HT72XX Series
Electrical Characteristics
Symbol
V
IN
DV
OUT
I
SS
DV
LOAD
V
DROP
DV
LINE
I
LIM
D
V
O
D
T
a
U T
T
j
=25°C, V
IN
=V
OUT
+1.0V, I
O
=1mA, unless otherwise specified
Test Conditions
¾
¾
I
O
=0mA
1mA£I
OUT
£300mA
DV
OUT
=2%
I
OUT
=300mA
V
O
£1.8V
2.5V£V
O
£2.7V
3.0V£V
O
£5.0V
Min.
¾
-2
¾
¾
¾
¾
¾
¾
300
¾
Typ.
¾
¾
5
0.004
800
350
240
0.2
¾
±0.8
Max.
8
2
7
0.008
1200
400
300
0.3
¾
¾
%/V
mA
mV/°C
mV
Unit
V
%
mA
%/mA
Parameter
Input Voltage
Output Voltage Tolerance
Quiescent Current
Load Regulation (Note1)
Dropout Voltage (Note2)
Line Regulation
Current Limit (Note3)
Temperature Coefficient
V
OUT
+1.0V£V
IN
£8.0V
DV
OUT
=10%
-40°C<Ta<85°C
Note:
1. Load regulation is measured at a constant junction temperature, using pulse testing with a low ON time and
is guaranteed up to the maximum power dissipation. Power dissipation is determined by the input/output
differential voltage and the output current. Guaranteed maximum power dissipation will not be available over
the full input/output range. The maximum allowable power dissipation at any ambient temperature is
P
D
= (T
J(MAX)
-
Ta) /
q
JA
.
2. Dropout voltage is defined as the input voltage minus the output voltage that produces a 2% change in the
output voltage from the value at V
IN
= V
OUT
+1V with a fixed load.
3. Current limit is measured by pulsing for a short time.
Application Circuits
Basic Circuits
V
IN
V IN
H T 7 2 X X
S e r ie s
G N D
V O U T
V
O U T
C 1
1
m
F
C 2
2 .2
m
F
C o m m o n
S in g le p o in t G N D
C o m m o n
Typical Application Circuits
·
High output current positive voltage regulator
T r1
V
IN
I
C
1
V IN
R 1
C 1
1 0
m
F
H T 7 2 X X
S e r ie s
G N D
V O U T
I
R
E G
V
I
O
C 2
1 0
m
F
O U T
C o m m o n
S in g le p o in t G N D
V
=
1
B E 1
C o m m o n
R
I
R
I
O
= I
C
E G
-
+ I
R
I
C
1
E G
,
(1 +
b
)
1
Rev. 1.10
3
June 20, 2007
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
