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PDF LM37102 Data sheet ( Hoja de datos )
| Número de pieza | LM37102 | |
| Descripción | (LM37101 / LM37102) 1A Low-Voltage Low-Dropout Regulator | |
| Fabricantes | HTC Korea | |
| Logotipo |  |
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1A Low-Voltage Low-Dropout Regulator
LM37101/37102
FEATURES
Fixed and adjustable output voltages to 1.24V
470mV typical dropout at 1A
Ideal for 3.0V to 2.5V conversion
Ideal for 2.5V to 1.8V or 1.5V conversion
1A minimum guaranteed output current
1% initial accuracy
Low ground current
Current limiting and thermal shutdown
Reversed-battery protection
Reversed-leakage protection
Fast transient response
Moisture Sensitivity Level 3
APPLICATION
Battery Powered Equipments
Motherboards and Graphic Cards
Microprocessor Power Supplies
Peripheral Cards
High Efficiency Linear Regulators
Battery Chargers
SOP-8 PKG
TO-252 PKG
ORDERING INFORMATION
Device
Package
LM37101D-X.X
LM37102D
SOP-8
LM37101RS-X.X
LM37102RS
TO-252
X.X = Output Voltage = 1.5, 1.8, 2.5, 3.3, 5.0
DESCRIPTION
The LM37101/2 is 1A low-dropout linear voltage regulators that provide low-voltage, high-current output. The
LM37101/2 offers extremely low dropout (typically 470mV at 1A) and low ground current (typically 12mA at 1A).
The LM37101 and LM37102 are fixed and adjustable regulators, respectively, in SOP-8 and TO-252 Package.
The LM37101/2 is ideal for PC add-in cards that need to convert from standard 5V to 3.3V, 3.3V to 2.5V or 2.5V
to1.8V. A guaranteed maximum dropout voltage of 630mV overall operating conditions allows the LM37101/2 to
provide2.5V from a supply as low as 3.13V and 1.8V from a supply as low as 2.43V. The LM37101/2 is fully
protected with over current limiting, thermal shutdown, and reversed-battery protection. Fixed voltages of 5.0V,
3.3V, 2.5V, 1.8V and 1.5V are available on LM37101 with adjustable output voltages to 1.24V on LM37102.
Absolute Maximum Ratings (Note 1)
CHARACTERISTIC
Supply Voltage
Enable Voltage
Output Voltage
Lead Temperature (Soldering, 5 sec)
Storage Temperature Range
SYMBOL
VIN
VEN
VOUT
TSOL
TSTG
MIN.
- 0.3
-
-0.3
-
-65
MAX.
+ 20
+ 20
VIN +0.3
260
+ 150
UNIT
V
V
V
℃
℃
Nov. 2011 – R1.1
-1 -
HTC
Free Datasheet http://www.datasheet4u.com/
1 page  
1A Low-Voltage Low-Dropout Regulator
LM37101/37102
LM37102 Only
VREF
Reference Voltage
(Note 9)
IREF
ΔVREF/ΔT
ΔIADJ/ΔT
Adjust Pin Bias
Current
Reference Voltage
Temp. Coefficient (Note 4)
Adjust Pin Bias Current
Temp. Coefficient
1.228 1.24 1.252
1.215
1.265
V
V
1.203
1.277
40 80
120
V
nA
nA
20 ppm/ °C
0.1 99.2 nA/ °C
Note 1. Exceeding the absolute maximum ratings may damage the device.
Note 2. The device is not guaranteed to function outside its operating rating.
Note 3. PD (max)= (TJ (max) - TA) ÷ θJA, where θJA -junction-to-ambient thermal resistance.
Note 4. Output voltage temperature coefficient is ΔVOUT (worst case) ÷ (TJ(max) - TJ(min)) where TJ(max) is +125°C and TJ(min) is 0°C.
Note 5. VDO = VIN - VOUT when VOUT decreases to 99% of its nominal output voltage with VIN = VOUT + 1V. For output voltages below 2.25V,
dropout voltage is the input-to-output voltage differential with the minimum input voltage being 2.25V. Minimum input operating voltage
is 2.25V.
Note 6. IGND is the quiescent current. IIN = IGND + IOUT.
Note 7. Delay time is measured after VEN=VIN. CIN=COUT=10μF.
Note 8. For adjustable device and fixed device with VOUT ≥ 2.5V
Note 9. VREF ≤ VOUT ≤ (VIN - 1V), 2.25V ≤ VIN ≤ 16V, 10mA ≤ IL ≤ 1 A.
Nov. 2011 – R1.1
- 5 - HTC
Free Datasheet http://www.datasheet4u.com/
5 Page 
1A Low-Voltage Low-Dropout Regulator
LM37101/37102
Power Disspation(Pd) vs. Copper Area
1.6 @ TJ=125℃
1.4
1.2
1
0.8
0.6
0.4
10
100
Copper Area (mm2)
1000
Thermal Resistance(ΘJA) vs. Copper Area
140
120
100
80
60
40
10
100
Copper Area (mm2)
1000
Nov. 2011 – R1.1
- 11 -
HTC
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet LM37102.PDF ] | |
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