UNISONIC TECHNOLOGIES LD1117 Datasheet

UTC LD1117 LINEAR INTEGRATED CIRCUIT

A

LOW DROP FIXED AND
ADJUSTABLE POSITIVE VOLTAGE
REGULATORS

DESCRIPTION

The UTC LD1117 is a LOW DROP Voltage Regulator able
to provide up to 800mA of Output Current, available even in
adjustable version (Vref=1.25V). Concerning fixed versions,
are offered the following Output Voltages: 2.5V, 2.85V, 3.0V,

3.0V and 5.0V. The 2.85V type is ideal for SCSI-2 lines active
termination. The device is supplied in: SOT-223, TO-252,
SOP8 and TO-220. The SOT-223 and TO-252 surface mount
packages optimize the thermal characteristics even offering a
relevant space saving effect. High efficiency is assured by
NPN pass transistor. In fact in the 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% at 25°C. The ADJUSTABLE
LD1117 is pin to pin compatible with the other standard

djustable voltage regulators maintaining the better

performances in terms of Drop and Tolerance.

FEATURES

*Low dropout voltage (1V Typ.)
*2.85V device performances are suitable for SCSI-2 active

termination
*Output current up to 800mA
*Fixed output voltage of: 2.5V, 2,85V, 3.0V, 3.3V, 5.0V
*Adjustable version availability (Vref=1.25V)
*Internal current and thermal limit
*Available in ±1%(at 25°C) and 2% in all temperature range
*Supply voltage rejection: 75dB (TYP)
*Temperature range: 0°C to 125°C

1

2

3

1

SOT-223 1: GND; 2: Vout; 3: Vin
SOP-8 1: GND; 2,3,6,7: Vout; 4: Vin;

TO-220 1: GND; 2: Vout; 3: Vin
TO-252 1: GND; 2: Vout; 3: Vin

5,8: NC

SOP-8SOT-223

TO-220TO-252

UTC UNISONIC TECHNOLOGIES CO., LTD. 1

QW-R102-006,A

UTC LD1117 LINEAR INTEGRATED CIRCUIT

BLOCK DIAGRAM

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL VALUE UNIT

DC Input Voltage VIN 15 V
Power Dissipation Ptot 12 W
Storage temperature Tstg -65 ~ +150
Operating Junction
Temperature
Note: Absolute Maximum Ratings are those value beyond which damage to the device may occur. Functional
operation under there condition is not implied. Over the above suggested Max Power Dissipation a Short Circuit
could definitively damage the device.

Top 0 ~ +125

THERMAL DATA

PARAMETER SYMBOL VALUE UNIT

Thermal Resistance Junction-case
SOT-223
SOP-8
TO-252
TO-220
Thermal Resistance Junction-ambient
TO-220

Rth-case

15
20

8
3

Rthj-amb

50

°C
°C

°C/W
°C/W
°C/W
°C/W

°C/W

UTC UNISONIC TECHNOLOGIES CO., LTD. 2

QW-R102-006,A

UTC LD1117 LINEAR INTEGRATED CIRCUIT

APPLICATION CIRCUIT

UTC LD1117-2.5 ELECTRICAL CHARACTERISTICS

(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)

PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT

Output Voltage Vo
Output Voltage Vo Io=0 to 800mA, Vin=3.9 to 10V 2.450 2.550 V
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage Vin Io=100mA 15 V
Quiescent Current Id
Output Current Io
Output Noise Voltage eN
Supply Voltage
Rejection
Dropout Voltage Vd Io=100mA

Thermal Regulation

Vin=4.5V, Io=10mA, Tj=25°C

∆Vo

Vin=3.9 to 10V, Io=0mA 1 6 mV

∆Vo

Vin=3.9V, Io=0 to 800mA 1 10 mV

∆Vo

0.5 %

∆Vo 1000 hrs, Tj=125°C

Vin≤10V
Vin=7.5V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C
Io=40mA, f=120Hz, Tj=25°C, Vin=5.5V,

SVR

Vripple=1Vpp

Io=500mA
Io=800mA
Ta=25°C, 30ms Pulse

2.475 2.500 2.525 V

0.3 %

5 10 mA

800 950 1200 mA

100

60 75 dB

1.00

1.05

1.10

0.01 0.10 %/W

1.10

1.15

1.20

µV

V
V
V

UTC LD1117-2.8 ELECTRICAL CHARACTERISTICS

(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)

PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT

Output Voltage Vo
Output Voltage Vo Io=0 to 800mA, Vin=4.25 to 10V 2.79 2.91 V
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage Vin Io=100mA 15 V
Quiescent Current Id
Output Current Io
Output Noise Voltage eN

Vin=4.85V, Io=10mA, Tj=25°C

∆Vo

Vin=4.25 to 10V, Io=0mA 1 6 mV

∆Vo

Vin=4.25V, Io=0 to 800mA 1 10 mV

∆Vo

0.5 %

∆Vo 1000 hrs, Tj=125°C

Vin≤10V
Vin=7.85V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C

2.82 2.85 2.88 V

0.3 %

5 10 mA

800 950 1200 mA

100

µV

UTC UNISONIC TECHNOLOGIES CO., LTD. 3

QW-R102-006,A

UTC LD1117 LINEAR INTEGRATED CIRCUIT

PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT

Supply Voltage
Rejection
Dropout Voltage Vd Io=100mA

Thermal Regulation

Io=40mA, f=120Hz, Tj=25°C, Vin=5.85V,

SVR

Vripple=1Vpp

Io=500mA
Io=800mA
Ta=25°C, 30ms Pulse

UTC LD1117-3.0 ELECTRICAL CHARACTERISTICS

(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)

PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT

Output Voltage Vo
Output Voltage Vo Io=0 to 800mA, Vin=4.5 to 10V 2.94 3.06 V
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage Vin Io=100mA 15 V
Quiescent Current Id
Output Current Io
Output Noise Voltage eN
Supply Voltage
Rejection
Dropout Voltage Vd Io=100mA

Thermal Regulation

Vin=5V, Io=10mA, Tj=25°C

∆Vo

Vin=4.5 to 12V, Io=0mA 1 6 mV

∆Vo

Vin=4.5V, Io=0 to 800mA 1 10 mV

∆Vo

0.5 %

∆Vo 1000 hrs, Tj=125°C

Vin≤12V
Vin=8V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C
Io=40mA, f=120Hz, Tj=25°C, Vin=6V,

SVR

Vripple=1Vpp

Io=500mA
Io=800mA
Ta=25°C, 30ms Pulse

UTC LD1117-3.3 ELECTRICAL CHARACTERISTICS

(refer to the test circuits, Tj=0 to 125°C, Co=10µF unless otherwise specified)

PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT

Output Voltage Vo
Output Voltage Vo Io=0 to 800mA, Vin=4.75 to 10V 3.235 3.365 V
Line Regulation
Load Regulation
Temperature stability
Long Term Stability
Operating Input Voltage Vin Io=100mA 15 V
Quiescent Current Id
Output Current Io
Output Noise Voltage eN
Supply Voltage
Rejection
Dropout Voltage Vd Io=100mA

Thermal Regulation

Vin=5.3V, Io=10mA, Tj=25°C

∆Vo

Vin=4.75 to 15V, Io=0mA 1 6 mV

∆Vo

Vin=4.75V, Io=0 to 800mA 1 10 mV

∆Vo

0.5 %

∆Vo 1000 hrs, Tj=125°C

Vin≤15V
Vin=8.3V, Tj=25°C
B=10Hz to 10KHz, Tj=25°C
Io=40mA, f=120Hz, Tj=25°C, Vin=6.3V,

SVR

Vripple=1Vpp

Io=500mA
Io=800mA
Ta=25°C, 30ms Pulse

60 75 dB

1.00

1.05

1.10

0.01 0.10 %/W

2.97 3.00 3.03 V

0.3 %

5 10 mA

800 950 1200 mA

100

60 75 dB

1.00

1.05

1.10

0.01 0.10 %/W

3.267 3.300 3.333 V

0.3 %

5 10 mA

800 950 1200 mA

100

60 75 dB

1.00

1.05

1.10

0.01 0.10 %/W

1.10

1.15

1.20

1.10

1.15

1.20

1.10

1.15

1.20

V
V
V

µV

V
V
V

µV

V
V
V

UTC UNISONIC TECHNOLOGIES CO., LTD. 4

QW-R102-006,A