LD1117
LOW DROP FIXED AND ADJUSTABLE
POSITIVE VOLTAGE REGULATORS
■ LOWDROPOUTVOLTAGE(1V TYP)
■ 2.85VDEVICE PERFORMANCESARE
SUITABLEFORSCSI-2 ACTIVE
TERMINATION
■ OUTPUT CURRENT UP TO 800mA
■
FIXED OUTPUTVOLTAGE OF:1.8V,2.5V,
2.85V,3.0V,3.3V,5.0V
■ ADJUSTABLEVERSIONAVAILABILITY
=1.25V)
(V
ref
■ INTERNALCURRENTAND THERMALLIMIT
■ AVAILABLEIN ± 1% (AT 25
FULLTEMPERATURERANGE
■ SUPPLYVOLTAGEREJECTION:75 dB (TYP)
■ TEMPERATURERANGE: 0
DESCRIPTION
The LD1117 is aLOW DROP Voltage Regulator
able to provide up to 800mA of Output Current,
available even in adjustable version
(V
=1.25V). Concerning fixed versions, are
ref
offered the following Output Voltages: 2.5V,
2.85V, 3.0V 3.3V and 5.0V. The 2.85V type is
ideal for SCSI-2 lines active termination. The
device is supplied in: SOT-223, DPAK, SO-8
and TO-220. The SOT-223 and DPAK surface
mount packages optimize the thermal
characteristics even offering a relevant space
saving effect. High efficency is assured by NPN
o
C) AND2% IN
o
C TO 125oC
SERIES
SO-8SOT-223
TO-252 (DPAK) TO-220
pass transistor. In fact in this case, unlike than
PNP one, the Quiescent Current flows mostly
into the load. Only a very common 10µF
minimum capacitor is needed for stability. On
chip trimming allows the regulator to reach a
very tight output voltage tolerance, within±1%
o
at 25
pin compatible with the other standard
Adjustable voltage regulators maintaining the
better performances in terms of Drop and
Tolerance.
C. The ADJUSTABLE LD1117 is pin to
BLOCKDIAGRAM
June 2002
1/18
LD1117 SERIES
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
DC InputVoltage 15 V
IN
P
PowerDissipation 12 W
tot
T
Absolute Maximum Ratings are those value beyond which damage to the device may occur. Functional operation under these condition is
not implied. Over the above suggested Max Power Dissipation a Short Circuit could definetively damage the device.
Storage TemperatureRange -40 to 150
stg
T
OperatingJunction Temperature Range 0 to 125
op
THERMALDATA
Symbol Parameter SOT-223 SO-8 DPAK TO-220 Unit
R
thj-cas e
R
thj-amb
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient
15 20 8 3
50
APPLICATION CIRCUIT
o
o
o
C/W
o
C/W
C
C
2/18
LD1117 SERIES
CONNECTION DIAGRAM AND ORDERING NUMBERS
SOT-223 SO-8
(top view)
DPAK TO-220
NOTE: The TAB is connected to the V
SOT-223 SO-8 DPAK TO-220 Output Voltage
LD1117S18
LD1117S18C
LD1117S25
LD1117S25C
LD1117S28
LD1117S30
LD1117S30C
LD1117S33
LD1117S33C
LD1117S50
LD1117S50C
LD1117S LD1117D LD1117DT LD1117V ADJUSTABLE
OUT
LD1117D18
LD1117D18C
LD1117D25
LD1117D25C
LD1117D28
LD1117D30
LD1117D30C
LD1117D33
LD1117D33C
LD1117D50
LD1117D50C
LD1117DT18
LD1117DT18C
LD1117DT25
LD1117DT25C
LD1117DT28
LD1117DT30
LD1117DT30C
LD1117DT33
LD1117DT33C
LD1117DT50
LD1117DT50C
LD1117V18
LD1117V18C
LD1117V25
LD1117V25C
LD1117V28
LD1117V30
LD1117V30C
LD1117V33
LD1117V33C
LD1117V50
LD1117V50C
1.8V
1.8V
2.5V
2.5V
2.85V
3V
3V
3.3V
3.3V
5V
5V
FROM1.25TO 15V
3/18
LD1117 SERIES
ELECTRICAL CHARACTERISTICS FOR LD1117#18
= 0 to 125oC, Co=10µF unless otherwisespecified)
T
j
(refer to the test circuits,
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
OutputVoltage Vin=3.8V Io=10mA Tj=25oC 1.78 1.8 1.82 V
o
V
OutputVoltage Io=0 to 800mA Vin=3.3to8 V 1.76 1.84 V
o
V
LineRegulation Vin=3.3to 8V Io=0mA 1 6 mV
∆
o
V
LoadRegulation Vin=3.3V Io=0 to800 mA 1 10 mV
∆
o
V
Temperature Stability 0.5 %
∆
o
V
LongTermStability 1000hrs Tj= 125oC0.3%
∆
o
V
OperatingInput Voltage Io=100mA 10 V
in
I
QuiescentCurrent Vin≤ 8V 5 10 mA
d
I
OutputCurrent Vin=6.8V Tj=25oC 800 950 1300 mA
o
eN OutputNoise Voltage B = 10Hz to 10KHz T
SVR Supply Voltage Rejection I
Dropout Voltage Io=100mA
V
d
Thermal Regulation T
=40 mA f = 120 Hz Tj=25oC
o
=5.5V V
V
in
=500mA
I
o
=800mA
I
o
=25oC 30ms Pulse 0.01 0.1 %/W
a
ripple
=25oC100
j
60 75 dB
= 1 Vpp
1
1.05
1.10
1.1
1.15
1.2
ELECTRICAL CHARACTERISTICS FOR LD1117#25(refer to the test circuits,
= 0 to 125oC, Co=10µF unless otherwisespecified)
T
j
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
OutputVoltage Vin=4.5V Io=10mA Tj=25oC 2.475 2.5 2.525 V
o
V
OutputVoltage Io=0 to 800mA Vin=3.9to10V 2.45 2.55 V
o
V
LineRegulation Vin=3.9to 10 V Io=0mA 1 6 mV
∆
o
∆V
LoadRegulation Vin=3.9V Io=0 to800 mA 1 10 mV
o
∆V
Temperature Stability 0.5 %
o
∆V
LongTermStability 1000hrs Tj= 125oC0.3%
o
V
OperatingInput Voltage Io=100mA 15 V
in
I
QuiescentCurrent V
d
I
OutputCurrent Vin=7.5V Tj=25oC 800 950 1300 mA
o
eN OutputNoise Voltage B = 10Hz to 10KHz T
SVR Supply Voltage Rejection I
Dropout Voltage Io=100mA
V
d
Thermal Regulation T
10 V 5 10 mA
≤
in
=25oC100
j
=40 mA f = 120 Hz Tj=25oC
o
=5.5V V
V
in
I
=500mA
o
=800mA
I
o
=25oC 30ms Pulse 0.01 0.1 %/W
a
ripple
= 1 Vpp
60 75 dB
1
1.05
1.10
1.1
1.15
1.2
V
µ
V
V
V
V
µ
V
V
V
4/18
LD1117 SERIES
ELECTRICAL CHARACTERISTICS FOR LD1117#28
= 0 to 125oC, Co=10µF unless otherwisespecified)
T
j
(refer to the test circuits,
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
OutputVoltage Vin=4.85V Io=10mA Tj=25oC 2.82 2.85 2.88 V
o
V
OutputVoltage Io=0 to 800mA Vin=4.25to10V 2.79 2.91 V
o
V
LineRegulation Vin=4.25to 10 V Io=0 mA 1 6 mV
∆
o
V
LoadRegulation Vin=4.25V Io= 0 to 800 mA 1 10 mV
∆
o
V
Temperature Stability 0.5 %
∆
o
V
LongTermStability 1000hrs Tj= 125oC0.3%
∆
o
V
OperatingInput Voltage Io=100mA 15 V
in
I
QuiescentCurrent Vin≤ 10 V 5 10 mA
d
I
OutputCurrent Vin=7.85V Tj=25oC 800 950 1300 mA
o
eN OutputNoise Voltage B = 10Hz to 10KHz T
SVR Supply Voltage Rejection I
Dropout Voltage Io=100mA
V
d
Thermal Regulation T
=40 mA f = 120 Hz Tj=25oC
o
=5.85V V
V
in
=500mA
I
o
=800mA
I
o
=25oC 30ms Pulse 0.01 0.1 %/W
a
=25oC100
j
60 75 dB
=1 Vpp
ripple
1
1.05
1.1
1.1
1.15
1.2
ELECTRICAL CHARACTERISTICS FOR LD1117#30(refer to the test circuits,
= 0 to 125oC, Co=10µF unless otherwisespecified)
T
j
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
OutputVoltage Vin=5V Io=10mA Tj=25oC2.9733.03V
o
V
OutputVoltage Io=0 to 800mA Vin=4.5to10V 2.94 3.06 V
o
V
LineRegulation Vin=4.5to 12 V Io=0mA 1 6 mV
∆
o
∆V
LoadRegulation Vin=4.5V Io=0 to800 mA 1 10 mV
o
∆V
Temperature Stability 0.5 %
o
∆V
LongTermStability 1000hrs Tj= 125oC0.3%
o
V
OperatingInput Voltage Io=100mA 15 V
in
I
QuiescentCurrent V
d
I
OutputCurrent Vin=8V Tj=25oC 800 950 1300 mA
o
eN OutputNoise Voltage B = 10Hz to 10KHz T
SVR Supply Voltage Rejection I
Dropout Voltage Io=100mA
V
d
Thermal Regulation T
12 V 5 10 mA
≤
in
=25oC100
j
=40 mA f = 120 Hz Tj=25oC
o
=6V V
V
in
I
=500mA
o
=800mA
I
o
=25oC 30ms Pulse 0.01 0.1 %/W
a
ripple
=1 Vpp
60 75 dB
1
1.05
1.1
1.1
1.15
1.2
V
µ
V
V
V
V
µ
V
V
V
5/18
LD1117 SERIES
ELECTRICAL CHARACTERISTICS FOR LD1117#33
= 0 to 125oC, Co=10µF unless otherwisespecified)
T
j
(refer to the test circuits,
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
OutputVoltage Vin=5.3V Io=10 mA Tj=25oC 3. 267 3.3 3.333 V
o
V
OutputVoltage Io=0 to 800mA Vin=4.75to10V 3.235 3.365 V
o
V
LineRegulation Vin=4.75to 15 V Io=0 mA 1 6 mV
∆
o
V
LoadRegulation Vin=4.75V Io= 0 to 800 mA 1 10 mV
∆
o
V
Temperature Stability 0.5 %
∆
o
V
LongTermStability 1000hrs Tj= 125oC0.3%
∆
o
V
OperatingInput Voltage Io=100mA 15 V
in
I
QuiescentCurrent Vin≤ 15 V 5 10 mA
d
I
OutputCurrent Vin=8.3V Tj=25oC 800 950 1300 mA
o
eN OutputNoise Voltage B = 10Hz to 10KHz T
SVR Supply Voltage Rejection I
Dropout Voltage Io=100mA
V
d
Thermal Regulation T
=40 mA f = 120 Hz Tj=25oC
o
=6.3V V
V
in
=500mA
I
o
=800mA
I
o
=25oC 30ms Pulse 0.01 0.1 %/W
a
ripple
=25oC100
j
60 75 dB
= 1 Vpp
1
1.05
1.1
1.1
1.15
1.2
ELECTRICAL CHARACTERISTICS FOR LD1117#50(refer to the test circuits,
= 0 to 125oC, Co=10µF unless otherwisespecified)
T
j
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
OutputVoltage Vin=7V Io=10mA Tj=25oC4.9555.05V
o
V
OutputVoltage Io=0 to 800mA Vin=6.5to15V 4.9 5.1 V
o
V
LineRegulation Vin=6.5to 15 V Io= 0 mA 1 10 mV
∆
o
∆V
LoadRegulation Vin=6.5V Io=0 to800 mA 1 15 mV
o
∆V
Temperature Stability 0.5 %
o
∆V
LongTermStability 1000hrs Tj= 125oC0.3%
o
V
OperatingInput Voltage Io=100mA 15 V
in
I
QuiescentCurrent V
d
I
OutputCurrent Vin=10V Tj=25oC 800 950 1300 mA
o
eN OutputNoise Voltage B = 10Hz to 10KHz T
SVR Supply Voltage Rejection I
Dropout Voltage Io=100mA
V
d
Thermal Regulation T
15 V 5 10 mA
≤
in
=25oC100
j
=40 mA f = 120 Hz Tj=25oC
o
=8V V
V
in
I
=500mA
o
=800mA
I
o
=25oC 30ms Pulse 0.01 0.1 %/W
a
ripple
=1 Vpp
60 75 dB
1
1.05
1.1
1.1
1.15
1.2
V
µ
V
V
V
V
µ
V
V
V
6/18
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