Electrical characteristics – Diodes AP65550 User Manual
Page 4
AP65550
Document number: DS36336 Rev. 2 - 2
4 of 14
www.diodes.com
April 2014
© Diodes Incorporated
AP65550
Electrical Characteristics
(@T
A
= +25°C, V
IN
= 12V, unless otherwise specified.)
Parameter
Symbol
Conditions
Min
Typ
Max
Unit
SUPPLY VOLTAGE (VIN PIN)
Input Voltage
V
IN
—
4.5
—
18
V
Quiescent Current
I
Q
V
FB
=0.85V
—
0.9
—
mA
Shutdown Supply Current
I
SHDN
V
EN
=0V
—
3.6
10
μA
UNDER VOLTAGE LOCKOUT
UVLO Threshold
V
UVLO
V
IN
Rising Test VREG5
Voltage
3.45
3.75
4.05
V
UVLO Hysteresis
V
HYS
V
IN
Falling Test VREG5
Voltage
0.19
0.32
0.45
V
ENABLE (EN PIN)
EN High-level Input Voltage
V
ENH
—
1.9
—
—
V
EN Low-level Input Voltage
V
ENL
—
—
—
0.6
V
VOLTAGE REFERENCE (FB PIN)
Feedback Voltage
V
FB
V
OUT
=1.05V
0.753
0.765
0.777
V
Feedback Bias Current
I
FB
V
FB
=0.8V
-0.1
0
0.1
μA
VREG5 OUTPUT
VREG5 Output Voltage
V
VREG5
6.0V<V
IN
<18V 0<I
VREG5
<5mA
4.7
5.1
5.5
V
Source Current Capability
—
V
IN
=6V, V
VREG5
=4V
—
110
—
mA
Load Regulation
—
0<I
VREG5
<5mA
—
—
60
mV
Line Regulation
—
6.0V<VIN<18V I
VREG5
=5mA
—
—
20
mV
MOSFET
High-side Switch On-resistance
R
DSONH
—
—
0.065
—
Ω
Low-side Switch On-resistance
R
DSONL
—
—
0.036
—
Ω
CURRENT LIMIT
High Level Current Limit
I
LIM-H
L=1.5μH
5.6
6.4
7.9
A
ON-TIME TIMER
On Time
t
ON
V
IN
=12V, VOUT=1.05V
—
150
—
ns
Minimum Off Time
t
OFF-MIN
V
FB
=0.7V
—
260
310
ns
THERMAL SHUTDOWN
Thermal Shutdown
T
OTSD
—
—
+160
—
°C
Thermal Shutdown Hysteresis
T
HYS
—
—
+30
—
°C
SOFT START (SS PIN)
Soft-start Source Current
I
SS-SOURCE
V
SS
=1V
4.2
6.0
7.8
μA
Soft-start Discharge Current
I
SS-DISCHARGE
V
SS
=0.5V
0.1
0.2
—
mA