KA78RL00
3
Electrical Characteristics
(Refer to the test circuit, Ta = 25 °C, unless otherwise specified )
Note :
1. Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total
temperature range.
2. Regulation is measured at constant junction temperature , using pulse testing with a low duty cycle.
3. V
ref
≤ V
out
≤ (V
in
- 1V), 2.5V ≤ V
in
≤ 28V, 100uA ≤ I
L
≤ 100mA, T
A
≤ T
AMAX
.
4. Threshold and hysteresis are expressed in terms of voltage differential at the Feedback terminal below the normal
reference . To express these thresholds in terms of output voltage change , multiply by the error amplifier gain
= VO / VREF = (R1 + R2) / R2 .
5. Vshutdown ≤ 0.6 V , V
OUT
=ON , Vshutdown ≥ 2.0 V, V
OUT
= OFF.
Parameter Symbol Conditions Min. Typ. Max. Unit
ALL VOLTAGE OPTIONS
Output Voltage Temperature Coefficient ∆V
/
∆T (Note1) - 50 - ppm/°C
Line Regulation (Note2) ∆V
(Vo + 1)V ≤ V
IN
≤ 28V
I
L
= 50mA
--0.4%
Load Regulation (Note2) ∆V 100uA ≤ I
L
≤ 100mA - - 0.3 %
Dropout Voltage V
D
I
L
= 100uA - - 150 mV
I
L
= 100mA - - 600 mV
Ground Current I
G
I
L
= 100uA - - 140 uA
I
L
= 100mA - - 7 mA
Current Limit I
CL
V
O
= 0V 110 165 220 mA
8-PIN VERSIONS ONLY
Reference Voltage
V
REF
(Note3)
1.235 1.26 1.285 V
V
REF
1.225 1.26 1.295 V
ERROR COMPARATOR
Output Low Voltage V
OL
V
IN
= (Vo - 0.5)V, I
OL
=400uA - 150 400 mV
High Threshold Voltage V
TH
(Note4) 25 60 - mV
Low Threshold Voltage V
TL
(Note4) - 75 140 mV
Hysteresis V
HYS
(Note4) - 15 - mV
SHUTDOWN INPUT
Shutdown Threshold Range V
SD
(Note5) 0.6 1.3 2.0 V
Shutdown Input Current I
SD
V
SD
= 2.4V - 30 100 uA
V
SD
= 28V - 450 750 uA
