TPS76501-Q1 Datasheet, PDF (14/21 Pages) Texas Instruments – ULTRALOW QUIESCENT CURRENT 150-mA LOW-DROPOUT VOLTAGE REGULATOR

TPS76501-Q1
ULTRALOW QUIESCENT CURRENT 150-mA LOW-DROPOUT
VOLTAGE REGULATOR
SLVS800 – DECEMBER 2007
www.ti.com
1100.0¹0
110.0⁰₀
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE⁽¹⁾
vs
ADDED CERAMIC CAPACITANCE
V_I = 4.3 V
C_O = 4.7 µF
V_O = 3.3 V
T_A = 25°C
I_O = 150 mA
101.00¹0
1.00⁰0
TYPICAL REGION OF STABILITY
EQUIVALENT SERIES RESISTANCE⁽¹⁾
vs
ADDED CERAMIC CAPACITANCE
V_I = 4.3 V
V_O = 3.3 V
C_O = 10 µF
T_A = 25°C
I_O = 150 mA
10.^−1¹0
100.^−1¹0
Minimum ESR
Region of Instability
100.^−₀²₁
0.0
0.2
0.4
0.6
0.8
1.0
Added Ceramic Capacitance − µF
Figure 25.
Minimum ESR
100.^−₀²₁
Region of Instability
0.0
0.2
0.4
0.6
0.8
1.0
Added Ceramic Capacitance − µF
Figure 26.
(1) 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.
V_I
IN
OUT
To Load
+
EN
C_O
GND
R_L
ESR
Figure 27. Test Circuit for Typical Regions of Stability (Figure 21 through Figure 24)
(Fixed-Output Options)
14
Submit Documentation Feedback
Copyright © 2007, Texas Instruments Incorporated