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ISL78302_14 Datasheet, PDF (5/13 Pages) Intersil Corporation – Dual LDO with Low Noise, High Performance and Low IQ | |||
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ISL78302
Electrical Specifications Unless otherwise noted, all parameters are guaranteed over the operational supply voltage and temperature
range of the device as follows: TA = -40°C to +105°C; VIN = (VO + 0.5V) to 6.5V with a minimum VIN of 2.3V; CIN = 1µF; CO = 1µF; CBYP = 0.01µF;
CPOR = 0.01µF. Boldface limits apply across the operating temperature range, -40°C to +105°C. (Continued)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 7) TYP (Note 7)
UNITS
Output Noise Voltage
IO = 100µA, VO = 1.5V, TA = +25°C, CBYP = 0.01µF
BW = 10Hz to 100kHz
37
µVRMS
DEVICE START-UP CHARACTERISTICS
Device Enable Time
tEN Time from assertion of the ENx pin to when the output
voltage reaches 95% of the VO(nom)
250
500
µs
LDO Soft-start Ramp Rate
tSSR Slope of linear portion of LDO output voltage ramp during
start-up, VOUT > 1.25V
Slope of linear portion of LDO output voltage ramp during
start-up, VOUT ⤠1.25V
EN1, EN2 PIN CHARACTERISTICS
30
60
40
80
µs/V
µs/V
Input Low Voltage
VIL
Input High Voltage
VIH
Input Leakage Current
IIL, IIH
Pin Capacitance
CPIN
POR1, POR2 PIN CHARACTERISTICS
Informative
-0.3
1.35
0.5
V
VIN + 0.3
V
0.1
µA
5
pF
POR1, POR2 Thresholds
POR1 Delay
POR2 Delay
POR1, POR2 Pin Output Low
Voltage
VPOR+
VPOR-
tP1LH
tP1HL
tP2LH
tP2HL
VOL
As a percentage of nominal output voltage
CPOR = 0.01µF
at IOL = 1.0mA
91
94
97
%
87
90
93
%
0.5
2.0
3.2
ms
25
µs
100
200
300
ms
25
µs
0.2
V
POR1, POR2 Pin Internal Pull-up
Resistance
RPOR
78
100
180
kΩ
NOTES:
6. VOx = 0.98*VOx(NOM); Valid for VOx greater than 1.85V.
7. Compliance to datasheet limits is assured by one or more methods: production test, characterization and/or design.
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5
FN7696.6
November 6, 2014
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