ame1300 AME, Inc., ame1300 Datasheet - Page 8

• Manufacturer Part Number: ame1300
• Description: 300ma Cmos Ldo With Reset Function
• Manufacturer: AME, Inc.

AME1300
n Enable
shuts off, and all internal circuits are powered down. In
this state, the quiescent current is less than 10 A. This
pin behaves much like an electronic switch.
RESETB Output
of V
maintained active for a minimum of 140msec after V
rises above the reset threshold. The AME1300 has an
active-low RESETB output. The output of the AME1300
is guaranteed vaild down to V
reject fast transient glitches on the V
n External Capacitors
ground of 2.2 F or greater. Ceramic capacitors have the
lowest ESR, and will offer the best AC performance. Con-
versely, Aluminum Electrolytic capacitors exhibit the high-
est ESR, resulting in the poorest AC response. Unfortu-
nately, large value ceramic capacitors are comparatively
expensive. One option is to parallel a 0.1 F ceramic ca-
pacitor with a 10 F Aluminum Electrolytic. The benefit
is low ESR, high capacitance, and low overall cost.
put and ground to stabilize Vin. The input capacitor should
be at least 0.1 F to have a beneficial effect.
PASS pin and GND. This capacitor can be a low cost
Polyester Film variety between the value of 0.001~0.01 F.
A larger capacitor improves the AC ripple rejection,but
also makes the output come slowly. This“Soft” turn-on
is desirable in some applications to limit turn-on surges.
the pins. A “Quiet” ground termination is desirable. This
can be achieved with a “Star” connection.
8
When actively pulled low, the PMOS pass transistor
The RESETB output is driven active low within 40 sec
The AME1300 is stable with an output capacitor to
A second capacitor is recommended between the in-
A third capacitor can be connected between the BY-
All capacitors should be placed in close proximity to
DET
falling through the reset threshold.RESETB is
AME, Inc.
DET
= 1V and is optimized to
DET
line.
DET
300mA CMOS LDO with
RESET Function
Rev.C.01