AP1519
300KHz, 2A PWM Buck DC/DC Converter
Typical Performance Characteristics
AP1519 Efficiency v.s. Temperature
(Vin=12V,Vout=5V,Io=2A)
AP1519 Efficiency v.s. Temperature
(Vin=12V,Vout=3.3V,Io=2A)
86
85
84
83
82
81
80
79
78
77
76
75
81
80
79
78
77
76
75
74
73
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
AP1519 Saturation Voltage v.s. Temperature
(Vcc=12V,Vfb=0V,VSD=0)
AP1519 Switch Current Limit v.s. Temperature
(Vcc=12V,Vfb=0V)
1.4
5
4.5
4
1.3
1.2
2A
1.1
1A
1
3.5
3
0.5A
0.9
0.8
2.5
0.7
-50
-30
-10
10
30
50
70
90
-50
-25
0
25
50
75
100 125
Temperature (TA) (°C)
ꢀ
Temperature (TA) (°C)
AP1519 Supply Current v.s. Temperature
(Vcc=12V , No Load ,Von/off =0V(Switch ON) ,Von/off =5V(Switch OFF))
15
14
13
12
11
10
9
60
55
50
45
40
35
30
Switch OFF
8
Switch ON
7
6
5
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
-50 -30 -10 10 30 50 70 90 110 130 150
Temperature (TA) (°C)
Anachip Corp.
www.anachip.com.tw
Rev.1.0 Oct 5, 2004
6/9
ANACHIP [ ANACHIP CORP ]
