regulator ICs with high output voltage accuracy, The
devices possess the benefits of dual outputs, low
output noise, high ripple rejection ratio, low dropout
and very fast turn-on times.
The devices include a reference voltage sources, error
amplifiers, driver transistors, current limiters and
phase compensators, all fully integrated.
The HT72Dxxxx’s current limiters' fold back circuit
also operates as a short circuit protect function for
the output current limiter. This high level of output
stability is maintained even during frequent load
fluctuations, due to the excellent transient response
performance and high PSRR achieved across a broad
range of frequencies. The output voltage for each of
the dual internal regulators is fully independent. The
device has independent enable pins to shutdown each
internal regulator, resulting in greatly reduced power
consumption.
Applications
●
Mobile phones
●
Cordless phones and radio communication
equipment
●
Portable games
●
Camera, Video recorders
●
Portable audio equipment
Rev. 1.00
1
August 08, 2011
HT72Dxxxx
Pin Assignment
VOUT1
6
VSS
5
VOUT2
4
Top View
1
EN1
2
VIN
3
EN2
Pin Assignment
Pin
1
2
3
4
5
6
Name
EN1
V
IN
EN2
V
OUT2
V
SS
V
OUT1
Input Pin
Regulator 2 Enable - high enable
Regulator 2 Output
Ground Pin
Regulator 1 Output
Pin Description
Regulator 1 Enable - high enable
Block Diagram
VIN
Short Current
Shutdown
VOUT1
EN1
V
ref
VSS
VOUT2
Short Current
Shutdown
EN2
V
ref
Absolute Maximum Ratings (Note 1)
Maximum Input Supply Voltage...........................................................................................................................7.5V
Power Dissipation............................................................................................................................................250mW
Ambient Temperature Range................................................................................................................-40°C ~ +85°C
Storage Temperature Range................................................................................................................-55°C ~ +125°C
Rev. 1.00
2
August 08, 2011
HT72Dxxxx
ELECTRICAL CHARACTERISTICS
T
J
=25
°C
, V
IN
=V
OUT
+1.0V, I
OUT
=30mA, unless otherwise specified (Note 2)
Symbol
V
IN
V
OUT
I
OUT
∆V
LINE
∆V
LOAD
Parameter
Input Voltage
Output Voltage Tolerance
Line Regulation
Load Regulation (Note 4)
I
OUT
=30mA
V
OUT
+0.5V≤V
IN
≤7V
I
OUT
=10mA
1.5V≤V
OUT
≤1.8V
1mA≤I
OUT
≤300mA
2.5V≤V
OUT
≤3.0V
3.3V≤V
OUT
≤5.0V
V
DROP
V
NO
I
LIMIT
I
SS
I
DS
V
IH
V
IL
RR
Dropout Voltage (Note5)
Output Voltage Noise
Short Current Limit
Supply Current
Shutdown Current
EN Input High Voltage
EN Input Low Voltage
Ripple Rejection
∆V
OUT
= 2%
I
OUT
=300mA
V
OUT
=0V
I
OUT
=0mA, V
EN1
=V
EN2
=V
IN
V
EN1
=V
EN2
=V
SS
V
OUT
+1V≤V
IN
≤7V
V
OUT
+1V≤V
IN
≤7V
I
OUT
=30mA
f=1kHz
f=10kHz
1.5V≤V
OUT
≤1.8V
2.5V≤V
OUT
≤5.0V
Maximum Output Current(Note 3) I
OUT1
, I
OUT2
Test Conditions
—
Min.
2.5
-2
300
—
—
—
—
—
—
—
—
—
—
2.0
—
—
—
—
—
—
Typ.
—
—
—
0.02
10
15
20
0.6
0.34
30
90
30
0.1
-
-
70
53
±100
150
Max.
7
+2
—
0.1
20
30
40
0.9
0.64
—
—
50
1
—
0.4
—
—
—
—
V
μV
RMS
mA
μA
μA
V
dB
ppm/°C
°C
mV
Unit
V
%
mA
%/V
Bandwidth=10Hz to 100kHz
∆
V
OUT
Temperature Coefficient
∆
T
a
•
V
OUT
-40°C<Ta<85°C
T
SD
Thermal Shutdown Temperature
Note 1. Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating
Ratings indicate conditions for which the device is intended to be functional, but do not guarantee
specific performance limits. The guaranteed specifications apply only for the test conditions listed.
2. Specifications are production tested at T
A
=room temperature. Specifications over the -40°C to 85°C
operating temperature range are assured by design, characterization and correlation with Statistical
Quality Controls (SQC).
3. The input/output differential voltage multiplied by the output current must be less than than the package
power dissipation value of 250mW.
4. Load regulation is measured at constant junction temperature, using pulse testing with a short ON time.
The devices are 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)
– T
A
)/θ
JA
.
5. Dropout voltage is the minimum input to output voltage differential needed to maintain regulation at a
specified output current. During dropout conditions, the output voltage will be equal to: V
IN
– V
DROP
.
Rev. 1.00
3
August 08, 2011
HT72Dxxxx
Output Voltage Selector Guide
Type Code
Part No.
HT72D1518
HT72D1525
HT72D1528
HT72D1533
HT72D1825
HT72D1828
HT72D1830
HT72D1833
HT72D2528
HT72D2533
HT72D2833
HT72D3033
Mark
2D1518
2D1525
2D1528
2D1533
2D1825
2D1828
2D1830
2D1833
2D2528
2D2533
2D2833
2D3033
Output Voltage
Out 1
1.5
1.5
1.5
1.5
1.8
1.8
1.8
1.8
2.5
2.5
2.8
3.0
Out 2
1.8
2.5
2.8
3.3
2.5
2.8
3.0
3.3
2.8
3.3
3.3
3.3
SOT23-6
Package
Note: The devices are all green compound devices which are Lead-free and Halogen-free.
THE EXCLUSIVE PROPERTY OF HOLTEK AND SHALL NOT BEINFORMATION CONTAINED HEREIN IS THE EXCLUSIVE PROPERTY OF HOLTEK AND SHALL NOT BE DISTRIBUTED, REPRODUCED, OR
THE INFORMATION CONTAINED HEREIN THE EXCLUSIVE PROPERTY OF HOLTEK AND SHALL NOT DISTRIBUTED, REPRODUCED, OR
THE INFORMATION CONTAINED HEREIN IS
DISTRIBUTED, REPRODUCED, OR
1.86
THE INFORMATION CONTAINED HEREIN IS THE EXCLUSIVE PROPERTY OF HOLTEK AND SHALL NOT BE DISTRIBUTED, REPRODUCED, OR IS IS THE EXCLUSIVE PROPERTY OF OF HOLTEK. SHALL NOT BEBE DISTRIBUTED, REPRODUCED, OR
DISCLOSED IN WHOLE OR IN PART WITHOUT PRIOR WRITTEN PERMISSION
THE INFORMATION CONTAINED HEREIN IS THE EXCLUSIVE PROPERTY OF HOLTEK AND
THE INFORMATION CONTAINED HEREIN IS THE EXCLUSIVE PROPERTY OF HOLTEK AND SHALL NOT BE DISTRIBUTED, REPRODUCED,WITHOUT PRIOR WRITTEN PERMISSION OF HOLTEK. SHALL NOT BE DISTRIBUTED, REPRODUCED, OR
1.86
WITHOUTPRIOR WRITTEN PERMISSION OF HOLTEK.
DISCLOSED IN WHOLE OR IN PART OR
DISCLOSED IN WHOLE OR IN PART WITHOUT PRIOR WRITTEN PERMISSION OF HOLTEK.
DISCLOSED IN WHOLE OR IN PART
DISCLOSED IN WHOLE OR IN PART WITHOUT PRIOR WRITTEN PERMISSION OF HOLTEK.
DISCLOSED IN WHOLE OR IN PART WITHOUT PRIOR WRITTEN PERMISSION OF HOLTEK.
DISCLOSED IN WHOLE OR IN PART WITHOUT PRIOR WRITTEN PERMISSION OF HOLTEK.
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