A6300ACSO8A [ETC]
High Efficiency Linear Power Supply; 高效率线性电源
| 型号： | A6300ACSO8A |
| 厂家： | 
ETC |
| 描述： | High Efficiency Linear Power Supply |
| 文件： | 总8页 (文件大小：197K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
EM MICROELECTRONIC-MARIN SA
A6300
High Efficiency Linear Power Supply with
Power Surveillance and Time-out
Features
Typical Operating Configuration
Supply voltage monitoring
Highly accurate 5 V, 100 mA guaranteed output
Low dropout voltage, typically 380 mV at 100 mA
Low quiescent current, typically 100 µA
Standby mode, maximum current 310 µA (with
100 µA load on OUTPUT)
Unregulated DC input can withstand –20 V reverse
battery and + 60 V power transients
Fully operational for unregulated DC input voltage
up to 26 V and regulated output voltage down to 1 V
Reset output guaranteed for regulated output voltage
down to 1 V
For Open drain version:
Unregulated
Voltage
Regulated
Voltage
5 V
INPUT OUTPUT
A6300
No reverse output current
Very low temperature coefficient for the regulated output
Current limiting
Clear microprocessor restart after power up
Push-pull or Open drain output
-40 to +85 °C temperature range
DIP8 and SO8 packages
RES
VSS
VSS
Description
The A6300 offers a high level of integration by combining
voltage regulation and voltage monitoring. The voltage
regulator has a low dropout ( typ. 380 mV at 100 mA )
and a low quiescent current (100 µA). The quiescent
current increases only slightly in dropout prolonging
battery life. Built-in protection includes a positive transient
absorber for up to 60 V (load dump) and the ability to
survive an unregulated input voltage of –20 V (reverse
battery). The INPUT may be connected to ground or a
reverse voltage without reverse current flow from the
OUTPUT to the INPUT. Upon the OUTPUT voltage rising
above VTH, the reset output, whether RES or RES, will
remain active (RES = 1, RES = 0) for an additional time
of 50 ms. This allows the system voltage and the
oscillator of the microprocessor to stabilize before they
becomes fully active. When VOUTPUT falls below VTH, the
reset output goes active. Threshold voltage can be
obtained in different versions: 2 V, 2.4 V, 2.8 V, 3.5 V, 4 V.
Fig. 1
Pin Assignment
DIP8/ SO8
RES or RES
VSS
N.C.
OUTPUT
INPUT
N.C.
A6300
N.C.
Applications
N.C.
White / brown goods
Industrial electronics
Automotive electronics
Cellular telephones
Security systems
Battery powered products
High efficiency linear power supplies
Fig. 2
1
A6300
Absolute Maximum Ratings
Operating Conditions
Parameter
Symbol
Conditions
Parameter
Symbol Min. Typ. Max. Units
Continuous voltage at INPUT
to VSS
Operating junction
temperature 1)
VINPUT
- 0.3 to + 30 V
TJ
VINPUT
VOUTPUT
-40
2.3
1.0
1.0
+125 °C
Transients on INPUT for
t < 100 ms and duty cycle 1%
Reverse supply voltage on INPUT
Max. voltage at any signal pin
Min. voltage at any signal pin
Storage temperature
Electrostatic discharge max. to
MIL-STD-883C method 3015
Max. soldering conditions
INPUT voltage 2)
OUTPUT voltage 2)3)
26
V
VTRANS
VREV
VMAX
VMIN
up to + 60 V
- 20 V
OUTPUT + 0.3 V
VSS – 0.3 V
V
V
Reset output guaranteed VOUTPUT
OUTPUT current 4)
Thermal resistance from
junction to ambient 5)
- DIP8
IOUTPUT
100
mA
TSTO
- 65 to + 150 °C
Rth(j-a)
Rth(j-a)
105 °C/W
160 °C/W
VSmax
TSmax
1000 V
250 °C x 10 s
- SO8
Table 2
Table 1
1) The maximum operating temperature is confirmed by
sampling at initial device qualification. In
Stresses above these listed maximum ratings may
cause permanent damage to the device. Exposure be-
yond specified operating conditions may affect device
reliability or cause malfunction.
production, all devices are tested at + 85 °C.
2) Full operation quaranteed. To achieve the load regu-
lation specified in Table
3 a 22 µF capacitor or
greater is required on the INPUT, see Fig. 6. The 22
µF must have an effective resistance ≤ 5 Ω and a
resonant frequency above 500 kHz.
Handling Procedures
3) A 10 µF load capacitor and a 100 nF decoupling capa-
citor are required on the regulator OUTPUT for
stability. The 10 µF must have an effective series
resistance of ≤ 5 Ω and a resonant frequency above 500
kHz.
This device has built-in protection against high static
voltages or electric fields; however, anti-static precau-
tions must be taken as for any other CMOS component.
Unless otherwise specified, proper operation can only
occur when all terminal voltages are kept within the
supply voltage range. Unused inputs must always be
tied to a defined logic voltage level.
4) The OUTPUT current will not apply for all possible
combinations of input voltage and output current.
Combinations that would require the A6300 to work
above the maximum junction temperature (+125 °C )
must be avoided.
5) The
package is soldered to a PCB.
thermal
resistance
specified assumes the
2
A6300
Electrical Characteristics
VINPUT = 6.0 V, CL = 10 µF + 100 nF, CINPUT = 22 µF, TJ = -40 to +85 °C, unless otherwise specified
Parameter
Symbol Test Conditions
Min.
Min.
Typ.
Max. Max. Unit
25°C
25°C
Supply current
ISS
ISS
Reset output open, IL = 100 µA
Reset output open, IL = 100 mA
at VINPUT = 8.0 V
IL = 100 µA
100 µA ≤ IL ≤ 100 mA,
-40 °C ≤ TJ ≤+125 °C
100
1.7
310
µA
Supply current 1)
4.2
5.12
mA
V
Output voltage
Output voltage
VOUTPUT
VOUTPUT
4.88
4.85
5.15
V
Output voltage temperature
coefficient 2)
Vth(coeff)
VLINE
50
180 ppm/°C
Line regulation 3)
6 V ≤ VINPUT ≤26 V, IL = 1 mA,
TJ = +125 °C
0.2
0.2
40
0.5
0.6
%
%
Load regulation 3)
Dropout voltage 4)
Dropout voltage 4)
Dropout voltage 4)
VL
100 µA ≤ IL ≤ 100 mA
VDROPOUT IL = 100 µA
VDROPOUT IL = 100 mA
VDROPOUT IL = 100 mA,
170
mV
mV
380
-40 °C ≤ TJ ≤+125 °C
650
1.6
mV
mA
Dropout supply current
Thermal regulation 5)
ISS
Vthr
VINPUT = 4.5 V, IL = 100 µA 8)
TJ = +25 °C, IL = 50 mA,
VINPUT = 26 V, T = 10 ms
OUTPUT tied to VSS
1.2
0.05
450
0.25
%/W
mA
Current limit
ILmax
OUTPUT noise, 10Hz to
100 kHz
Threshold voltage
VNOISE
VTH
VTH
VTH
VTH
VTH
VHYS
VOL
VOL
VOL
200
1.95
2.32
2.73
3.42
3.88
25
175
140
20
µVrms
V
Version: AA, AG, AM
Version: AB, AH, AN
Version: AC, AI, AO
Version: AD, AJ, AP
Version: AE, AK, AQ
1.77
2.09
2.48
3.11
3.55
1.84
2.18
2.59
3.23
3.70
2.04
2.41
2.86
3.59
4.08
2.17
2.55
3.03
3.80
4.32
V
V
V
V
mV
mV
mV
mV
V
V
mV
µA
Threshold hysteresis
RES Output Low Level
VOUTPUT = 5 V, IOL = 8 mA
VOUTPUT = 3 V, IOL = 4 mA
VOUTPUT = 1 V, IOL = 50 µA
VOUTPUT = 5 V, IOH =- 8 mA
VOUTPUT = 3 V, IOH = -4 mA
VOUTPUT = 1 V, IOH = -100 µA
VOUTPUT = 5 V
400
300
90
RES Output High Level 7)
Leakage current 6)
VOH
VOH
VOH
ILEAK
4.3
2.3
850
4.5
2.6
950
0.05
1
Table 3
1
) If INPUT is connected to VSS , no reverse current will flow from the OUTPUT to the INPUT, however the supply current specified
will be sank by the OUTPUT to supply the A6300.
2) The OUTPUT voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.
3) Regulation is measured at constant junction temperature using pulse testing with a low duty cycle. Changes in OUTPUT voltage
due to heating effects are covered in the specification for thermal regulation.
4) The dropout voltage is defined as the INPUT to OUTPUT differential, measured with the input voltage equal to 5.0 V.
5) Thermal regulation is defined as the change in OUTPUT voltage at a time T after a change in power dissipation is applied,
excluding load or line regulation effects.
6) Only for open drain versions.
7) For push-pull output only
8) Reset output open
3
A6300
Timing Characteristics
V OUTPUT = 5.0 V, CL = 10 µF + 100 nF, CINPUT = 22 µF, TJ = -40 to + 85 °C, unless otherwise specified
Parameter
Symbol Test Conditions
Min.
Typ.
Max.
Units
Power-on Reset time
Sensitivity 1)
tPOR
tSEN
tR
25
20
22
50
0.8*tR
75
75
ms
µs
µs
VOUTPUT = 5 V to 3 V in 5 µs
VOUTPUT = 5 V to 3 V in 5 µs
Propagation time 1)
200
1) Tested on version with VTH higher than 3 V
Table 4
Timing Waveforms
Voltage Monitoring
tSEN
VOUTPUT
VTH
1 V
t
RES
tPOR
tR
tPOR
Logic”1”
Logic”0”
Logic”1”
Logic”0”
t
RES
t
Fig.3
Block Diagram
Voltage
Regulator
OUTPUT
INPUT
Voltage
Voltage
Reference
Reference
RES
or
RES
Reset
Logic
VIN
Timer
Oscillator
VSS
Fig. 4
4
A6300
Pin Description
The A6300 will remain stable and in regulation with no
external load and the dropout voltage is typically con-
stant as the input voltage fall to below its minimum level
(see Table 2). These features are especially important in
CMOS RAM keep-alive applications.
Pin Name
Function
1
2
3
4
5
6
7
8
RES or RES Reset output
VSS
N.C.
N.C.
Supply ground
Not connected
Not connected
Not connected
Unregulated positive supply
Regulated output
Not connected
N.C.
Voltage Monitoring
INPUT
OUTPUT
N.C.
The power-on reset and the power-down reset are gene-
rated internally with a voltage comparison of the voltage
reference and the resistor divider (see Fig.4).
Table 5
At power-up the reset output (RES) is held low (see
Fig. 3). After OUTPUT reaches V TH, the RES output is
held low for an additional power-on-reset (POR) delay
tPOR
(typically 50 ms ).The power-on reset delay
Functional Description
prevents repeated toggling of RES even if VOUTPUT and
the INPUT voltage drops out and recovers. The POR
delay allows the microprocessor’s crystal oscillator time
to stabilize and to ensure correct recognition of the reset
signal to the microprocessor.
Voltage Regulator
The A6300 has a 5 V
2%, 100 mA, low dropout volt-
age regulator. The low supply current (typ.100 µA) mak-
es the A6300 particularly suited to automotive systems
then remain energized 24 hours a day. The input voltage
range is 2.3 V to 26 V for operation and the input protec-
tion includes both reverse battery ( 20 V below ground)
and load dump (positive transients up to 60 V). There is
no reverse current flow from the OUTPUT to the INPUT
when the INPUT equals VSS .This feature is important for
systems which need to implement (with capacitance) a
minimum power supply hold-up time in the event of
power failure. To achieve good load regulation a 22 µF
capacitor (or greater ) is needed on the INPUT (see
Fig. 5). Tantalum or aluminium electrolytics are adequate for
the 22 µF capacitor; film types will work but are relatively
expensive. Many aluminium electrolytics have electroly-
tes that freeze at about –30 °C, so tantalums are
recommended for operation below –25 °C. The important
parameters of the 22 µF capacitor are an effective series
resistance of ≤ 5 Ω and a resonant frequency above
500 kHz.
The RES output goes active low generating the power-
down reset whenever VOUTPUT falls below VTH. The sensi-
tivity or reaction time of the internal comparator to the
voltage level on VIN is typically 70 µs.
Temperature Consideration
Care must be taken not to exceed the maximum junction
temperature (+ 125 °C). The power dissipation within
the A6300 is given by the formula:
TTOTAL = (VINPUT – VOUTPUT) * IOUTPUT + (VINPUT) * ISS
The maximum continuous power dissipation at a given
temperature can be calculated using the formula:
P
max = ( 125 °C – TA) / Rth(j-a)
where Rth(j-a) is the termal resistance from the junction
to the ambient and is specified in Table 2. Note the Rth(j-a)
given in Table 2 assumes that the package is soldered
to a PCB. The above formula for maximum power dissi-
pation assumes a constant load(i.e. ≥ 100 s). The tran-
sient thermal resistance for a single pulse is much lower
than the continuous value. For example the A6300 in
DIP8 package will have an effective thermal resistance
from the junction to the ambient of about 10 °C/W for
a single 100 ms pulse.
A 10 µF capacitor (or greater) and a 100 nF capacitor
are required on the OUTPUT to prevent oscillations due
to instability. The specification of the 10 µF capacitor is
as per the 22 µF capacitor on the INPUT (see previous
paragraph).
5
A6300
OUTPUT Current versus INPUT Voltage
SO8 package
soldered
to PC board
TJmax = +125 °C
100
80
60
TA=+50°C
TA=+25 °C
40
TA=+85 °C
20
0
0
5
10
15
20
25
30
INPUT voltage [V]
Fig.5
Typical Application
Open drain version:
Unregulated
Voltage
Regulated
Voltage
5 V
INPUT OUTPUT
100 nF 10 µF
A6300
100 kΩ
µP
RES
VSS
RES
22 µF
VSS
Fig. 6
6
A6300
Package Information
Dimensions of 8-Pin SOIC Package
E
D
C
0 - 8°
A
A1
B
L
e
H
Dimensions in mm
Min Nom Max
1.35 1.63 1.75
A
A1 0.10 0.15 0.25
4
5
3
2
7
B
C
D
E
e
0.33 0.41 0.51
0.19 0.20 0.25
4.80 4.94 5.00
3.80 3.94 4.00
1.27
5.80 5.99 6.20
0.40 0.64 1.27
6
8
H
L
Fig. 7
Dimensions of 8-Pin Plastic DIP Package
A1 A2
A
C
L
eA
eB
b3
e
b2
Dimensions in mm
Min. Nom. Max.
5.33
b
Min. Nom. Max.
9.01 9.27 10.16
7.62 7.87 8.25
A
D
E
A1 0.38
A2 2.92 3.30 4.95
0.35 0.45 0.56
b2 1.14 1.52 1.78
b3 0.76 0.99 1.14
E1 6.09 6.35 7.11
4
3
2
1
b
e
2.54
7.62
eA
eB
L
E1
E
10.92
C
0.20 0.25 0.35
2.92 3.30 3.81
5
6
7
8
Fig. 8
7
A6300
Ordering Information
.
Part Number:
A6300 AQ SO8A
Threshold Voltage & Output Type
Package & Delivery Form
SO8B = 8-pin SOIC, Tape & Reel
SO8A = 8-pin SOIC, Stick
DL8A = 8-pin plastic DIP, Stick
2.0V 2.4V 2.8V 3.5V 4.0V
AA* AB* AC* AD* AE*
Push-pull, Reset active high AG* AH* AI* AJ* AK*
Open drain, Reset active low AM* AN* AO* AP AQ
Table 6
Push-pull, Reset active low
*= non stock item. Might be available on request and upon
minimum order quantity (please contact EM Microelectronic).
When ordering, please specify the complete Part Number without space between letters: e.g. A6300AQSO8A,
A6300APSO8B, etc
Package Marking
Part Number
(first line)
A6300%%SO8A
A6300%%SO8B
A6300%%DL8A
6300%%
6300%%
6300%%
Where %% refers to the 2 letters for the threshold voltage in Table 6 (AP, AQ, etc.)..
EM Microelectronic-Marin SA cannot assume any responsibility for use of any circuitry described other than entirely
embodied in an EM Microelectronic-Marin SA product. EM Microelectronic-Marin SA reserves the right to change the
circuitry and specifications without notice at any time. You are strongly urged to ensure that the information given
has not been superseded by a more up-to-date version.
© 2002 EM Microelectronic-Marin SA, 03/02, Rev. F/465
EM Microelectronic-Marin SA, CH - 2074 Marin, Switzerland, Tel. +41 – (0)32 75 55 111, Fax +41 – (0)32 75 55 403
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