CAT6241 Datasheet, PDF (4/17 Pages) ON Semiconductor – 1 Amp Adjustable CMOS LDO Voltage Regulator

CAT6241
Table 5. ELECTRICAL CHARACTERISTICS (V_IN = (V_OUT + 1 V) or V_{IN_MIN}, whichever is higher, C_IN = 1 mF, C_OUT = 2.2 mF, for
typical values T_A = 25°C, for Bold values T_A = −40°C to 85°C; unless otherwise noted.)
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
INPUT / OUTPUT
V_R−LINE
Line Regulation
V_R−LOAD
V_DO
I_ADJ
I_GND
Load Regulation
V_OUT ≥ 0.8 V
V_OUT = 1.2 V
V_OUT = 2.5 V
V_OUT = 3.3 V
V_OUT = 1.2 V
V_OUT = 2.5 V
V_OUT = 3.3 V
ADJ Input Current
Ground Current
I_GND−SD
ISC
Shutdown Ground Current
Output short circuit current limit
PSRR AND NOISE
V_IN = V_OUT + 1.0 V to 5.5 V,
−0.3
±0.08
0.3
%/V
I_OUT = 10 mA
V_IN = V_OUT + 1.0 V to 5.5 V,
I_OUT = 10 mA
−0.45
0.45
I_OUT = 100 mA to 1000 mA
1.5
2
%
I_OUT = 100 mA to 1000 mA
3
I_OUT = 300 mA
T_A = 25°C
460
mV
110
85
I_OUT = 1 A
700
T_A = 25°C
350
275
100
nA
I_OUT = 0 mA
I_OUT = 0 mA
I_OUT = 1000 mA
I_OUT = 1000 mA
V_EN < 0.4 V
V_OUT = 0 V
70
mA
100
140
200
250
5
mA
900
mA
PSRR
Power Supply Rejection Ratio
f = 1 kHz, BYP = 470 pF,
I_OUT = 10 mA
f = 20 kHz, BYP = 470 pF,
I_OUT = 10 mA
e_N
Output Noise Voltage for 1.2 V output
BW = 10 Hz to 100 kHz
BYP = 470 pF, I_OUT = 10 mA
UVLO, R_OUT AND ESR
V_UVLO
Under voltage lockout threshold
R_OUT−SH ON resistance of Discharge Transistor
ESR
C_OUT equivalent series resistance
5
ENABLE INPUT
54
dB
42
45
mVrms
1.4
1.55
V
150
W
500
mW
V_HI
V_LO
I_EN
R_EN
TIMING
Logic High Level
Logic Low Level
Enable Input Current
Enable pull−down resistor
V_IN = 1.6 to 5.5 V
V_IN = 1.6 to 5.5 V
V_EN = 0.4 V
V_EN = V_IN = 2.5 V
1.6
V
0.4
V
0.15
1
mA
1
3
2.5
MW
T_ON
Turn−On Time
THERMAL PROTECTION
C_BYP = 0 pF
C_BYP = 470 pF
230
ms
1600
T_SD
Thermal Shutdown
145
°C
T_HYS
Thermal Hysteresis
10
°C
7. Performance guaranteed over the indicated operating temperature range by design and/or characterization tested at T_J = T_A = 25_C. Low
duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible.
8. Output current capability depends upon the value of both V_IN and V_OUT. For V_OUT ≤ 0.8 V, output current capability is 90% of ISC (see
Figure 13). For V_OUT > 0.8 V, current capability is 1 A for V_IN ≥ 1.8 V.
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