Ap1605, Electrical characteristics, Pwm/pfm dual-mode step-down switching regulator – Diodes AP1605 User Manual
Page 4

AP1605
PWM/PFM DUAL-MODE STEP-DOWN SWITCHING
REGULATOR
AP1605 Rev. 2
4 of 8
FEBRUARY 2009
©
Diodes Incorporated
Electrical Characteristics
(V
IN
= 5V, T
A
= 25°C, unless otherwise specified)
Symbol
Parameter
Conditions
Min.
Typ.
Max.
Unit
V
IN
Input Voltage
AP1605 Series
2.5
--
7
V
V
REF
Internal Reference Voltage
1.1625
1.2
1.2375
V
V
UVLO
UVLO Voltage
Voltage required to maintain V
OUT
-- -- 2.2
V
MAXDTY Maximum Duty Ratio
100
--
--
%
PFMDTY PFM Duty Ratio
15
25
35
%
I
SW
Switch Current
Duty = 50%
3
--
--
A
I
SS
Current Consumption
POWER
ON
V
OUT
= 2.5V
--
35
100
µA
I
SSS
Current Consumption
During Power Off
V
ON/OFF
= 0V
--
--
2
µA
∆V
OUT1
Line Regulation
2.5V~7V @ I
OUT
= 0.1A
--
0.2
0.5
%
∆V
OUT2
Load
Regulation
0.1A~3A
--
1
1.5
%
F
OSC
Oscillation
Frequency
220 300 380
KHz
V
CEH
CE Pin “High” Voltage
Evaluate oscillation at SW pin
0.65
--
--
*Vcc
V
CEL
CE
Pin
“Low”
Voltage
Evaluate oscillation stop at SW
pin
-- -- 0.2
I
SH
Power-Off Pin Input
Leakage Current
-- -0.1
--
0.1
µA
I
SL
--
-0.1
--
0.1
µA
EFFI Efficiency
V
IN
= 5V, V
OUT
= 2.5V I
OUT
= 1A
--
93
--
%