Diodes AP7173 - Manual (Page 2)

AP7173
1.5A LOW DROPOUT LINEAR REGULATOR WITH
PROGRAMMABLE SOFT-START
AP7173
Document number: DS31369 Rev. 9 - 2
2 of 15
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April 2011
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Typical Application Circuit
(Continued)
Table 1. Resistor Values for Programming the Output Voltage (Note 2)
R
1
(k Ω) R
2
(k Ω) V
OUT
(V)
Short Open 0.8
0.619 4.99 0.9
1.13 4.53 1
1.37 4.42 1.05
1.87 4.99 1.1
2.49 4.99 1.2
4.12 4.75 1.5
3.57 2.87 1.8
3.57 1.69 2.5
3.57 1.15 3.3
Note: 2 V OUT = 0.8 x (1 + R 1 / R 2 )
Table 2. Capacitor Values for Programming the Soft-Start Time (Note 3)
CSS SOFT-START TIME
Open 0.1ms
270pF 0.5ms
560pF 1ms
2.7nF 5ms
5.6nF 10ms
0.01
μF 18ms
Note: 3. t SS (s) = 0.8 x C SS (F) / (4.4 x 10
–7
)
Figure 2. Turn-On Response