SC1458 SEMTECH [Semtech Corporation], SC1458 Datasheet - Page 4

• Manufacturer Part Number: SC1458
• Description: Dual Output Low Noise LDO Linear Regulator
• Manufacturer: SEMTECH [Semtech Corporation]

Notes:
(1) Dropout voltage is defi ned as V
(2) SC1458B only
(3) SC1458A only
Electrical Characteristics (continued)
Parameter
Power Supply Rejection Ratio
PGOOD Delay
PGOOD Threshold
Start-Up Time
Power Up Delay Between LDOA
and LDOB
Under Voltage Lockout
UVLO Hysteresis
Over Temperature Protection
Threshold
Over Temperature
Hysteresis
Digital Inputs
Logic Input High Threshold
Logic Input Low Threshold
Logic Input High Current
Logic Input Low Current
Digital Outputs
PGOOD Output Voltage Low
(3)
(3)
(2)
IN
- V
Symbol
V
V
OUT
t
TH(PGOOD)
T
PSRR
UVLO-HYS
t
V
PGOOD
OT-HYS
DELAY
T
V
t
V
V
UVLO
I
I
, when V
SU
OT
IH
IL
OL
IH
IL
OUT
is 100 mV below the value of V
Delay between 0.87V
From OFF to 87% V
V
V
IN
IN
= 3.7V, I
= 3.7V, I
I
SINK
Rising threshold
V
= 500μA, V
Conditions
OUT(LDOA)
C
C
OUT
OUT
V
V
V
V
V
BYP
BYP
IN
IN
IN
IN
IN
= 50mA, f = 1kHz,
= 50mA, f = 1kHz
= 5.5V
= 2.5V
= 5.5V
= 5.5V
Rising
= 22nF
= 22nF
OUTA
falling
OUT
IN
and V
, I
= 3.7V
OUT
OUT
= 50mA,
OUTB
for V
start-up
IN
= V
OUT
+0.5V.
Min
2.15
1.25
160
82
Typ
2.25
200
128
100
160
65
40
87
20
1
7
Max
2.35
240
0.4
92
20
1
1
SC1458
Units
mV
mV
ms
ms
μA
μA
dB
μs
°C
°C
%
V
V
V
4