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PDF AX6642A Data sheet ( Hoja de datos )
| Número de pieza | AX6642A | |
| Descripción | 1.5A High Output Current LDO Regulator | |
| Fabricantes | AXElite | |
| Logotipo |  |
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AX6642/A
1.5A High Output Current LDO Regulator
GENERAL DESCRIPTION
The AX6642/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 1.5A. 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 50µA. Due to internal flexible design; result in extensively
fixed output voltage versions form 1.2V to 5V per 0.1V steps. 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
- Dropout voltage is 450mV at 1.5A output current @ VOUT = 3.30V
- Guaranteed 1.5A output current
- Low quiescent current is 50µA (typ.)
- Fixed Output voltage is form 1.2 V to 5V by 0.1V steps.
- Fast transient response
- Current limit and thermal shutdown protection
- Short circuit current fold-back
- Available in the 3-Pin Pb-Free SOT89, SOT-223, TO263, TO252 and SOP-8L packages
BLOCK DIAGRAM
VIN VOUT
Current
Limit
EN Enable
Thermal
Shutdown
Error
Amp
-+
Bandgap
BP
GND
1/14
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.1 Jul.30, 2010
1 page  
AX6642/A
(SOP-8L only)
VENL Regulator Shutdown
- - 0.6
Enable Pin Current (SOP-8L only)
IENH VEN=VIN
IENL VEN=0V
- 0.003 0.1
μA
- 1 1.5
Temperature Shutdown
TS
- 150 - ºC
Temperature Shutdown
Hysterisis
TSH
- 30 - ºC
Note1: Minimum VIN voltage is defined by output adds a dropout voltage.
Note2: Current limit is measured at constant junction temperature by using pulsed testing with a low ON time.
Note3: Regulation is measured at constant junction temperature by using pulsed testing with a low ON time.
APPLICATION CIRCUIT
1. For SOT223-3L/SOT89-3L/TO252-3L/TO263-2L packages
AX6642/A
VIN VOUT
VIN VOUT
CIN
2.2uF
GND
COUT
2.2uF
2. For SOP-8L package
VIN
CIN
2.2uF
AX6642
VIN
VOUT
EN GND BP
10nF
VOUT
COUT
2.2uF
FUNCTION DESCRIPTIONS
A minimum of 2.2µF capacitor must be connected from VOUT to ground to insure
stability. Typically a large storage capacitor is connected from VIN to ground to ensure that
the input voltage does not sag below the minimum dropout voltage during the load transient
response. This pin must always be dropout voltage higher than VOUT in order for the device
to regulate properly.
5/14
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.1 Jul.30, 2010
5 Page 
(2) TO252-3L
E
b2
D1
be
e1
AX6642/A
5.6
2.25
1.2
Land Pattern Recommendation (Unit: mm)
H
L
Symbol
Dimensions in Millimeters
Min. Nom. Max.
A 2.18 2.29 2.39
A1 - - 0.13
b 0.51 0.71 0.89
b2 4.95 5.21 5.46
C 0.46 0.53 0.61
C1 0.46 0.53 0.58
D 5.33 5.46 5.59
D1 4.57 -
-
E 6.35 6.55 6.73
e 2.29 BSC
e1 4.58 BSC
H 9.4 9.7 10.4
L 1.4 1.6 1.78
L1 - - 1.02
L2 1.52 1.78 2.03
Mold flash shall not exceed 0.005inch per side
JEDEC outline: TO-252 AB
SEATING PLANE
Dimensions in Inches
Min. Nom. Max.
0.086
0.09 0.094
- - 0.005
0.02 0.028 0.035
0.195
0.205 0.215
0.018
0.021 0.024
0.018
0.021 0.023
0.21 0.215 0.22
0.18 -
-
0.25 0.258 0.265
0.090 BSC.
0.180 BSC.
0.37 0.382 0.41
0.055
0.063
0.07
- - 0.04
0.06 0.07 0.08
11/14
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.1.1 Jul.30, 2010
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet AX6642A.PDF ] | |
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