S-19244A12H-E8T1U Datasheet, PDF (16/68 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
S-19244xxxH Series
Rev.3.0_00
Table 23 (2 / 2)
Item
Symbol
ON / OFF pin
input voltage "H"
V_SH
ON / OFF pin
input voltage "L"
V_SL
ON / OFF pin
input current "H"
I_SH
ON / OFF pin
input current "L"
I_SL
Ripple rejection
|RR|
Short-circuit current Ishort
Thermal shutdown
detection temperature
T_SD
Thermal shutdown
release temperature
T_SR
Discharge shunt
resistance during
power-off
R_LOW
ON / OFF pin
pull-down resistance
R_PD
Soft-start time^*6
t_SS
Condition
V_IN = 2.5 V, R_L = 1 kΩ,
determined by V_OUT output
level
V_IN = V_OUT(S) + 1.0 V,
R_L = 1 kΩ, determined by
V_OUT output level
V_IN = 2.5 V, R_L = 1 kΩ,
determined by V_OUT output
level
V_IN = V_OUT(S) + 1.0 V,
R_L = 1 kΩ, determined by
V_OUT output level
V_IN = 10 V, V_{ON / OFF} = 10 V
(T_j = −40°C to +150°C unless otherwise specified)
Min.
Typ.
Max.
Unit
Test
Circuit
V_OUT(S) < 1.5 V
2.1
−
−
V
4
1.5 V ≤ V_OUT(S)
2.1
−
−
V
4
V_OUT(S) < 1.5 V
−
−
0.6 V
4
1.5 V ≤ V_OUT(S)
−
−
B / D / F / H type −0.1 −
A / C / E / G type 0.8 2.5
0.6 V
4
0.1 μA 4
7.8 μA 4
V_IN = 10 V, V_{ON / OFF} = 0 V
−0.1 −
0.1 μA 4
V_IN = 3.0 V, f = 1 kHz,
ΔV_rip = 0.5 Vrms,
1.0 V ≤ V_OUT(S) < 1.5 V
−
60
− dB 5
I_OUT = 100 mA
1.5 V ≤ V_OUT(S) < 2.0 V
−
55
− dB 5
V_IN = V_OUT(S) + 1.0 V,
f = 1 kHz,
2.0 V ≤ V_OUT(S) < 2.6 V
−
55
− dB 5
ΔV_rip = 0.5 Vrms,
I_OUT = 100 mA
2.6 V ≤ V_OUT(S) ≤ 6.0 V
−
50
− dB 5
V_IN = 2.5 V,
ON / OFF pin = ON,
V_OUT = 0 V, Ta = +25°C
V_OUT(S) < 1.5 V
−
330
− mA 3
V_IN = V_OUT(S) + 1.0 V,
ON / OFF pin = ON,
1.5 V ≤ V_OUT(S)
−
330
− mA 3
V_OUT = 0 V, Ta = +25°C
Junction temperature
−
170
−
°C −
Junction temperature
−
135
−
°C −
V_IN = 10 V, V_OUT = 0.1 V
A / B / E / F type −
100
−
Ω
6
−
V_IN = 2.5 V,
ON / OFF pin = ON
V_IN = V_OUT(S) + 1.0 V,
ON / OFF pin = ON
A / C / E / G type 1.3 4.0 12 MΩ 4
V_OUT(S) < 1.5 V,
A / B / C / D type
−
1.0
− ms 7
1.5 V ≤ V_OUT(S),
A / B / C / D type
−
1.0
− ms 7
*1. V_OUT(S): Set output voltage
V_OUT(E): Actual output voltage
Output voltage when fixing I_OUT (= 100 mA) and inputting 2.5 V or V_OUT(S) + 1.0 V.
*2. The output current at which the output voltage becomes 95% of V_OUT(E) after gradually increasing the output current.
*3. V_drop = V_IN1 − (V_OUT3 × 0.98)
V_IN1 is the input voltage at which the output voltage becomes 98% of V_OUT3 after gradually decreasing the input voltage.
V_OUT3 is the output voltage when V_IN = V_OUT(S) + 1.0 V, and I_OUT = 300 mA or 1000 mA.
*4. The dropout voltage is limited by the difference between the input voltage (min. value) and the set output voltage.
In case of 1.0 V ≤ V_OUT(S) < 1.5 V: 2.5 V − V_OUT(S) = V_drop
In case of 1.5 V ≤ V_OUT(S) < 2.0 V: (V_OUT(S) + 1.0 V) − V_OUT(S) = 1.0 V
*5. Due to limitation of the power dissipation, this value may not be satisfied. Attention should be paid to the power
dissipation when the output current is large.
This specification is guaranteed by design.
*6. Soft-start time shows the time period from immediately after power-on or when the ON / OFF pin is set to ON until the
output voltage rises to 99%. Refer to "8. Soft-start function" in " Operation" for details.
16