S1172 Datasheet, PDF (9/35 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION LOW DROPOUT

Rev.2.2_01
HIGH RIPPLE-REJECTION LOW DROPOUT HIGH OUTPUT CURRENT CMOS VOLTAGE REGULATOR
S-1172 Series
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
I_SHORT
Thermal shutdown
detection temperature
T_SD
Table 7 (2 / 2)
Condition
V_IN = V_OUT(S) + 1.0 V,
R_L = 1.0 kΩ,
determined by V_OUT
output level
V_IN = 5.5 V,
R_L = 1.0 kΩ,
determined by V_OUT
output level
V_IN = V_OUT(S) + 1.0 V,
R_L = 1.0 kΩ,
determined by V_OUT
output level
V_IN = 5.5 V,
R_L = 1.0 kΩ,
determined by V_OUT
output level
1.0 V ≤ V_OUT(S) ≤ 4.5 V
4.5 V < V_OUT(S) ≤ 5.0 V
1.0 V ≤ V_OUT(S) ≤ 4.5 V
4.5 V < V_OUT(S) ≤ 5.0 V
V_IN = 5.5 V, V_ON/OFF = 5.5 V
V_IN = 5.5 V, V_ON/OFF = 0 V
V_IN = V_OUT(S) + 1.0 V,
f = 1 kHz,
ΔV_rip = 0.5 Vrms,
I_OUT = 100 mA
V_IN = 5.5 V,
f = 1 kHz,
ΔV_rip = 0.5 Vrms,
I_OUT = 100 mA
V_IN = V_OUT(S) + 1.0 V,
ON/OFF pin = ON,
V_OUT = 0 V
V_IN = 5.5 V,
ON/OFF pin = ON,
V_OUT = 0 V
1.0 V ≤ V_OUT(S) < 1.2 V
1.2 V ≤ V_OUT(S) ≤ 3.0 V
3.0 V < V_OUT(S) ≤ 4.5 V
4.5 V < V_OUT(S) ≤ 5.0 V
1.0 V ≤ V_OUT(S) ≤ 4.5 V
4.5 V < V_OUT(S) ≤ 5.0 V
Junction temperature
(Ta = +25°C unless otherwise specified)
Min.
Typ. Max.
Unit
Test
Circuit
1.0
−
−
V
4
1.0
−
−
V
4
−
−
0.3
V
4
−
−
0.3
V
4
−0.1
−
0.1
μA
4
−0.1
−
0.1
μA
4
−
70
−
dB
5
−
65
−
dB
5
−
60
−
dB
5
−
60
−
dB
5
−
200
−
mA
3
−
200
−
mA
3
−
150
−
°C
−
Thermal shutdown
release temperature
T_SR
Junction temperature
−
120
−
°C
−
*1. V_OUT(S) : Set output voltage
V_OUT(E) : Actual output voltage
Output voltage when fixing I_OUT (= 100 mA) and inputting V_OUT(S) + 1.0 V or 5.5 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_OUT3 is the output voltage when V_IN = V_OUT(S) + 1.0 V or 5.5 V, and I_OUT = 300 mA or 1000 mA.
V_IN1 is the input voltage at which the output voltage becomes 98% of V_OUT3 after gradually decreasing the input
voltage.
*4. A change in the temperature of the output voltage [mV/°C] is calculated using the following equation.
ΔV_OUT
ΔTa
[mV/°C]^*1 = VOUT(S) [V]^*2 ×
ΔV_OUT
ΔTa•V_OUT
[ppm/°C]^*3 ÷ 1000
*1. Change in temperature of output voltage
*2. Set output voltage
*3. Output voltage temperature coefficient
*5. The output current can be at least this value.
Due to restrictions on the package power dissipation, this value may not be satisfied. Attention should be paid to
the power dissipation of the package when the output current is large.
This specification is guaranteed by design.
Seiko Instruments Inc.
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