SC1452 Datasheet, PDF (3/7 Pages) Semtech Corporation – DUAL 150mA LDO REGULATOR WITH PROGRAMMABLE RESET

DUAL 150mA LDO REGULATOR WITH
PROGRAMMABLE RESET
SC1452
PRELIMINARY - August 7, 2000
ELECTRICAL CHARACTERISTICS (Cont.)
Unless specified: T_A = 25°C, V_IN = V_OUT + 1V, I_OUTA = I_OUTB = 1mA, C_OUT = 1.0 µF, V_ENA = V_ENB = V_IN. Values in bold apply over full operating
temperature range.
Parameter
Symbol
Condition
Min Typ Max Units
OUTA, OUTB (Cont.)
Ripple Rejection
Output Voltage Noise
BYP
Start-up Rise Time
ENABLE (ENA, ENB)
Enable Input Threshold
Enable Input Current
RSTA, RSTB
PSRR
e_n
t_r
V_IH
V_IL
I_EN
f = 120Hz, C_BYP = 10nF
f = 10Hz to 99kHz, I_OUT = 50mA,
C_BYP = 10nF, C_OUT = 2.2µF
C_BYP = 10nF
60
dB
50
µV_RMS
1.5
ms
1.6
V
0.4
0.2 µA
Reset Threshold
V_TH
Reset A Delay
Reset B Delay
Reset A, B Output Voltage⁽¹⁾
DLYB
t_RSTA
t_RSTB
V_OH
V_OL
Delay Voltage Threshold
V_DLYB
Delay Source Current
I_DLYB
OVER TEMPERATURE PROTECTION
High Trip Level
Hysteresis
T_HI
T_HYST
V_OUT falling
V_OUT rising
V_DLYB = 0V
I_SOURCE = 0.5mA
I_SINK = 1.2mA
V_OUTB < V_TH
88 90 92 %V_OUT
90 92 94
30 50 70 ms
90 150 210 ms
80
%V_OUT
0.3 V
1.225 1.250 1.275 V
2.1 3.0 3.9 µA
150
°C
20
°C
NOTE:
(1) V_OHA will be a percentage of V_OUTA, and V_OHB will be a percentage of V_OUTB.
© 2000 SEMTECH CORP.
3
652 MITCHELL ROAD NEWBURY PARK CA 91320