AP7217A Datasheet, PDF (8/10 Pages) Diodes Incorporated – 3.3V 600mA CMOS LDO

AP7217A
3.3V 600mA CMOS LDO
Application Note (Continued)
Vin
Iin
IN
OUT
AP7217A
C
GND
Iq
Iout Vout
Co
ESR
Current Limit Protection
When output current at OUT pin is higher than current limit
threshold, the current limit protection will be triggered and clamp
the output current to approximately 750mA to prevent
over-current and to protect the regulator from damage due to
overheating.
Short circuit protection
When VR_OUT pin is shorted to GND or VR_OUT voltage is less than
200mV, short circuit protection will be triggered and clamp the
output current to approximately 50mA.
VD_OUT (reset output)
---Open-Drain Active-Low reset output---
In general, VD_OUT is pulled up by a resistor (100Kohm) to V_IN.
The AP7217A microprocess (uP) supervisory circuitry asserts a
guaranteed logic-low reset during power-up and power-down.
Reset is asserted asserts when V_IN is below the reset threshold
and remain asserted for at least t_RP after V_IN rises above the reset
threshold.
As long as V_IN is lower than the reset threshold, VD_OUT remains at
logic "0". When V_IN become higher than V_TH, a logic "1" is
asserted after a time delay defined by t_RP.
Marking Information
(1) SOP-8L
Logo
Part No.
(2) SOP-8L-EP
Logo
Part No.
( Top View )
8
5
7217A-33
YY WW X X
1
4
G : Green
Internal code
Xth week : 01~52
Year : "07" = 2007
"08" = 2008
( Top View )
8
5
7217A-33
YY WW X X E
1
4
G : Green
E : SOP-8L-EP
Internal code
Xth week : 01~52
Year : "07" = 2007
"08" = 2008
AP7217A Rev. 1
8 of 10
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APRIL 2008
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