Diodes AP65503 - Manual (Page 4)

AP65503
Document number: DS37127 Rev. 1 - 2
4 of 15
www.diodes.com
April 2014
© Diodes Incorporated
AP65503
Electrical Characteristics
(@T
A
= +25°C, V
IN
= 12V, unless otherwise specified.)
Symbol Parameter Test Conditions Min Typ Max Unit
I
SHDN
Shutdown Supply Current V
EN
= 0V — 0.3 3.0 µA
I
Q
Supply Current (Quiescent) V
EN
= 2.0V, V
FB
= 1.0V — 0.3 1.5 mA
R
DS(ON)1
High-Side Switch On-Resistance (Note 8) — — 80 — mΩ
R
DS(ON)2
Low-Side Switch On-Resistance (Note 8) — — 32 — mΩ
I
LIMIT
HS Current Limit Minimum duty cycle — 7 — A
I
LIMIT
LS Current Limit From Drain to Source — 0.9 — A
High-Side Switch Leakage Current V
EN
= 0V, V
SW
= 0V, V
SW
=12V — 0 10 μA
AVEA
Error Amplifier Voltage Gain
(Note 8)
— — 800 — V/V
GEA Error Amplifier Transconductance ∆I
C
= ±10µA — 1000 — µA/V
GCS
COMP to Current Sense
Transconductance
— — 2.8 — A/V
F
SW
Oscillator Frequency V
FB
= 0.75V 660 750 840 kHz
F
FB
Fold-back Frequency V
FB
= 0V — 0.30 — f
SW
D
MAX
Maximum Duty Cycle V
FB
= 800mV — 90 — %
T
ON
Minimum On Time — — 160 — ns
V
FB
Feedback Voltage T
A
= -40°C to +85°C — 800 — mV
Feedback Overvoltage Threshold — — 1.0 — V
V
EN_RISING
EN Rising Threshold — 0.7 0.8 1.2 V
EN Lockout Threshold Voltage — 2.2 2.5 2.7 V
EN Lockout Hysteresis — — 220 — mV
INUV
VTH
V
IN
Under Voltage Threshold Rising — 3.80 4.05 4.40 V
INUV
HYS
V
IN
Under Voltage Threshold Hysteresis — — 250 — mV
Soft-Start Current V
SS
= 0V — 6 — μA
Soft-Start Period C
SS
= 0.1µF — 13 — ms
T
SD
Thermal Shutdown (Note 8) — — 160 — °C
Note: 8. Guaranteed by design