emif06-sd03f3 STMicroelectronics, emif06-sd03f3 Datasheet - Page 18

• Manufacturer Part Number: emif06-sd03f3
• Description: 6-line Ipad?, Emi Filter And Esd Protection For Sd Card
• Manufacturer: STMicroelectronics

Low drop out voltage regulator
5.2
18/22
Load regulation and transient load regulation
The load regulation (LdR) is a static variable that indicates the change in output voltage of
the voltage controllor ΔV
current ΔI
By contrast the load transient response (LdTr) represents the dynamic peak value to be
observed during load variation.
Thermal effects due to changes in the junction temperature are circumvented by testing with
pulsed load and are to be taken into account separately.
The figure shows the boundary conditions for t
the measurement of the load transient response.
Figure 14.
out
.
Load regulation and transient load regulation
out
Vccb
Vout
Iout
Iout
IoutH
IoutL
60
50
40
30
20
10
(at constant input voltage) in the event of a change in the load
Load Regulation: LdR=f(IoutH,IoutL)
Load Transient:
0
Load regulation (LdR) and Load transient (LdTr)
Transient load regulation measurement
-10
Static and dynamic load regulation
versus temperature (typical values
LdTr = MAX( Vrise, Vfall) –LdR(IoutH,IoutL)
(typical values at 25° C)
t fall = t tr
Vrise
25
rise
LdR
, t
fall
85
, and ΔI
t rise = t tr
X: 50µs/div
Y: 50mA/div
Vfall
X: 50µs/div
Y: 10mV/div
Temperature ( °c)
LdR (mV)
LdTr (mV)
out
Time
Time
to be taken as the basis for
EMIF06-SD03F3