Rainbow Electronics ATA6626 - Manual (Page 9)

9
4970A–AUTO–01/07
ATA6621/22/24 Development Board
Figure 3-5 to Figure 3-10 on page 11 show some typical operating characteristics measured at
the ATA6621. The supply voltage V
S
is approximately a diode forward voltage lower than V
bat
(reverse battery protection). The external circuitry is shown in Figure 4-1 on page 12 .
Figure 3-5. Output Voltage PV
CC
versus Battery Voltage V
bat
at Startup
Figure 3-6. Output Voltage PV
CC
versus Battery Voltage V
bat
at Different Output Currents
0
1
2
3
4
5
6
0 2 4 6 8 10 12
V
bat
(V)
PV
CC
(V)
ATA6621 with External Boosttransistor MJD31C
I
OUT
= 0
I
OUT
= 20 mA
V
bat
(V)
PV
CC
(V)
ATA6621 with External Boosttransistor MJD31C
4.9 9 0
4.9 9 5
5.0 0 0
5.0 0 5
5.0 10
5.0 15
5.0 2 0
0 10 2 0 3 0 4 0 50
I
OUT
= 0
I
OUT
= 20 mA
I
OUT
= 100 mA