SC900A Datasheet, PDF (5/23 Pages) Semtech Corporation – Programmable Penta ULDO with RESET and I2C Interface

SC900A
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Parameter
Symbol
Conditions
Min
LDO Regulator D (Cont.)
Maximum Output Current
IOMAX_D
150
Default Setting: OFF
VO_D
Line Regulation at 3.10V
LINEREG_D I_OUT = 1mA, V_OUT + 0.15V < V_IN < 5.5V
Load Regulation at 3.10V
LOADREG_D
1mA < I_OUT <150mA
Dropout Voltage
Power Supply Rejection Ratio
V_DD
PSRR_D
Output Voltage Noise⁽²⁾
e_n-D
V_OUT = 3.3V, I_OUT = 150mA
f = 10Hz - 1kHz, C_BYP = 0.1mF,
I_OUT = 50mA,
2.5V ≤ V_OUT ≤ 3.3V
f = 10Hz - 100kHz, I_OUT = 50mA,
C_VREF = 0.1μF, C_OUT = 2.2μF,
2.5V ≤ V_OUT ≤ 3.3V
LDO Regulator E
Output Voltage Accuracy
VOA_E
1.75V ≤ V_OUT ≤ 3.30V
V_OUT + 0.15V ≤ V_IN ≤ 5.5V
-3
I_OUT = 1mA, T_A = 25°C
Output Voltage Accuracy at
3.10V (DAC = 10111)
Maximum Output Current
Default Setting: OFF
Line Regulation at 3.10V
Load Regulation at 3.10V
VOAS_E
I_OUT = 1mA
-2
V_OUT + 0.5V ≤ V_IN ≤ 5.5V,
I_OUT = 150mA
-3.5
IOMAX_E
150
VO_E
LINEREG_E I_OUT = 1mA, V_OUT + 0.15V < V_IN < 5.5V
LOADREG_E
1mA < I_OUT = 150mA
Dropout Voltage
V_DE
V_OUT = 3.3V, I_OUT = 150mA
Power Supply Rejection Ratio PSRR_E
Output Voltage Noise⁽²⁾
e_n-E
A RESET
f = 10Hz - 1kHz, C_BYP = 0.1μF,
I_OUT = 50mA,
2.5V ≤ V_OUT ≤ 3.3V
f = 10Hz - 100kHz, I_OUT = 50mA,
C_VREF = 0.1μF, C_OUT = 2.2μF,
2.5V ≤ V_OUT ≤ 3.3V
Reset Threshold
RESET_THLD
Reset Active Timeout Delay
t_RD
Delay in default state
75
LDO POWER GOOD
PGOOD Threshold
PGOOD_THLD
PGOOD Active Timeout Delay
t_PG
Delay in default state
75
Notes:
1) Digital outputs are powered from LDOB, so LDOB must be active for operation of LDOPGD and ARST.
2) Below 2.5V: becomes digital regulator.
© 2005 Semtech Corp.
5
Typ
3.10
2.5
-3
150
60
55
3.10
2.5
-3
150
60
55
77
100
77
100
Max Units
mA
V
12
mV
-20
mV
190
mV
dB
μV_RMS
+3
%
+2
%
+3.5
%
mA
V
12
mV
-20
mV
190
mV
dB
μV_RMS
%
125
ms
%
125
ms
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