Diodes AP2552/ AP2553/ AP2552A/ AP2553A - Manual (Page 5)

AP2552/AP2553/AP2552A/AP2553A
Document number: DS35404 Rev. 8 - 2
5 of 16
www.diodes.com
February 2014
© Diodes Incorporated
AP2552/ AP2553/ AP2552A/ AP2553A
Electrical Characteristics
(@T
A
= +25°C, V
IN
= 2.7V to 5.5V, V
EN
= 0V or V
EN
= V
IN
, R
FAULT
= 10kΩ, unless otherwise specified.)
Symbol Parameter Test Conditions (Note 7) Min Typ Max Unit
Supply
V
UVLO
Input UVLO V
IN
rising  2.4 2.65 V
V
UVLO
Input UVLO Hysteresis V
IN
decreasing  25  mV
I
SHDN
Input Shutdown Current V
IN
= 5.5V, disabled, OUT = open  0.1 1 µA
I
Q
Input Quiescent Current
V
IN
= 5.5V, enabled, OUT = open, R
LIM
= 20kΩ  100 140 µA
V
IN
= 5.5V, enabled, OUT = open, R
LIM
= 210kΩ  80 120 µA
I
REV
Reverse Leakage Current Disabled, V
IN
= 0V, V
OUT
= 5.5V, I
REV
at V
IN
 0.01 1 µA
Power Switch
R
DS(ON)
Switch On-Resistance
SOT26 package,
T
J
= +25°C, V
IN
= 5.0V  70 95
mΩ
-40°C ≤ T
A
≤ +85°C   135
U-DFN2020-6 package
T
J
= +25°C, V
IN
= 5.0V  80 105
-40°C ≤ T
A
≤ +85°C   150
t
R
Output Turn-On Rise Time
V
IN
= 5.5V, C
L
= 1µF, R
LOAD
= 100Ω. See Figure 1  1.1 1.5 ms
V
IN
= 2.7V, C
L
= 1µF, R
LOAD
= 100Ω.  0.7 1 ms
t
F
Output Turn-Off Fall Time
V
IN
= 5.5V, C
L
= 1µF, R
LOAD
= 100Ω. See Figure 1 0.1  0.5 ms
V
IN
= 2.7V, C
L
= 1µF, R
LOAD
= 100Ω. 0.1  0.5 ms
Current Limit
I
LIMIT
Current-Limit Threshold
(maximum DC output current),
V
OUT
= V
IN
-0.5V
R
LIM
= 10kΩ -40°C ≤ T
A
≤ +85°C 2200 2365 2542
mA
R
LIM
= 15kΩ -40°C ≤ T
A
≤ +85°C 1540 1632 1730
R
LIM
= 20kΩ
T
J
= +25°C 1180 1251 1326
-40°C ≤ T
A
≤ +85°C 1160 1251 1340
R
LIM
= 49.9kΩ
T
J
= +25°C 500 530 562
-40°C ≤ T
A
≤ +85°C 485 529 573
R
LIM
= 210kΩ 121 142 162
I
LIM
shorted to IN or GND 50 75 100
I
SHORT
Short-Circuit Current Limit, OUT
Connected to GND
R
LIM
= 10kΩ  2620 
mA
R
LIM
= 15kΩ  1820 
R
LIM
= 20kΩ  1380 
R
LIM
= 49.9kΩ  570 
R
LIM
= 210kΩ  150 
I
LIM
shorted to IN or GND  75 
t
SHORT
Short-Circuit Response Time
V
OUT
= 0V to I
OUT
= I
LIMIT
(OUT shorted to ground)
See Figure 2
 2  µs
Enable Pin
I
LEAK-EN
EN Input Leakage Current V
IN
= 5V, V
EN
= 0V and 6V -0.5  0.5 µA
t
ON
Turn-On Time C
L
= 1µF, R
L
= 100Ω. See Figure 1   3 ms
t
OFF
Turn-Off Time C
L
= 1µF, R
L
= 100Ω. See Figure 1   1 ms
Output Discharge
R
DIS
Discharge Resistance (Note 8) V
IN
= 5V, disabled, I
OUT
=1mA  600  Ω
R
DIS_LATCH
Discharge Resistance During
Latch-Off
V
IN
= 5V, latch-off, AP2552A/53A only  1000  Ω
Notes: 7. Pulse-testing techniques maintain junction temperature close to ambient temperature; thermal effects must be taken into account separately.
8. The discharge function is active when the device is disabled (when enable is de-asserted or during power-up power-down when V
IN
< V
UVLO
).
The discharge function offers a resistive discharge path for the external storage capacitor for limited time.