R1111N_17 Datasheet, PDF (6/18 Pages) RICOH electronics devices division – LOW NOISE 150mA LDO REGULATOR

R1111N
ELECTRICAL CHARACTERISTICS by OUTPUT VOLTAGE
Output Voltage
V_OUT (V)
1.5 ≤ V_SET ≤ 1.7
1.8 ≤ V_SET ≤ 5.0
Output Current
I_OUT (mA)
Condition
V_IN=V_SET+1V
Topt = 25°C
Min.
100
150
Output Voltage
V_OUT (V)
1.5
1.6
1.7
1.8 ≤ V_SET ≤ 1.9
2.0 ≤ V_SET ≤ 2.4
2.5 ≤ V_SET ≤ 2.7
2.8 ≤ V_SET ≤ 3.3
3.4 ≤ V_SET ≤ 5.0
Condition
Dropout Voltage
V_DIF (V)
Min.
0.5
0.4
0.3
I_OUT = 100mA
Topt = 25°C
Typ.
Max.
0.60
1.40
0.35
0.70
0.24
0.35
0.20
0.30
0.17
0.26
OPERATION
R1111Nxx1A
R1111Nxx1B
1
VDD
5
VOUT
1
VDD
5
VOUT
R1
R1
Vref
Vref
CE
Current Limit
R2 _GND
CE
Current Limit
R2 _GND
3
2
3
2
In these ICs, fluctuation of output voltage, VOUT is detected by feed-back 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 at short mode and a chip enable circuit, are included.
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