Diodes AP1507 - Manual (Page 5)

AP1507
150KHz, 3A PWM BUCK DC/DC CONVERTER
AP1507
Document number: DS31067 Rev. 3 - 2
5 of 12
www.diodes.com
May 2012
© Diodes Incorporated
Electrical Characteristics (All Output Voltage Versions)
Unless otherwise specified, V
IN
= 12V for 3.3V, 5V, adjustable version and V
IN
= 18V for the 12V version. I
LOAD
= 0.5A
Specifications with boldface type are for full operating temperature range, the other type are for T
J
= 25°C.
Symbol Parameter Conditions Min Typ Max Unit
I
FB Feedback Bias Current
V
FB
= 1.3V
( Adjustable Version Only )
-10
-50
nA
-100
F
OSC Oscillator Frequency
127 150 173
KHz
110 173
F
SCP
Oscillator Frequency of Short
Circuit Protect
When current limit Occurred and
V
FB
< 0.5V, T
A
= 25 o C
10 30 50 KHz
V
SAT
Saturation Voltage
I OUT = 3A
No Outside Circuit
V
FB
= 0V Force Driver On
1.4
1.6
V
1.7
DC
Max. Duty Cycle (ON) V
FB
= 0V Force Driver On 100
%
Min. Duty Cycle (OFF) V
FB
= 12V Force Driver Off 0
I
CL Current Limit
Peak Current
No Outside Circuit
V
FB
= 0V Force Driver On
3.6 4.5
5.5
A
6.5
I LEAK
Output = 0V
Output
leakage
current
No Outside Circuit
V
FB
=12V Force Driver Off
-200 µA
Output = -1V V
IN
= 22V -5 mA
I Q Quiescent Current V FB = 12V Force Driver Off 5 10 mA
I STBY
Standby Quiescent
Current
ON/OFF Pin = 5V
V IN = 22V
70
150
µA
200
V
IL ON/OFF Pin Logic Input Threshold
Voltage
Low (Regulator ON) -
1.3
0.6
V
V
IH
High (Regulator OFF) 2.0 -
I H ON/OFF Pin Logic Input Current V LOGIC = 2.5V (OFF) -0.01
µA
I
L
ON/OFF Pin Input Current V
LOGIC
= 0.5V (ON) -0.1 -1
θ
JA
Thermal Resistance TO252-5L Junction to Case 10 o C/W
θ
JC
Thermal Resistance
with copper area of approximately
2cm ×2cm
TO252-5L
Junction to
Ambient
50 o C/W