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PDF AX6639 Data sheet ( Hoja de datos )
| Número de pieza | AX6639 | |
| Descripción | 3A High Output Current LDO Regulator | |
| Fabricantes | AXElite | |
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AX6639/A
3A High Output Current LDO Regulator
GENERAL DESCRIPTION
The AX6639/A is a low noise, high output current, low quiescent current and low
dropout linear regulator. The Device includes pass element, error amplifier, band-gap,
current-limit and thermal shutdown circuitry. The output current is up to 3A. The
characteristics of low dropout voltage and less quiescent current make it good for some
critical current application, for example, some battery powered devices. The typical
quiescent current is approximately 200µA. There are 1.5V, 1.8V, 2.5V, 3.3V fixed output
voltage and adjustable output versions (SOP-8L-EP and TO263-5L Only). Built-in
current-limit, Short current protection and thermal-shutdown functions prevent any fault
condition from IC damage.
FEATURES
- Input voltage range : 2.6V~5.5V
- Adjustable Output (SOP-8L-EP and TO263-5L Only) and fixed Output voltage for 1.5V,
1.8V, 2.5V and 3.3V
- Dropout voltage is 380mV at 3A output current
- Guaranteed 3A output current
- Low quiescent current is 200µA (typ.)
- Fast transient response
- Current limit and thermal shutdown protection
- Short circuit current fold-back
- Available in the 3-Pin TO220, SOT-223, TO252, 2-pin TO263 and 5-Pin TO263 and
SOP-8L-EP Pb-Free packages
1/17
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.5 Jul.27, 2010
1 page  
AX6639/A
ABOLUTE MAXIMUM RATING (at TA=25°C)
Characteristics
Symbol
Rating
Unit
VIN Pin Voltage
VIN GND - 0.3 to 6 V
Output Voltage
EN Pin Voltage
VOUT GND - 0.3 to VIN + 0.3 V
VEN GND - 0.3 to 6 V
FB Pin Voltage
VFB GND - 0.3 to 6 V
Power Dissipation
PD Internally Limited W
Storage Temperature Range
TST
-40 to +150
°C
Operating Temperature Range
TOP
-40 to +85
°C
Junction Temperature
TJ
-40 to +125
°C
SOT223
15
SOP8L
15
Thermal Resistance from Junction to case
TO263 θJC
3.5 °C/W
TO252
10
TO220
3.5
SOT223
75
SOP8L
40
Thermal Resistance from Junction to ambient TO263 θJA
25 °C/W
TO252
45
TO220
25
Note: θJA is measured with the PCB copper area of approximately 1in2 (Multi-layer). That need connect to tap or
exposed pad (SOP-8L-EP only) pin.
ELECTRICAL CHARACTERISTICS VIN = 5V, TA = 25°C (unless otherwise noted)
Characteristics
Symbol
Conditions
Min Typ Max Units
Input Voltage
VIN IOUT=30mA (Note1)
2.6 - 5.5 V
Output Voltage Accuracy
Feedback Voltage (SOP-8L-EP
and TO263-5L Only)
FB Input Leakage Current
(SOP-8L-EP and TO263-5L
Only)
Quiescent Current
Shutdown Current
ΔVOUT IOUT=1mA (Note1)
VFB IOUT = 1mA
-2 - +2 %
0.784 0.8 0.816 V
IFB VFB=0.8V
-100 - 100 nA
IQ IOUT =0mA, VIN=5V
-
ISTB
For TO263-5L and SOP-8L
Only
-
VOUT=1.50V -
200 300 μA
2 5 uA
1.20 1.5
Dropout Voltage
VDROP IOUT=3A
VOUT=1.80V
VOUT=2.50V
- 0.9 1.2
V
- 0.57 0.7
VOUT=3.30V - 0.38 0.6
5/17
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.5 Jul.27, 2010
5 Page 
AX6639/A
TYPICAL CHARACTERISTICS (CONTINUOUS)
Temperaute VS VOUT
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74 VIN=4V
IOUT=10mA
1.72 AX6639-1.8V
1.70
-40℃ -20℃ 0℃ 25℃ 50℃ 85℃ 105℃ 125℃
Temperature(℃)
Temperaute VS ICCQ
400
350
300
250
200
150
100
50 VIN=5V
IOUT=0A
0
-40℃ -20℃ 0℃ 25℃ 50℃ 85℃ 105℃ 125℃
Temperature(℃)
Power-ON (VIN=5V, VOUT=3.3V, IOUT=2A)
Temperaute VS VOUT
3.40
3.38
3.36
3.34
3.32
3.30
3.28 c
3.26
3.24 VIN=4V
IOUT=10mA
3.22 AX6639-3.3V
3.20
-40℃ -20℃ 0℃ 25℃ 50℃ 85℃ 105℃ 125℃
Temperature(℃)
Load Transient
11/17
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.5 Jul.27, 2010
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet AX6639.PDF ] | |
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