AP1519
300KHz, 2A PWM Buck DC/DC Converter
Typical Performance Characteristics (Continued)
AP1519 Threshold Voltage v.s. Temperature
(Vcc=12V , Io=100mA)
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1
0.9
0.8
-50 -30 -10 10
30
50
70
90 110 130 150
AP1519 ON/OFF Current v.s. ON/OFF Voltage
(Vin=12V)
10
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0
3
6
9
12
15
18
21
Threshold Voltage (V)
Temperature (TA) (°C)
ON/OFF Current (nA)
ON/OFF Voltage (V)
AP1519 Frequency v.s. Temperature
(Vcc=12V , Io=500mA ,Vout=5V)
320
AP1519 Feedback Current v.s. Temperature
(Vcc=12V , Vout=5V,Vfb=0.8V)
10
Frequency (KHz)
300
290
280
270
260
-50 -30 -10 10
30
50
70
90 110 130 150
Feedback Current (nA)
310
0
-10
-20
-30
-40
-50
-50 -30 -10 10
30
50
70
90 110 130 150
Temperature (TA) (°C)
Temperature (TA) (°C)
AP1519 Output Voltage v.s. Temperature
(Vin=12V ,Io=2A)
3.5
3.45
3.4
3.35
3.3
3.25
3.2
3.15
3.1
3.05
3
2.95
2.9
-40 -20
Vout (V)
Temperature (TA) (°C)
0
20
40
60
80 100 120 140 160
Anachip Corp.
www.anachip.com.tw
Rev.1.0 Oct 5, 2004
7/9
ANACHIP [ ANACHIP CORP ]
