AP1604 Datasheet, PDF (3/7 Pages) Anachip Corp – PWM/PFM Dual Mode Step-down DC/DC Converter

PWM/PFM Dual Mode Step-down DC/DC Converter
AP1604
„ Electrical Characteristics
V_IN=5V, V_OUT＝2V, Load=300mA, Ta=25°C
Sym.
Parameter
Conditions
V_FB
V_IN
V_UVLO
FB
Input Voltage
Line Regulation
Load Regulation
UVLO Voltage（min.
operating voltage）
V_IN=2.2~5.5V, Load=10mA
I_OUT=10~800mA
V_CC, voltage required to maintain H at
V_OUT
I_CC Operating Current
I_CCQ Supply Current
I_STB Stand-by Current
I_CL Current Limit
Fosc Oscillator Frequency
MAXDTY Maximum Duty Ratio
CE/SS=V_IN, No Load
No external components,
CE/SS=V_IN, V_FB=1.2V
No external components,
CE/SS=0V, V_FB=0V
peak current
V_IN=5V, V_OUT=2V
Load=300mA, V_IN=5V, V_OUT=2V
PFMDTY PFM Duty Ratio
No load
V_CEH
V_CEL
EFFI
Rdson
CE/SS ”High” Voltage
Apply 1.4V (min.) to CE/SS, determine
V_OUT ”High”
CE/SS ”Low” Voltage Same as V_CEH, determine V_OUT/”Low”
Efficiency
V_CC=5V, V_OUT=3.3V, Load=300mA
Rdson Condition
I_OUT=300mA, V_IN=5V, V_OUT=2V
Min.
0.975
2.2
-
-
Typ.
1.0
-
-
-
Max.
1.025
5.5
0.12
1.2
Units
V
V
%
%
-
-
2
V
- 100 150 µA
-
90 120 µA
-
2
-
µA
800 1000 1200 mA
500 600 700 kHz
85 90
-
%
15 25 35
%
1.4
-
-
V
-
-
0.6
V
-
93
-
%
- 350 450 mΩ
„ Typical Performance Characteristics
Vcc v.s. Operating Current
200
180
160
140
120
100
80
60
40
20
0
2.5
3
3.5
4
4.5
5
5.5
Vcc (V)
Vcc v.s. Quiescent Current
200
180
160
140
120
100
80
60
40
20
0
2.5 3 3.5 4 4.5 5 5.5
Vcc (V)
Anachip Corp.
www.anachip.com.tw
Rev.1.1 Jun. 27, 2005
3/7