S1335 Datasheet, PDF (47/67 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION SOFT-START FUNCTION

HIGH RIPPLE-REJECTION SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Rev.1.3_00
S-1335 Series
5. Output capacitance vs. Characteristics of discharge time (Ta = +25°C)
V_IN = V_OUT + 1.0 V, I_OUT = no load,
V_{ON / OFF} = V_OUT + 1.0 V → V_SS, t_f = 1.0 μs
1.6
1.4
VOUT(S) = 1.0 V
1.2
VOUT(S) = 2.5 V
1.0 VOUT(S) = 3.6 V
0.8
0.6
0.4
0.2
0
0 2 4 6 8 10 12
CL [μF]
Figure 37 S-1335 Series A / B / E / F / J / K Type
(With Discharge Shunt Function)
VON / OFF
1.0 μs
V_OUT
tDSC
V_SS
V_OUT × 10%
V_IN = V_OUT + 1.0 V
VON / OFF = VOUT + 1.0 V → VSS
Figure 38 Test Condition of Discharge Time
6. Example of equivalent series resistance vs. Output current characteristics (Ta = +25°C)
C_IN = C_L = 1.0 μF
100
Stable
0 _0.1
150
I_OUT [mA]
Figure 39
VIN
VOUT
C_IN
S-1335 Series
ON / OFF
VSS
SST^*2
C_L^*1
R_ESR
*1. C_L: TDK Corporation C1608X7R1C105K (1.0 μF)
*2. S-1335 Series J / K / L / M type only.
Figure 40
Seiko Instruments Inc.
47