ap1509-s Diodes, Inc., ap1509-s Datasheet - Page 7

• Manufacturer Part Number: ap1509-s
• Description: 150khz, 2a Pwm Buck Dc/dc Converter
• Manufacturer: Diodes, Inc.

Typical Performance Characteristics
AP1509 Rev. 2
AP1509 Efficiency vs. Temperature (Vin=12V,
AP1509 Saturation Voltage vs. Temperature
15
14
13
12
11
10
1.4
1.3
1.2
1.1
0.9
0.8
0.7
9
8
7
6
5
1
-50 -30 -10 10
86
85
84
83
82
81
80
79
78
77
76
75
-50
-50 -30 -10 10 30 50 70 90 110 130 150
(Vcc=12V, Vfb=0V, VSD=0)
-25
(Vcc=12V, No Load, Von/off =0V(Switch ON) ,Von/off =5V(Switch OFF))
Temperature (TA) (°C)
Temperature (TA) (°C)
Vout=5V, Io=2A)
Temperature (T
Switch ON
0
0.5A
30
1A
25
2A
50
50
A
AP1509 Supply Current vs. Temperature
) (°C)
70
90 110 130 150
75
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100
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125
150KHz, 2A PWM BUCK DC/DC CONVERTER
AP1509 Switch Current Limit vs. Temperature
AP1509 Efficiency vs. Temperature (Vin=12V,
5.5
4.5
3.5
60
55
50
45
40
35
30
81
80
79
78
77
76
75
74
73
5
4
3
-50 -30 -10 10
-50
-50 -30 -10 10
-30
(Vcc = 12V, Vfb = 0V)
Vout=3.3V, Io=2A)
Temperature (TA) (°C)
Temperature (TA) (°C)
Temperature (T
-10
Switch OFF
30
30
10
50
50
30
A
70
70
) (°C)
©
FEBRUARY 2008
90 110 130 150
90 110 130 150
50
AP1509
Diodes Incorporated
70
90