HT73xx-2
30V, 250mA TinyPower
TM
LDO
Features
• Low power consumption
• Low voltage drop
•
Low temperature coefficient
• High input voltage - up to 30V
• Output voltage accuracy: tolerance ±1%
• Over current protection
• Package types: 3-pin TO92, 3-pin SOT89 and
8-pin SOP-EP
General Description
The HT73xx-2 device series are low power high
voltage regulators implemented in CMOS technology
which have the advantages of low voltage drop and
low quiescent current. They allow input voltages as
high as 30V. They are available with several fixed
output voltages ranging from 2.1V to 5.0V. The soft-
start function inhibits the problem of output overshoot
during power on.
Although designed primarily as fixed voltage
regulators, these devices can be used with external
components to obtain variable voltages and currents.
Applications
• Battery-powered equipment
• Communication equipment
• Audio/Video equipment
Selection Table
Part No.
HT7321-2
HT7323-2
HT7325-2
HT7327-2
HT7330-2
HT7333-2
HT7336-2
HT7340-2
HT7344-2
HT7350-2
Output Voltage
2.1V
2.3V
2.5V
2.7V
3.0V
3.3V
3.6V
4.0V
4.4V
5.0V
TO92
SOT89
8SOP-EP
73xx-2 (for TO92, SOT89)
HT73xx-2 (for 8SOP-EP)
Package
Marking
Note: ″xx″ stands for output voltages
Rev. 1.10
1
August 06, 2018
HT73xx-2
Block Diagram
VIN
OUT
Vref
Soft Start
GND
Pin Assignment
TO92
SOT89
73xx-2
OUT
73xx-2
NC
NC
1
GND
2
VIN
3
OUT
NC
1
2
3
4
8
VIN
NC
NC
GND
9
VIN
7
6
5
HT73xx-2
8 SOP-EP-A
1 2 3
GND VIN VOUT
Pin Descriptions
Pin No.
TO92
1
2
3
—
SOT89
1
2
3
—
8SOP-EP
5
8, 9
1
2, 3, 4, 6, 7
Pin Name
GND
VIN
OUT
NC
Pin Description
Ground pin
Input pin
Output pin
No connection
Rev. 1.10
2
August 06, 2018
HT73xx-2
Absolute Maximum Ratings
Parameter
V
IN
Operating Temperature Range, T
a
Maximum Junction Temperature, T
J(MAX)
Storage Temperature Range
TO92
Junction-to-Ambient Thermal Resistance,
θ
JA
SOT89
8SOP-EP
TO92
Power Dissipation, P
D(MAX)
SOT89
8SOP-EP
Value
-0.3 to +33
-40 to +85
+150
-65 to +165
200
200
125
0.50
0.50
0.80
Unit
V
o
o
o
C
C
C
°C/W
°C/W
°C/W
W
W
W
Note: P
D(MAX)
is measured at T
a
= 25°C
Recommended Operating Range
Parameter
V
IN
Value
V
OUT
+2 to 30
Unit
V
Electrical Characteristics
Symbol
V
IN
V
OUT
V
O
I
OUT
∆V
OUT
V
DIF
I
SS
Parameter
Input Voltage
Output Voltage Range
V
IN
=(V
OUT
+2V), T
a
=+25
o
C and C
IN
=C
OUT
=10uF, unless otherwise specified
Test Conditions
—
—
—
Min.
—
2.1
–1
250
—
—
—
—
—
—
—
(Note)
Typ.
—
—
—
—
45
6
120
2.5
0.2
±100
350
Max.
30
5.0
1
—
90
15
300
4.0
0.4
—
700
Unit
V
V
%
mA
mV
mV
uA
%/V
ppm/°C
mA
Output Voltage Accuracy I
OUT
=10mA
Output Current
Load Regulation
Dropout Voltage
Quiescent Current
1mA ≤ I
OUT
≤ 100mA
I
OUT
=1mA, V
OUT
Change=2%
(Note)
I
OUT
=30mA, V
OUT
Change=2%
I
OUT
=0mA
(V
OUT
+2V) ≤ V
IN
≤ 30V, I
OUT
=40mA
I
OUT
=40mA, -40°C < T
a
< 85°C
V
IN
=12V
∆V
OUT
Line Regulation
∆V
IN
× V
OUT
∆V
OUT
Temperature Coefficient
∆Ta × V
OUT
I
OCP
Over Current Protection
Note: 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
+2V with a fixed load.
Rev. 1.10
3
August 06, 2018
HT73xx-2
Typical Performance Characteristic
Test Condition: V
IN
=V
OUT
+2V, I
OUT
=10mA, C
IN
=10μF, C
OUT
=10μF and T
a
=25ºC, unless otherwise noted
Line Regulation: HT7333-2 (I
OUT
=10mA)
Line Regulation: HT7350-2 (I
OUT
=10mA)
I
SS
vs V
IN
: HT7333-2 (I
OUT
=0mA)
200
160
I
SS
vs V
IN
: HT7350-2 (I
OUT
=0mA)
I
SS
(uA)
120
80
40
0
0
50
100
I
OUT
(mA)
150
200
-40°C
+25°C
+85°C
250
I
SS
vs I
OUT
: HT7333-2 (V
IN
=5.3V)
1400
1200
V
DIF
(mV)
I
SS
vs I
OUT
: HT7350-2 (V
IN
=7.0V)
900
800
700
600
500
400
300
200
100
0
0
-40°C
+25°C
-40°C
+25°C
+85°C
1000
800
600
400
200
0
0
50
100
I
OUT
(mA)
150
200
250
V
DIF
(mV)
+85°C
50
100
I
OUT
(mA)
150
200
250
Dropout Voltage: HT7333-2
Dropout Voltage: HT7350-2
Rev. 1.10
4
August 06, 2018
HT73xx-2
Test Condition: V
IN
=V
OUT
+2V, I
OUT
=10mA, C
IN
=10μF, C
OUT
=10μF and T
a
=25ºC, unless otherwise noted
Load Transient Response:
HT7333-2 (V
IN
=5.3V, I
OUT
=0mA to 40mA)
Load Transient Response:
HT7350-2 (V
IN
=7.0V, I
OUT
=0mA to 40mA)
Load Transient Response:
HT7333-2 (V
IN
=5.3V, I
OUT
=40mA to 0mA)
Load Transient Response:
HT7350-2 (V
IN
=7.0V, I
OUT
=40mA to 0mA)
Line Trasient Response:
HT7333-2 (I
OUT
=10mA)
Line Trasient Response:
HT7350-2 (I
OUT
=10mA)
Rev. 1.10
5
August 06, 2018
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