76830Q
TPS76833Q, TPS76850Q, TPS76801Q
SLVS211J – JUNE 1999 – REVISED OCTOBER 2004
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Equivalent series resistance (ESR) refers to the total series resistance, including the ESR of the capacitor, any
series resistance added externally, and PWB trace resistance to C_O.
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
vs
OUTPUT CURRENT
10
Region of Instability
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
vs
OUTPUT CURRENT
10
Region of Instability
1
V_O = 3.3 V
C_o = 4.7 µF
V_I = 4.3 V
T_A = 25°C
0.1
Region of Stability
1
V_O = 3.3 V
C_o = 4.7 µF
V_I = 4.3 V
T_J = 125°C
0.1
Region of Stability
0.01
0
10
Region of Instability
200
400
600
800
I_O − Output Current − mA
Figure 22.
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
vs
OUTPUT CURRENT
1000
Region of Instability
1
V_O = 3.3 V
C_o = 22 µF
V_I = 4.3 V
T_A = 25°C
0.1
Region of Stability
0.01
0
10
Region of Instability
200
400
600
800
I_O − Output Current − mA
Figure 23.
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE
vs
OUTPUT CURRENT
1000
Region of Instability
1
V_O = 3.3 V
C_o = 22 µF
V_I = 4.3 V
T_J = 125°C
0.1
Region of Stability
0.01
0
Region of Instability
200
400
600
800
I_O − Output Current − mA
Figure 24.
1000
0.01
0
Region of Instability
200
400
600
800
I_O − Output Current − mA
Figure 25.
1000
14