S-1137 Datasheet, PDF (13/47 Pages) Seiko Instruments Inc – HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR

HIGH RIPPLE-REJECTION LOW DROPOUT SOFT-START FUNCTION CMOS VOLTAGE REGULATOR
Rev.2.1_01
S-1137 Series
Table 10 (2 / 2)
S-1137 Series A / B type (With discharge shunt function)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Test
Circuit
“L” output Nch
ON resistance
RLOW
VOUT = 0.1 V, VIN = 5.5 V
⎯
35
⎯
Ω
3
S-1137 Series A / C type (With pull-down resistor)
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Test
Circuit
Power-off
pull-down resistor
RPD
⎯
1.0
2.2
5.0 MΩ 4
*1. VOUT(S): Set output voltage
VOUT(E): Actual output voltage
Output voltage when fixing IOUT (= 100 mA) and inputting VOUT(S) +1.0 V
*2. The output current at which the output voltage becomes 95% of VOUT(E) after gradually increasing the output current.
*3. Vdrop = VIN1 − (VOUT3 × 0.98)
VOUT3 is the output voltage when VIN = VOUT(S) + 1.0 V and IOUT = 300 mA.
VIN1 is the input voltage at which the output voltage becomes 98% of VOUT3 after gradually decreasing the input
voltage.
*4. A change in temperature of the output voltage [mV/°C] is calculated using the following equation.
ΔVOUT
ΔTa
[mV/°C]^*1 = VOUT(S) [V]^*2 ×
ΔVOUT
ΔTa • VOUT
[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.
13