Diodes AP65550 - 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
IN
<18V 0
VREG5
<5mA 4.7 5.1 5.5 V
Source Current Capability — V
IN
=6V, V
VREG5
=4V — 110 — mA
Load Regulation — 0
VREG5
<5mA — — 60 mV
Line Regulation
—
6.0V
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