|
Details, datasheet, quote on part number:UTCLM2937
| |
| Part: | UTCLM2937 |
| Category: | Power Management => Regulators => Linear Voltage Regulators => LDO (Low Drop Out) => Low Dropout Regulators |
| Description: | Description = 500mA/0.5V Low Dropout Voltage Regulator ;; Package = TO-220, TO-263, TO-263-5 ;; |
| Company: | Unisonic Technologies |
| Datasheet: | Download UTCLM2937 datasheet File size : 219 kB |
| Request For quote: | Find where to buy UTCLM2937
|
| |
Datasheet text preview:
UTC LM2937-XX LINEAR INTEGRATED CIRCUIT
500mA LOW DROPOUT VOLTAGE REGULATOR
DESCRIPTION
The UTC LM2937-XX is a positive voltage regulator capable of supplying up to 500mA of load current. The use of a PNP power transistor provides a low dropout voltage characteristic. With a load current of 500mA the minimum input to output voltage differential required for the output to remain in regulation is typically 0.5V(1V guaranteed maximum over the full operating temperature range). Special circuitry has been incorporated to minimize the quiescent current to typically only 10mA with a full 500mA load current when the input to output voltage differential is greater than 3V. The UTC LM2937-XX requires an output bypass capacitor for stability. As with most low dropout regulators, the ESR of this capacitor remains a critical design parameter, but the LM2937 includes special compensation circuitry that relaxes ESR requirements. The UTC LM2937-XX is stable for all ESR below 3 .This allows the use of low ESR chip capacitors. Ideally suited for automotive applications, the UTC LM2937-XX will protect itself and any load circuitry from reverse battery connections, two-battery jumps and up to +60V/-50V load dump transients. Familiar regulator features such as short circuit and thermal shutdown protection are also built in.
1
T0-220
1
TO-263-5
1
T0-263
TO-220/TO263 : TO-263-5 : 1: N/C
1:Input
2:GND
3:Output
2: ON/OFF 5: Output
3: GND
4: Input
FEATURES
*Fully specified for operation over -40°C to +125°C *Output current in excess of 500mA *Output trimmed for 5% tolerance under all operating conditions *Typical dropout voltage of 0.5V at full rated load current *Wide output capacitor ESR range, up to 3 *Reverse battery protection *Internal short circuit and thermal overload protection *60V input transient protection *Mirror image insertion protection *Built-in ON/OFF control function
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R102-012,C
UTC LM2937-XX LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION
U N R E G U LA T E D IN P U T C in * 10 F
V IN
1
L M 2 9 3 7 -X X
2
3
V OUT
R E G U LA T E D OUTPUT C OU T ** 1 0 F
IQ
ON/OFF CONTROL APPLICATION
U N R E G U LA T E D IN P U T C in * 10 F
V IN
4
L M 2 9 3 7 -X X
N /C 1 3
5
V OUT
R E G U LA T E D OUTPUT C OU T ** 1 0 F
IQ
2 O N /O F F
* Required if the regulator is located more than 3 inches from the power supply filter capacitors. **Required for stability. COUT must be at least 10µF(over the full expected operating temperature range) and located as close as possible to the regulator. The equivalent series resistance, ESR ,of this capacitor may be as high as 3.
ABSOLUTE MAXIMUM RATINGS(Note 1)
PARAMETER
Internal Power Dissipation(Note 2) Input Voltage Storage temperature Range Maximum Junction Temperature
SYMBOL
VIN Tstg Tj
RATING
Internally limited 26 -65 ~ +150 150
UNIT
V °C °C
LM2937-3.3V ELECTRICAL CHARACTERISTICS
( VIN=VNOM+5V,IO=500mA,Cout =10µF, Tj=TA=25°C ,unless otherwise specified )
PARAMETER
Output Voltage Line Regulation Load Regulation Quiescent Current Output Noise Voltage Long Term Stability
SYMBOL
Vo VO VO IQ VNOISE
TEST CONDITIONS
5mAIO500mA Vo+2VVIN26V, IO=5mA 5mAIO500mA (Vo+2V)VIN 26V,IO=5mA VIN= Vo+5V, IO=500mA 10Hz-100kHz, IO=5mA 1000Hrs
MIN.
3.21
TYP.
3.30 9 3 2 10 100 12
MAX.
3.39 30 30 10 20
UNIT.
V mV mV mA mA µVrms mV
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R102-012,C
UTC LM2937-XX LINEAR INTEGRATED CIRCUIT
PARAMETER
Dropout Voltage Short Circuit Current Peak Line Transient Voltage Reverse DC Input Voltage Reverse Transient Input Voltage
SYMBOL
VD IS Tin VRin VTRRI
TEST CONDITIONS
IO=500mA IO=50mA tf100ms ,RL=100 VO -0.6V ,RL=100 tf<1ms ,RL=100
MIN.
TYP.
0.5 110 1.0 75 -30 -75
MAX.
1.0 250
UNIT.
V mV A V V V
0.6 60 -15 -50
LM2937-5.0V ELECTRICAL CHARACTERISTICS
(VIN=VNOM+5V,IO=500mA,Cout =10µF, Tj=TA=25°C,,unless otherwise specified )
PARAMETER
Output Voltage Line Regulation Load Regulation Quiescent Current Output Noise Voltage Long Term Stability Dropout Voltage Short Circuit Current Peak Line Transient Voltage Reverse DC Input Voltage Reverse Transient Input Voltage
SYMBOL
Vo VO VO IQ VNOISE VD IS Tin VRin VTRRI
TEST CONDITIONS
5mAIO500mA Vo+2VVIN26V, IO=5mA 5mAIO500mA (Vo+2V)VIN 26V,IO=5mA VIN= Vo+5V, IO=500mA 10Hz-100kHz, IO=5mA 1000Hrs IO=500mA IO=50mA tf100ms ,RL=100 VO -0.6V ,RL=100 tf<1ms ,RL=100
MIN.
4.85
TYP.
5.00 15 5 2 10 150 20 0.5 110 1.0 75 -30 -75
MAX.
5.15 50 50 10 20
UNIT.
V mV mV mA mA µVrms mV V mV A V V V
1.0 250
0.6 60 -15 -50
LM2937-8.0V ELECTRICAL CHARACTERISTICS
(VIN=VNOM+5V,IO=500mA,Cout =10µF, Tj=TA=25°C,,unless otherwise specified )
PARAMETER
Output Voltage Line Regulation Load Regulation Quiescent Current Output Noise Voltage Long Term Stability Dropout Voltage Short Circuit Current Peak Line Transient Voltage Reverse DC Input Voltage Reverse Transient Input Voltage
SYMBOL
Vo VO VO IQ VNOISE VD IS Tin VRin VTRRI
TEST CONDITIONS
5mAIO500mA Vo+2VVIN26V, IO=5mA 5mAIO500mA (Vo+2V)VIN 26V,IO=5mA VIN= Vo+5V, IO=500mA 10Hz-100kHz, IO=5mA 1000Hrs IO=500mA IO=50mA tf100ms ,RL=100 VO -0.6V ,RL=100 tf<1ms ,RL=100
MIN.
7.76
TYP.
8.00 24 8 2 10 240 32 0.5 110 1.0 75 -30 -75
MAX.
8.24 80 80 10 20
UNIT.
V mV mV mA mA µVrms mV V mV A V V V
1.0 250
0.6 60 -15 -50
LM2937-10.0V ELECTRICAL CHARACTERISTICS
(VIN=VNOM+5V,IO=500mA,Cout =10µF, Tj=TA=25°C,,unless otherwise specified )
PARAMETER
Output Voltage Line Regulation
SYMBOL
Vo VO
TEST CONDITIONS
5mAIO500mA Vo+2VVIN26V, IO=5mA
MIN.
9.70
TYP.
10.00 30
MAX.
10.30 100
UNIT.
V mV
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R102-012,C
|
|
