S-19244A12H-E8T1U Datasheet, PDF (43/68 Pages) Seiko Instruments Inc – CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION

FOR AUTOMOTIVE 105°C OPERATION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR WITH SOFT-START FUNCTION
Rev.3.0_00
S-19244xxxH Series
7. Output capacitance vs. Characteristics of discharge time (Ta = +25°C)
V_IN = 2.5 V, V_{ON / OFF} = 2.5 V → V_SS (V_OUT(S) < 1.5 V),
V_IN = V_OUT + 1.0 V, V_{ON / OFF} = V_OUT + 1.0 V → V_SS (1.5 V ≤ V_OUT(S)),
I_OUT = 1 mA, t_f = 1 μs
30
V_{ON / OFF}
1 μs
25
VOUT(S) = 1.0 V
20
15
10
VOUT(S) = 3.0 V
V_OUT
t_DSC
V_SS
5
VOUT(S) = 6.0 V
0
0 20 40 60 80 100 120
CL [F]
V_OUT × 10%
V_IN = 2.5 V, V_{ON / OFF} = 2.5 V → V_SS (V_OUT(S) < 1.5 V),
V_IN = V_OUT + 1.0 V, V_{ON / OFF} = V_OUT + 1.0 V → V_SS (1.5 V ≤ V_OUT(S))
Figure 34 S-19244xxxH Series A / B type
(with discharge shunt function)
Figure 35 Measurement Condition of Discharge Time
8. Example of equivalent series resistance vs. Output current characteristics (Ta = +25°C)
C_IN = C_L = 2.2 μF
100
Stable
0 _1.0
I_OUT [mA]
1000
Figure 36
C_IN
ON / OFF
VIN
S-19244xxxH
Series
VSS
VOUT
SSC
C_SS
C_L^*1
R_ESR
*1. C_L: TDK Corporation CGA6M2X8R1E225K (2.2 μF)
Figure 37
43