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: