AXV-002
ZERO DROPOUT VOLTAGE REGULATOR 0.1A
PRELIMINARY
September 98
Page 1 of 4
98008-05-002-03.doc
IXYS Corporation 3540 Bassett Street, Santa Clara, CA 95054 TEL:408-982-0700 FAX:408-496-0670
IXYS Semiconductor, GmbH. Edisonstr. 15 D-68623 Lampertheim, Germany TEL:+49-6206-503-0 FAX:+49-6206-503-627
Features :
2mV dc dropout at 0.1A load
AC output impedance better than 100m
.
DC output impedance better than10m
.
High Noise attenuation at
dropout Voltage as low as 3mV.
Output voltage track input voltage for Vin<Vout
Shutdown
Adjustable output from 2.7V up to 6V
1 2 3 4 5
AXV-002
Fig.1
Product Description
The AXV is a family of "Zero" Dropout Voltage regulators (dropout voltage less than 2 mV @
0.1A load) provides high attenuation (50dB @ 1KHz) at a dropout Voltage as low as 3mV. When
the input voltage is less than the specified output voltage, the output voltage tracks the input voltage
with 2mV voltage dropout at 0.1A load, this feature is a unique advantage for battery powered
applications.
The AXV002 is designed for supply voltage of 2V up to 6V and up to 0.1A load. A low level
voltage (less than 0.3V), at SD (shut down) input, shuts the output voltage and the quiescent current
drops below 60uA. This feature fits power management, as well as battery power saving
applications. In addition the AXV002 has a reference input to control the output voltage in the range
of 2.7 up to 6V.
Applications
Pin Description (See Fig1.)
Battery power
PIN
NAME
Description
Power management
1
GND
Ground
Mixed signal
2
REFF
Reference input
Conducted noise filter
3
IN
Input Voltage
GPS
4
OUT
Output Voltage
5V to 3.3 Logic Regulator
5
SD
Shutdown
AXV-002
PRELIMINARY
September 98
Page 2 of 4
98008-05-002-03.doc
IXYS Corporation 3540 Bassett Street, Santa Clara, CA 95054 TEL:408-982-0700 FAX:408-496-0670
IXYS Semiconductor, GmbH. Edisonstr. 15 D-68623 Lampertheim, Germany TEL:+49-6206-503-0 FAX:+49-6206-503-627
Absolute Maximum Ratings
Parameter
Conditions
Min
Max
Units
Supply Voltage
-0.5
+6.5
Vdc
Maximum Output Current
0
0.5
A
Power Dissipation
0.7
W
REFF Pin Current
To ground
0
500
uA
SD Pin current
To ground
0
20
uA
SD Pin Voltage
0
Vin+0.3V
V
Storage Temperature
-30
110
C
Operating Temperature
-30
85
C
DC Electrical Specification (-30C
T
A
+85C)
Parameter
Conditions
Min
Typ
Max
Units
Operating Voltage
2
6
Vdc
Output load Current
0
0.1
A
SD* open
1.8
2
2.5
mA
Quiescent Current
SD* connected to ground
60
75
uA
Regulated Output Voltage
R1*-infinite 2.75V<Vin<6V
2.700
2.750
V
Line Regulation
R1*-infinite 2.75V<Vin<6V Iout=0.1A
2
3
mV
Load Regulation
R1*-infinite 2.75V<Vin<6V
Iout=0..0.1A
1
1.5
mV
SD Current
SD* connected to ground
30
uA
SD Threshold Voltage
0.3
0.5
V
*See Fig.3
Determination of the Output Voltage:
Output Voltage
2.7V
3V
3.3V
5V
]
[
*
40
7
.
2
)
25
](
[
1
+
=
K
R
V
mV
V
V
OUT
R
1[K
]
N.C
130
68
18
Fig.2A - DC Voltage Regulation
Output Voltage Vs. Input Voltage
Fig.2B - DC Voltage Regulation
Output Voltage Vs. Load Current
AXV-002
PRELIMINARY
September 98
Page 3 of 4
98008-05-002-03.doc
IXYS Corporation 3540 Bassett Street, Santa Clara, CA 95054 TEL:408-982-0700 FAX:408-496-0670
IXYS Semiconductor, GmbH. Edisonstr. 15 D-68623 Lampertheim, Germany TEL:+49-6206-503-0 FAX:+49-6206-503-627
AC Electrical Specification (-30C
T
A
+85C)
Parameter
Conditions
Min
Typ
Max
Units
Attenuation* @ 0
I
LOAD
0.1
A Vdrop>5mV 0-3KHz
45
50
60
dB
Insertion Loss
20Hz
10KHz @ 50
55
60
dB
Output Impedance
10Hz
10
KHz
60
80
100
m
Line Transient Attenuation
Transient voltage less than 0.75V
35
40
dB
Transient Output Impedance
Idc=2A;
I=1A
70
110
m
* Maximum Input Noise Level [ p-p]= 1.8*Vdrop
Fig.4 - Load Transient Response
Fig.3 - Test Setup
AXV002
OUT
GND
IN
3
4
1
SD
5
REFF
2
SW
1
R
1
C
2
Load
V
OUT
C
1
A
A
V
V
V
A
V
IN
I
L
V
OUT
I
GND
I
SD
V
SD
+
-
Ein
Vripple
C1=C2=10uF
General Specifications
Fig.5 - Mechanical Drawing
Parameter
Units
Weight
4
gr.
Mechanical Measurements
mm
mm
Min
max
min
max
a
27.40
29.40
1.079
1.157
b
21.50
22.50
0.846
0.886
c
6.73
7.23
0.265
0.284
d
28.50
30.50
1.122
1.201
e
3.00
4.00
0.118
0.157
p
2.44
2.64
0.096
0.104
a
b
d
p
e
c
AXV-002
PRELIMINARY
September 98
Page 4 of 4
98008-05-002-03.doc
IXYS Corporation 3540 Bassett Street, Santa Clara, CA 95054 TEL:408-982-0700 FAX:408-496-0670
IXYS Semiconductor, GmbH. Edisonstr. 15 D-68623 Lampertheim, Germany TEL:+49-6206-503-0 FAX:+49-6206-503-627
Typical Applications
4 AA Cell to 5V
AXV002
OUT
GND
IN
3
4
1
SD
5
REFF
2
SW
1
R
1
C
2
V
OUT
=5V
C1
+Vin
LOAD
10uF
10uF
4 AA
Cell
Fig.6A
Recommended value for R
1 18K
5V to 2.7V
AXV002
OUT
GND
IN
3
4
1
SD
5
REFF
2
SW
1
V
OUT
=2.7V
C1
+Vin=5V
LOAD
10uF
10uF
NC
Fig.6B
Noise Sensitive Load
AXV002
OUT
GND
IN
3
4
1
SD
5
REFF
2
C
2
V
OUT
=5V
C1
+Vin
Noise
Sensitive
Load
10uF
10uF
V
Noisy
Power
Supply
R
1
NC
Fig.6C
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