HT7750S(SOT-23-5) [HOLTEK]
Switching Regulator/Controller;
| 型号： | HT7750S(SOT-23-5) |
| 厂家： | 
HOLTEK SEMICONDUCTOR INC |
| 描述： | Switching Regulator/Controller |
| 文件： | 总29页 (文件大小：1729K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
HT77xxS
100mA PFM Synchronous
Step-up DC/DC Converter
Features
General Description
•ꢀ Lowꢀstart-upꢀvoltage:ꢀ0.7Vꢀ(Typ.)
TheꢀHT77xxSꢀdevicesꢀareꢀaꢀhighꢀefficiencyꢀPFMꢀsyn-
chronousꢀstep-upꢀDC-DCꢀconverterꢀseriesꢀwhichꢀareꢀ
designedꢀtoꢀoperateꢀwithꢀbothꢀwireꢀwoundꢀchipꢀpowerꢀ
inductorsꢀandꢀalsoꢀwithꢀmulti-layeredꢀchipꢀpowerꢀ
inductors.ꢀTheꢀdeviceꢀseriesꢀhaveꢀtheꢀadvantagesꢀofꢀ
extremelyꢀlowꢀstart-upꢀvoltageꢀasꢀwellꢀasꢀhighꢀoutputꢀ
voltageꢀaccuracy.ꢀBeingꢀmanufacturedꢀusingꢀCMOSꢀ
technologyꢀensuresꢀultraꢀlowꢀsupplyꢀcurrent.ꢀBecauseꢀ
ofꢀtheirꢀhigherꢀoperatingꢀfrequency,ꢀupꢀtoꢀ500ꢀkHz,ꢀ
theꢀdevicesꢀhaveꢀtheꢀbenefitsꢀofꢀrequiringꢀsmallerꢀout-
lineꢀtypeꢀlowerꢀvalueꢀexternalꢀinductorsꢀandꢀcapaci-
tors.ꢀTheꢀhigherꢀoperatingꢀfrequencyꢀalsoꢀoffersꢀtheꢀ
advantagesꢀofꢀmuchꢀreducedꢀaudioꢀfrequencyꢀnoise.ꢀ
Theꢀdevicesꢀrequireꢀonlyꢀthreeꢀexternalꢀcomponentsꢀ
toꢀprovideꢀaꢀfixedꢀoutputꢀvoltageꢀofꢀ1.8V,ꢀ2.2V,ꢀ2.7V,ꢀ
3.0V,ꢀ3.3V,ꢀ3.7Vꢀorꢀ5.0V.
•ꢀ Highꢀefficiency:ꢀ1.8Vꢀ
V
ꢀ 2.2Vꢀupperꢀ80%,ꢀ
≤
OUT
≤
2.7Vꢀ
V ꢀ 5.0Vꢀupperꢀ85%ꢀ(Typ.)
≤
OUT
≤
•ꢀ Highꢀoutputꢀvoltageꢀaccuracy:ꢀ±2.5%
•ꢀ Outputꢀvoltage:ꢀ1.8V,ꢀ2.2V,ꢀ2.7V,ꢀ3.0V,ꢀ3.3V,ꢀ3.7V,ꢀ
5.0V
•ꢀ Outputꢀcurrentꢀupꢀtoꢀ100mA
•ꢀ UltraꢀlowꢀsupplyꢀcurrentꢀIDD:ꢀ4μAꢀ(Typ.)
•ꢀ Lowꢀrippleꢀandꢀlowꢀnoise
•ꢀ Lowꢀshutdownꢀcurrent:ꢀ0.1μAꢀ(Typ.)
•ꢀ TO92,ꢀSOT89,ꢀSOT23ꢀandꢀSOT23-5ꢀpackage
Applications
•ꢀ Palmtops/PDAs
TheꢀHT77xxSꢀdevicesꢀincludeꢀanꢀinternalꢀoscillator,ꢀ
PFMꢀcontrolꢀcircuit,ꢀdriverꢀtransistor,ꢀreferenceꢀvolt-
ageꢀunitꢀandꢀaꢀhighꢀspeedꢀcomparator.ꢀTheyꢀemployꢀ
pulseꢀfrequencyꢀmodulationꢀtechniques,ꢀtoꢀobtainꢀ
minimumꢀsupplyꢀcurrentꢀandꢀrippleꢀatꢀlightꢀoutputꢀ
loading.ꢀTheseꢀdevicesꢀareꢀavailableꢀinꢀspaceꢀsavingꢀ
TO92,ꢀSOT89,ꢀSOT23ꢀandꢀSOT23-5ꢀpackages.ꢀForꢀ
SOT23-5ꢀpackageꢀtypes,ꢀtheyꢀalsoꢀincludeꢀanꢀinternalꢀ
chipꢀenableꢀfunctionꢀtoꢀreduceꢀpowerꢀconsumptionꢀ
whenꢀinꢀtheꢀshutdownꢀmode.
•ꢀ Portableꢀcommunicators/Smartphones
•ꢀ Cameras/Camcorders
•ꢀ Battery-poweredꢀequipment
Selection Table
Part No.
HT7718S
HT7722S
HT7727S
HT7730S
HT7733S
HT7737S
HT7750S
Output Voltage
1.8V
Tolerance
Package
2.2V
TO92
SOT89
SOT23
SOT23-5
2.7V
3.0V
±2.5%
3.3V
3.7V
5.0V
Rev. 1.00
1
February 22, 2012
HT77xxS
Block Diagram
V
U
O
T
V
e
r
f
V
U
O
T
P
M
F
C
n
o
r
t
l
o
B
f
u
e
f
r
L
X
O
C
S
C
i
h
p
E
n
a
e
b
l
G
D
N
C
E
Pin Assignment
S
T
O
9
8
S
T
O
3
2
S
T
O
3
2
5
-
T
9
O
2
V
U
O
T
L
X
G
D
N
3
5
4
F
o
r
t
n
V
e
i
w
1
2
3
T
o
p
V
e
i
w
T
p
o
V
e
i
w
1
2
3
1
2
3
1
2
C
E
V
U
O
T
N
C
G
D
N
O
V
T
U
L
X
G
D
N
L
X
G
D
N
V
U
O
T
L
X
B
t
o
o
t
m
V
i
w
e
C
E
V
U
O
T
N
C
G
D
N
L
X
G
D
N
V
U
O
T
L
X
Pin Description
Pin No.
Pin Name
Description
Chip enable pin, high active
TO92
SOT89
SOT23
SOT23-5
—
2
—
2
—
3
1
2
3
4
5
CE
VOUT
NC
DC/DC converter output monitoring pin
No connection
—
1
—
1
—
1
GND
LX
Ground pin
3
3
2
Switching pin
Rev. 1.00
2
February 22, 2012
HT77xxS
Absolute Maximum Ratings
MaximumꢀInputꢀSupplyꢀVoltageꢀ.......................... 6.5V
AmbientꢀTemperatureꢀRangeꢀꢀ............... -40°Cꢀtoꢀ85°C
StorageꢀTemperatureꢀꢀ.......................... -50°Cꢀtoꢀ125°C
Note:ꢀTheseꢀareꢀstressꢀratingsꢀonly.ꢀStressesꢀexceedingꢀtheꢀrangeꢀspecifiedꢀunderꢀ"AbsoluteꢀMaximumꢀRatings"ꢀ
mayꢀcauseꢀsubstantialꢀdamageꢀtoꢀtheꢀdevice.ꢀFunctionalꢀoperationꢀofꢀthisꢀdeviceꢀatꢀotherꢀconditionsꢀbeyondꢀ
thoseꢀlistedꢀinꢀtheꢀspecificationꢀisꢀnotꢀimpliedꢀandꢀprolongedꢀexposureꢀtoꢀextremeꢀconditionsꢀmayꢀaffectꢀ
deviceꢀreliability.
Electrical Characteristics
Ta= 25°C; VIN= VOUT×0.6; IOUT= 10mA; unless otherwise specified
Symbol
VIN
Parameter
Input Voltage
Test Conditions
Min.
—
Typ.
—
Max.
6.0
Unit
V
—
ΔVOUT
VSTART
VHOLD
Output Voltage Tolerance
Starting Voltage
-2.5
—
—
+2.5
0.9
%
V
VIN: 0 to 2V, IOUT= 1mA
VIN: 2 to 0V, IOUT= 1mA
0.7
0.7
Voltage Hold
—
—
V
VS= VOUT+0.5V, Measured at VOUT
Pin
IDD
Supply Current
—
4
7
μA
ISHDN
VIH
Shutdown Current
CE High Threshold
CE Low Threshold
CE= GND
—
1.5
—
0.1
—
1.0
—
μA
V
—
VIL
—
0.4
V
VS= 5.5V, VX= 4V
Measurement at the LX pin
ILEAK
LX Leakage Current
—
0.05
1
μA
FOSC
DOSC
Oscillator Frequency
Oscillator Duty Cycle
—
70
—
—
500
80
—
—
—
—
kHz
%
VS= VOUT×0.95
Measurement at the LX pin
1.8V≤ VOUT≤ 2.2V
2.7V≤ VOUT≤ 5.0V
80
%
η
Efficiency
85
%
Note:ꢀAbsoluteꢀmaximumꢀratingsꢀindicateꢀlimitsꢀbeyondꢀwhichꢀdamageꢀtoꢀtheꢀdeviceꢀmayꢀoccur.ꢀOperatingꢀ
Ratingsꢀindicateꢀconditionsꢀforꢀwhichꢀtheꢀdeviceꢀisꢀintendedꢀtoꢀbeꢀfunctional,ꢀbutꢀdoꢀnotꢀguaranteeꢀspecificꢀ
performanceꢀlimits.ꢀTheꢀguaranteedꢀspecificationsꢀapplyꢀonlyꢀforꢀtheꢀtestꢀconditionsꢀlisted.
Rev. 1.00
3
February 22, 2012
HT77xxS
Application Circuits
Without CE Pin
L
VIN
VOUT
LX
VOUT
10μH
HT77xxS
CIN
10μF
COUT
10μF
GND
With CE Pin
L
VIN
VOUT
LX
VOUT
10μH
HT77xxS
CE
CIN
10μF
COUT
10μF
VOUT
GND
L
VIN
VOUT
LX
VOUT
10μH
HT77xxS
CE
COUT
10μF
CIN
10μF
GND
List of Components
Component
Reference
Part Number
GJ831CR61E106KE83L
SR0302100MLB
Manufacturer
Value
CIN, COUT
Murata
10μF, 25V. X5R Ceramic
10μH, RDC= 0.25Ω.
Wire Wound Chip Power Inductor
L
L
ABC Taiwan Electronics Corp.
TAIYO YUDEN
10μH, RDC= 0.133Ω.
Multi-layered Chip Power Inductor
LBC3225T100MR
Rev. 1.00
4
February 22, 2012
HT77xxS
Functional Description
Application Information
TheꢀHT77xxSꢀisꢀaꢀconstantꢀonꢀtimeꢀsynchronousꢀstep-up
ꢀ
Inductor Selection
converter,ꢀwhichꢀusesꢀaꢀpulseꢀfrequencyꢀmodulationꢀ
(PFM)ꢀcontrollerꢀscheme.ꢀTheꢀPFMꢀcontrolꢀschemeꢀisꢀ
inherentlyꢀstable.ꢀTheꢀrequiredꢀinput/outputꢀcapacitorꢀ
andꢀinductorꢀselectionsꢀwillꢀnotꢀcreateꢀsituationsꢀofꢀ
instability.
Selectingꢀaꢀsuitableꢀinductorꢀisꢀanꢀimportantꢀconsider-
ationꢀasꢀitꢀisꢀusuallyꢀaꢀcompromiseꢀsituationꢀbetweenꢀ
theꢀoutputꢀcurrentꢀrequirements,ꢀtheꢀinductorꢀsaturation
limitꢀandꢀtheꢀacceptableꢀoutputꢀvoltageꢀripple.ꢀLowerꢀ
valuesꢀofꢀinductorꢀvaluesꢀcanꢀprovideꢀhigherꢀoutputꢀ
currentsꢀbutꢀwillꢀsufferꢀfromꢀhigherꢀrippleꢀvoltagesꢀ
andꢀreducedꢀefficiencies.ꢀHigherꢀinductorꢀvaluesꢀcanꢀ
provideꢀreducedꢀoutputꢀrippleꢀvoltagesꢀandꢀbetterꢀ
efficiencies,ꢀbutꢀwillꢀbeꢀlimitedꢀinꢀtheirꢀoutputꢀcurrentꢀ
ꢀ
Theꢀdeviceꢀincludesꢀaꢀfullyꢀintegratedꢀsynchronousꢀ
rectifierꢀwhichꢀreducesꢀcostsꢀ(includesꢀreduceꢀLꢀandꢀCꢀ
sizes,ꢀeliminatesꢀSchottkyꢀdiodeꢀcostꢀetc.)ꢀandꢀboardꢀ
area.ꢀAꢀtrueꢀloadꢀdisconnectꢀfunctionꢀensuresꢀthatꢀtheꢀ
deviceꢀisꢀcompletelyꢀshutdown.
capabilities.ꢀForꢀallꢀinductorsꢀitꢀmustꢀbeꢀnotedꢀhowever
ꢀ
thatꢀlowerꢀcoreꢀlossesꢀandꢀlowerꢀDCꢀresistanceꢀvaluesꢀ
willꢀalwaysꢀprovideꢀhigherꢀefficiencies.
Low Voltage Start-up
Theꢀdevicesꢀhaveꢀaꢀveryꢀlowꢀstartꢀupꢀvoltageꢀdownꢀtoꢀ
0.7V.ꢀWhenꢀpowerꢀisꢀfirstꢀapplied,ꢀtheꢀsynchronousꢀ
switchꢀwillꢀbeꢀinitiallyꢀoffꢀbutꢀenergyꢀwillꢀbeꢀtrans-
ferredꢀtoꢀtheꢀloadꢀthroughꢀitsꢀintrinsicꢀbodyꢀdiode.
Theꢀpeakꢀinductorꢀcurrentꢀcanꢀbeꢀcalculatedꢀusingꢀtheꢀ
followingꢀequation:
VOUT ×IO
V
×(VOUT −V )
IN
IN
IL(PEAK)
=
+
V
×η
2 ×VOUT ×L
IN
Shutdown
Where
Duringꢀnormalꢀdeviceꢀoperation,ꢀtheꢀENꢀpinꢀshouldꢀbeꢀ
eitherꢀhighꢀorꢀconnectedꢀtoꢀtheꢀVOUTꢀpinꢀorꢀtheꢀVINꢀ
powerꢀsource.ꢀWhenꢀtheꢀdeviceꢀisꢀinꢀtheꢀshutdownꢀ
mode,ꢀthatꢀisꢀwhenꢀtheꢀENꢀpinꢀisꢀpulledꢀlow,ꢀtheꢀinter-
nalꢀcircuitryꢀwillꢀbeꢀswitchedꢀoff.ꢀDuringꢀshutdown,ꢀ
theꢀPMOSꢀpowerꢀtransistorꢀwillꢀbeꢀswitchedꢀoffꢀthusꢀ
placingꢀtheꢀoutputꢀintoꢀaꢀfloatingꢀcondition.
VINꢀ=ꢀInputꢀVoltageꢀ
VOUTꢀ=ꢀOutputꢀVoltageꢀ
IOꢀ=ꢀOutputꢀCurrentꢀ
ηꢀ=ꢀEfficiencyꢀ
Lꢀ=ꢀInductor
Capacitor Selection
Synchronous Rectification
Asꢀtheꢀoutputꢀcapacitorꢀselectedꢀaffectsꢀbothꢀefficien-
cyꢀandꢀoutputꢀrippleꢀvoltage,ꢀitꢀmustꢀbeꢀchosenꢀwithꢀ
careꢀtoꢀachieveꢀbestꢀresultsꢀfromꢀtheꢀconverter.ꢀOutputꢀ
voltageꢀrippleꢀisꢀtheꢀproductꢀofꢀtheꢀpeakꢀinductorꢀcurrentꢀ
andꢀtheꢀoutputꢀcapacitorꢀequivalentꢀseriesꢀresistanceꢀ
orꢀESRꢀforꢀshort.ꢀItꢀisꢀimportantꢀthatꢀlowꢀESRꢀvalueꢀ
capacitorsꢀareꢀusedꢀtoꢀachieveꢀoptimumꢀperformance.ꢀ
OneꢀmethodꢀtoꢀachieveꢀlowꢀESRꢀvaluesꢀisꢀtoꢀconnectꢀ
twoꢀorꢀmoreꢀfilterꢀcapacitorsꢀinꢀparallel.ꢀTheꢀcapacitorsꢀ
valuesꢀandꢀratedꢀvoltagesꢀareꢀonlyꢀsuggestedꢀvalues.
AꢀdeadꢀtimeꢀexistsꢀbetweenꢀtheꢀNꢀchannelꢀandꢀPꢀchan-
nelꢀMOSFETꢀswitchingꢀoperations.ꢀInꢀsynchronousꢀ
rectification,ꢀtheꢀPꢀchannelꢀisꢀreplacedꢀbyꢀaꢀSchottkyꢀ
diode.ꢀHereꢀtheꢀPꢀchannelꢀswitchꢀmustꢀbeꢀcompletelyꢀ
offꢀbeforeꢀtheꢀNꢀchannelꢀswitchꢀisꢀswitchedꢀon.ꢀAfterꢀ
eachꢀcycle,ꢀaꢀ30nsꢀdelayꢀtimeꢀisꢀinsertedꢀtoꢀensureꢀtheꢀ
NꢀchannelꢀswitchꢀisꢀcompletelyꢀoffꢀbeforeꢀtheꢀPꢀchannel
ꢀ
switchꢀisꢀswitchedꢀonꢀtoꢀmaintainꢀaꢀhighꢀefficiencyꢀ
overꢀaꢀwideꢀinputꢀvoltageꢀandꢀoutputꢀpowerꢀrange.
Rev. 1.00
5
February 22, 2012
HT77xxS
Layout Considerations
Circuitꢀboardꢀlayoutꢀisꢀaꢀveryꢀimportantꢀconsiderationꢀforꢀswitchingꢀregulatorsꢀifꢀtheyꢀareꢀtoꢀfunctionꢀproperly.ꢀ
Poorꢀcircuitꢀlayoutꢀmayꢀresultꢀinꢀrelatedꢀnoiseꢀproblems.ꢀInꢀorderꢀtoꢀminimiseꢀEMIꢀandꢀswitchingꢀnoise,ꢀnoteꢀtheꢀ
followingꢀguidelines:
•ꢀ Allꢀtracksꢀshouldꢀbeꢀasꢀwideꢀasꢀpossible.
•ꢀ TheꢀinputꢀandꢀoutputꢀcapacitorsꢀshouldꢀbeꢀplacedꢀasꢀcloseꢀasꢀpossibleꢀtoꢀtheꢀVIN,ꢀVOUTꢀandꢀGNDꢀpins.
•ꢀ AꢀfullꢀgroundꢀplaneꢀisꢀalwaysꢀhelpfulꢀforꢀbetterꢀEMIꢀperformance.
Top Layer
Bottom Layer
Bottom Layer
Top Layer
Top Layer
Top Layer
Bottom Layer
Bottom Layer
Rev. 1.00
6
February 22, 2012
HT77xxS
Typical Performance Characteristics
(L use wire wound chip power inductor)
HT7750S
6
100%
80%
60%
40%
20%
0%
5.2
4.4
3.6
VIN=3.0V
VIN=3.0V
VIN=2.0V
VIN=1.5V
VIN=1.2V
VIN=2.0V
VIN=1.5V
2.8
VIN=1.2V
2
0
50
100
150
200
250
300
0
50
100
150
200
250
300
Output Current (mA)
Output Current (mA)
Fig 1. HT7750S Output Voltage vs. Output Current
Fig 2. HT7750S Efficiency vs. Output Current
1.2
250
200
0.9
Start-up
150
Hold-on
VIN=3.0V
0.6
VIN=2.0V
100
50
0
VIN=1.5V
VIN=1.2V
0.3
0
0
50
100
150
200
250
300
0
5
10
15
20
Output Current (mA)
Output Current (mA)
Fig 3. HT7750S Start-up & Hold-on Voltage
Fig 4. HT7750S Ripple Voltage vs. Output Current
Fig 6. HT7750S Line Transient Response
Fig 5. HT7750S Load Transient Response
(L= 10μH, CIN= COUT= 10μF, VIN= 3.0V)
(L= 10μH, CIN= COUT= 10μF, VIN= 3.0V)
Rev. 1.00
7
February 22, 2012
HT77xxS
2
1.1
82
81
80
79
78
77
76
HT7750S NO.1
HT7750S NO.2
0.2
-0.7
-1.6
-2.5
HT7750S NO.1
HT7750S NO.2
-40
-15
10
35
60
85
-40
-15
10
35
60
85
Temperature (℃)
Temperature (℃)
Fig 7. HT7750S Output Voltage Tolerance vs.
Temperature
Fig 8. HT7750S Oscillator Duty Cycle vs.
Temperature
750
675
600
525
450
375
300
HT7750S NO.1
HT7750S NO.2
-40
-15
10
35
60
85
Temperature (℃)
Fig 10. HT7750S LX Leakage Current vs.
Temperature
Fig 9. HT7750S Oscillator Frequency vs.
Temperature
Rev. 1.00
8
February 22, 2012
HT77xxS
HT7737S
4
3.7
3.4
3.1
2.8
100%
80%
60%
40%
20%
0%
VIN=2.0V
VIN=1.8V
VIN=1.5V
VIN=1.2V
VIN=2.0V
VIN=1.8V
VIN=1.5V
VIN=1.2V
2.5
0
0
50
100
150
200
50
100
150
200
Output Current (mA)
Output Current (mA)
Fig 12. HT7737S Efficiency vs. Output Current
Fig 11. HT7737S Output Voltage vs. Output Current
1.2
200
150
0.9
Start-up
Hold-on
100
0.6
VIN=2.0V
50
0
VIN=1.8V
VIN=1.5V
VIN=1.2V
0.3
0
0
50
100
150
200
0
5
10
15
20
Output Current (mA)
Output Current (mA)
Fig 13. HT7737S Start-up & Hold-on Voltage
Fig 14. HT7737S Ripple Voltage vs. Output Current
Fig 15. HT7737S Load Transient Response
Fig 16. HT7737S Line Transient Response
(L= 10μH, CIN= COUT= 10μF, VIN= 2.22V)
(L= 10μH, CIN= COUT= 10μF, VIN= 2.22V)
Rev. 1.00
9
February 22, 2012
HT77xxS
HT7733S
100%
80%
60%
40%
20%
0%
3.5
3.3
3.1
2.9
VIN=2.0V
VIN=1.8V
VIN=1.5V
VIN=1.2V
VIN=2.0V
VIN=1.8V
VIN=1.5V
VIN=1.2V
2.7
0
50
100
150
200
0
50
100
150
200
Output Current (mA)
Output Current (mA)
Fig 17. HT7733S Output Voltage vs. Output Current
Fig 18. HT7733S Efficiency vs. Output Current
1.2
600
500
400
300
0.9
Start-up
Hold-on
0.6
200
VIN=2.0V
0.3
0
VIN=1.8V
100
VIN=1.5V
VIN=1.2V
0
0
50
100
150
200
0
5
10
15
20
Output Current (mA)
Output Current (mA)
Fig 19. HT7733S Start-up & Hold-on Voltage
Fig 20. HT7733S Ripple Voltage vs. Output Current
Fig 21. HT7733S Load Transient Response
Fig 22. HT7733S Line Transient Response
(L=10μH, CIN=COUT=10μF, VIN=1.98V)
(L=10μH, CIN=COUT=10μF, VIN=1.98V)
Rev. 1.00
10
February 22, 2012
HT77xxS
HT7730S
100%
80%
60%
40%
20%
0%
3.3
3.1
2.9
2.7
VIN=2.0V
VIN=1.8V
VIN=1.5V
VIN=1.2V
VIN=2.0V
VIN=1.8V
VIN=1.5V
VIN=1.2V
2.5
0
0
50
100
150
200
250
50
100
150
200
250
Output Current (mA)
Output Current (mA)
Fig 23. HT7730S Output Voltage vs. Output Current
Fig 24. HT7730S Efficiency vs. Output Current
1.2
600
500
400
300
0.9
Start-up
Hold-on
0.6
200
VIN=2.0V
0.3
0
VIN=1.8V
100
VIN=1.5V
VIN=1.2V
0
0
50
100
150
200
250
0
5
10
15
20
Output Current (mA)
Output Current (mA)
Fig 25. HT7730S Start-up & Hold-on Voltage
Fig 26. HT7730S Ripple Voltage vs. Output Current
Fig 27. HT7730S Load Transient Response
Fig 28. HT7730S Line Transient Response
(L=10μH, CIN=COUT=10μF, VIN=1.8V)
(L=10μH, CIN=COUT=10μF, VIN=1.8V)
Rev. 1.00
11
February 22, 2012
HT77xxS
HT7727S
100%
80%
60%
40%
20%
0%
3
2.8
2.6
2.4
2.2
VIN=2.0V
VIN=1.8V
VIN=1.6V
VIN=1.2V
VIN=2.0V
VIN=1.8V
VIN=1.6V
VIN=1.2V
2
0
0
50
100
150
200
50
100
150
200
Output Current (mA)
Output Current (mA)
Fig 29. HT7727S Output Voltage vs. Output Current
Fig 30. HT7727S Efficiency vs. Output Current
1.2
200
150
0.9
Start-up
Hold-on
0.6
100
VIN=2.0V
VIN=1.8V
0.3
0
50
VIN=1.6V
VIN=1.2V
0
0
5
10
15
20
0
50
100
150
200
Output Current (mA)
Output Current (mA)
Fig 31. HT7727S Start-up & Hold-on Voltage
Fig 32. HT7727S Ripple Voltage vs. Output Current
Fig 33. HT7727S Load Transient Response
Fig 34. HT7727SLine Transient Response
(L= 10μH, CIN= COUT= 10μF, VIN= 1.62V)
(L= 10μH, CIN= COUT= 10μF, VIN= 1.62V)
Rev. 1.00
12
February 22, 2012
HT77xxS
2
1.1
82
81
80
79
78
77
76
HT7727S NO.1
HT7727S NO.2
HT7727S NO.1
HT7727S NO.2
0.2
-0.7
-1.6
-2.5
-40
-15
10
35
60
85
-40
-15
10
35
60
85
Temperature (℃)
Temperature (℃)
Fig 35. HT7727S Output Voltage Tolerance vs.
Temperature
Fig 36. HT7727S Oscillator Duty Cycle vs.
Temperature
750
675
HT7727S NO.1
HT7727S NO.2
600
525
450
375
300
-40
-15
10
35
60
85
Temperature (℃)
Fig 37. HT7727S Oscillator Frequency vs.
Temperature
Fig 38. HT7727S LX Leakage Current vs.
Temperature
Rev. 1.00
13
February 22, 2012
HT77xxS
HT7722S
100%
80%
60%
40%
20%
0%
2.4
2.32
2.24
2.16
2.08
VIN=2.0V
VIN=1.8V
VIN=1.5V
VIN=1.2V
VIN=2.0V
VIN=1.8V
VIN=1.5V
VIN=1.2V
2
0
0
50
100
150
200
50
100
150
200
Output Current (mA)
Output Current (mA)
Fig 39. HT7722S Output Voltage vs. Output Current
Fig 40. HT7722S Efficiency vs. Output Current
1.2
600
500
400
300
0.9
Start-up
Hold-on
0.6
VIN=2.0V
200
VIN=1.8V
0.3
0
VIN=1.5V
VIN=1.2V
100
0
0
50
100
150
200
0
5
10
15
20
Output Current (mA)
Output Current (mA)
Fig 41. HT7722S Start-up & Hold-on Voltage
Fig 42.HT7722S Ripple Voltage vs. Output Current
Fig 43. HT7722S Load Transient Response
Fig 44. HT7722SLine Transient Response
(L= 10μH, CIN= COUT= 10μF, VIN= 1.32V)
(L= 10μH, CIN= COUT= 10μF, VIN= 1.32V)
Rev. 1.00
14
February 22, 2012
HT77xxS
HT7718S
1.9
1.85
1.8
100%
80%
60%
40%
20%
0%
1.75
1.7
VIN=1.6V
VIN=1.4V
VIN=1.2V
VIN=1.08V
VIN=1.6V
VIN=1.4V
VIN=1.2V
VIN=1.08V
1.65
0
30
60
90
120
150
0
30
60
90
120
150
Output Current (mA)
Output Current (mA)
Fig 45. HT7718S Output Voltage vs. Output Current
Fig 46. HT7718S Efficiency vs. Output Current
1.2
200
150
0.9
Start-up
Hold-on
0.6
100
VIN=1.6V
0.3
0
VIN=1.4V
VIN=1.2V
VIN=1.08V
50
0
0
5
10
15
20
0
30
60
90
120
150
Output Current (mA)
Output Current (mA)
Fig 47. HT7718S Start-up & Hold-on Voltage
Fig 48.HT7718S Ripple Voltage vs. Output Current
Fig 49. HT7718S Load Transient Response
Fig 50. HT7718S Line Transient Response
(L= 10μH, CIN= COUT= 10μF, VIN= 1.08V)
(L= 10μH, CIN= COUT= 10μF, VIN= 1.08V)
Rev. 1.00
15
February 22, 2012
HT77xxS
2
1.1
82
81
80
79
78
77
76
HT7718S NO.1
HT7718S NO.2
0.2
-0.7
-1.6
-2.5
HT7718S NO.1
HT7718S NO.2
-40
-15
10
35
60
85
-40
-15
10
35
60
85
Temperature (℃)
Temperature (℃)
Fig 52. HT7718S Oscillator Duty Cycle vs.
Temperature
Fig 51. HT7718S Output Voltage Tolerance vs.
Temperature
750
675
HT7718S NO.1
HT7718S NO.2
600
525
450
375
300
-40
-15
10
35
60
85
Temperature (℃)
Fig 53. HT7718S Oscillator Frequency vs.
Temperature
Fig 54. HT7718S LX Leakage Current vs.
Temperature
Rev. 1.00
16
February 22, 2012
HT77xxS
Typical Performance Characteristics
(L use multi-layered chip power inductor)
HT7750S
6
100%
80%
60%
40%
20%
0%
5.2
4.4
3.6
2.8
2
VIN=3.0V
VIN=2.0V
VIN=1.5V
VIN=1.2V
VIN=3.0V
VIN=2.0V
VIN=1.5V
VIN=1.2V
0
50
100
150
200
250
300
0
50
100
150
200
250
300
Output Current (mA)
Output Current (mA)
Fig 55. HT7750S Output Voltage vs. Output Current
Fig 56. HT7750S Efficiency vs. Output Current
HT7737S
100%
80%
60%
4
3.7
3.4
40%
3.1
VIN=2.0V
VIN=1.8V
VIN=2.0V
VIN=1.8V
2.8
20%
VIN=1.5V
VIN=1.5V
VIN=1.2V
VIN=1.2V
2.5
0%
0
50
100
150
200
0
50
100
150
200
Output Current (mA)
Output Current (mA)
Fig 58. HT7737S Efficiency vs. Output Current
Fig 57. HT7737S Output Voltage vs. Output Current
HT7733S
100%
80%
60%
3.5
3.3
3.1
40%
VIN=2.0V
VIN=2.0V
VIN=1.8V
2.9
VIN=1.8V
20%
VIN=1.5V
VIN=1.5V
VIN=1.2V
VIN=1.2V
0%
2.7
0
50
100
150
200
0
50
100
150
200
Output Current (mA)
Output Current (mA)
Fig 60. HT7733S Efficiency vs. Output Current
Fig 59. HT7733S Output Voltage vs. Output Current
Rev. 1.00
17
February 22, 2012
HT77xxS
HT7730S
100%
80%
60%
40%
20%
0%
3.3
3.1
2.9
2.7
VIN=2.0V
VIN=1.8V
VIN=1.5V
VIN=1.2V
VIN=2.0V
VIN=1.8V
VIN=1.5V
VIN=1.2V
2.5
0
50
100
150
200
250
0
50
100
150
200
250
Output Current (mA)
Output Current (mA)
Fig 62. HT7730S Efficiency vs. Output Current
Fig 61. HT7730S Output Voltage vs. Output Current
HT7727S
100%
80%
60%
3
2.8
2.6
2.4
40%
VIN=2.0V
VIN=2.0V
VIN=1.8V
VIN=1.8V
20%
2.2
VIN=1.6V
VIN=1.6V
VIN=1.2V
VIN=1.2V
2
0%
0
50
100
150
200
0
50
100
150
200
Output Current (mA)
Output Current (mA)
Fig 63. HT7727S Output Voltage vs. Output Current
Fig 64. HT7727S Efficiency vs. Output Current
HT7722S
100%
80%
60%
2.4
2.32
2.24
2.16
40%
VIN=2.0V
VIN=1.8V
VIN=2.0V
VIN=1.8V
2.08
20%
VIN=1.5V
VIN=1.5V
VIN=1.2V
VIN=1.2V
2
0%
0
50
100
150
200
0
50
100
150
200
Output Current (mA)
Output Current (mA)
Fig 65. HT7722S Output Voltage vs. Output Current
Fig 66. HT7722S Efficiency vs. Output Current
Rev. 1.00
18
February 22, 2012
HT77xxS
HT7718S
100%
80%
60%
40%
20%
0%
1.9
1.85
1.8
1.75
1.7
VIN=1.6V
VIN=1.4V
VIN=1.2V
VIN=1.08V
VIN=1.6V
VIN=1.4V
VIN=1.2V
VIN=1.08V
1.65
0
30
60
90
120
150
0
30
60
90
120
150
Output Current (mA)
Output Current (mA)
Fig 68. HT7718S Efficiency vs. Output Current
Fig 67. HT7718S Output Voltage vs. Output Current
Rev. 1.00
19
February 22, 2012
HT77xxS
Package Information
Noteꢀthatꢀtheꢀpackageꢀinformationꢀprovidedꢀhereꢀisꢀforꢀconsultationꢀpurposesꢀonly.ꢀAsꢀthisꢀinformationꢀmayꢀbeꢀ
updatedꢀatꢀregularꢀintervalsꢀusersꢀareꢀremindedꢀtoꢀconsultꢀtheꢀHoltekꢀwebsiteꢀ(http://www.holtek.com.tw/english/
literature/package.pdf)ꢀforꢀtheꢀlatestꢀversionꢀofꢀtheꢀpackageꢀinformation.
3-pin SOT23 Outline Dimensions
D
C
L
H
E
G
e
A
A
2
b
A
1
Dimensions in inch
Symbol
Min.
0.039
―
Nom.
―
Max.
0.051
0.004
0.035
0.020
0.010
0.122
0.071
―
A
A1
A2
b
―
0.028
0.014
0.004
0.106
0.055
―
―
―
C
D
E
―
―
―
e
0.075
―
H
L
0.102
0.015
0°
0.118
―
―
θ
―
9°
Dimensions in mm
Symbol
Min.
1.00
―
Nom.
―
Max.
1.30
0.10
0.90
0.50
0.25
3.10
1.80
―
A
A1
A2
b
―
0.70
0.35
0.10
2.70
1.40
―
―
―
C
D
E
―
―
―
e
1.90
―
H
L
2.60
0.37
0°
3.00
―
―
θ
―
9°
Rev. 1.00
20
February 22, 2012
HT77xxS
5-pin SOT23-5 Outline Dimensions
D
C
L
E
H
G
e
A
A
2
b
A
1
Dimensions in inch
Symbol
Min.
0.039
―
Nom.
―
Max.
A
A1
A2
b
0.051
0.004
0.035
0.020
0.010
0.122
0.071
―
―
0.028
0.014
0.004
0.106
0.055
―
―
―
C
D
E
―
―
―
e
0.075
―
H
L
0.102
0.015
0°
0.118
―
―
θ
―
9°
Dimensions in mm
Symbol
Min.
1.00
―
Nom.
―
Max.
1.30
0.10
0.90
0.50
0.25
3.10
1.80
―
A
A1
A2
b
―
0.70
0.35
0.10
2.70
1.40
―
―
―
C
D
E
―
―
―
e
1.90
―
H
L
2.60
0.37
0°
3.00
―
―
θ
―
9°
Rev. 1.00
21
February 22, 2012
HT77xxS
3-pin SOT89 Outline Dimensions
I
A
B
J
C
E
D
G
F
H
Dimensions in inch
Symbol
Min.
Nom.
―
Max.
A
B
C
D
E
F
G
H
I
0.173
0.059
0.090
0.035
0.155
0.014
0.017
―
0.181
0.072
0.102
0.047
0.167
0.019
0.022
―
―
―
―
―
―
―
0.059
―
55
63
J
14
―
17
Dimensions in mm
Symbol
Min.
4.39
1.50
2.29
0.89
3.94
0.36
0.43
―
Nom.
―
Max.
4.60
1.83
2.59
1.19
4.24
0.48
0.56
―
A
B
C
D
E
F
G
H
I
―
―
―
―
―
―
1.50
―
1.40
0.36
1.60
0.43
J
―
Rev. 1.00
22
February 22, 2012
HT77xxS
3-pin TO92 Outline Dimensions
)
*
,
+
-
.
/
0
Dimensions in inch
Symbol
Min.
Nom.
―
Max.
A
B
C
D
E
F
0.170
0.200
0.200
―
0.170
0.500
0.011
0.090
0.045
0.045
0.130
0°
―
―
―
0.020
0.110
0.055
0.065
0.160
10°
―
―
G
H
α
―
―
―
Dimensions in mm
Symbol
Min.
4.32
4.32
12.70
0.28
2.29
1.14
1.14
3.30
0°
Nom.
―
Max.
5.08
5.08
―
A
B
C
D
E
F
―
―
―
0.51
2.79
1.40
1.65
4.06
10°
―
―
G
H
α
―
―
―
Rev. 1.00
23
February 22, 2012
HT77xxS
Product Tape and Reel Specifications
Reel Dimensions
,
6
+
)
*
6
ꢀ
SOT23-3, SOT23-5
Symbol
Description
Dimensions in mm
178.0±1.0
62.0±1.0
A
B
Reel Outer Diameter
Reel Inner Diameter
Spindle Hole Diameter
Key Slit Width
C
13.0±0.2
D
2.50±0.25
8.4 +1.5/-0.0
T1
T2
Space Between Flange
Reel Thickness
11.4 +1.5/-0.0
SOT89-3
Symbol
Description
Dimensions in mm
178.0±1.0
62.0±1.0
A
B
Reel Outer Diameter
Reel Inner Diameter
Spindle Hole Diameter
Key Slit Width
C
13.0±0.2
D
2.50±0.25
8.4 +1.5/-0.0
T1
T2
Space Between Flange
Reel Thickness
11.4 +1.5/-0.0
Rev. 1.00
24
February 22, 2012
HT77xxS
TO92 Reel Dimensions (Unit: mm)
P
c
a
k
a
U
g
,
p
e
F
a
t
l
i
S
e
d
U
p
3
0
P
c
a
k
a
U
g
,
p
e
l
t
a
F
i
S
e
d
D
w
o
n
5
8
4
3
8
8
3
6
0
Rev. 1.00
25
February 22, 2012
HT77xxS
Carrier Tape Dimensions
P
0
P
1
t
D
E
F
W
B
0
C
D
1
P
K
0
A
0
R
e
e
H
o
l
e
l
I
C
p
a
c
k
a
p
n
g
i
1
e
a
n
t
h
d
e
r
e
e
h
l
e
o
l
a
e
r
l
c
o
t
a
d
e
o
n
t
e
h
s
m
a
e
i
s
d
e
.
SOT23-3, SOT23-5
Symbol
Description
Dimensions in mm
8.0±0.3
W
P
Carrier Tape Width
Cavity Pitch
4.0±0.1
E
Perforation Position
1.75±0.10
3.50±0.05
1.5 +0.1/-0.00
1.5 +0.1/-0.00
4.0±0.1
F
Cavity to Perforation (Width Direction)
Perforation Diameter
Cavity Hole Diameter
Perforation Pitch
D
D1
P0
P1
A0
B0
K0
t
Cavity to Perforation (Length Direction)
Cavity Length
2.00±0.05
3.15±0.10
3.2±0.1
Cavity Width
Cavity Depth
1.4±0.1
Carrier Tape Thickness
Cover Tape Width
0.20±0.03
5.3±0.1
C
Rev. 1.00
26
February 22, 2012
HT77xxS
SOT89-3
Symbol
Description
Carrier Tape Width
Dimensions in mm
12.0+0.3/-0.1
8.0±0.1
W
P
Cavity Pitch
E
Perforation Position
Cavity to Perforation (Width Direction)
Perforation Diameter
Cavity Hole Diameter
Perforation Pitch
1.75±0.10
5.50±0.05
1.5 +0.1/-0.00
1.5 +0.1/-0.00
4.0±0.1
F
D
D1
P0
P1
A0
B0
K0
t
Cavity to Perforation (Length Direction)
Cavity Length
2.0±0.1
4.8±0.1
Cavity Width
4.5±0.1
Cavity Depth
1.8±0.1
Carrier Tape Thickness
Cover Tape Width
0.300±0.013
9.3±0.1
C
Rev. 1.00
27
February 22, 2012
HT77xxS
Carrier Tape Dimensions
P
,
h
W
2
H
1
H
H
0
t
l
1
W
0
W
1
W
F
1
F
2
D
0
P
2
P
0
TO92
Symbol
I1
Description
Dimensions in mm
(2.5)
Taped Lead Length
Component Pitch
Perforation Pitch
P
12.7±1.0
12.7±0.3
6.35±0.40
2.5 +0.4/-0.0
2.5 +0.4/-0.0
0.0±0.1
P0
P2
F1
F2
Δh
W
Component to Perforation (Length Direction)
Lead Spread
Lead Spread
Component Alignment
Carrier Tape Width
18.0 +1.0/-0.5
W0
W1
W2
H0
H1
D0
t
Hold-down Tape Width
Perforation Position
6.0±0.5
9.0±0.5
Hold-down Tape Position
Lead Clinch Height
(0.5)
16.0±0.5
Less than 24.7
4.0±0.2
Component Height
Perforation Diameter
Taped Lead Thickness
Component Base Height
0.7±0.2
H
19.0±0.5
Note:ꢀThicknessꢀlessꢀthanꢀ0.38±0.05mm~0.5mm.
P0 Accumulated pitch tolerance: ±1mm/20pitches.
( ) Bracketed figures are for reference only.
Rev. 1.00
28
February 22, 2012
HT77xxS
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
29
February 22, 2012
相关型号：
HT7750SA(SOT-89)
Switching Regulator/Controller, Voltage-mode, 0.2A, 500kHz Switching Freq-Max, CMOS
HOLTEK
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