Owner's manual

AP6508
500kHz 21V 3A SYNCHRONOUS DC/DC BUCK CONVERTER
AP6508
Document number: DS33437 Rev. 5 - 2
5 of 14
www.diodes.com
October 2011
© Diodes Incorporated
NEW PRODUCT
Typical Performance Characteristics
1
1.05
1.1
1.15
1.2
1.25
1.3
0
5
10 15 20 25
INPUT VOLTAGE
Quiescent Supply Current vs. Input Voltage
QUIESCENT SUPPLY CURRENT (mA)
0 5 10 15 25
INPUT VOLTAGE (V)
Shutdown Supply Current vs. Input Voltage
SHUTD
O
WN SUPPL
Y
C
U
R
R
ENT (µA)
0
2
4
6
8
10
12
14
16
18
20
20
5.02
5.025
5.03
5.035
5.04
5.045
5.05
0 5 10 15 20 25
INPUT VOLTAGE (V)
V Regulator Line Regulation
C
C
V (V)
CC
-10-20 0 2010 30 5040 60 8070 90
TEMPERATURE (°C)
Current Limit vs. Temperature
7
6.6
6
5
6.8
6.2
6.4
5.6
5.8
5.2
5.4
C
U
R
R
E
N
T
LI
M
I
T
(A)
V = 12V
V = 1.2V
IN
OUT
-40
1.22
1.2205
1.221
1.2215
1.222
1.2225
1.223
1.2235
1.224
1.2245
1.225
0 5 10 15 20 25
INPUT VOLTAGE (V)
Line Regulation vs. Output Current
O
U
T
P
U
T V
O
LT
A
G
E
(V)
11.500.5 2.532
OUTPUT CURRENT (A)
Load Regulation vs. Output Current
V = 5V
IN
V = 12V
IN
1.208
1.21
1.204
1.206
1.2
1.202
1.196
1.198
1.192
1.194
O
U
T
P
U
T
VOL
T
A
G
E
(V)