HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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HT72Dxxxx
High PSRR 300mA Dual LDO Regulator
Features
● Output Current: 300mA/Each Channel
● Dropout Voltage: 0.34V (Typ.)
(VOUT=2.5V@IOUT=300mA)
● Maximum Input Voltage: 7.0V
● Output Voltage Range: 1.5~5.0V
● High Output Voltage Accuracy: ±2%
● Low Power Consumption: 30μA (typ.)
● High Ripple Rejection: 70dB (1kHz@IOUT=30mA)
● Operating Temperature: -40°C~85°C
● Low ESR Capacitor Compatible: Ceramic
Capacitor
● Over Temperature Protection
● Current Limiting
● Ultra Small Package: SOT23-6
Applications
● Mobile phones
● Cordless phones and radio communication
equipment
● Portable games
● Camera, Video recorders
● Portable audio equipment
General Description
The HT72Dxxxx series are CMOS-based voltage
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.
Rev. 1.00
1 August 08, 2011
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HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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Pin Assignment
VOUT1
6
VSS
5
VOUT2
4
HT72Dxxxx
Top View
Pin
1
2
3
4
5
6
Block Diagram
1
EN1
Name
EN1
VIN
EN2
VOUT2
VSS
VOUT1
23
VIN EN2
Pin Assignment
Pin Description
Regulator 1 Enable - high enable
Input Pin
Regulator 2 Enable - high enable
Regulator 2 Output
Ground Pin
Regulator 1 Output
VIN
EN1
EN2
Short Current
Shutdown
Vref
Short Current
Shutdown
Vref
VOUT1
VSS
VOUT2
Absolute Maximum Ratings (Note 1)
Maximum Input Supply Voltage...........................................................................................................................7.5V
VOUT1, VOUT2 to VSS..................................................................................................................VSS - 0.3V ~ VIN + 0.3V
Power Dissipation............................................................................................................................................250mW
Ambient Temperature Range................................................................................................................-40°C ~ +85°C
Junction Temperature.......................................................................................................................................+150°C
Storage Temperature Range................................................................................................................-55°C ~ +125°C
Rev. 1.00
2 August 08, 2011
Datasheet pdf - http://www.DataSheet4U.net/


HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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HT72Dxxxx
ELECTRICAL CHARACTERISTICS
TJ=25°C, VIN=VOUT+1.0V, IOUT=30mA, unless otherwise specified (Note 2)
Symbol
Parameter
Test Conditions
VIN Input Voltage
VOUT
Output Voltage Tolerance
IOUT=30mA
IOUT Maximum Output Current(Note 3) IOUT1 , IOUT2
∆VLINE Line Regulation
VOUT+0.5VVIN7V IOUT =10mA
1.5VVOUT1.8V
∆VLOAD Load Regulation (Note 4)
1mAIOUT300mA 2.5VVOUT3.0V
3.3VVOUT5.0V
VDROP Dropout Voltage (Note5)
∆VOUT= 2%
IOUT=300mA
1.5VVOUT1.8V
2.5VVOUT5.0V
VNO Output Voltage Noise
Bandwidth=10Hz to 100kHz
ILIMIT
Short Current Limit
VOUT=0V
ISS Supply Current
IOUT=0mA, VEN1=VEN2=VIN
IDS Shutdown Current
VEN1=VEN2=VSS
VIH EN Input High Voltage
VOUT+1V≤VIN≤7V
VIL EN Input Low Voltage
VOUT+1V≤VIN≤7V
RR Ripple Rejection
f=1kHz
IOUT=30mA f=10kHz
VOUT
Ta VOUT
Temperature Coefficient
-40°C<Ta<85°C
TSD Thermal Shutdown Temperature
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
Unit
V
%
mA
%/V
mV
V
μVRMS
mA
μA
μA
V
dB
— ppm/°C
— °C
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 TA=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 PD = (TJ(MAX) – TA)/θJA.
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: VIN – VDROP.
Rev. 1.00
3 August 08, 2011
Datasheet pdf - http://www.DataSheet4U.net/


HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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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
Out 2
1.5 1.8
1.5 2.5
1.5 2.8
1.5 3.3
1.8 2.5
1.8 2.8
1.8 3.0
1.8 3.3
2.5 2.8
2.5 3.3
2.8 3.3
3.0 3.3
Note: The devices are all green compound devices which are Lead-free and Halogen-free.
Typical Application Circuit
VIN
CIN
1uF
EN1 VOUT1
VIN VSS
EN2 VOUT2
HT72Dxxxx
VOUT1
CL1
1uF
VOUT2
CL2
1uF
Package
SOT23-6
Rev. 1.00
4 August 08, 2011
Datasheet pdf - http://www.DataSheet4U.net/


HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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Datasheet pdf - http://www.DataSheet4U.net/


HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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文件號碼:
版別:
頁碼:
4
2
0
HT72Dxxxx
www.DataSheet.co.kr
DOC. NO.
REV.
PAGE
2 -50
-25
0
25 50 75 100
文件號碼:
DO1C.. NSOu.pply
CSuurprepnlyt
vCsu. rTreemntpvesra.tTuerempReErVa.::ture
頁碼:
PAGE
0
-50
-25
0Temp2e5ratureH5(0ToC7) 2D75xxx1x00
Temperature (oC)
1. Supply CSuurprepnl2yt4vCsu. rTreemntpvesra1.t.T5uVer(emonpe echraantnuerl eonly)
5.0V(one channel only)
24
22
20
2418
2216
2014
1812
1610
14 8
12 6
10 4
82
60
4 -50
2
0
-50
24
22
20
2418
2216
2014
1812
1610
14 8
12 6
10 4
82
1.5V(one channel only)
-25 0
25 50
Temperature (oC)
VIN=2.5V
VIN=2.5V
75
10D0OC. NO11111222.02468024680241111122-50246802468020-50
5.0V(one channel only)
VIN=6.0V
VIN=6.0V
-25
-25
0 25 50 75100
0 Temp2e5rature5(0oC)
RREEVV..
75
100
-25
0
25
50
75
DOC.
1004.
NO.
Dropout
Voltage
vTse.mOpeurtaptuurteC(ouCr)renRRtEEVV..
Temperature (oC)
1.8V(one channel only)
4. DroCDpIINNro=ouCptOOoVUUuToT=tlt1VauogFletaVvgIIsNNe=. VOvOsOuUU.tTTpO+u1utVtCpurtrCenutrrent
PPAAGGEE
PPAAGGEE
CDIINNr=oCpOOoUUuTT=t 1VuoFltaVgIINNe=VvOsOUU.TTO+1uV1tp.5uVt Current
1.8V(one channel only) 1.0本資料為盛群半導體股份有限公司專有之財產,非經書面許可不准透露或使用本資料,亦不准複印、複製或轉變成任何其他形式使用。
THE INFORMATION CONTAINED HEREIN IS THE EXCLUSIVE PROPERTY OF HOLTEK AND SHALL NOT BE DISTRIBUTED, REPRODUCED, OR
0.9 1.5VDISCLOSED IN WHOLE OR IN PART WITHOUT PRIOR WRITTEN PERMISSION OF HOLTEK.
1.0本資料為盛群半導體股份有限公司專有之財產,非經書面許可不准透露或使用本資料,亦不准複印、複製或轉變成任何其他形式使用。
TDHIVSECINILNV=OFIS2NOE=.RD82MVI.NA8TWVIOHNOLCEONOTRAININPEAD0000RH....T6789E0000WR....IE5678TIHNOISUTTHPERIEOX82-2-R4C4555WL002-8oo2-ooUCC4RCo4o55C5CSI00TooIooCCVCoToCCEENPRPOERPEMRITSSYIOONF
HOLTEK AND
OF HOLTEK.
SHALL
NOT
BE
DISTRIBUTED,
REPRODUCED,
OR
0.50.4
0.40.3
6 0 0.30.2
4 -50
2
0
-50
-25
-25
0 25 50
Temperature (oC)
0 25 50
75
75
100
100
0.20.1
0.10.0
0.0 0
50 100 150 200 250
文件號碼:
Temperature(oC)
頁碼:
0 50 1O00utput1C50urren2t0(m0 A) 250
DOC. NO.
REV.
PAGE
C =C =1uF V =V +1V本資料為盛群半導體股份有限公司專有之財產,非經書面許可不准透露或使用本資料,亦不准複印、複製或轉變成任何其他形式使IINN
OOUUTT
OIINNutpOuOtUUTCT urrent(mA)
THE INFORMATION CONTAINED HEREIN IS THE EXCLUSIVE PROPERTY OF HOLTEK AND SHALL NOT BE DISTRIBUTED, REPRODUCED, OR
DISCLOSED IN WHOLE OR IN PART WITHOUT PRIOR WRITTEN PERMISSION OF HOLTEK.
C =C =1uF V =V +1V1.8V2.8V(one channel only)
IINN
24本資料為盛群半導體股份有限公司專有之財產,非經書面許可不准透露或使用本資料,亦不准複印、複製或轉變成任何其他形式使用。
OOUUTT
1.0
1.8VTHE INFORMATION CONTAINED HEREIN IS THE EXCLUSIVE PROPERTY OF HOLTEK AND SHALL NOT BE DISTRIBUTED, REPRODUCED, OR
22 1.00.9DISCLOSED IN WHOLE OR IN PART WITHOUT PRIOR WRITTEN PERMISSION OF HOLTEK.
20 0.90.8
18
16
14
0.80.7
0.70.6
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300
10 0.50.4
8 0.40.3
6
4
2
0.30.2
0.20.1
0 0.10.0
-50 -25 0 25 50 75 100 0.0 0 50 100 150 200 250 300
Temperature (oC)
0 50 1O00utput1C50urren2t0(m0 A) 250 300
Output Current(mA)
24
Rev22.020.00
18
Rev. 11.600
14
12
10
8
6
4
2
5.0V(one channel only)
使使使使
TTHHEE IINNFFOORRMMAATTIIOONN CCOONNTTAAIINNEEDD HHEERREEIINN IISS TTHHEE EEXXCCLLUUSSIIVVEE PPRROOPPEERRTTYY OOFF HHOOLLTTEEKK AANNDD SSHHAALLLL NNOOTT BBEE DDIISSTTRRIIBBUUTTEEDD,, RREEPPRROODDUUCCEEDD,,
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TTHHEE IINNFFOORRMMAATTIIOONN CCOONNTTAAIINNEEDD HHEERREEIINN IISS TTHHEE EEXXCCLLUUSSIIVVEE PPRROOPPEERRTTYY OOFF HHOOLLTTEEKK AANNDD SSHHAALLLL NNOOTT BBEE DDIISSTTRRIIBBUUTTEEDD,, RREEPPRROODDUUCCEEDD,, OORR
6 July 21, 2011DDIISSCCLLOOSSEEDD IINN WWHHOOLLEE OORR IINN PPAARRTT WWIITTHHOOUUTT PPRRIIOORR WWRRIITTTTEENN PPEERRMMIISSSSIIOONN OOFF HHOOLLTTEEKK..
VIN=6.0V
6
August 08, 2011
Datasheet pdf - http://www.DataSheet4U.net/


HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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文件號碼:
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頁碼:
DOC. NO.
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REV.
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PAGE
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CIN=COUT=1uF VIN=VOUT+1V
REV.
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REV.
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PAGE
CIN=COUT=1uF VIN=VOUT+21.V8V
0.7
2.8V
00..76
6. Ripple Rejection vs. Frequency
HT7R2DipXXpXlXe(3R0e0mjeAc) VtiOoUTn=1v.5sV.VFIN=re2.q5Vu(eIOnUTc=y3080150mA)
00..65
85oC
25oC
00..54
8-450oCoC
25oC
00..43 -40oC
00..32
00..21
00..10
0.0 0
0
50 100 150 200 250 300
50 O1u0t0put C1u5r0rent(2m0A0) 250 300
Output Current(mA)
CIN=COUT=1uF VIN=VOUT+1V
CIN=COUT=1uF VIN=VOUT+1V
5.0V
0.5
5.0V
0.5
0.4
0.4
85oC
25oC
0.3 8-450oCoC
25oC
0.3 -40oC
0.2
HT72Dxxxx VOUT=1.5V VIN= 2.5V (IOUT=30, 80, 150mA)
Load Transient Response
0.2
0.1
0.1
0.0
0.0 0
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100
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200
250
300 本資料為盛群半導體股份有限公司專有之財產,非經書面許可不准透露或使用本資料,亦不准複印、複製或轉變成任何其他形式使用。
THE INFORMATION CONTAINED HEREIN IS THE EXCLUSIVE PROPERTY OF HOLTEK AND SHALL NOT BE DISTRIBUTED, REPRODUCED, OR
DISCLOSED IN WHOLE OR IN PART WITHOUT PRIOR WRITTEN PERMISSION OF HOLTEK.
50 O1u0t0put C1u5r0rent(2m0A0) 版別250 300 頁碼:
Output Current(mA) REV.
PAGE
5.S料為uSpupplyplCyuCrruernrtevnst .vIsn.pIuntpVuotlVtaoglte使age資料,亦不准複印、複製或轉變成任何其他形式使用。
THE INFORMATION CONTAINED HEREIN IS THE EXCLUSIVE PROPERTY OF HOLTEK AND SHALL NOT BE DISTRIBUTED, REPRODUCED, OR
HT72D5015 V =1.5V V =2.5VDISCLOSEDIN WHOLE ORINPARTWITHOUTPRIORWRITTENPERM使ISSIONOFHOLTEK. 印、複製或轉變成任何其他形式使用。
HT72D2818 C =C =1uF V =0V V = V40THE INFORMATION CONTAINED HEREIN IS THE EXCLUSIVE PROPERTY OF
DISCLOSED IN WHOLE OR IN PART WITHOUT PRIOR WRITTEN PERMISSION
HOLTEK AND
OF HOLTEK.
SHALL
NOT
BE
DISTRIBUTED,
REPRODUICNED,
OORUT2
OUT2
EN1
IN
EN2 IN
35
30
25
20
15
10
5
0
34567
Input Voltage (V)
Rev. 1.00
HT72D5015 VOUT2=1.5V VIN=2.5V
CIN=COUT2=1uF VEN1=0V VEN2= VIN
7 August 08, 2011
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HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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HT72Dxxxx
HT72D2818 VOUT2=1.8V VIN=2.8V
CIN=COUT2=1uF VEN1=0V VEN2= VIN
HT72D2818 VOUT1=2.8V VIN=3.8V
CIN=COUT1=1uF VEN1= VIN VEN2=0V
HT72D2818 VOUT2=1.8V VIN=2.8V
CIN=COUT2=1uF VEN1=0V VEN2= VIN
HT72D5015 VOUT1=5.0V VIN=6.0V
CIN=COUT1=1uF VEN1= VIN VEN2=0V
HT72D2818 VOUT1=2.8V VIN=3.8V
CIN=COUT1=1uF VEN1= VIN VEN2=0V
Rev. 1.00
8
HT72D5015 VOUT1=5.0V VIN=6.0V
CIN=COUT1=1uF VEN1= VIN VEN2=0V
August 08, 2011
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HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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Input Transient Response
HT72Dxxxx
HT72D5015 VOUT2=1.5V CIN=0uF COUT2=1uF
VEN1=0V VEN2= VIN
HT72D2818 VOUT2=1.8V CIN=0uF COUT2=1uF
VEN1=0V VEN2= VIN
HT72D5015 VOUT2=1.5V CIN=0uF COUT2=1uF
VEN1=0V VEN2= VIN
HT72D2818 VOUT2=1.8V CIN=0uF COUT2=1uF
VEN1=0V VEN2= VIN
HT72D5015 VOUT2=1.5V CIN=0uF COUT2=1uF
VEN1=0V VEN2= VIN
Rev. 1.00
9
HT72D2818 VOUT2=1.8V CIN=0uF COUT2=1uF
VEN1=0V VEN2= VIN
August 08, 2011
Datasheet pdf - http://www.DataSheet4U.net/


HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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HT72Dxxxx
HT72D2818 VOUT1=2.8V CIN=0uF COUT2=1uF
VEN1= VIN VEN2=0V
HT72D5015 VOUT1=5.0V CIN=0uF COUT2=1uF
VEN1= VIN VEN2=0V
HT72D2818 VOUT1=2.8V CIN=0uF COUT2=1uF
VEN1= VIN VEN2=0V
HT72D5015 VOUT1=5.0V CIN=0uF COUT2=1uF
VEN1= VIN VEN2=0V
HT72D2818 VOUT1=2.8V CIN=0uF COUT2=1uF
VEN1= VIN VEN2=0V
HT72D5015 VOUT1=5.0V CIN=0uF COUT2=1uF
VEN1= VIN VEN2=0V
Rev. 1.00
10 August 08, 2011
Datasheet pdf - http://www.DataSheet4U.net/


HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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HT72Dxxxx
Package Information
Note that the package information provided here is for consultation purposes only. As this information may be
updated at regular intervals users are reminded to consult the Holtek website (http://www.holtek.com.tw/english/
literature/package.pdf) for the latest version of the package information.
6-pin SOT23-6 Outline Dimensions
D
C
L
EH
e
Symbol
A
A1
A2
b
C
D
E
e
H
L
θ
Symbol
A
A1
A2
b
C
D
E
e
H
L
θ
Rev. 1.00
A2
b
Min.
0.039
0.028
0.014
0.004
0.106
0.055
0.102
0.015
Min.
1.00
0.70
0.35
0.10
2.70
1.40
2.60
0.37
A
A1
Dimensions in inch
Nom.
0.075
Dimensions in mm
Nom.
1.90
11
Max.
0.051
0.004
0.035
0.020
0.010
0.122
0.071
0.118
Max.
1.30
0.10
0.90
0.50
0.25
3.10
1.80
3.00
August 08, 2011
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HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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Reel Dimensions
6
HT72Dxxxx
,
)*
+
6-pin SOT23-6
Symbol
A
B
C
D
T1
T2
6
Description
Reel Outer Diameter
Reel Inner Diameter
Spindle Hole Diameter
Key Slit Width
Space Between Flang
Reel Thickness
Dimensions in mm
178.0±1.0
62.0±1.0
13.0±0.2
2.50±0.25
8.4+1.5/-0.0
11.4+1.5/-0.0
Rev. 1.00
12
August 08, 2011
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HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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HT72Dxxxx
Carrier Tape Dimensions
D
E
F
P0
D1 P
P1 t
W C B0
K0
A0
6-pin SOT23-6
Symbol
W
P
E
F
D
D1
P0
P1
A0
B0
K0
t
C
R e e l H o le
IC M a r k in g
Description
Carrier Tape Width
Cavity Pitch
Perforation Position
Cavity to Perforation(Width Direction)
Perforation Diameter
Cavity Hole Diameter
Perforation Pitch
Cavity to Perforation(Length Direction)
Cavity Length
Cavity Width
Cavity Depth
Carrier Tape Thickness
Cover Tape Width
Dimensions in mm
8.0±0.3
4.0±0.1
1.75±0.10
3.50±0.05
1.5+0.1/-0.0
1.5+0.1/-0.0
4.0±0.1
2.00±0.05
3.15±0.10
3.2±0.1
1.4±0.1
0.20±0.03
5.3±0.1
Rev. 1.00
13
August 08, 2011
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HT72D1533 (Holtek Semiconductor)
High PSRR 300mA Dual LDO Regulator

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HT72Dxxxx
Holtek Semiconductor Inc. (Headquarters)
No.3, Creation Rd. II, Science Park, Hsinchu, Taiwan
Tel: 886-3-563-1999
Fax: 886-3-563-1189
http://www.holtek.com.tw
Holtek Semiconductor Inc. (Taipei Sales Office)
4F-2, No. 3-2, YuanQu St., Nankang Software Park, Taipei 115, Taiwan
Tel: 886-2-2655-7070
Fax: 886-2-2655-7373
Fax: 886-2-2655-7383 (International sales hotline)
Holtek Semiconductor Inc. (Shenzhen Sales Office)
5F, Unit A, Productivity Building, No.5 Gaoxin M 2nd Road, Nanshan District, Shenzhen, China 518057
Tel: 86-755-8616-9908, 86-755-8616-9308
Fax: 86-755-8616-9722
Holtek Semiconductor (USA), Inc. (North America Sales Office)
46729 Fremont Blvd., Fremont, CA 94538, USA
Tel: 1-510-252-9880
Fax: 1-510-252-9885
http://www.holtek.com
Copyright© 2011 by HOLTEK SEMICONDUCTOR INC.
The information appearing in this Data Sheet is believed to be accurate at the time of publication. However,
Holtek assumes no responsibility arising from the use of the specifications described. The applications
mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or
representation that such applications will be suitable without further modification, nor recommends the use
of its products for application that may present a risk to human life due to malfunction or otherwise. Holtek's
products are not authorized for use as critical components in life support devices or systems. Holtek reserves
the right to alter its products without prior notification. For the most up-to-date information, please visit our
web site at http://www.holtek.com.tw.
Rev. 1.00
14 August 08, 2011
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HT72D1533.pdf
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