1
EM MICROELECTRONIC-MARIN SA
A6300
High Efficiency Linear Power Supply with
Power Surveillance and Time-out
Features
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
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
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 V
TH, 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 V
OUTPUT
falls below V
TH, 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.
Applications
White / brown goods
Industrial electronics
Automotive electronics
Cellular telephones
Security systems
Battery powered products
High efficiency linear power supplies
Typical Operating Configuration
Pin Assignment
DIP8/ SO8
OUTPUT
Fig. 2
N.C.
N.C.
INPUT
A6300
RES or RES
V
SS
N.C.
N.C.
5 V
Fig. 1
RES
V
SS
INPUT OUTPUT
A6300
Unregulated
Voltage
V
SS
Regulated
Voltage
For Open drain version:
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