AME1300CEQA280Z datasheet(8/12 Pages) AME

Part #	AME1300CEQA280Z

Description	300mA CMOS LDO with RESET Function

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Manufacturer	AME [Analog Microelectronics]

Direct Link	http://www.ame.com.tw/

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AME

8

300mA CMOS LDO with

RESET Function

AME1300

Rev.C.02

When actively pulled low, the PMOS pass transistor

shuts off, and all internal circuits are powered down. In

this state, the quiescent current is less than 10

µA. This

pin behaves much like an electronic switch.

RESETB Output

The RESETB output is driven active low within 40

µsec

of V

DET falling through the reset threshold.RESETB is

maintained active for a minimum of 140msec after V

DET

rises above the reset threshold. The AME1300 has an

active-low RESETB output. The output of the AME1300

is guaranteed vaild down to V

DET = 1V and is optimized to

reject fast transient glitches on the V

DET line.

The AME1300 is stable with an output capacitor to

ground of 2.2

µF 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

µF ceramic ca-

pacitor with a 10

µF Aluminum Electrolytic. The benefit is

low ESR, high capacitance, and low overall cost.

A second capacitor is recommended between the in-

put and ground to stabilize Vin. The input capacitor should

be at least 0.1

µF to have a beneficial effect.

A third capacitor can be connected between the BY-

PASS pin and GND. This capacitor can be a low cost

Polyester Film variety between the value of 0.001~0.01

µF.

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.

All capacitors should be placed in close proximity to

the pins. A

“Quiet” ground termination is desirable. This

can be achieved with a

“Star” connection.

n External Capacitors

n Enable

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AME1300CEQA280Z Datasheet(PDF) 8 Page - Analog Microelectronics

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