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8405 Datasheet, PDF (3/8 Pages) Allegro MicroSystems – LOW-DROPOUT REGULATORS . HIGH EFFICIENCY
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8405
LOW-DROPOUT
REGULATORS
ELECTRICAL CHARACTERISTICS at TA = +25°C, VE ≥ 2.0 V, CBYPASS = TBD (unless otherwise noted).
Limits
Characteristic
Symbol Test Conditions
Min. Typ. Max. Units
Output Voltage
VO
(reference specified VO(nom))
VI ≥ VO(nom) + 1 V, 1 mA ≤ IO ≤ 150 mA*
VI ≥ VO(nom) + 1 V, 1 mA ≤ IO ≤ 150 mA*,
over operating temperature range
— ±0.5 —
%
—
— ±2.0
%
VI = VO(nom), IO = 50 mA
—
— -0.25
V
Output Volt. Temp. Coeff.
aVO
VI = 6 V, IO = 10 mA, TJ ≤ 125°C
— TBD — mV/°C
Output Short-Circuit Current IOM
200 — —
mA
Line Regulation
∆VO(∆VI)
at VI = VO(nom) + 1 V, IO = 3 mA
and VI = 7 V, IO = 3 mA
— 1.0 2.0
mV
Load Regulation
∆VO(∆IO)
at VI = VO(nom) + 1 V, IO = 1 mA
and VI = VO(nom) + 1 V , IO = 150 mA*
— 2.0 —
mV
at VI = 7 V, IO = 1 mA
and VI = 7 V, IO = 150 mA*
— 2.0 —
mV
Dropout Voltage
VImin - VO IO = 100 mA
— 100 —
mV
Ground Terminal Current
IGND
VI = VO(nom) + 1 V, IO = 1 mA
—
80 100
µA
VI = VO(nom) + 1 V, IO = 150 mA*
—
80 100
µA
VI = 7 V, IO = 1 mA
—
80 100
µA
VI = 7 V, IO = 150 mA*
—
80 100
µA
IQ
VI ≤ 7 V, VE ≤ 0.8 V, IO = 0 mA
—
— 1.0
µA
ENABLE Input Voltage
VEH
VI ≥ VO(nom) + 1 V, Output ON
2.0 — —
V
VEL
VI ≥ VO(nom) + 1 V, Output OFF
—
— 0.4
V
ENABLE Input Current
IE
VE = VI = 7 V
—
— ±1.0
µA
Internal Reference Voltage
VREF
— 1.26 —
V
ADJUST Input Current
IADJ
A8405SLH-ADJ only
— 0.10 —
µA
Rejection Ratio
PSRR
VI = VO(nom) + 1.5 V, Vi = 100 mV,
IO = 30 mA, f = 60 Hz
—
70 —
dB
Output Noise
en
10 Hz ≤ f ≤ 100 kHz, IO = 10 mA, CO = 10 µF —
0.2 — µV/√Hz
Thermal Shutdown
TJ
— 170 —
°C
Typical values are at TA = +25°C and are given for circuit design information only.
* Pulse test (≤20 ms). See previous page for duty cycle limitations.
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