8188 Datasheet, PDF (4/12 Pages) Allegro MicroSystems – LOW-DROPOUT REGULATORS . HIGH EFFICIENCY

8188
LOW-DROPOUT
REGULATORS
ELECTRICAL CHARACTERISTICS at T_A = +25°C (unless otherwise noted).
Limits
Characteristic
Symbol Test Conditions
Min. Typ. Max.
Output Voltage
V_O
(reference specified V_O(nom))
4 V ≤ V_I ≤ 8 V, 10 µA ≤ I_O ≤ 100 mA*
V_I = V_O(nom), I_O = 60 mA
Output Volt. Temp. Coeff.
a_VO
V_I = 6 V, I_O = 10 mA, T_J ≤ 125°C
Line Regulation
∆V_O(∆VI) 4 V ≤ V_I ≤ 8 V, I_O = 1 mA
Load Regulation
∆V_O(∆IO) 1 mA ≤ I_O ≤ 100 mA*, V_I = 8 V
1 mA ≤ I_O ≤ 100 mA*, V_I = 6 V
1 mA ≤ I_O ≤ 100 mA*, V_I = 4 V
Dropout Voltage
V_Imin – V_O I_O = 60 mA
I_O = 125 mA*
Quiescent Current
(GND terminal current)
I_Q
V_I = 8 V, I_O ≤ 1 mA, V_E ≥ 2.0 V
V_I = 8 V, I_O ≤ 100 mA*, V_E ≥ 2.0 V
V_I = V_O(nom), I_O = 60 mA
I_Q(off)
4 V ≤ V_I ≤ 8 V, V_E ≤ 0.8 V
ENABLE Input Voltage
V_EH
4 V ≤ V_I ≤ 8 V, Output ON
V_EL
4 V ≤ V_I ≤ 8 V, Output OFF
ENABLE Input Current
I_E
V_E = V_I = 8 V
Thermal Shutdown Temp.
T_J
Rejection Ratio
PSRR
V_I = V_O(nom) + 1.5 V, V_i = 100 mV, I_O = 10 mA:
f = 1 kHz
-0.05
-0.30
—
—
—
—
—
—
—
—
—
—
—
2.0
—
—
150
0.00
—
-0.30
—
—
—
—
90
190
55
70
200
—
—
—
—
—
+0.05
—
—
10
40
40
40
150
300
70
85
—
1.0
—
0.8
±1.0
—
—
60
—
f = 10 kHz
–
50
—
Noise
e_n
10 Hz ≤ f ≤ 100 kHz, I_O = 10 mA, C_O = 10 µF
—
2.0
—
Typical values are at T_A = +25°C and are given for circuit design information only.
* Pulse test (≤20 ms). See previous page for duty cycle limitations.
Units
V
V
mV/°C
mV
mV
mV
mV
mV
mV
µA
µA
µA
µA
V
V
µA
°C
dB
dB
µV/√Hz
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