R1113Z_05 Datasheet, PDF (6/18 Pages) RICOH electronics devices division – LOW NOISE 150mA LDO REGULATOR

R1113Z
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Output Voltage VOUT (V)
1.5
1.6
1.7
1.8
1.9
2.0 ^<= VOUT ^<= 2.3
2.4 ^<= VOUT ^<= 2.7
2.8 ^<= VOUT ^<= 5.0
Dropout Voltage
Topt = 25°C
VDIF (V)
Condition
Typ. Max.
0.50 0.70
0.45 0.65
0.40 0.60
IOUT = 100mA
0.34 0.55
0.28 0.44
0.25 0.35
0.24 0.29
0.23 0.26
Output Voltage VOUT (V)
1.5 ^<= VOUT ^<= 4.0
4.1 ^<= VOUT ^<= 5.0
Ripple Rejection
Topt = 25°C
RR (dB)
Condition
Typ. Max.
f = 1kHz, Ripple 0.5Vp-p
80
VIN = Set VOUT + 1V
70
OPERATION
R1113Zxx1A
VDD 3
CE 4
-
+
Vref
Current Limit
2 VOUT
VDD 3
R1
R2
1 GND
CE 4
R1113Zxx1B
-
+
Vref
Current Limit
2 VOUT
R1
R2
1 GND
In these ICs, fluctuation of output voltage, VOUT is detected by feedback registers R1, R2, and the result is
compared with a reference voltage by the error amplifier, so that a constant voltage is output. A current limit
circuit for protection in short mode and a chip enable circuit, are included.
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